The mission We’re building a best-in-class multi-modal AI agent product (voice + SMS + email) with the potential to disrupt deeply entrenched software businesses and unify a fragmented industry. We’re a tiny team with real traction pre-product, moving fast, and we care obsessively about craft.
Why this role This is a founding engineering seat: you’ll be an early builder shaping the product, architecture, and quality bar from day one. In the first 3–6 months, the role is highly IC-focused. As we scale (including our first in-person hub/site and new hires), this role has optionality (i.e., growing into a leadership role or staying on the IC track and owning the engineering roadmap) for the right person.
What you’ll do
Build real-time systems for voice (streaming audio, low latency, turn-taking), SMS, and email automation with robust state + memory. Design the foundation: architecture, data model, reliability, observability, deployment, and developer velocity. Set the quality bar: clean code, pragmatic abstractions, testing strategy, “don’t break prod,” and thoughtful product UX. Partner closely with the co-founders on product decisions. You’ll have real influence over what we build and how it feels + how it's designed.
What we’re looking for You should be able to work anywhere in the stack (frontend, backend, infra, integrations) and you know how to make smart tradeoffs.
Strong product sense: you’re obsessive about confusing UI and you want to make workflows feel magical. Systems thinking: you can design for latency, reliability, and iteration speed (especially for real-time voice + agent state). High ownership: you run toward ambiguity, unblock yourself, and care deeply about outcomes. Startup mindset: high-risk/high-reward energy, low ego, high pace.
Bonus points:
Experience with agentic systems: LLM orchestration, tool calling, RAG, evals, prompt/versioning, guardrails. Voice/telephony or streaming experience (WebSockets/WebRTC, audio pipelines, turn detection). Messaging + deliverability experience (SMS workflows, email sending, compliance/opt-in, bounce handling). Familiarity with modern stacks (examples): TypeScript/Node, Python, React/Next.js, Postgres, Redis, queues, Docker, AWS/GCP, observability.
What you’ll do
- Build modern, scalable UIs with React, modular CSS, Redux, React Query, and GraphQL - Improve and refactor existing codebases with a focus on simplicity and performance - Partner closely with product, design, and UX to create intuitive customer experiences - Own features end-to-end and ship to large-scale production daily - Share knowledge and contribute to a strong engineering culture
What we’re looking for
2+ years of software development experience. Experience building responsive SPAs with React (or similar frameworks). Solid understanding of JavaScript, React, and Node.js fundamentals. Experience with REST APIs (building or consuming). Curiosity, product sense, and a bias toward shipping
Nice to have
Exposure to GraphQL, Next.js, Nx, or modern frontend tooling
Details
- Location: Sunnyvale, CA (onsite only)
- Visa: No sponsorship available
Email: gaurav.sharma0@walmart.com - please mention HN in your email
Hi HN! We’re an energy + AI startup that applies modern deep learning and optimization to improve the use of renewables and grid-scale batteries to deliver cheap, clean energy to commercial/industrial customers. We also do energy trading and battery optimization.
Roles:
- Data engineer: we're hiring our first data eng! Looking for a startup-minded SWE to work on both ingest and transformation of datasets that power our best-in-class ML models for energy forecasting.
- Product engineer: our energy sales have been growing rapidly and we want to 10x it from here, which involves building a lot of tooling to make sales more automated. This tends to be backend/data heavy, but will also have some frontend (NextJS/React/Typescript).
If you're interested in making a real-world impact on climate/energy, or if you know someone that might, please email me and include a one sentence description of the most impressive thing you've built: kevin@gridmatic.com
Steel is open-source browser infrastructure for AI agents and apps. We make it easy for developers to ship products that interact with the web - without spending 80% of their time on browser pools, proxies, CAPTCHAs, and session state. In 2025 we grew 50x: 6,000+ GitHub stars, dozens of paying customers, millions of sessions served monthly. Dedicated chromium runs on Firecracker VMs for sub-second cold starts.
Stack: TypeScript, React/Next.js, Node.js, AWS, Firecracker, Postgres, Redis. 4+ YOE for both roles.
--- Applied AI Engineer ---
Shape how AI agents interact with the web. Build open-source frameworks/demos on the Sessions API, run experiments on which models/prompts/harnesses actually work, build evals against real scenarios, and work with customers shipping agents to production. AI-native full-stack engineers with strong product sense.
