Technical founder looking for a commercial co-founder | Europe / US Remote

Senior software engineer with a background in fintech, production ML and distributed systems. Looking for someone to build a company with, ideally in B2B AI, fintech or infrastructure.

Seeking an experienced founder or co-founder with a track record of building successful businesses or achieving an exit, strong in sales, customer discovery and GTM.

I can own engineering and product development. Looking for a partner who’s done it before and wants to do it again.

Let’s talk: hackernews.sculptor491@passinbox.com

Stoke Space | ONSITE in Seattle, WA / Moses Lake, WA / Cape Canaveral, FL | Software Engineer | Full-Time, Internship | Salary: $98k-$289k USD | https://www.stokespace.com

Company: At Stoke, we believe a thriving space economy will enable a vibrant, sustainable, and equitable future here on Earth. That is why we’re building Nova, our fully and rapidly reusable launch vehicle. Designed for daily flight, Nova tackles the core challenges of space transportation by reducing cost, increasing availability, and improving reliability. By radically lowering launch costs and increasing flight cadence, we’re helping create a truly scalable space industry.

Technologies: The team I'm on, Vehicle Software, makes a full in house control stack (firmware, flight computer, autonomy, ground support) in Rust. Data collected from our operations is served by a blazing fast front end written in Typescript, Svelte, and WASM, served by a Rust API. Our launch-day interface is in LabVIEW.

Roles: For full-time, we are currently hiring for a Rust-based controls engineer, a front-end engineer with experience in the stack above, and a strong software engineer with interest in working in both Rust and LabVIEW. We are also hiring software integration engineers in Kent and Moses Lake. On the intern side, we are currently looking for talented interns for our summer and fall 2027 classes (~14 week terms from March to September).

Apply at https://www.stokespace.com/open-roles?department=Software, and feel free to DM me with questions!

Hiya | Senior Backend Software Engineer | Seattle, WA | HYBRID (3 days/week in office) | Full-time | $113K–$197K + equity

Hiya makes phone calls trustworthy again. We do caller ID, spam and scam protection, and branded calling for carriers, phone makers, and businesses.

I run the Communications Platform team (Seattle + Barcelona). We're building new systems where telephony meets AI: real-time scam detection on live calls, deepfake voice detection, speaker verification, and AI call screening that plugs into carrier networks. Most of it is new work, so you'll help make early architecture decisions.

Stack: TypeScript/Node.js, SIP/RTP, STT/TTS, Docker, Kubernetes, AWS, Terraform, Helm.

Looking for 3+ years of backend experience, strong TypeScript or Python, and comfort with APIs and event-driven systems. VoIP/telephony experience is a big plus but not required. I came to telecom from a software background too.

Apply: https://jobs.ashbyhq.com/hiya/2de4d41b-a919-48c4-9a6c-e0d4f3...

Relativity Space | In Office (Long Beach, CA ) | Software Engineer

Company: We build Terran R, a reusable medium-to-heavy-lift two-stage rocket designed for first-stage reusability.

https://www.relativityspace.com

Sr Software Enginner, Full Stack: https://boards.greenhouse.io/relativity/jobs/8633354002?gh_j...

Full Stack SWE II: https://boards.greenhouse.io/relativity/jobs/8834015002?gh_j...

Full Stack SwE I: https://boards.greenhouse.io/relativity/jobs/8834005002?gh_j...

Seeq | https://seeq.com | Staff/Principal Software Engineer (Full-Stack, AI, Backend, Platform) | REMOTE (Some crossover w/ PST required) | Full-time | $170k-$205k + annual cash bonus + equity. Salary range for US-based; local adjustments for other countries.

Seeq creates cutting-edge data analytics software for industrial process data, serving sectors like pharmaceuticals, energy, and manufacturing. Our core product is a robust calculation engine capable of executing advanced math and machine learning algorithms on streaming time-series data. By leveraging generative AI, we enhance usability and accelerate outcomes for our users. We've built up a great remote culture (e.g. annual meetups, home office allowance, generous PTO, a remote office app we created to collaborate) and a dev team that enjoys tackling hard problems that make a difference for our customers (dev blog for more: https://geeq.seeq.com/). Be sure to mention that you came from Hacker News in your application!

