React Jobs - April 2026

Adclear | Senior Fullstack Engineer | London, UK | HYBRID (4 days/week) | Full-Time

We're turning compliance from a bottleneck into a creative advantage for regulated brands. Clients include Monzo, Lloyds, PensionBee, and Plum. Raised £2.6m+ from Outward VC in our first 14 months.

The problem: we run multi-agent AI pipelines that evaluate regulated marketing content in real time. The model landscape moves fast and our architecture has to move with it. You'd own how these systems evolve in production, working directly with the CTO and AI engineers, while also shipping across the full stack.

Stack: TypeScript, React, React Router v7, Tailwind, shadcn/ui | Hono on Cloudflare Workers, Drizzle ORM, PostgreSQL (Neon) | Python, FastAPI, LangChain + LangGraph | GitHub Actions

We're 6 engineers. You'd have real input into architecture, tooling, and how the team operates. We use Cursor, Claude Code and Greptile day-to-day.

£75-95k + equity. Private healthcare, gym budget, hardware budget.

Apply (mention "Hacker News" in your notice period section): https://www.adclear.ai/jobs-seniorengineer

Subject: Full Stack Engineer Application - Fatima Usman

Location: Remote (PKT)

Hi,

I’m reaching out regarding your recent post in the HN "Who is Hiring" thread. Stack: React, TypeScript, Node.js, PostgreSQL, Express.js.

What I've shipped:

AI-powered fashion platform (PERN + OpenCV) — Team lead; earned 2nd place at a national competition for a clean, modern UI and complex data processing.

Full-stack music app (React + Node.js + REST API) — Developed during my time at Red Buffer.

15+ Figma-to-React component builds — Expert at translating high-fidelity designs into pixel-perfect, responsive components at PixelSoft Solutions.

Happy to share my GitHub, CV, or jump on a 15-minute call to discuss how I can help scale your platform.

Best,

Fatima Usman fatimaausman8@gmail.com

Pinwheel | Full-Time | Hybrid (NYC) | Series B | https://www.pinwheelapi.com/company/careers

Pinwheel is the Plaid for payroll — APIs and SDKs that give banks, fintechs, and lenders real-time, consumer-permissioned access to payroll data across 1,800 platforms covering 80% of US workers.

- Fullstack Engineer (backend-leaning) - https://grnh.se/y0rp77go3us (Python / Django, Go)

- Fullstack Engineer (frontend-leaning) - https://grnh.se/1e2ort3e3us (React, Next.js)

Hybrid 3x/wk in NYC (Union Square)

Visa sponsorship not available.

Formical | Software Engineer | ONSITE (Hybrid - Delft, Netherlands) | Full-time | https://careers.formical.bio

At Formical, we believe we can become the first sustainable generation on Earth. Biotechnology plays a key role in this future - benefiting all people, animals, and our planet by making industrial production more sustainable. But bioprocessing still runs on fragmented data and tacit knowledge. The infrastructure to turn data into the intelligence that teams need to scale doesn't exist yet, hindering the sector’s progress. Our product accelerates bioprocessing by connecting fragmented data, enabling predictive modeling, and ultimately closing the loop between measurement and action.

We're not looking for specific skills, just willingness to learn. I joined a couple months ago with little React/TypeScript full-stack experience, but with CC I managed quite well coming from a Python backend background. Nothing's enforced though! We're a small team, have some customers, and are looking to build out the platform and the client-base significantly this year.

Apply via the link above!

Scite (scite.ai) | Senior Developer | REMOTE (US)

We build AI-powered tools that help researchers and organizations make sense of the scientific literature. Small team, hard problems, real momentum. Our MCP server just launched, enterprise adoption is growing, and the product roadmap is full of ambitious bets.