--- Infrastructure Engineer ---
Design and operate the systems Steel runs on. Sample projects: VM snapshotting that restores full browser state in under a second, performance-tuning the Sessions API from kernel traces, orchestrating millions of sessions with sub-second cold starts. Distributed-systems experience, strong AWS/GCP and Linux/OS fundamentals. Rust is a plus.
Public referral bonus: $10,000 if your intro becomes a hire.
Apply: email careers@steel.dev with GitHub & resume, mention HN.
We run a worker wellbeing and compliance platform used by global buyers and their supply chain sites across Asia. We're in the middle of a meaningful migration and platform buildout — you'd be joining at a point where architectural decisions matter and your fingerprints will be on the system for years.
*The work:* Our stack is Django + Python on the backend, dbt for data transformation, React/Next.js on web, and Expo/React Native for mobile. We run on AWS and Azure. Right now we're migrating legacy services while simultaneously shipping new features — so you'll need to be comfortable holding both in your head.
*What we're looking for:*
- Strong Python/Django chops — you've built and maintained production APIs, not just tutorials - Comfortable with React/Next.js; bonus if you've touched Expo or React Native - You understand what a data pipeline actually does (dbt experience a plus, but SQL fluency matters more) - Cloud experience on AWS or Azure — not ops, but enough to not be blocked - You care about code quality without being precious about it
*What this isn't:* This isn't a greenfield startup with infinite runway. It's a real product with real users, real technical debt, and a migration in progress. If that sounds like a problem, this role isn't for you. If that sounds like the most interesting kind of work, let's talk.
*Details:* - Fully remote, India-based - Senior Software Engineer title
Apply: abhishek dot baddi at laborsolutions dot tech | mention HN in the subject
We're a 3-cofounder gym/fitness SaaS , closing a pre-seed. Hiring our first engineer to own: - NestJS/Postgres backend (~70%) - Coral, our WhatsApp AI agent for member retention (~30%)
You'd be our first hire. Real ownership, real equity, no committees. Stack: NestJS, Prisma, Postgres, Next.js, Anthropic API, Meta WhatsApp Cloud API.
Looking for: 3–5 yrs backend, comfortable shipping solo, genuine curiosity about LLMs / retention modelling. ML hobbyist > ML PhD for this role.
Email: Frankie@brightcore.ie ... short note + GitHub or one thing you've shipped.
User interfaces are dead. Knowledge workers will exclusively work through agent interfaces like Claude Code/Cowork. We've built the interface layer to enable that.
One API that unifies hundreds of data providers, workflows, and data infrastructure to agents like Claude Code. We shipped our mvp last month; hundreds of early adopters signed up and are using Deepline.
You'd build core platform: agent-facing abstractions, infrastructure, UI. TypeScript/Python/Next.js/Postgres. $3.3M raised from Lerer Hippeau + Looker founding team. Technical founding team from Uber, Lyft, Capchase, MIT, Waterloo.
I hope you’re doing well.
I’m currently looking for a job and exploring new opportunities.
Full Stack Developer with 7+ years of experience (React.js, Next.js, Node.js, TypeScript, Laravel).
If there are any relevant openings, please consider my profile.
Please suggest where i can apply, not getting any opportunities
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Promptwatch helps companies track and improve their visibility in AI search /ChatGPT, Google AI mode and any other AI app. (GEO).
We handle 1,500/events/second, run millions of prompts a day, analyze them for brand mentions, sentiment, competitive intelligence, and help companies create and optimize content. We have the largest GEO insights platform with billions of prompts, responses, clicks, and mentions.
Work: Own app layer, real-time APIs & queues; ship end-to-end features.
Stack: TypeScript, React 19/Next.js, Node, tRPC, Postgres, GCP, Nice to haves: ClickHouse, Elasticsearch.
You: 8–9 YOE, strong TS/React/Node.
Comp: €90k–€110k + equity.
Apply: https://promptwatch.com/careers/senior-full-stack-developer-... (mention “HN: Full-Stack Developer”).
Hammock is building the first HSA/FSA that actually works for modern life — letting people spend pre-tax dollars on everyday wellness like the gym, recovery, and prevention. Backed by a16z Speedrun, and others.
We're a small team in NYC shipping fast and hiring two engineers. Full JDs: https://www.notion.so/hammock/Hammock-Open-Roles-3499f813ef2...
