Steel.dev | Founding Engineers (Infrastructure, Applied AI), Growth, GTM | Toronto, San Francisco | In-office

Steel is building open-source browser infrastructure for AI agents & apps. We make it easy for AI engineers to ship products that interact with the web using our Sessions API - An API that controls fleets of browser sessions in the cloud while we handle everything from scaling to antibot and more.

Our tech stack:

- Frontend: Vanilla React + TailwindCSS + Shadcn, built with Vite, deployed on Vercel

- Backend: Fastify, Node.js, Zod, NATs, Drizzle with Redis, PostgreSQL, and S3

- Infrastructure: Pulumi, Go, Firecracker VMs, Docker

- Languages: Mostly Typescript, Rust, Go

With over 6,000 GitHub stars, dozens of paying customers, and millions of sessions served, we grew our platform 50x in 2025 purely through word-of-mouth and our open-source community. Backed by world-class investors, we're building a small, talent-dense team that's shaping the future of how humans & agents interact with the internet.

Current roles (all roles include competitive comp + equity):

- Infrastructure Engineer: Design, optimize, and scale our browser VM infrastructure

- Applied AI Engineer: Build on agent frameworks, integrations, and real-world AI use cases

- Founding Growth Lead: Own the growth machine to turn insane organic traction into a category-defining brand

- Founding GTM Lead: Be our first sales hire, closing deals with AI startups transforming entire industries

To learn more & apply: https://jobs.ashbyhq.com/steel

P.S. If you're feeling spicy, try our optional hiring challenge and submit the flag with your application once you reach the final step → https://challenge.steel.dev

We’re building a local-AI camera OS: SigmaStar cameras → RTSP → HDMI Node → on-device AI → zero cloud.

Think Android for CCTV, not another mobile app.

We need engineers who know: • Linux video pipelines (V4L2, GStreamer, FFmpeg) • RTSP / ONVIF • Edge AI (YOLO, NCNN, TFLite, OpenVINO)

This is founder-level work — small team, big system.

Email: michaeljbrown844@gmail.com

Matcha.fm | Full-stack Software Engineer | High Equity | REMOTE (US/Canada/Europe) Hiring Full-stack Software Engineer

Ship production code fast, own projects end-to-end.

Needs experience in a startup building a product from 0 to scale.

Strong React/Node.js/PostgreSQL required.

Remote US/Canada/Europe

Apply: https://matcha.fm/apply/se

Stack Influence | Multiple Openings: Full Stack Developer, Technical Product Manager, Product Designer & UX Research | Full-time | Remote (Worldwide) We’re a VC-backed, fully-remote, fast-growing creator marketplace connecting eCommerce brands with everyday social media users.

• Senior Full Stack JavaScript Developer ($125-200k USD): Modern tech stack—React, Node.js, Next.js, and Azure. Individual contributor on a small team with no mentoring duties and a 4-day work week.

• Product Designer and UX Researcher($120-180k USD): Hybrid design and research role. 4-day work week

• Technical Product Manager ($150-225k USD): Business-minded ex-engineer with SQL, analytics, and integration skills. 4-day work week

APPLY –> https://stack-influence.breezy.hr/

Wolf Games — Director of Engineering, Creative Automation — Remote (US/Canada) — Contract

Wolf Games is building generative entertainment universes where AI and players collaborate in real time. We’re a Series A creative-tech studio scaling the systems that turn ideas into playable, live experiences.

We’re hiring a hands-on Director of Engineering to lead ~10 engineers building JavaScript-based web games, creative automation tooling, and a hybrid GCP + AWS platform. You’ll own architecture, reliability, CI/CD, and internal tools that connect AI-driven content pipelines to production games.

Stack: TypeScript, Node.js, React/Next.js, GCP/AWS, Kubernetes Looking for: strong technical leadership, web/game systems, automation mindset, AI familiarity Rate: $70–85/hr, contract-to-hire

Apply: https://news.ycombinator.com/item?id=46466074

Avantos.ai | https://avantos.ai | Sr Software Engineer, AI Team | St. Louis or NYC | 150-200k

We're building an AI notetaker and task management tool for financial advisors. Startup is headquartered in NYC. If you're not in NYC, quarterly travel to the office is expected.