Staff/Principal AI Software Engineer (Python, RAG, LLM platforms): https://apply.workable.com/seeq/j/1B6E0A1710/

Staff/Principal Backend Software Engineer (JVM, Postgres): https://apply.workable.com/seeq/j/CD7BA6EE7B/

Senior Full-Stack (React, JVM, Postgres): https://apply.workable.com/seeq/j/763AE68666/

Fig | Founding Engineer | San Francisco | ONSITE (hybrid) | Full-time | $180K-$270K + .5 - 2% equity | https://www.growfig.ai

Fig builds AI agents purpose-fit to food production workflows, focusing on immediate revenue generation and cost saving activities.

We're looking for a founding engineer who truly wants end to end ownership, and considers themselves to be a barrel! (https://www.conordewey.com/blog/barrels-and-ammunition)

If you enjoy hard engineering problems & owning solutions to them end to end, you'd be a great fit!

Email me at bansal@growfig.ai saying why you wanna be a founding engineer! or apply https://jobs.ashbyhq.com/growfig

Ambito (ambito.io) — Founding AI Engineer / Equity Partner — Remote

Ambito is a CRM-connected QBR generator for B2B sales teams. The product is live, with the sales module, template engine, and CRM integrations already built.

We're looking for a founding AI engineer to make the product significantly smarter and broader. This is an equity-only role initially (10+ hrs/week), working directly with the founders and our existing technical partner.

You'll work on:

AI product features: Build a native assistant that can answer questions about customer data, surface trends, provide setup guidance, and help generate QBRs. Retrieval, tool use, structured-data queries, evals, and cost control.

Customer Success: Extend the existing framework into account reviews, renewals, and customer health.

Integrations: Harden and expand CRM/CS integrations (Salesforce, HubSpot, etc.).

Product: Make the overall experience faster, simpler, and more AI-native where it actually helps.

We're looking for someone who has shipped LLM features in production, not just demos, and is comfortable with retrieval, embeddings, tool calling, agent workflows, and evaluation. You should also be able to work across React, TypeScript, and Node (Firebase experience is a plus).

You should think like a product engineer: turn varied customer requests into simple, flexible systems and work independently. Sales tech / RevOps / CS experience is a plus. Boston/MA is a plus.

To apply: Send a short note with something you've built using AI and why this problem interests you. No cover letter. LinkedIn or contact@ambito.io.

Stellar Science | Hybrid (USA) Albuquerque NM, Washington DC (Tysons VA), Dayton OH | Full time, interns/co-ops | U.S. citizenship required | https://www.stellarscience.com

Company: We're a small scientific software development company that develops custom scientific and engineering analysis applications in domains including: space situational awareness (monitoring the locations, health and status of on-orbit satellites), image simulation, high power microwave systems, modeling and simulation, laser systems modeling, AI/ML including physics-informed neural networks (PINN), human body thermoregulation, computer vision and image processing, high performance computing (HPC), computer aided design (CAD), and more. All exciting applications and no CRUD. We emphasize high quality code and lightweight processes that free software engineers to be productive.

Experience: Except for interns, we currently require a Bachelors degree in physics, engineering, math, computer science, or a related field. Masters or PhD is a plus. (Roughly 25% of our staff have PhDs.)

Technologies: Lots of C++23, Qt 6.9, CMake, git, OpenGL, CUDA, Boost, Jenkins. Windows and Linux, msvc/gcc/clang/clangcl. AI/ML and analysis projects use Python and C++. Web projects use Java and Typescript/React. We're a bit behind the curve on developer AI adoption, and we're okay with that.

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

Anthropic | Software Engineer (Staff+ level) | US incl Remote + Canada + Ireland + UK + Switzerland + Japan | Full Time

The work here is super cool but we need more really smart people to make it happen, very high talent density, lots of autonomy, very low ego colleagues and lack of top-down commands (everyone being titled MTS helps!) and working on the frontier.

https://www.anthropic.com/careers

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.

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

Radar Labs | Software Engineers (SRE, ML, backend, full-stack, mobile, security, QA) | Remote (US), NYC | Full Time | https://radar.com

- Radar is the geo-location dev tool

- Doing 1B+ API calls per day

- Our main languages are Rust and TypeScript, we also use mobile and offline pipeline languages (Python, Scala, and Terraform).

- We're based in NYC with our HQ in Union Square and remote friendly (US)

Interesting things we're working on:

- HorizonDB, our Geospatial database written in Rust

- Agents and MCP tools to visualize and debug location data at scale

- Precise indoor location more accurate than iOS and Android leveraging Ultra-Wideband, other mobile sensors and ML.