Stack:

Frontend: React 18, Redux/Redux Saga, Webpack, SWC, Express (SSR), CSS Modules Backend: FastAPI (Python 3.11), Flask, PostgreSQL, Elasticsearch, Redis, Celery AI/ML: Claude (Anthropic), OpenAI, PyTorch, Hugging Face Transformers, sentence-transformers, RAG pipelines

Infrastructure: AWS (ECS Fargate, RDS, S3, Lambda), Docker, Kong API Gateway, GitHub Actions, CircleCI

Observability: OpenTelemetry, New Relic, Sentry, PostHog

Other: Stripe, SendGrid, Playwright, TypeScript

What we're looking for:

Strong engineering fundamentals Comfort working across the stack, Python and JavaScript/React in particular Experience with PostgreSQL, Elasticsearch, or similar data-intensive systems is a plus

Familiarity with LLM APIs and retrieval-augmented generation (RAG) is a bonus Genuine curiosity about how AI can improve how people interact with research

If you're interested or know someone who might be a great fit, email josh@scite.ai

Onton.com | Fullstack & Research Engineers | San Francisco, CA | Hybrid Join us in pioneering the future of e-commerce search. Growing rapidly.

We're a hard-working team of 10. We have an office in Jackson Square with a great view that we're looking to fill with other high-performance people!

Tech-wise, it's React/Typescript + Julia, if that's interesting (no worries if you haven't used it). We've also built our own graph and vector DB to cope with the scale, and the foundations of a neuro-symbolic AI agent that learns more about the world on every search!

Job posting and more information here → https://onton.com/careers

We read and respond to every application.

CVector | Software Engineers, Senior Research Engineer | New York City (FiDi) | ONSITE | Full-time | VISA SPONSORSHIP

CVector builds software to bring real time economic optimization and AI prediction to every energy and manufacturing plant. 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. You'll help create intuitive, robust web apps, machine learning models and backend systems, shaping tools that directly impact industrial operations and energy reliability. Build AI agent systems that automatically foresee upcoming problems and provide possible solutions.

CVector recently raised $5M seed, read more on TechCrunch: https://techcrunch.com/2026/01/26/ai-startup-cvector-raises-...

Full Stack and Backend Software Engineers: We're looking for a passionate Software Engineers comfortable working across our stack (Python, Typescript, React, Supabase, MQTT, TimescaleDB, PostgreSQL, AWS, FastAPI) or someone to specialize in our backend infrastructure.

Senior Research Engineer: Candidates should be experienced with machine learning, and analysis using Python.

Reach out to me at jnapoli+hn@cvector.com

HIFI Labs (https://hifilabs.co) | Remote (US) | Senior Fullstack Engineer / Engineering Manager

Join HIFI Labs and work on innovative projects with well known and iconic musicians. Past artist activations include Bruno Mars, Linkin Park, Jisoo / Zayn,Rüfüs Du Sol, Dua Lipa, and Mike Shinoda. We're looking for a Senior Fullstack Engineer passionate about design, user interactions, and privacy.

You'll work with TypeScript, React/Next.js, Firebase and explore new frameworks like Astro. Experience with Styled Components, continuous deployment and devops is a plus. We also play around with React Native / Expo.

Sound like a fit? Email us at pierre at hifilabs dot co

Verkada | Frontend Engineer | ONSITE Full-Time San Mateo CA

I'm Kris, a manager on Access Control at Verkada.

Access Control is a core product at Verkada. We build the systems that power how customers secure and manage their offices, schools, and campuses. Our software unlocks nearly 8 million doors every day. These are mission-critical systems, not internal tools, and reliability and usability matter a lot.

My frontend team builds more than small widgets or forms. We design and deliver entire workflows that bring clarity to complex systems - managing doors, groups, schedules, users - all within a unified, elegant interface. This means working closely with world-class designers (and debating them when needed), but also having the vision and technical depth to lead when design resources are scarce.

I'm looking for a React expert who can bridge craft and leadership: - Lead technically within the frontend team, setting patterns and guiding others. - Collaborate deeply with our web infrastructure and component library teams to shape the building blocks of our platform. - Champion UX - because building secure, intuitive experiences at global scale is as much about design empathy as it is about React/Redux mastery.

This is a team for engineers who want real ownership, visible impact, and problems rooted in production reality. Verkada is pre-IPO with a $5.8B valuation, and the entire engineering org is about 350 people, which keeps scope high and teams relatively autonomous.

Job description: https://job-boards.greenhouse.io/verkada/jobs/5070042007

Email me: kris.linquist at verkada.com

River | Senior + Staff Engineers (Elixir, React, ML/AI) | SF or NYC or REMOTE (US, Europe, South America) | Full-Time | $150K-$250K + equity | https://jobs.ashbyhq.com/river

I'm Alex, founder and CEO of River. I also wrote the first line of code and still ship PRs.

