React Jobs - June 2025

Jupiter is rewiring healthcare supply and demand, enabling patients to save their healthcare dollars rather than paying them to an insurer, and easily find high-value, high-quality direct pay care.

We have built the largest database of direct pay pricing data in the US, are using AI to make it easily searchable, and are launching innovative insurance plans in the coming weeks.

We are hiring for multiple engineering roles:

- Engineering Lead / Head of Engineering to lead overall technical build-out of product

- Front-End Engineer (must be highly competent with React)

- Back-End Engineer (built mostly in Postgres today)

- AI Engineer to update/improve chatbot (current chatbot is built on GPT-4o)

We value intelligence, competence, teamwork, and energy for the mission. Our team are highly accomplished across disciplines, and have worked in industry and in leadership roles at multiple successful start-ups previously.

If you are interested in any of these roles, we'd love to hear from you! Please reach out at hello@jupiterplans.com

Roles: Computer Vision Engineer

Roles: Mid - Sen Frontend Engineer (React Native)

We are building software to help landscapers design, sell and maintain beautiful spaces. Millions of acres a year are converted into urban dwelling spaces, and we want to help make them as beautiful and as ecologically friendly as possible.

Duranta was founded a year ago. We are well funded and are expanding our team after having spent the last 9 months building an MVP and validating the market. We are looking for a frontend engineer and a computer vision engineer to complement our team. As the second CV/ML engineer you will have the opportunity to work closely with the founders & our CV/ML advisor, shape the CV/ML architecture and make a significant impact on the company’s product and trajectory. As a frontend engineer you and your 3 FE peers, will build critical user features in React Native and work closely with our designer and the founders.

Frontend: React, React Native, Typescript

Backend: Go, PostgreSQL running on AWS

CV/ML: Python, PyTorch, Marsk2Former running on AWS

If you're interested in working with us, please apply online. Mention you're from HN and let us know why Duranta is of interest and what you've been working on lately.

Please apply on: https://jobs.lever.co/getduranta

We are building the world’s most advanced Geospatial AI platform to help public organizations (local, national, intergovernmental) make decisions with real-time location data using AI Agents. Some of the world’s largest organizations are already on our waitlist, and you'll be iterating on their feedback

- This will be the most challenging (but rewarding) build of your life. You’ll be joining a team that delivers at the highest level

- Agentic AI, MCP/A2A/ACP, ACE, Prompt caching, TPM limits, Parallel processing, Memory management, Autoscaling

- Python, SQL, LangChain, AWS, Kubernetes, DuckDB, Next.js, React, WASM, DeckGL

- You think like an architect, execute like a builder and code like AI

- You ship fast, high standards, low ego

- You’re not here for the early startup paycheck, you know the pay is low at the start, instead, you’re in for the long game and care about building the most meaningful product of your career

- We are looking for killers, this will be fun and you’ll be fairly rewarded

(!) If at any point this sounds too intense or competitive, this is not for you

Process: - 10m call --> 30m system design test --> 10m team feeling call - $500 trial week, then $2000/month as a contractor for 3 months. Money scales fast based on how much you help us convert our 80+ solid leads into paying customers by shipping features fast. - After 3 months, you will transition to a Founding Engineer / CTO / Senior Dev role with equity depending on your goals.

--> contact@ageospatial.com (subject: “FOUNDING ENGINEER - FIRSTNAME LASTNAME) with CV/LinkedIn & GitHub/portfolio/something you’ve built before that ideally generated revenue --> And common guys don't use AI to write me an long email, just be straightforward

We make sure public money is well invested by building software for governments. We're doing to government software services what challenger banks did to banking.

Our clients are mainly governmental research institutions - we're building tools for scientists to process & visualise data, HPC data processing libraries, web apps to make people's working lives easier, and DevOps pipelines.

Currently hiring a senior react + typescript dev (EU only) and a senior python dev.

At Findigs, we’re transforming the rental experience — making it fairer, stress-free, and more convenient by changing the fundamentals of renting. We build high-scale applications that streamline renting for millions. Our modern tech stack includes TypeScript, Python, Node.js, React, and scalable cloud infrastructure. We foster a collaborative culture where engineers have high ownership and autonomy, taking features from concept to deployment. Join our sharp, supportive, and mission-driven team in our newly renovated SoHo/NoHo office.

Open roles

Senior Software Engineer ($180k - $210k) —> Apply here (https://jobs.lever.co/findigs/3b39616d-223f-4326-a500-f804c3...)