Front end: React DB: Postgres APIs: Golang, Elysia/Node Infra: AWS ala Terraform

Interview Process 1. 10-minute async coding challenge 2. Hiring manager chat and 20-minute coding challenge 3. 45-minute Coding Challenge w/ another Engineer from the AI team 4. System Design Interview 5. Chat w/ a Product Manager

Apply here: https://avantos.breezy.hr/p/4a707ef4f952-senior-software-eng...

Matcha.fm | Full-stack Software Engineer | $140K–$290K + Equity | REMOTE (US/Canada)

Hiring multiple Full-stack Software Engineers

We're building AI agent systems that automate complex multi-step workflows.

Ship production code fast, own projects end-to-end.

Looking for 5+ years experience (or <5 with hackathon wins/founder experience/strong GitHub).

Strong TypeScript/React/Node.js required. Stack: TypeScript, React, Node.js, GraphQL, PostgreSQL, AWS (ECS, RDS, Kafka, ES), Docker, Terraform. Full type safety, monorepo, 100% IaC, per-PR staging environments.

Remote US/Canada/EU

Apply: https://matcha.fm/apply/se

Stack Influence | Multiple Openings: Full Stack Developer, Technical Product Manager, Product Designer & UX Research | Full-time | Remote (Worldwide) We’re a VC-backed, fully-remote, fast-growing creator marketplace connecting eCommerce brands with everyday social media users.

• Senior Full Stack JavaScript Developer ($125-200k USD): Modern tech stack—React, Node.js, Next.js, and Azure. Individual contributor on a small team with no mentoring duties and a 4-day work week.

• Product Designer and UX Researcher($120-180k USD): Hybrid design and research role. 4-day work week

• Technical Product Manager ($150-225k USD): Business-minded ex-engineer with SQL, analytics, and integration skills. 4-day work week

APPLY –> https://stack-influence.breezy.hr/

Legion Health (YC S21) | Founding Engineer (AI-Native Ops Infra) | San Francisco | ONSITE | VISA SPONSORSHIP | $130k–$190k + Equity

Legion Health is building the AI-native operations layer for mental health care. We run our own psychiatric practice and use AI agents to handle the complex "backend" of healthcare—scheduling, intake, documentation, billing, and risk detection. We have $3M+ ARR, $7M+ raised, and our infrastructure currently supports 2,000+ patients with only one human support lead.

We're hiring a Founding Engineer to own our backend and agent systems end-to-end. This is not a "wrapper" role; you will be architecting the state machines and event streams that turn clinical intent into reliable operations.

The Role:

Build AI Co-workers: Implement agents with tool use, memory, and safety rails that act as trustworthy teammates for clinicians.

Event-Driven Architecture: Design the schemas and workflows (Node.js/TypeScript/Postgres) that encode how psychiatric care operates.

High Impact: Your work lands in real clinical workflows immediately, directly improving patient access and care quality.

Tech Stack: Node.js, TypeScript, Supabase (Postgres), AWS (ECS/Lambda), Next.js 15, OpenAI/Anthropic.

Offer:

Comp: $130k–$190k base + significant early equity (0.2%–0.8%).

Location: San Francisco (In-person).

Process: Intro -> Systems Deep Dive -> Practical Work Trial (No Leetcode) -> Onsite. We move fast (7-10 days).

Email me at yash@legion.health if you have questions or if you're super cracked and I have to know about you.

Apply here: https://jobs.ashbyhq.com/legionhealth/ffdd2b52-eb21-489e-b12...

alooola | REMOTE (US) | FULL-TIME | AI Product Engineer (React-Native + Node.js) | $100k–$140k

alooola is a wealth management mobile app for medical professionals (investing + retirement + spending), backed by a 30-year advisory firm with ~$1B AUM. Our app is in production and we’re expanding features now that a major custody/infrastructure upgrade is complete.

We’re hiring our second engineer to own features end-to-end across React Native/TypeScript (iOS/Android) and Node.js/Express/Postgres. AI tools (Claude/GPT) are part of the daily workflow, but we care most about strong fundamentals, validation, and UX polish.