River is a client-first Bitcoin-only financial institution building the financial app people use every day to save in bitcoin and spend in dollars. We custody over 25,000 BTC, serve individuals and businesses across the U.S., and are profitable. We publish cryptographic proof of reserves monthly and our company financials annually.

Here's what our engineering team is working on:

- Real-time Bitcoin and USD payments, trading, and settlement on an Elixir monolith with a unified GraphQL API - Next-generation Bitcoin custody with quorum signing, key ceremonies, and geo-redundant infrastructure - Scaling our ML/AI systems (Python, PyTorch, XGBoost, LLMs) to automate operations and tackle fraud/risk - A ground-up React and React Native rewrite of our consumer app - Porting our Lightning Network infrastructure from Go into Elixir We're hiring:

- Senior Software Engineer (React, Full-stack) | $150K-$220K - Staff Software Engineer (Elixir) | $200K-$250K - Staff Software Engineer (ML/AI) | $200K-$250K Apply at https://jobs.ashbyhq.com/river?utm_source=Zp9nJyqvd4

Bubblehouse | Fully REMOTE | Full-Time | $200–250k | Principal Engineer

Bubblehouse is a fast-growing custom loyalty platform, tripling the revenue each year. Headquartered in NYC, the entire team is fully remote and spread across the globe. We power loyalty programs for brands like American Girl and Old Spice.

We’re expanding our lean team of extremely experienced developers. Companies are switching from other platforms thanks to the customizations and flexibility that we offer, enabled by our pace and technical excellence, which we intend to keep for years to come.

We run on Golang and use custom data storage on top of local key-value stores, colocating the storage and compute on dedicated hardware servers, and reading data directly from mmap’ed pages of the database. Ever came across HN saying that one can run Twitter on a single machine these days? We’re doing that in production.

Zero lines of React, almost zero third-party dependencies (carefully vetted), every line of JavaScript manually written with respect and understanding of the web platform. We render HTML server-side like it’s 2005.

Looking for:

1. Top to bottom understanding of the software stack, from the modern-ish web platform to CPU caches.

2. Thinking and problem solving outside the box. (We don’t _always_ go for unconventional solutions, but we do it often enough to require a person who can do justice considering the entire problem space at every step.)

3. Demonstrated ability and hunger to learn new things quickly. (Every month we’re doing things we have never done before.)

4. Broad experience across multiple programming paradigms, platforms and software stacks.

5. Demonstrated care for the software craftsmanship (which can take many forms).

6. Great spoken English, and ability to communicate 9am to noon in New York time zone.

We give you a literally fast-paced environment (with features delivered in days) where you need to solve very challenging problems with practical advanced technology, take on entrenched market leaders, and help entrepreneurs across small and large businesses delight their fans.

Send a plain text cover letter to andrey+hiring@bubblehouse.com. Help us see how you stand out. Summarize your experience. Link to 1–5 impressive things you’ve built and proud of, link to where we can see some of your code, include your portfolio/CV, describe the platforms and stacks you’re an expert in. How did you start programming? What are you most passionate about in technology? What are the most interesting or weird things you’ve done? What are your strongest held professional opinions? Please make your email easy to read, we’ll appreciate that.

(If you have applied before, no need to re-apply, we’ll reach out.)

Sequent Tech | Senior Fullstack Engineer | REMOTE (Global) | Full-time | sequentech.io

Sequent builds cryptographically secure online voting infrastructure used in 200+ real elections across multiple countries. We're a fully remote team working on an open-source platform combining Rust, TypeScript, and modern DevOps. We handle End-to-end encrypted voting, cryptographic mixnets, and tamper-evident logging.

Tech Stack: Rust, TypeScript/React, WebAssembly, GraphQL, PostgreSQL, Kubernetes, Keycloak, ImmuDB

Open Roles:

Senior Fullstack Engineer (Rust + TypeScript/React)

AI x Healthcare Startup | Boston, MA Onsite | Full-time | Early Engineer

We're looking for a backend-leaning fullstack dev. You will be one of the first engineers outside of the founding team. Here is a bit more about us: We're a seed stage AI startup backed by top tier investors. We're on a mission to ensure every patient gets covered for the care they need and every doctor gets paid for the work they do.