Software Engineer ($145k-$165k) —> Apply here (https://jobs.lever.co/findigs/b6c89cea-73e5-497f-b6e9-979465...)

We are Lightdash, an open source BI and analytics dashboard. We have recently closed our series A and are actively hiring for senior full-stack engineers with experience in Typescript+React+Node+SQL. Bonus points for experience in data-related companies/projects, or being a founding engineer at a startup.

We are a remote-first company, with our team members currently distributed all over Europe.

We are hiring for two roles: product engineer and customer engineer. The requirements are basically the same, but the latter requires a bit more customer interaction. You can find all the details and apply here: https://jobs.ashbyhq.com/lightdash

Important considerations:

- cover letter is very important, and please do not use chatgpt to write it (we have automated checkers in place)

- please mention on the referral field that you come from HN!

- this is a fulltime, permanent position, so we’re not considering contractors/consultants.

- we are also not considering people outside of european timezones.

Doctors are overworked, burnt out, and are quitting in masses.

I'm head of engineering at Freed, where we combine clinician love with the latest AI tech and intense execution to create products that make clinicians happier.

Our first product is an AI scribe that automates medical documentation.

- Acquired 20,000 paying and loving clinicians

- Generate 70,000 patient notes daily using ASR and LLMs, and have saved clinicians 2.7 million hours

- Created a consumer-grade UX, with greater enthusiasm than any product I've seen (https://love.getfreed.ai/b2xGQ1)

- Raised $30M led by Sequoia Capital, and are rapidly expanding our product offering.

Our engineering culture emphasizes speed, end-to-end ownership, responsibility, and independence. Our tech stack is React and TypeScript / Node.js.

Apply here: https://www.getfreed.ai/careers?utm_source=AOxjbOpE3X

Prove AI is an AI management platform that helps organizations centralize and manage their AI models while maintaining strict oversight of data access and usage. Built on distributed ledger technology, Prove AI provides tamper-proof oversight, ensuring organizations can set and enforce guardrails to mitigate risk and optimize AI performance.

We recently received 27.7 million USD investment and are currently growing our engineering team

Tech Stack: Type/Java, React, Node.js, Python Roles: https://proveai.careers.hibob.com/jobs/86854376-7235-4c8b-a0... Contact: Richard - TA Manager - Richard@proveai.com

ID.me simplifies how people securely prove and share their identity online. The company empowers people to control their data through a portable and trusted login, which means they don’t need to create a new password when visiting sites that have the ID.me button.

We're hiring for Principal SDEs. We're looking for dedicated, experienced engineers passionate about scalable system architecture, able to lead initiatives in areas like monitoring, automated testing, experimentation, and infrastructure as code. Ideal candidates will champion innovative solutions and exhibit leadership in these critical domains.

Our Stack: Ruby on Rails, Golang, Java, Sidekiq, PostgreSQL, Redis, React, Terraform.

Check out all our roles at: https://job-boards.greenhouse.io/idme?departments%5B%5D=4023... and if one perks your interest send me a note :)

I'm the hiring manager for the Authentication team, if you have any questions you can reach me directly at sergey.cherman+hn AT id.me Absolutely no staffing or recruiting firms, individuals only.

CVector builds software to make energy systems smarter, more reliable, and autonomous. We integrate real-time data visualization and analytics to help power generation stations, chemical plants, and other critical infrastructure make informed decisions in rapidly changing environments.

We're looking for a passionate Full Stack Software Engineer comfortable working across our stack (Python, Typescript, React, Supabase, MQTT, Kafka, TimescaleDB, PostgreSQL, AWS). You'll help create intuitive, robust web apps and backend systems, shaping tools that directly impact industrial operations and energy reliability.

Remote-first team with occasional domestic travel to connect with users directly. Recent graduates may need to relocate.

Tech: Python, Typescript, React, Supabase, MQTT, Kafka, TimescaleDB, PostgreSQL, AWS, GitHub

Reach out to me at jnapoli+hn@cvector.energy or apply at https://apply.workable.com/j/7A0CC50411?utm_source=HN&utm_me...

Looking for exceptional candidates with experience building and growing products from scratch that can take ownership of this early days product and take it to the next level.