Backend Engineer — Build the financial and data infrastructure powering Hammock — payments, ledgers, health eligibility, integrations with Plaid, Finch, Lithic. Ideal: strong backend chops in payments/fintech/healthcare, deep understanding of relational/transactional data systems.
Full Stack Engineer — Own product features end-to-end across web and mobile. Ship dashboards, payments UX, and other consumer surfaces. You'll move fluidly between frontend and backend and have real say in how the product works & feels. Ideal: built consumer products before, opinionated about UX, comfortable turning ambiguous ideas into shipped features.
Stack: A lot of Typescript & Postgres, Next.js/Expo/React Native, Railway/Datadog/ PostHog.
Reach out: hiring@usehammock.co - let us know you're coming from HN. We're a small team and will respond quickly!
We are a people-first, boutique tech agency creating on-demand teams and software solutions for long-standing clients, who trust us to practice engineering excellence as though we were members of their own staff. Our leadership team is ex-Fortune 100, with software engineering backgrounds and who are still coding. Notable recent projects include internal tools for Anduril, and the original buildout (both auction site and operations infrastructure) of Voltage Park. This is a remote-first agency, but some projects involve onsite work.
I’m the founder and CEO, and I’m trying to do what I call “enlightened business”. I take responsibility for both staff and clients, and I look for people who approach their work with a similar sense of ownership.
Applicants must meet a high bar - I personally review every hire. In return you’ll get:
* Flexibility and a low-bureaucracy environment * Clients that won’t treat the vendor like “the B Team” * The chance to act as a code architect, not just implement tickets * Exposure to a wide variety of industries and modern challenges * Me as your personal champion and advocate Feel free to submit, even if you already did in the past.We’re currently especially seeking:
Back-end, Front-end, and Full-Stack Software Engineers, Tiers 3 and 4 (Typescript/Javascript, React, NextJS; Ruby on Rails; Python; DevOps, and third-party API integrations)
Our Tier 3 ("mid-tier") roles are typically 5-10 years experience with $150-$180K total annual comp.
Our Tier 4 ("senior") roles are 11-20 years experience, $215-$260K total annual comp.
(Higher tiers exist, and we always welcome exceptional applications.)
Though not yet universal, many of our clients are now demanding senior/staff engineers with success using modern agentic approaches. Be ready to explain where current models work well and where they do not.
Please apply using this Google Form: https://forms.gle/7yv5jhybsGRNDx3o9
AI-powered automotive platform — we're building the infrastructure layer for vehicle data, from VIN decoding to market intelligence.
Looking for: iOS/Mobile, Full-Stack, AI/ML, Data Engineers
Stack: React Native/Expo, Next.js, Hono, Cloudflare Workers, PostgreSQL, TypeScript everywhere
Form is an AI fluency/integration startup for executives & their teams. We build AI applications tailored to how clients work, and need an engineer to do the building.
A typical engagement starts with a client describing a workflow eating their week. You scope alongside them, then build something that makes it disappear. Stack is whatever fits: TypeScript and Python, React or Next.js, Claude and other LLM APIs, integrations with the SaaS our clients use (Notion, Slack, Google Workspace). RAG, agents, prompt engineering, and evals when the work calls for them, not for show.
We're looking for someone who has shipped end-to-end as an early engineer somewhere small, has real opinions about LLM applications, and writes readable code. Comfort scoping with clients and communicating in writing is essential, since most of our work happens that way.
1099 fractional, paid monthly. 10-20 hrs/week, $75-150/hour. 40-hour monthly minimum, scaling with client demand. Potential to convert to a full-time role ($150k-$220k) as the practice grows.
Remote, Austin/US-based. To apply: https://formai.build/jobs or email jobs@formai.build.
We’re building tools for storytellers, worldbuilders, writers, and creators.
We’re looking for a Design Engineer who can design and build polished product experiences end-to-end. You should care deeply about taste, interaction, motion, and frontend craft, but also understand enough about APIs, auth, and data flow to avoid getting blocked.
We’re AI-native, but not trying to replace human creativity. We use tools like Cursor and Claude Code as leverage to move faster while keeping a high quality bar.
Strong fit if you’ve shipped real things, can go from rough idea to polished implementation without waiting for perfect specs, and have built interfaces that feel good, not just functional.