We’re building deep, vertically integrated technology systems to solve fundamental problems in US healthcare - the biggest market in the world ($5T). We use AWS, K8s, React, and Rust but there is no requirement to have prior experience with them specifically. We'll teach you!

We are a founding team made up of ex-YC, Amazon, Meta, Microsoft, and Harvard Business School with previous successful exits.

You’ll own entire product areas and be expected to play a true full-stack role, with the ability to go from customer need to end-state product. You’ll work directly with the CTO at the edge of what's possible with LLMs and agentic systems applied to a hard domain. You'll contribute to technical strategy, make real architectural decisions, and write vast amounts of production code with AI first developer workflows. Most importantly, the technology you build will have real impact on real people - clinics staying open, clinicians getting paid, patients getting care.

This is an opportunity to work in a fast paced, high ownership environment while solving real problems in healthcare.

We're happy to share more details on the role in person/on zoom. Please fill out this form if interested!

https://wgwx7h7be0p.typeform.com/to/LV0t8OjI

Mixpeek | Senior Infrastructure Engineer, Applied AI Engineer | NYC or REMOTE (US) | Full-time | https://mixpeek.com

Mixpeek is multimodal AI infrastructure — we turn unstructured content (video, images, audio, documents) into searchable, programmable assets through a unified API. Think of us as the data infrastructure layer that sits between your raw media and your AI applications. If you've ever tried to build a pipeline that extracts features from video, makes them retrievable, and serves them at scale — you know this is a 12-18 month infrastructure project. We compress that to an afternoon.

We're currently building MVS (Mixpeek Vector Store) — a distributed vector database built on Ray + S3, designed to handle 100B+ vectors at a fraction of the cost of existing solutions. Architecture details: shard-level WAL, LIRE-based adaptive search, replica sets, and agent-native query primitives. If you've ever wanted to rethink how vector search works from the storage layer up, this is that project.

Some things we're shipping right now:

- IP safety for media & sports — our copyright detection platform (https://copyright.mixpeek.com) helps brands and leagues detect unauthorized use of visual IP at scale. We're working with partners in the media/sports ecosystem including Backblaze for storage-native integration.

- Healthcare pipelines — multimodal extraction for clinical trial recruitment and SNF/MDS coding workflows, working with enterprise partners in the space.

- Ad verification — we contribute to the IAB Tech Lab ARTF working group and power contextual intelligence for ad safety.

Our core primitives: feature extractors, retrievers, taxonomies, clusters. Decompose with extractors, recompose with retrievers. Docs: https://docs.mixpeek.com

Stack: Python, Ray, S3, FastAPI, React/TypeScript. We also maintain amux [https://github.com/mixpeek/amux], an open-source tmux multiplexer for running parallel Claude Code agent sessions — if you're into agentic dev workflows, check it out.

I'm Ethan (founder/CEO, previously led search at MongoDB). Small team, high ownership, real problems. We're preparing for NAB Show next week and scaling enterprise pipeline work across healthcare, adtech, and media.

Reach out: ethan [at] mixpeek [dot] com — mention HN.

Cultivate AI | Senior Software Engineers | Durham, NC | Hybrid (open to remote)

We're building an AI platform for credit unions. A variety of tools (third party integrations + RAG) backed by multiple LLM options, including OLMo, running in our own AWS infrastructure. We're a small team (I'm CTO and our first technical hire) so you'd have real ownership over the AI stack and architecture.

You'd work on retrieval over heterogeneous corpora with citations, agent orchestration and tool calling, model serving infra, and third party API integration. There's a lot of room to experiment with hierarchical retrieval, heavier upfront document processing, and custom agent tooling. Over time we're going to expand into fine tuning, more direct compute management, and some interpretability work.

Stack: Python/FastAPI, React, PostgreSQL/pgvector, AWS/OpenTofu. Looking for someone with a few years of experience building production systems.

Email me at talati@getcultivate.ai if you're interested!

Stellar | Amsterdam, the Netherlands | Onsite (2 days remote OK) | €70-100k + equity | https://stellarcs.ai

Hey, I'm one of Stellar's founders. We're building AI for large contact centers, our primary product is voice.