What is Matcha

Realtime AI search through 1M+ top jobs from all sources Cut through the noise & only see the top 30 jobs to be the 1st to apply to everyday AI Ranks for fit based on your experience and preferences Generates natural AI cover letters on the fly

Skills

React.js Next.js Supabase Javascript Python Firecrawl Scraping and managing large amounts of data Good eye for design

Benefits: Considerable equity Unlimited vacation (At least 4 weeks per year)

Must be located in EU/Canada/US

https://matcha.fm

Tonbo IO | Product Engineer | Remote | https://tonbo.io/careers/database-engineer

We are a startup founded in the fall of 2023, working on offering "headless" real-time data analytics under Postgres. We have released several open-source projects that you can check out at https://github.com/tonbo-io.

Back-End Core Stack: Rust, Apache Arrow/Parquet, Open Telemetry

Front-End Core Stack: Python/JavaScript, NodeJs/Deno, Next.js/React, Drizzle, D3.js, WebAssembly

Music for health and wellbeing - we're working with leading scientists at MIT, NYU and UPenn alongside a roster of composers & producers to create validated music to improve health and wellbeing.

We are on course to enhance the effectiveness & efficacy of our music through the use of ML (let's have a call to talk more). We're starting with hospitality as a launchpad before moving into wider health sectors.

Core Stack: TypeScript, Rust, React, PostgreSQL, WebSockets, GCP

Hiring Founding Software Engineers in London, UK, - contact me via email: will [at] myndstream.com

sherl0ck is a small startup building AI applications for businesses with a focus on finance and pharma sectors. We're bootstrapped and profitable.

We’re looking for a junior developer (0-2 YoE) to join us full-time in Hyderabad (hybrid setup). You’ll be working closely with a small team and get hands-on experience across the stack. Our ideal candidate is a generalist proficient with Typescript and React.

We care more about your curiosity and problem-solving skills than years of experience. Having side projects you've built / maintained is a huge plus.

Feel free to reach out to me at z [at] sherl0ck.com.

New Lantern is hiring software engineers to help build an AI copilot [1] for radiologists.

Radiologists are experts at diagnosing disease in medical images, but they spend over half their working hours on tasks that have nothing to do with diagnosis: reading prior reports, transcribing handwritten notes, taking manual measurements, dictating reports, and chasing down follow-ups. New Lantern is building an AI copilot for radiologists to automate this non-diagnostic work, so radiologists can focus on what they do best: caring for patients and interpreting images.

We are starting to find product-market fit and recently raised a $19M Series A from Benchmark [2]. Demand for our product is growing, and we're hiring software engineers in San Francisco to help us scale our product and our team. We work together in person five days a week from our office in Jackson Square.

Engineering is at the heart of New Lantern. Our engineers work directly with our founder/CEO, our staff radiologist, and our end users to build features that radiologists rely on daily. Everyone has real ownership and autonomy, moves quickly, and ships meaningful work frequently. We're a small, sharp team of frontend, full-stack, and backend engineers building a React-based web app backed by Python services, cloud infrastructure, and LLMs.

I'm Steve, New Lantern's Head of Engineering. If you're interested or want to learn more, shoot me a note at (my HN username)@newlantern.ai.

[1] We translate "AI copilot" to "AI radiology resident" when we speak with medical professionals, but the former is the clearest way to communicate what we're building here.

[2] https://newlantern.ai/blog/new-lantern-19m-series-a-led-by-b...

Love building a product that improves a user’s life so much that they can’t help but share it with their peers?

Boost My School is on a mission to help schools fund brighter student futures. Our platform is trusted by 200+ K-12 schools to modernize their fundraising, events, and auctions.

Why work at Boost?

1. We make meaningful impact helping schools and students

2. We win as part of a thoughtful and collaborative team

3. We embrace ownership over our work, growth, and time

For full job details and instructions on how to apply: https://boostmyschool.com/careers#senior-software-engineer

Leadership team you'll be working with:

- CEO, coded first version of product (https://www.linkedin.com/in/holman-gao)

- Head of Product, ex Apple, Flexport, Stanford CS (https://www.linkedin.com/in/nathaniel-okun)

Tags: edtech, fintech, social impact, mission-driven

Stack: Ruby, Rails, React, GraphQL, Typescript

Spara builds enterprise-grade AI agents that engage, qualify, and convert sales leads into revenue. We're solving a complex, high-impact sales problem ($28B market) through sophisticated multi-modal interactions, leveraging leading-edge foundation models across multiple providers (OpenAI, Anthropic, Meta, Google...)

We're an experienced, tight-knit team backed by Radical Ventures & Inspired Capital, with support from AI luminaries including founders of PyTorch and Google Cloud TPU. Our tech stack includes FastAPI/Python, React/TypeScript/Tailwind, Postgres/pgvector, Google Cloud, Docker, and GitHub Actions.