- Anomaly detection to identify spoofed locations

- Mobile infrastructure that automatically configures itself optimizing battery-life and location accuracy for different use-cases over time

- Multi-Region AWS K8s deployment, 99.99%+ availability

Check out our jobs page here: https://radar.com/jobs#jobs If you have any questions, feel free to reply here or you can e-mail me at tim@radar.com

IRLi | Founding team | Southern California or REMOTE (US) | Profit share + founding equity, no salary

Pre-launch marketplace, web and iOS. Company is formed and self-funded, product is fully designed.

Open seats: Founding CTO, Head of Community Growth, Head of Partnerships, Head of Content and Brand, Head of Trust and Operations.

CTO: you've shipped mobile and web apps with payments, and you believe IRL matters as much as AI.

No salary. Profit share plus founding equity on a four-year vest. Details shared after an NDA.

Email cam@irli.io with a link to something you've built or grown and the seat you want.

SerpApi | https://serpapi.com | Junior to Senior Fullstack Engineer multiple positions | Customer Success Engineer | Hiring Coordinator | Python/Ruby/PHP/Js/Rust/Kotlin/C#/Crystal/Nim/Elixir Developer Advocate positions | Based in Austin, TX but remote-first structure | Full-time | ONSITE or FULLY REMOTE | $150K - 180K a year 1099 for US or local avg + 20% for outside the US

SerpApi is the leading API to scrape and parse search engine results. We provide 100+ APIs to Google, Google Maps, Google Images, Bing, Baidu, and more.

Our current stack is Ruby, Rails, MongoDB, and React.JS. We are looking for more Junior and Senior FullStack Engineers.

We have an awesome work environment: We are a remote first company (before Covid!). We do continuous integration, continuous deployments, code reviews, code pairings, profit sharing, and most of communication is async via GitHub.

We value super strongly transparency, do open books, have a public roadmap, and contribute to the EFF.

Apply at: https://serpapi.com/careers

GiveDirectly | Senior Software Engineer | REMOTE in select countries (listed here https://perfectwiki.page/p/iOeyfUha_9) | $181K base + 15% bonus index

At GiveDirectly, we send cash directly to people living in extreme poverty, no strings attached. It's one of the most rigorously studied ways to address global poverty, with 20+ randomized controlled trials behind it, and we've delivered over $1B to more than 1.5 million people across 15 countries.

Your work will translate directly into money in the hands of people who need it. We're in a phase of tremendous growth (aiming to 5X delivery YoY) and you'll help build the systems for offline data collection in low network rural villages, fraud detection and prevention, KYC, and payments.

Apply here: https://job-boards.greenhouse.io/givedirectly/jobs/455834900...

BCC | Platform Systems Engineers | Bethesda MD | Competitive compensation! | https://www.ncbi.nlm.nih.gov

Black Canyon Consulting (BCC) is hiring Platform Systems Engineers of all levels to join our team at the National Center for Biotechnology Information (NCBI). Our team is dedicated to building cutting-edge tools and systems. Our mission is to empower developers across NCBI to build, deploy, and manage software, data, and web services that make a real difference in the lives of millions of Americans.

Your contributions will play a crucial role in modernizing government technology infrastructure, fostering innovation, and ultimately making a tangible impact on communities across the country and globally. This is your chance to be part of a mission-driven team that’s shaping the future of digital government.

Tech: Linux, k8s, Service Mesh, Kafka, GitLab, ArgoCD, Elastic APM, Python, C++

DevEx Eng: https://job-boards.greenhouse.io/blackcanyonconsulting/jobs/... Sr DevEx Eng: https://job-boards.greenhouse.io/blackcanyonconsulting/jobs/...

Plaform Eng Manager: https://job-boards.greenhouse.io/blackcanyonconsulting/jobs/...

CoVar | Durham, NC and McLean, VA | https://covar.com/ | Full-time | HYBRID (3 days in office per week)

CoVar is a small R&D company specializing in AI/ML and software development for defense and healthcare. Bootstrapped and profitable. We're looking for a jack-of-all-trades who can: prototype computer vision algorithms, build Python web services, wrangle large sets of data from disparate classes of sensors, ... any or all, with the only hard requirement being eagerness to learn.

Visit covar.com for more information on our current openings!

FusionAuth | Principal Software Engineer, Senior Java Engineers, Account Executive, Customer Support Manager | Varies between REMOTE (in USA, also in Europe but only for the account exec position) and ONSITE in Denver, CO, USA, details in each job desc | Salary ranges for the Principal Software Engineer it is 225k-270k, but the Euro positions don't have them :(

At FusionAuth, our mission is to make authentication and authorization simple and secure for every developer building web and mobile applications. We want devs to stop worrying about auth and focus on building something awesome.