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. For exceptional candidates, visa sponsorship is also a possibility.
We do hybrid, but fully remote is also a possibility within Germany.
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
3. Full Stack Software Engineer - €60.000 - €83.000 EUR - https://grnh.se/qf3dcpf2teu
We’re a small group of senior engineers who help non‑technical AI founders take fragile MVPs to production‑ready systems.
We come in as fractional founding engineers: review code, fix architecture, ship.
Hiring: Senior Consulting Engineers (part‑time/contract)
Looking for engineers who:
- Enjoy advising non‑technical founders
- Are comfortable reviewing AI‑generated code (Next.js, TypeScript, Python, major cloud providers)
- Have shipped production systems end‑to‑end and can explain technical trade‑offs to non‑engineers
- Have actually used AI tools in their own side projects or daily workflow
- Can handle a mix of architecture reviews, roadmap planning, and hands‑on implementation
Details:
- Part‑time/contract to start (typical 5–20 hours/week, flexible)
- Fully remote with meaningful overlap with US daytime
- Work directly with early‑stage AI founders on short, high‑leverage projects
Compensation: market‑rate contracting, typically 100–200/hr depending on experience and scope
Apply: Email humans@intheloop.engineering with “HN – Human” in the subject, and a brief note on your background, availability (hours/week), and the kind of work you enjoy most.
We are applying AI to organize corporate events.
We are looking for a senior engineer with at least ten years of full stack experience, a strong focus on product and UX, and optionally some experience building LLM based products. Currently we are focussed on building tooling that enables us to capture domain knowledge from experts to streamline prompt creation and evaluation. Our tech stack is Typescript, React, Next.js and Tailwind. On the backend we use Drizzle with Neon, deployed and monitored via Vercel. Please note that we are working in the CET timezone. We have pre-seed funding from a major US VC and are experienced founders. You’ll be working alongside the founders (ex-Apple, ex-Airbnb, ex-Tulip, ex-Tourlane) and will have a chance to shape the company, product and of course the engineering culture.
Apply here: https://eventfirst.jobs.personio.com/job/1646275
Junior Software Engineer: You'll work across our stack (Python, FastAPI, Next.js, React) alongside senior engineers, contributing to real features from day one. Great fit if you're hungry to learn, ship fast, and grow with a startup building cutting-edge agentic systems.
New Grad Software Engineer: Entry point for recent grads excited about AI and agentic systems. You'll get hands-on experience with our modern data stack (Postgres, ElasticSearch, ClickHouse, DuckDB), Kubernetes/AWS deployment, and Temporal.io workflow orchestration while shipping production code.
This role is based in our Manhattan office (4 days/week in-person). Full health and dental coverage.
Apply: https://forms.gle/kEi5MDDiaJKdyN3fA or email maksym at withlantern.com with your resume.
Company: We’re building a geologic modelling software, based on reasoning, to help mining and mineral exploration companies work faster. Our goal is to create a way to enable open-ended, interpretive geologic problem solving to be done programmatically, changing the way to explore for hard rock and critical minerals. Currently in active fundraising.
Role: You are the founding engineer on the team, joining co-founder (Neil, CEO) and myself (Jeff, CTO) as first employee. You’ll have a deep influence over systems and architecture. You will have ownership through the entire stack from the database, through geostatistical backend services, through 3D rendering on the client side.
Work rooted in agentic systems, so an understanding of the internals of things like Claude Code, and a broader understanding of orchestrating agents to complete complex discrete tasks is important.
You:
- Fluent in Typescript, Python, and framework/tooling agnostic (Currently using things like NextJS, Supabase, Cesium)
- Eager to learn about mining domain knowledge around the software.
- Ownership of the codebase, and the systems that support the software (project management, CI/CD, monitoring, etc.)
- Open to doing a yearly month abroad with Neil and I. Last year, it was Oaxaca, Mexico.
Apply: Shoot me an email at jeff@deepcoretech.com with a resume, and a short blurb about yourself. If you include a 1 minute video/Loom, I'd love to see it. Must be eligible to work in Canada without a VISA requirement. We are located in Squamish, BC.
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 recently announced our $42M Series B! 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 growing our engineering team from 25 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...
* Founding 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...
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
If you'd like to join us to celebrate our Series B on May 7th, please register here - we'd be happy to meet you! https://luma.com/b73zin1e?tk=W76nCH