Staff / Senior AI Engineer: Architect and build our AI engine, fine-tune models, design evaluations, and optimize user interactions.

https://www.spara.co/careers?ashby_jid=62ad31de-e815-4a02-93... https://www.spara.co/careers?ashby_jid=523871d0-32bc-4ef4-8d...

Staff / Senior Full Stack Engineer: Develop and scale our core product suite, interfaces, and sales workflow orchestration systems.

https://www.spara.co/careers?ashby_jid=1885ae6f-0815-4001-84... https://www.spara.co/careers?ashby_jid=151c6ee3-4e3a-4d17-98...

Competitive comp, strong benefits, sustainable culture, impactful work. We're growing quickly – come build the future of sales with us!

Experience: Other than interns, we currently require a Bachelors degree in physics, engineering, math, computer science, or a related field, plus preferably 3+ years of work experience or a Masters or PhD in lieu of work experience. (Roughly 30% of our staff have PhDs.)

Technologies: Mostly C++23, Qt 6.5-6.9, CMake, git, OpenGL, CUDA, Boost, Jenkins. Windows and Linux, msvc/gcc/clang/clangcl. AI/ML and other projects use Python, some use Java or Javascript/Typescript/React.

Apply online at https://www.stellarscience.com/careers/.

BillionToOne is ranked at the top 5% of Y Combinator companies with close to $400M in funding. In June 2024, we closed a $130M Series D resulting in a company valuation of over $1 billion. This funding has come from prestigious global institutional investors, including Hummingbird, Adams Street Partners, Neuberger Berman, Baillie Gifford, and Premji Invest.

We have developed a DNA molecular counter that increases cfDNA diagnostic resolution by over 1,000x. Our first product, Unity, is the first and only non-invasive prenatal test that can directly screen an unborn baby and assess its risk for: common and severe recessive gene disorders; chromosomal abnormalities; fetal sex; and fetal antigens from a single tube of blood from the pregnant mother. This greatly improves the quality of care and is on its path to becoming the next standard-of-care.

Our software stack includes Python/Django, React/Typescript, Terraform, AWS, and many other standard tools. We're a small, but nimble software team that prioritizes rapid iteration and continuous feedback to evolve our product. As a biotech company, we inherently need to always work cross functionally. If you enjoy this style of work, please reach out!

We're hiring software engineers, bioinformatics engineers, and many other roles. You can email me directly at kwu@billiontoone.com with your resume or apply through the links below.

- Senior Software Engineer: https://job-boards.greenhouse.io/billiontoone/jobs/436548500...

- Senior Bioinformatics Engineer, Oncology: https://job-boards.greenhouse.io/billiontoone/jobs/449603100...

- Senior DevSecOps Engineer: https://job-boards.greenhouse.io/billiontoone/jobs/449820000...

You can view all open roles on our careers page: https://billiontoone.com/careers/open-positions/.

Aleph is an AI-native platform for Financial Planning & Analysis (FP&A). We operate in an established software category with a multi-billion market but no clear winner. Our growth has come from product velocity and customer outcomes, not marketing spend, and the results speak for themselves.

We’re backed by top VCs (Bain Capital Ventures, Khosla Ventures, YC, Picus Capital), and work with customers like Eight Sleep, Webflow, Turo, Notion, Zapier and others.

Our tech stack: TypeScript, React, Python, Mongo, GCP

See all open positions and more details in https://www.getaleph.com/careers#open-roles

Foxglove is the leading observability stack for robotics and physical AI. We accelerate robotics development through industry-leading logging, cloud dataset management, and visualization/analysis for multimodal data. We're well funded (Series A, ~35 people), and assembling the most talented team in the industry to build a platform for all robots. Sound interesting? Join us!

Prior experience working in the robotics industry is desired but not mandatory for most roles.

** San Francisco, CA **

- ML / Robotics Engineer, Dev Relations (python, c++, rust, ros, lerobot)

- Principal Research Scientist, Physical AI

** Sunnyvale, CA **

- Staff Software Engineer, Frontend / Visualization (typescript, react, webgl, rust / wasm, etc)

https://foxglove.dev/careers

BOSTON (141 Tremont) or NYC (downtown) - hybrid in both locations; no remote

Layer Health was founded in 2023 by leading machine learning researchers from MIT and Harvard Medical School. We are building an AI layer that can accurately and scalably synthesize information from medical records, with the mission to reduce friction everywhere in healthcare. Our LLM-powered platform is solving chart review once and for all, across use cases. For health systems, our first product dramatically accelerates clinical registry abstraction in areas ranging from surgery and cardiology, to oncology. Our long term vision is for our AI layer to safely transform patient care and minimize unnecessary heartbreak. Layer Health’s diverse founding team brings expertise across machine learning, UI/UX, large language models, and medicine.