Everyone thinks contact centers are boring. They're wrong. It's the last place where companies actually talk to their customers. We listen to calls every week and it's fascinating. AI here helps real people: shorter wait times, 24/7 support, lower cost. We’ve helped companies go from 60 to 98% pickup rate in weeks.

We're bootstrapped, 10 FTE, cash-flow positive, and growing fast with household names in the Netherlands and Belgium. Doubling our volume every month for the last 4 months.

We’re all builders. Everybody in our company still writes code. We have 2 roles open:

1. We need product minded engineers who can jump between our Go and TS backends and React frontend.

2. We need implementation leads that love working with clients. FDEs welcome as well.

This role is perfect if you:

* Want massive ownership at a small team

* Actually enjoy solving hard problems (real-time audio at enterprise scale)

* Think making AI sound human in niche dialects is a fun challenge

Find the full vacancies here: https://www.stellarcs.ai/careers

EU work authorization is required. No visa sponsorship available.

Apply: e-mail is in my profile, please indicate HN in your e-mail.

flaconi | Germany / Berlin | Full Time | https://www.flaconi.de | e-commerce

flaconi is an online e-commerce for beauty products, founded in 2011 in Berlin. We are active in 12 countries and expanding to more. We're primarily on AWS, use React, Next.js, Vercel for web, Flutter for our mobile app - you will find more details on the job listings.

Note: Visa "sponsorship" takes a while, so ideally you already are in EU / Germany with a work permit.

1. Staff Software Engineer - Frontend - €85.000 - €105.000 EUR - https://grnh.se/kke6q552teu - we will very likely work together. Happy to answer questions.

2. QA Engineer Mobile - €60.000 - €83.000 EUR - https://grnh.se/ad3i2y62teu

Apex Dental Partners | Full-Stack Developer | Dallas, TX (Remote US or Hybrid) | https://www.apexdp.com

We're a Dental Support Organization running 59 practices across TX/OK/CO/MO/IA/NE/TN/AZ. The unsexy industry description hides what's actually an interesting technical role: a small dev team with real ownership, pushing hard on automation and AI to make dental operations actually work well.

Stack is primarily Rails 7.1 (Hotwire+Stimulus.js), with some React/Electron, C# .NET (OpenDental), and tiny bit of Go — all on AWS.

You'd be joining a tight team where developers own problems end-to-end: from understanding why a billing workflow breaks down, to designing the fix, to shipping it. The domain is surprisingly broad — patient communication, PMS integration, payroll, clinical workflows — and there's no shortage of genuinely novel problems once you learn the business.

Good fit if you like: stable company, small team, broad latitude, and work that visibly matters to the people using it. Not a fit if you need a large eng org — but there's plenty of greenfield work as we're still actively building new features, not just maintaining legacy code.

Drop me a line: dhanson [at] apexdp.com

BetterDB (https://betterdb.com) (https://github.com/BetterDB-inc) | Founding Engineer | Remote | Full-time

BetterDB is building the tooling ecosystem for Valkey, the high-performance Redis fork backed by AWS, Google, and Oracle. We're starting with observability — historical persistence, pattern analysis, anomaly detection, and Prometheus export — so you can debug what happened at 3am when you wake up at 9am.

Stack: TypeScript, NestJS + Fastify, React, Valkey, PostgreSQL, Docker, Kubernetes, Terraform, AWS.

We ship OSS self-hosted and have a live cloud SaaS: https://betterdb.com/login In the last two months we've averaged more than one release per week across multiple products and channels. That's what "moves fast" looks like in practice.

We hired our first engineer last month and are looking to expand the team — no pressure on timeline, we'd rather find the right person.

To apply, first run BetterDB and use your email as the license key for npm/docker, for cloud just register with the same email you are applying. Pick whichever is easiest:

Cloud (no setup): https://betterdb.com/login Via npm (includes a built-in installer): npx @betterdb/monitor Via Docker: docker run -d \ --name betterdb-monitor \ -p 3001:3001 \ -e DB_HOST=your-valkey-host \ -e DB_PORT=6379 \ -e BETTERDB_LICENSE_KEY=your@email.com \ betterdb/monitor:latest Then email kristiyan@betterdb.com with a bit about yourself and why this is interesting to you.