Benefits: medical fully covered; 401k match after 1 year; flexible schedule; unlimited PTO

Apply: https://alooola.breezy.hr/p/0764568c8521-ai-product-engineer

Stack Influence | Multiple Openings: Full Stack Developer, Technical Product Manager, Product Designer & UX Research | Full-time | Remote (Worldwide) We’re a VC-backed, fully-remote, fast-growing creator marketplace connecting eCommerce brands with everyday social media users.

• Senior Full Stack JavaScript Developer ($125-200k USD): Modern tech stack—React, Node.js, Next.js, and Azure. Individual contributor on a small team with no mentoring duties and a 4-day work week.

• Product Designer and UX Researcher($120-180k USD): Hybrid design and research role. 4-day work week

• Technical Product Manager ($150-225k USD): Business-minded ex-engineer with SQL, analytics, and integration skills. 4-day work week

APPLY –> https://stack-influence.breezy.hr/

I have adapted our "Stealth" pitch to fit their strict format while keeping the "Nerd Bait" hook. Stealth PropTech Startup | Boston, MA (or Remote) | Founding Full-Stack Engineer | CONTRACT TO HIRE | Competitive Market Rate + Equity We are looking for a "Mad Scientist" engineer to build a living, gamified dashboard that disrupts a massive legacy industry (Consumer Logistics/Real Estate). The Stack: React, Next.js, Supabase, Node.js. (Bonus: Framer Motion/GSAP). The Project: This isn't a CRUD app. It is a "Command Center" that feels like a video game. It features a dynamic "AI Companion" (Nook) that actively coaches users through complex financial and logistical phases. We need someone who can take a "Frankenstein" MVP concept and turn it into a high-performance, secure, living organism. About You: * You treat your IDE like a video game. * You obsess over micro-interactions and "game feel." * You want to be Employee #1 on a product that solves a universal anxiety point for 40k+ users in Boston alone. The Deal: * Mode: Contract-to-hire. We start with the MVP build (paid project). If you survive the mission, you become the Founding Engineer. * Culture: No Jira. No PMs. Just code and shipping. To Apply: Email me at jobroplus@gmail.com Do NOT send a resume. Send ONE link to the coolest/weirdest thing you have ever built. Show me code with a soul.

Stack Influence | Multiple Openings: Full Stack Developer, Technical Product Manager, Product Designer & UX Research | Full-time | Remote (Worldwide)

We’re a VC-backed, fully-remote, fast-growing creator marketplace connecting eCommerce brands with everyday social media users.

• Senior Full Stack JavaScript Developer ($125-200k USD): Modern tech stack—React, Node.js, Next.js, and Azure. Individual contributor on a small team with no mentoring duties and a 4-day work week.

• Product Designer and UX Researcher($120-180k USD): Hybrid design and research role. 4-day work week

• Technical Product Manager ($150-225k USD): Business-minded ex-engineer with SQL, analytics, and integration skills. 4-day work week

APPLY –> https://stack-influence.breezy.hr/

Prove AI | Principal Engineer's and Senior Engineer's | Remote but must be based in the US | Very attractive base salary + equity + benefits

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.

Senior Engineer's - experienced, hands-on engineers who can take end-to-end ownership of complex full-stack systems—spanning TypeScript, React, Node.js, and generative AI integrations—and operate effectively in a fast-moving, early-stage environment.

Principal Engineer's - Lead the technical aspects of the engineering team, mentor engineers, set high standards in architecture and developer-experience, architecture and developer-experience standards, and influence senior leadership across all business functions with clear trade-off narratives and mechanisms that scale.

Candidates must have Full stack experience as well as AI/ML experience

Contact: Richard@proveai.com - you can review and apply for the Senior via this Link - https://proveai.careers.hibob.com/jobs/c2e0ebfc-0922-424b-88... and the Principal via this Link - https://proveai.careers.hibob.com/jobs/43158dce-e153-41f7-b6...

Natera | Staff SWE - EMR Platform | Austin, TX | Remote | $170-190K base + equity + bonus

THE MISSION:

Help providers and patients make life-changing medical decisions with accurate, timely genomic test results. Our EMR team builds the interoperability backbone that connects hundreds of healthcare organizations to Natera's testing platform.

THE CHALLENGE:

• Build next-generation EMR integration platform handling thousands of daily transactions

• Wrangle healthcare standards (HL7, FHIR, CDS) across 100+ organizations with varying implementations

• Create scalable workflows for test ordering, results delivery, and medical record exchange

• Transform legacy healthcare data into modern, structured formats

WHAT YOU'LL BUILD:

• Real-time message processing systems handling patient orders and lab results

• Integration adapters for major EMR systems (Epic, Cerner, etc.)