Work Location: HYBRID in Boston or NYC (downtown) Headcount: ~20

Stack:React/Typescript Frontend / Python Backend // GCP

Open Roles (all roles require a MINIMUM of 6 years of work experience) * Senior Fullstack Engineer (Frontend-leaning) * Staff+ Data Infra / Data Platform Engineer * Staff+ ML Infrastructure Engineer * Research Scientist (PhD's) * Head of Product / Chief Product Officer * Customer Success Manager * Solutions Engineer (healthcare/EMR implementations focused)

We Offer: * competitive offer packages (strong base salary + equity + great health/medical benefits) * unlimited PTO * fantastic engineering-first culture, in office 2-3 days per week in Boston and NYC offices

Email me at mike.hauschild@layerhealth.com for more info!

Prophet Town LLC | Full-Stack Software Engineer | REMOTE (US) and Hybrid | English fluency required | Full-time | $150K-$250K annual total comp (multiple)

I’m the founder, trying to do “enlightened business.” We are a small, worker-first, fully-remote, SF-based, boutique indie tech agency; for this posting we are hiring for our own internal employees. Our leadership staff are ex-Fortune 100; everybody codes. Notable recent projects: internal tools for Anduril, and voltagepark.com.

We are looking for Full-Stack Software Engineers with proficiency in React development, database design, and third-party API integration. Tier3 roles are typically 5-10 y/o/e with $150-$175k annual total comp. Tier4 roles are 7-20 y/o/e, $210-$250k annual total comp. Higher tiers exist, and we welcome exceptional applications. Fully remote positions available.

Please apply using this Google Form: https://forms.gle/7T29JpSdWgTbFgXj8. Applicants who submit before June 9 will receive a reply by June 20.

Applicants must meet a high bar; in return, I pledge my personal commitment to finding you interesting work and getting you good pay. You are free to submit again even if you have already done so in the past.

We are driven by our mission to help every couple get on the same page before marriage. We're disrupting an archaic industry in the law space. With our product market fit already in place, we’re poised to accelerate our growth.

We are seeking a capable Software Engineer to work on our growing engineering team. You'll work directly with customers and our stakeholders to drive impact, as well as take ownership of the delivery of end to end features on our platform.

We're looking for someone with Typescript, React, Node, and PostgreSQL skills to help lead implementation and drive innovation who also cares deeply about the customer and user experience.

Our tech stack: TypeScript, React, Node (Hono), PostgreSQL. All on Serverless AWS.

We are a fully remote team across the US and offer competitive compensation, paid for health insurance, and 401k benefits. We have a collaborative work culture that thrives on ambiguity and problem solving.

If you're interested email sam at our website, and mention hn in the subject.

At Sutro, we're building the next generation AI-native no-code platform. Our code base is mostly written in TypeScript, with React (Native) for the frontend, with a particular focus on complex agentic workflows and many patterns from the fields of compilers and the theory of software languages.

We are looking for an experienced full-stack engineer with experience in architecting agentic workflows, building tasteful UIs, and knowledge in the field of compilers and software architecture theory.

Our primary location is Oakland, CA, and as such, our core working hours with everyone online are 8 am-11 am California time. Feel free to hit me up with questions!

More details: https://withsutro.notion.site/Sutro-Senior-Full-Stack-Engine...

As a full-stack software engineer at Floryn, you’re joining us in building a fintech company which provides fast and easy access to credit for small and medium sized businesses. We’re somewhat like a bank, but without the bureaucracy and the white collars. You’ll be working at a landscape of applications that are responsible for wiring millions of euros, daily, directly into our customer’s bank accounts.

We are looking for both junior and experienced software developers. Software stack: Ruby on Rails, React and React Mobile, PostgreSQL, Docker and AWS.

Find out more: https://jobs.floryn.com/o/fullstack-software-engineer-sherto...

You'd be working with engineers who previously worked at Google, Amazon, Helsing, Darktrace and an F1 team. We build drones (software and hardware)

We're looking for engineers that straddle real world problems, and use technology as a solution. We prefer personal projects or relevant hobbies, not hard leetcode questions. We value collaboration: pair programming, discussing, teaching and learning from others. We're looking for mission-driven engineers. People who see problems in the world and want to help solve them.