I reply to everyone. It might take a day or two given volume, but you'll hear back.

Oneleet (YC S22) | Multiple Roles | US & NATO Countries | Remote | Full-time Oneleet is an all-in-one cybersecurity startup that has built its own Attack Surface Monitoring (ASM), Code Scanner, Endpoint Protection, and Compliance Platform. We recently raised a Series A and are growing at an rapid pace and working on some very exciting projects.

What we're looking for:

- Strong problem solvers who can work independently in a remote environment

- Security-minded professionals passionate about building robust, scalable systems

- Comfortable working during Eastern Time

Tech stack: Go, TypeScript, React, Kubernetes Open roles

* Application Software Engineer, Endpoint Security (macOS experience preferred)

* Fullstack Engineer, AI Implementation

* Senior Product Designer

* GTM Engineer

* Customer Support Specialist

We offer: - Competitive salary

- Equity in a fast growing cybersecurity startup

- 100% remote work

- Company offsites yearly (past offsites have been in The Netherlands, Portugal and Italy)

If you're interested in joining our team, please reach out to join<at>oneleet<dot>com with the subject line "HN: <Job Title>" and your resume attached. Alternatively, you can also apply at https://jobs.ashbyhq.com/oneleet

Additional Note: We are also building out a 'forward deployed' sales team based in San Fransisco - if interested, please reach out to join<at>oneleet<dot>com with the subject line of `HN: SF Sales`

Duel | Tech Lead / Staff Engineer | Bristol, UK (Hybrid)

Tech stack: Angular moving to React | Node / Bun | ECS | Mongo | Snowflake

Small team doing big things.

We've taken the team AI native, the platform will be there withing a few months. An existing v1 platform built with "boring" technologies allows us to make sure money and data remain safe whilst ensuring the frontend can be built at the speed that AI enables.

One of our team is taking everything they've been playing with for the last couple of years and stepping in to a YC principal role with our blessing. We're looking for their replacement to help continue bringing the team to the same level.

We've spent years creating the brand advocacy category, and are now seeing huge growth in all areas. We took Series A last year, are seeing massive growth, and still finding the time to have fun.

You need to back yourself. We'll expect a lot form you, but you'll be given the autonomy you need to do your best work. We focus on hiring bloody brilliant, utterly lovely people.

No recruiters. The role is being opened as we speak (I'm on holiday, spotted the who is hiring!); for now, please reach out to: joe via duel.tech.

North Island Ventures | Software Engineer | NYC (4x / wk in office) | ONSITE

North Island Ventures is a crypto-focused investment firm. We are hiring a 2nd engineer to join our CTO in building out an AI investment stack using Python, Typescript, and React. We built out an investment agent that our research team is already using for hours a day, and finding it much more efficient than using Excel for modeling.

The role will involve full stack work and working closely with our investment team - who sit next to you - to figure out how to best integrate LLMs into a real business.

If this sounds interesting please apply here, and mention you found us on HN!

https://form.typeform.com/to/WDaBGW33

You can also email me at david [at] northisland [dot] ventures

Read more on us: https://northisland.ventures/ and https://tech.northisland.ventures/

RINSE | REMOTE or San Francisco, Los Angeles, Chicago, Boston, New York City, New Jersey, Seattle, Austin, Toronto, or Washington DC | Software Engineer | Full-Time | Salary: $80k-$200k USD | https://www.rinse.com

Rinse provides dry cleaning and laundry delivery services to customers in twelve metropolitan areas in the US and Canada. We have sophisticated logistics optimization software, a polished consumer product, and firm business fundamentals. We're now over a decade old - this is a stable, yet consistently growing and innovating, company.

Our engineering team is distributed across the United States and internationally, and has been entirely remote for years now, but a desk can be provided in the above cities if you'd prefer.

We're open to both newly-graduated engineers or more senior engineers, provided they meet our bar. We're particularly interested in true full-stack engineers, with strong React / Typescript / CSS skills to complement comfort in a Python / Django environment. We're also seeking engineers with experience leveraging AI to automate complex operational processes.

This season, we're particularly interested in new grads or junior engineers, to round out the team.

You will join a high-caliber team where collaboration, honesty, and open communication are at the core of everything we do.