There are a lot of companies in the auth space, but we feel like we have something special:

* a relatively unique deployment model (self-host on-prem, run in your cloud or let us operate it for you in ours)

* A well designed API first approach; one customer compared our APIs to petrichor

* a mature product (the code base is nine+ years old and we've found and fixed a lot of the sharp edges around core login use cases; but don't worry, there are plenty more features to add)

* a full featured free-as-in-beer version which makes the sales cycle easier; prospects often come in having prototyped an integration

Our core software is commercial. We open source much of our supporting infrastructure. Technologies and standards that you will work with: modern Java, PostgreSQL, Docker, Kubernetes, MySQL, OAuth, SAML, OIDC.

Learn more, including benefits and salaries, and apply here: https://fusionauth.io/careers/ ( Click/tap the 'View open positions' orange button. )

Datamint | Rust Systems Engineer, Browser Security | Remote (Global) | Full-time | $120k–$170k + Equity | https://datamint.xyz

We build high-throughput crawling and structured data extraction infra designed for AI agents and LLM pipelines.

If you’ve built scrapers recently, you already know the state of the market:

- Traditional proxy providers (Bright Data, Oxylabs, Smartproxy, Proxybase) give you raw IPs or massive unparsed HTML blobs, leaving you to deal with DOM bloat, token waste, and brittle parsing pipelines.

- Modern tools like Firecrawl or Jina made clean Markdown extraction easy for hobby setups, but they often struggle when you throw heavy SPAs, high-concurrency jobs, or hardened anti-bot walls (Cloudflare Under-Attack / Turnstile, Kasada, DataDome) at them.

- Rolling your own Playwright / Puppeteer cluster works until target sites deploy new JA4/TLS fingerprints, and your data team ends up spending 30% of their sprints fixing broken crawlers instead of shipping product.

We're tackling this by combining a low-latency Rust fast-fetch engine (JA4/TLS and HTTP/2 frame emulation) with an isolated stealth browser fleet, zero-code schema validation (JSON Schema/Pydantic), and native Model Context Protocol (MCP) support.

Trade-offs / where we fit: If you just need to curl a few static Wikipedia pages, a 10-line Python script is better and cheaper. But if you need reliable, structured data out of bot-defended sites without babying headless browsers, that's what we do.

We're looking for:

1. Rust Systems Engineer: High-concurrency network I/O, Axum/Tokio, TLS/BoringSSL fingerprinting, proxy routing matrices, and low-latency data pipelines.

2. Browser Security Engineer: Deep familiarity with browser internals (Firefox/Chromium source), canvas/WebGL/audio fingerprint evasion, CDP/WebDriver stealth, and familarity with anti-bot defenses.

Our stack: Rust, Next.js 16/React 19, TypeScript, hardened Firefox/dwx_crawler, Linux/Xvfb, SQLite WAL/Postgres.

If interested, shoot an email to jobs@datamint.xyz (or founders@datamint.xyz) with your GitHub, a project you built or broke, and what you find interesting in this space. No formal cover letter needed.

exe.dev | onsite | SF Bay Area | Full-time designer

Come own and build a brand at a Series A startup.

CABLE | Software Engineer (early team) | Sydney, Australia (ON-SITE) | Full-time | https://jobs.cable.energy/roles/3e2cd174-71f5-80ae-a1d2-db8b...

We're Australia's battery-backed electricity company. We fund, install and operate batteries on-site at small businesses, then supply their power at a firm, flat rate 20–40% below incumbents, making the economics work by optimising those batteries against wholesale prices. We're live with real customers. Team of six, backed by Systemiq and Black Nova; engineering includes Casey, who previously led Google engineering in Paris and Google Maps in Sydney.

We're AI-native: engineers, energy specialists and go-to-market colleagues all ship with coding agents. Each engineer owns a product end to end, from the commercial problem through to production. Flat structure, lots of ownership.

Areas you could own:

* Customer experience: quoting, onboarding and the customer app

* Metering and billing: turning high-volume interval data into accurate bills

* Energy-market and battery data: the market, weather and telemetry pipelines behind our decisions

* The agent-driven development platform the whole team builds on

Stack: TypeScript, React, Postgres, serverless. Intro chat, system design, an agentic build, then a day with the team.

Apply at https://jobs.cable.energy/roles/3e2cd174-71f5-80ae-a1d2-db8b... or email theo@cable.energy.