You'd be working with me to build the most intuitive, performant, and modern mission planning and flight monitoring software for drones, and related applications (tools for drone design and manufacturing). For my project, we use React, Tailwind, Node, drizzle-orm, Postgres, SQLite, deck.gl, Python, FastAPI, asyncio, and more. You're allowed (and compensated) to use AI services.

Because we are a small team, you will be noticed and rewarded for performance.

*Please don’t apply if any of these resonate:*

• You prefer narrow ownership—“I only touch the backend or the code I've written”.

• You think it's more about "who you know, not what you know".

• You haven’t actively learned a new tool or hobby in the last year.

If interested, email my temporary email: hn-june25@mail.orth.uk with your CV and some personalised information about why you'd be the right fit.

My personal website, if you want to know who you would work with: tlduck.com

Yardstik is building the platform to reduce workforce risk.

Yardstik is fast growing, doubling each of the past 3 years.

One aspect that will drive that continued success is for our Technology organization to continue to build out the best Ruby on Rails Engineering team possible.

The “best” to us means we: - ship software that is trusted, used, and valued by our customers - focus our efforts on clear priorities - eliminate tech debt and do not allow it to hold us back

Looking for a Staff Engineer to join an already established/exceptional team to further drive our growth.

Learn more about the company at https://yardstik.com/

We power digital marketing platforms for GE, Equifax, Madison Square Garden, MLB, major universities, and more.

Looking for an engineer deep in Laravel (PHP) + Node.js, comfortable with MySQL/Mongo, and experienced in scaling backend services. Bonus: experience with Sendgrid, Twilio.

You’ll work across microservices, build performant APIs, and contribute to an enterprise platform used at scale.

Stack: Laravel, Node.js, React, MySQL, MongoDB, AWS Lambda.

Apply: https://ifolio.cloud/software-engineer-iii

We use React.js, Node.js, MySql, AWS

This position is 100% remote.

Please apply using the following link: https://www.notion.so/page-vault/Join-Our-Team-90d59fb2b9ca4...

For the referral question on application please specify 'Hacker News'

We are building a platform to manage data security and privileged access to servers, databases, VMs, MCP, cloud and other critical systems etc. Along with the access and authorizations, our customers can mask or tokenize data, discover and classify data sources, and manage workload identity.

What we are looking for:

- We are at the cusp of our 1-10 journey; we have quite a few customers. An engineer who is willing to get into the weeds of code as well as talk with customer and deliver an outcome

- Profound understanding of Kubernetes. Kubernetes is very core to our offering; therefore, profound understanding is necessary. The expertise required is not limited to a DevOps perspective; it also includes the ability to write Go code.

- Passion for technology and someone who is willing to be our product champion.

What we offer:

- Organisation is flat; engineers still report to me (founder)

- Fast paced, fast growing environment

- Quality of work, We consistently stay at the forefront of technological advancements. We build lot internal tools for testing, QA, internal release platforms

- US centric GTM

- Competitive salary

Total headcount is around 10 engineers. You will be joining a fairly small team.

More about the company - https://adaptive.live

Please feel free to reach out to me at debarshi[@]adaptive[.]live

Perpay is building financial products backed by users' paycheck direct deposit. We believe everyone deserves a chance to improve their financial future, and we’re dedicated to building simple and inclusive financial products that help our members create healthy habits and achieve economic stability.

We're looking for:

- A few Senior Full-stack Engineers (6+ years, and a preference for backend-leaning) across our 3 product engineering teams. We highly value product-mindset, experience building production web apps for real users, and ability to coach and support more junior engineers.

- An Engineering Manager for our Card team (currently 4 Engineers + 2 offshore contractors). Ideally, you have at least a year or two of experience leading people and being accountable for a team's execution, roadmap, and performance. You would be the third "line manager" on our team, and so there's ample opportunity to grab org-wide initiatives that are interesting and impactful.

Our stack includes AWS, Postgres, Python/Django, React/Redux, Datadog

Some other company notes / benefits: Open PTO policy, full health/dental/vision, remote weeks around major holidays + extra holiday on weekends like MDW and LDW, catered lunch 3 days/wk, 401k w/ solid match, cell phone plan, gym subsidy, and some student loan repayment match

Check out the full JDs here https://perpay.com/careers#open-roles , and feel free to reach out directly! karl at perpay dot com

Ascertain is a healthcare AI startup backed by Northwell (New York's largest health system) and Deerfield. We're a small team automating the painful admin work that clogs up the U.S. healthcare system — things like prior authorizations, discharge planning, and insurance claims. Our goal is simple: give time back to clinicians so they can focus on patient care, not paperwork.