Search term bingo: Logistics, Django, Python, Optimization, React, React Native, Postgres, Mobile Engineer, Automation, Delivery, OR-tools, Forecasting

Civilization Labs | Full Stack Engineer | Remote (US) | Full-time

Civilization Labs is a Public Benefit Corporation building tools to help people pressure-test ideas before acting on them. Our products are designed to make reasoning more transparent, surface uncertainty clearly, ground conclusions in evidence, and help turn good judgment into better execution.

We’re hiring a Full Stack Engineer for an early-stage, high-ownership role spanning product, backend, frontend, infra, and AI-enabled workflows. This is a role for someone who likes ambiguity, moves fast, and wants to build tools that help people think more clearly and decide better.

Stack: Python, Node.js, Next.js, React, GCP, CI/CD, IaC, microservices, databases, messaging, monitoring. Rust/WASM and blockchain/protocol experience are a plus.

Comp: $160k-$185k base, flexible cash/equity mix.

Learn more and apply: https://civilization-labs.com/jobs

Findigs | Full-time | NYC | 3x/week in office (M,T, Th) | findigs.com

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 Python, Typescript, 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:

Lead Software Engineer (https://jobs.lever.co/findigs/1ea92751-1c85-4eb6-84b4-86c529...)

Senior Software Engineer (https://jobs.lever.co/findigs/3b39616d-223f-4326-a500-f804c3...)

Mid-Level Software Engineer (Mid-Level) (https://jobs.lever.co/findigs/5e865781-244f-4e4f-b7bd-e09973...)

Competitive Base Salary plus Pre-IPO Equity

401k Matching up to 4%

Unlimited PTO

Lunch in office every day, home office setup stipend, monthly gym stipend

Anduril Industries | mid/Sr/Staff Full Stack Software Engineers, ArsenalOS Team | Costa Mesa, CA ideally, (would consider remote with travel) | JavaScript/TypeScript, React, Node/Next.js, PostgreSQL

Anduril's ArsenalOS handles all receipt, manufacturing, deployment and maintenance of all Anduril hardware that is shipped to our customers. We are looking for a Full Stack Senior Software Engineer to join the ArsenalOS team. As a Full Stack Senior Software Engineer on ArsenalOS you will be architecting and implementing mission-critical solutions that enforce lean business process, add multiplicative leverage to Anduril employees, and scale Anduril into a next-generation defense prime.

WHAT YOU’LL DO: -Own and deliver features for Forge, Anduril’s production platform. -Level up our team’s applications through quality code contribution and writing tests. -Leverage frontier AI tooling for development, and contribute to our local Forge harness. -Partner with the factory floor to enable high rate build of Roadrunner, Fury, and other Anduril products. -Join an on-call rotation for Forge support of the production floor. -Collaborate cross-functionally with systems architecture, software product and design, factory systems, and production digital tools.

Please apply here: https://job-boards.greenhouse.io/andurilindustries/jobs/5036... .

Beacon AI | San Carlos, CA | Hybrid (On-Site) | Full-Time | www.beaconai.co

Beacon AI builds intelligent systems that make aviation safer and more autonomous. We’ve completed multiple DoD programs and are expanding our team with exceptional technical leaders to push the boundaries of human-machine collaboration in the cockpit. At Beacon, you will lead by example, mentoring and growing a small team of talented engineers (typically 1–2 to start) while staying hands-on in design and execution. You’ll help shape critical systems that advance aviation safety and autonomy, working alongside a team that values effort, creativity, and accountability.

We’re hiring Lead Engineers with 5-9 YOE who love solving complex problems. At Beacon, you’ll own your work end-to-end, from prototype to deployment, and literally see your code take flight in real world aviation environments! Roles:

++ Lead iOS Engineer [Tech Stack: Swift, SwiftUI, UIKit, Mapbox]

++ Lead Infra/Backend Engineer [Tech Stack: AWS]

++ Lead WebApp/FrontEnd Engineer [Tech Stack: Python, Typescript, React]

++ Lead Autonomy/Robotics Engineer [Tech Stack: C++, Python, iOT]

Join us at beaconai.co/careers. Mention in the application that you saw our post on HN.