• APIs and workflows that ensure critical test results reach the right clinicians quickly

TECH STACK:

TypeScript, Node.js, Jest, Cypress, infrastructure-as-code

TEAM:

Small, high-impact team managing full-stack ownership

Healthcare/Epic experience helpful but not required - we'll teach you the domain.

The Electronic Medical Record (EMR) space has interesting technical challenges: creating flexible systems that handle both strict standards and real-world healthcare data chaos, all while maintaining HIPAA compliance and sub-second response times.

Contact: astruthers@natera.com or linkedin.com/in/code-lorde

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

Base Salary of $180k - $210k

Pre-IPO Equity

401k Matching up to 4%

Unlimited PTO

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

Terrabase | Remote | Full-time | https://terrabase.ai/

We’re building long-horizon agentic analytics for real enterprises. Systems that reason over messy data, run multi-step workflows, and produce decisions that can be trusted.

Agents that plan, execute, recover, and explain why an answer is correct.

Senior Software Engineer (TypeScript): Build workflow orchestration systems, schedulers, and execution engines. Own Node.js services + React UIs end-to-end. Reqs: 5–8+ yrs TS/Node/React, event-driven systems, queues, Docker. Bonus: Temporal, n8n, Airflow, Dagster, multi-tenant SaaS.

Senior AI Engineer (Python): Build production LLM agent systems: orchestration, tool use, evals, RAG, safety, observability. Reqs: Strong Python, agent frameworks (LangChain or similar), FastAPI, Docker.

Email me (I am the CTO): jainit@terrabase.ai. Please mention "HN" in the subject and include your GitHub.

[PALTOWN Development Foundation] | Full Stack Developer - HIPAA Project | Remote | Contract $35-50K

Cancer patient support and education nonprofit needs experienced full-stack dev for meaningful 10-12 week contract.

PROJECT: Build secure, mobile-friendly front-end for Airtable database with SSO integration (Hivebrite), (potentially) HIPAA-compliant AWS hosting with BAA, and PDF export functionality.

STACK: Your recommendation (we prefer React/Vue + Node.js/Python, AWS with HIPAA compliance)

REQUIREMENTS: * HIPAA-compliant app development experience * SSO/IdP implementation * AWS with Business Associate Agreement setup * Airtable API integration * Clear communication with non-technical stakeholders

SCALE: Small, includes de-identified patient information, straightforward data interface

WHY IT MATTERS: Help cancer patients find treatment options that could extend their lives.

Details here: https://docs.google.com/document/d/1Z8fWTmDHJndBDH11sz8_707B...

Topliner - Senior Fullstack Developer (Node.js / Laravel / React+TS / AI Integrations) - Remote - $80k/year https://topliner.app

We’re building Topliner, an AI-powered platform for executive search.

What you’ll work on: - Integrations with Loxo, Metaview, GetSales, Calendly - API design, background jobs, and sync pipelines - Auth flows, queue processing, caching - React+TS interfaces

Requirements: - 5+ years fullstack experience - Strong Node.js, Laravel/PHP, React+TS - API integrations, OAuth, async jobs - Understanding of scalable systems and data pipelines - Fluent English

Compensation: - $80k/year - Remote - Part-time → full-time path - Equity potential

Apply here >>> https://topliner.app/careers

Nova Credit | Remote (US, Canada)

We're building a unified platform for credit and financial data to power financial inclusion globally. Our mission is to unlock economic opportunities for consumers historically excluded from traditional credit systems by transforming diverse data into actionable risk insights. We are YC company backed by investors from Canapi Ventures, Kleiner Perkins, General Catalyst, and Index Ventures

-> Hiring software engineers from Mid-Level to Staff

-> Tech stack: Node.js, React, TypeScript, Python, PostgreSQL, AWS

You'll work on enterprise-grade APIs, data integrations, advanced analytics, and seamless user experiences. We're looking for engineers who thrive in fast-paced environments and want to make a meaningful impact on financial inclusion.

Apply at https://job-boards.greenhouse.io/novacredit and mention HN.