We've found early product-market fit and are growing the team thoughtfully. We're hiring senior engineers across the stack: backend, frontend, and AI/LLM. We're NYC-based and hybrid (most of us come in ~3 days/week). We're not counting badge swipes — we just want teammates who want to be in the room with us often enough to build trust, have fun, and work on hard problems together!

What we're building:

* A general-purpose automation platform for healthcare ops, powered by LLMs

* A system that reads unstructured documents, fills out payer forms, and explains rejections

* Tools to automate patient discharge planning in hospitals

* A foundation for making AI in healthcare safe, observable, and human-in-the-loop

What we're looking for:

* AI Engineer — experience productionizing LLM apps (agents, RAG, embeddings); solid Python; knows how to build ML systems that ship

* Backend Engineer — strong Python/FastAPI; infra-savvy (K8s, Terraform, Docker); thoughtful about API design and scalability

* Frontend Engineer — React/TypeScript expert who's opinionated about UX and happy to dip into backend when needed

More importantly, we're looking for engineers who like open-ended, ambiguous challenges, and want to work with a tight-knit, high-trust team to solve real-world problems.

Pleas remember that we are looking for NYC local only, no exceptions at this time :(.

I'm a Principal Engineer here — if anything here resonates, drop me a line at john@ascertain.com or apply at our job board using https://grnh.se/f303c36d6us!

Respondology is working on a social media comment activation platform, building tools to automatically hide spam, abuse, and hate comments, understand audiences, and respond to users using GenAI/LLMs. We are a small team that just raised a recent funding round and are rapidly growing. We are looking to hire a Senior Backend Engineer with significant experience with Python, experience with Opensearch/Elasticsearch is also a plus [120k-140k + equity + bonus]. Our core tech stack is: React, a core Ruby-on-Rails monolith with Python+FastAPI microservices, Postgres, AWS. We are based out of Boulder, CO, but the engineering team is distributed across the US. Learn more here: https://respondology.com/careers/

We’re the fastest growing startup building AI products to transform how IP professionals work. We’re building an AI-powered end-to-end platform to help with every aspect of invention harvesting, patent generation, and IP portfolio management.

We’re backed by Y Combinator, 20VC, Microsoft, and Thomson Reuters ($15M raised). We’re looking for super-talented engineers to help us build out our products extremely fast. You’ll be joining the most lean, talent-dense, and fast-moving engineering team in London.

Tech-stack: AWS, Terraform, Postgres, FastAPI, React, Tailwind

For more details, and to apply: https://www.ycombinator.com/companies/solve-intelligence/job...

* Backend Engineer (Python)

* Frontend Engineer (React)

* Site Reliability Engineer

Close is a bootstrapped, profitable, 100% remote, ~100 person team of thoughtful individuals who prioritize taking ownership and making a meaningful impact. We’re eager to make a product (Sales CRM Software) our customers fall in love with over and over again.

We’re looking for high achieving, full-time Software Engineers to join our team. Folks who have a good understanding of web technologies and want to help design, implement, launch, and scale major systems and user-facing features.

https://jobs.ashbyhq.com/Close?utm_source=zEjmA7953Z

We need help building & evolving features to help care agencies run their operations better. Everything we do to improve operational effectiveness for care agencies leads to a better quality of life for everyone involved. We have extremely big ambitions and are building at a rapid pace towards them.

* We need a full-stack engineer with a leaning towards the backend

* Seeking someone who knows how to design and maintain complex systems to a very high quality bar

* You are AI aware with a desire to get into the weeds of prompt and pipeline engineering

* We're Django on AWS with React for interactive interfaces

* We focus on quality, not quantity

* Profitable & independent with lofty long-term aspirations

* The process: 30 min alignment call, time-limited sensible coding test, 1 hr meet the stakeholders Zoom, offer

* You: someone who wants to apply your skills to meaningful problems, cares about your craft, has strong engineering skills and enjoys personal development.

Apply by expressing your interest to james @ weareoncare com with a CV/Linkedin and a "cover letter" that gives me an idea what you're looking for and how you could be a good fit.

Recruiters: you do a sterling job of connecting people but we only deal with direct applications.

ZioSec is a venture-backed cybersecurity startup building the first offensive security platform for AI agents. We're looking for two Senior Full Stack Engineers, one who leans front-end (React / Typescript), and one who leans backend (Rust, Terraform), andf strong across the stack—especially in Rust.