Aha! (https://www.aha.io) | Rails / React / Devops | REMOTE

Aha! is the #1 tool for product managers to plan strategy and roadmaps. We serve more than 700,000 users worldwide. We are looking for:

* Experienced full-stack Rails and security engineers to work on the Aha! product. Our application is built in Ruby on Rails, with React on the frontend for rich client-side experiences.

* Devops engineers with Ruby experience. We focus on the "dev" and all of our operations driven by code.

Aha! is profitable, you can work from anywhere in North or South America, and we offer excellent benefits. We use our own product to manage our work (which is especially rewarding) and we deploy continuously.

Our entire team has always been 100% remote - in North American timezones so we can collaborate during the work day.

Shepherd (Series B) | ONSITE | San Francisco, CA

At Shepherd, we're pursuing the most ambitious technical vision in commercial insurance: fully autonomous underwriting. Shepherd is an AI-native commercial insurance platform transforming how high-hazard industries get covered.

The infrastructure behind the AI boom (data centers, semiconductor fabs, renewable energy assets) has to be built and insured, but traditional carriers weren't built for this speed. We built Shepherd to solve that.

We just announced our $42M Series B last week! That brings our total funding to over $60M — led by Intact Private Capital, the investment arm of one of the largest insurers in the world. Intact is not only our lead investor but also a carrier partner, a testament to the confidence the incumbent industry has in what we're building.

(Hear from our CEO here: https://www.shepherdinsurance.com/blog/behind-our-42m-series...)

(Hear from our CTO here: https://www.shepherdinsurance.com/blog/the-road-to-autonomou...)

This year, we’re doubling our engineering team from 20 to 40. We’re looking for product-minded engineers to join us as we continue to scale! We’re looking for someone who thrives on ownership, drives results, and cares deeply about both technical excellence and customer impact.

We’re hiring various mid-level, senior-level and staff-level engineers. See some of our openings below:

* Full Stack - Job Posting: https://jobs.ashbyhq.com/shepherd/c4081c3d-a79b-4ac9-aa19-78...

* Backend - Job Posting: https://jobs.ashbyhq.com/shepherd/395f4b75-cf05-4581-8408-8f...

* Machine Learning Engineer - Job Posting: https://jobs.ashbyhq.com/shepherd/797316b4-bdcc-4c0c-8bc2-46...

* Applied AI Engineer - Job Posting: https://jobs.ashbyhq.com/shepherd/26959124-aab2-446e-aa4d-72...

* Design Engineer - Job Posting: https://jobs.ashbyhq.com/shepherd/aa254ca8-6721-4770-9a9b-e0...

* Product Design - Job Posting: https://jobs.ashbyhq.com/shepherd/386f87c9-4315-4fc7-aad7-ec...

* Senior Technical Recruiter - Job Posting: https://jobs.ashbyhq.com/shepherd/ccab3e26-4fc8-4bc2-ada3-71...

Our stack includes: Typescript, React, Next.js, GraphQL w/ Apollo, Node.js, Postgres & Redis

Apply here: https://shepherdinsurance.com/careers

* In the form, be sure to mention that you heard about this opportunity via Hacker News.

If you want to read more about our team and culture, check out our blog: https://shepherdinsurance.com/blog

PrairieLearn (Remote US) — Full-Stack Software Engineer — TypeScript / Postgres / React / AI

PrairieLearn (https://www.prairielearn.com) is an open-source assessment platform used by universities across the US (Berkeley, Princeton, Michigan, Illinois, and others). We power mastery-based learning and large-scale exams.

We’re a small, profitable, early-stage company (bootstrapped, no VC) that is growing quickly. Our users love us and we have very high retention and rapid spread through word of mouth. As an early-stage hire, you’ll work across the stack and enjoy meaningful ownership from day one.

Tech we use: Node.js / TypeScript backend, Postgres, AWS, React. We’re also developing AI tooling, including LLM agents to help instructors create content, and vision-language models to help grade student work. PrairieLearn is open core: https://github.com/PrairieLearn/PrairieLearn

Details:

- Location: Remote (US only)

- Salary: $100k-$140k depending on experience

- Benefits: Stock options (0.5% - 1.5%), unlimited PTO, flexible hours

- Role: Full-time. (We’re not able to sponsor visas at this time.)

Apply at https://www.prairielearn.com/jobs-ashby?utm_source=YeEJ5MAKk...