This is a founding team opportunity with a small, high-performing team. We just closed our seed round with top-tier investors.

Check out ziosec.com/careers.html

We're building AI agents to transform how B2B companies scale customer relationships.

I'll let our customers do the talking: "I'm super excited!! You're changing our lives!!" - Account Manager for Emerging Enterprise (mid-market) accounts that don't usually get very much support

Fresh off our seed round from Acrew Capital, Emerson Collective, Recall Capital and notable angels from LinkedIn, BetterUp, Glean, and Scale AI, and others we're looking for founding engineers to help realize our vision.

Tech stack: Python, FastAPI, React, Vite

You can learn more here: https://www.cora.ai/careers#Our-roles

If you are interested, email us at careers [at] cora.ai — These emails go to me, and I review each one of them.

Feel free to reach out if you're interested or have any questions

Polaron is an Imperial College London spinout using generative AI to bridge the gap between process (how materials are made) and performance (how materials behave). We’re building a platform that enables materials designers to use these state-of-the-art AI techniques in their day-to-day work. We’re a small, well-funded team, and recently won the UK Government’s inaugural Manchester Prize [2] for AI innovation and public good.

As a Software Engineer at Polaron, projects on our roadmap you could work on include:

- Scaling our canvas-based frontend to handle images with greater than 10k x 10k pixel resolution. - Intelligently autoscaling our GPU cluster in response to customer demand. - Building a public-facing API, in addition to our web-based interface.

Tech Stack: TypeScript (React / Next.js / Express / Prisma), Python (PyTorch), PostgreSQL, Docker, Kubernetes, AWS, Terraform.

Apply via our jobs page: https://apply.workable.com/polaron.

If you’d like any more information, please reach out at: [careers@polaron.ai](mailto:careers@polaron.ai).

[1]: https://www.imperial.ac.uk/news/250657/ai-spinout-polaron-ac...

[2]: https://www.gov.uk/government/news/british-start-up-wins-1-m...

Beacon AI builds R2-D2 for pilots. We are on a mission to make flight safer, more efficient, and accessible for commercial and defense aircraft operators by applying technology to the flight deck. We are building a modern technology stack with a data platform and web application (Lighthouse), and in-cockpit assistant (Murdock).

With new contracts in both defense and commercial aviation, and a $15M Series A in Q3 2024, we’re scaling quickly. We're backed by Costanoa, Scout, Sam Altman, and JetBlue Ventures - and we’re hiring across engineering to support our next phase of growth.

We're hiring for many Senior and Staff-level positions:

* Edge/Autonomy Engineer, Advanced Pilot Assistant Software (C++, Python)

-- This application also works for adjacent roles like tracking, prediction, behavior, or route/path planning optimization.

* Backend Engineer (TypeScript, Python)

* iOS Engineer (Swift, SwiftUI)

* Frontend Engineer (React)

* Cloud Infrastructure Engineer, IoT/Edge (AWS)

* TPM (Software) and TPM (Federal Programs)

We'd love to hear from you if you’re excited to push the envelope in aviation tech. Apply directly at https://beaconai.co/careers and mention you found this post on HN. Let’s revolutionize flight together!

Join us at Snout on our mission to ensure no one ever has to make a health decision for their pet based on the cash in their bank account. Snout plans pay for 100% of routine veterinary care, unlimited visits, and additional member benefits - think pet insurance, that you will actually use every year.

Principal Software Engineer - You will be working on our core wellness product, launched late-2022. Work includes the addition of new wellness plan features and capabilities, enhancement of user experience, testing and operation of the wellness platform, and special projects that arise from time to time. We frequently work cross-functionally and you can expect to write code and perform technical operations for our marketing, sales, and support efforts, as well.

Our tech stack includes Node.js, React, PostgreSQL, AWS, and Tailwind. We use both JavaScript and TypeScript heavily.

To apply please visit our careers page: https://jobs.gem.com/snout

We're a small startup team consisting of fewer than 25 people. Successful team members are comfortable participating in spirited and detailed debates to establish product and technical plans, and then taking initiative and ownership to deliver on those plans quickly and effectively. Our team is collaborative. You can expect to meet with the team on a daily basis, pair regularly, and participate in slack discussions throughout the day. We keep pacific work hours and expect the team to be available during 9a-5p at a minimum. If you're looking for a team where you can carve out your area of responsibility, work with experienced partners who have your back, grow your role alongside the growth of the company, and take a product to the moon, then we should talk.