Vantheon | Software Engineer | Austin, TX (in person) | Full Time
Vantheon is an applied AI research lab exploring how AI with disrupt investing across economic classes: Vantheon.ai
If you are obsessed with trading, crypto, defi, or something similar, this would be an exciting opp. Node, TypeScript, React
Email: emilie@vantheon.ai if interested
Duolingo | Full-time | Multiple roles | $177K-$300K | NY and Pittsburgh | ONSITE
Our mission is to develop the best education in the world and make it universally accessible. Our culture is eng-driven, friendly, and very data-driven thanks to our large userbase. More info about working as an engineer at Duolingo here: https://www.youtube.com/watch?v=WThT8sufdBE
Tech stack: (frontends) Swift/Kotlin/TypeScript, (backend) Python/Kotlin/Postgres/Dynamo, (infra) AWS/k8s/Terraform.
We're always hiring for engineers. A few roles below:
Senior Engineering Manager, Monetization: https://careers.duolingo.com/jobs/8414653002
Senior Android Engineer: https://careers.duolingo.com/jobs/8217266002
Engineering Manager, Chess: https://careers.duolingo.com/jobs/8385137002
Senior iOS Software Engineer: https://careers.duolingo.com/jobs/8318257002
Base salary: $200K-300K for Senior Eng Manager, $177K-$240K for the others (+equity).
Perks: free lunch, 2-week winter break + 20 days of flexible time off.
Faraday (https://faraday.so/) | Senior Full-Stack Engineer (Backend) | New York City (Chinatown) | ONSITE | $160K–$200K + seed-stage equity
Faraday is automating the back office for the $600B home services industry (HVAC, plumbers, electricians). Contractors are buried in essential paperwork — permits, warranties, rebates — and our AI agents handle these complex workflows so projects stay on track and contractors get paid faster.
We've grown 300% in 9 months and partnered with some of the leading US home service brands. Backed by top-tier VCs, we're a 10-person team operating out of Chinatown, NYC. What you'll do:
Build and scale our AI agent platform and internal tools Ship features end-to-end, working closely with customers Own backend services, APIs, and integrations (ServiceTitan, etc.)
What we're looking for:
5+ years full-stack experience Proficient in TypeScript/JavaScript, cloud platforms (AWS/GCP/Azure) Familiarity with AI/LLMs or eagerness to learn fast Startup experience (founder or early-stage engineer)
Benefits: Medical/dental/vision, flexible PTO, meaningful equity. Apply: https://jobs.gem.com/faraday/am9icG9zdDqmTBDxS17nKvhUlj6NuRr...
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 are launching a cloud SaaS.
We're building in public — open-source core, open roadmap, and transparent about what we're learning along the way. Looking for a senior/founding engineer as first hire. You'll shape the product and architecture alongside the founder (ex-Redis, backed by Open Core Ventures). To apply, email kristiyan@betterdb.com with:
A bit about yourself and why this is interesting to you Run BetterDB with BETTERDB_LICENSE_KEY=your@email.address and paste the first 10 lines of startup logs:
docker pull betterdb/monitor docker run -d \ --name betterdb \ -p 3001:3001 \ -e DB_HOST=your-valkey-host \ -e DB_PORT=6379 \ -e BETTERDB_LICENSE_KEY=your@email.address \ betterdb/monitor:latest
(Yes, this filters out bots. And you get to see what you'd be working on.)
Lift AI | Senior Software Engineer | Remote (US timezones, LatAm/Canada OK) | Full Time | $100K + 0.50–0.75% equity
Lift AI builds software for the elevator industry, where paper inspection reports and faxed maintenance tickets are still normal. Almost no one is building software for this market. We manage ~5,000 properties and have 1,000+ IoT deployments on elevators across the US. The platform handles asset management, maintenance workflows, contract tracking, and an AI pipeline that extracts structured data from elevator industry documents. Django/PostgreSQL backend, React/TypeScript frontend, all on AWS. The CEO's family has been in the elevator industry for 40 years — we're not outsiders guessing at what the market needs.
You'd be our third engineer. The team is me (CTO, I write code daily, Central Time), one engineer who's been here two years and knows the domain well, and our Chief of Product who handles the PM side. No QA team, no DevOps. You own what you build.
First project: we acquired a field maintenance product that currently runs on Firebase/Firestore. You'd design the migration of its backend onto our Django/PostgreSQL stack, including figuring out a replacement for Firestore's offline sync (we're looking at ElectricSQL). You define the API contract, our other engineer builds the frontend against it. Beyond that, we're actively building AI features. One example: an invoice dispute agent that communicates directly with service providers. You'd help architect those.
Stack: Django 5 / DRF, PostgreSQL, Redis, Django Q, React Router v7, TypeScript, MUI, AWS (CDK, ECS Fargate, ElastiCache, RDS), GitHub Actions. AI features use Claude, OpenAI, and LangChain.
We're async but not siloed — Slack, GitHub PRs, and Linear are where most collaboration happens, with the occasional video call. No standups. We follow Shape Up with 4-week cycles. I review architecture proposals for your first ~90 days, then you own your domains. No on-call rotation. We don't do evening releases, and when something rare breaks, everyone pitches in.
$100K base + 0.50–0.75% equity. We have ~5,000 customers and growing revenue, so the equity isn't a lottery ticket. $100K is below big-city market rate and we know that. We're not focused on titles or hierarchy. Growth here means the scope of what you own keeps expanding, and comp grows with it.
5+ years experience. Python (Django, Flask, or FastAPI) and React/TypeScript in production. You've built something from architecture to deployment without someone telling you how. If you've been engineer #2-5 at a startup, or you're a senior engineer tired of process overhead, or you're at an agency and want to go deep on one product, this is that kind of role.
hiring@liftai.com — send something you've built that you're proud of, and tell us why.
Fullstory | Remote (US), Atlanta, London, Bogotá, Czechia | https://www.fullstory.com/
Fullstory provides privacy-preserving session replay and analytics for websites and mobile apps. Our session replays are nothing short of magical - they look almost like a video of the user's screen (with private details redacted) - and the combination with analytics creates eye-opening insights.
Remote (US):
* Senior Software Engineer, Android - $160~170k - Java, Rust, Kotlin, Compose Multiplatform - https://www.fullstory.com/careers/jobs/3be8b5f8-b05c-4221-b9...
* Senior Software Engineer, iOS - $160~170k - Objective-C, Swift, SwiftUI - https://www.fullstory.com/careers/jobs/1c9234a4-af67-428d-91...
Atlanta, USA (1 day per week in office):
* Software Engineer, Digital Experience Analytics - Go, TypeScript, GCP - https://www.fullstory.com/careers/jobs/a786962d-68c1-48fa-8b...
* Software Engineer, Subtext - AI agents, Go, TypeScript - https://www.fullstory.com/careers/jobs/073bfc41-0ac6-4e59-a5...
We have additional engineering and product design roles open in Colombia and Czechia as well as other roles in product management, sales, HR, support, and solutions in the US and UK. See the full list at https://www.fullstory.com/careers?ashby_jid=bce3fcba-6b80-43...
For US roles, you can expect regular raises & bonuses, equity, and benefits including: health insurance, 401k matching (Vanguard), annual learning stipend, unlimited PTO, parental leave, and more. I take about 4-5 weeks vacation a year, in addition to ~3 weeks worth of company holidays (federal holidays + the week of Christmas to New Years.)
Folks in other countries can also expect a strong benefits package, but I'm not as versed on the details.
Additionally, you get a 5-week sabbatical after 5 years of employment - I took mine about a year ago, and it was fantastic.
To apply, please submit your info on the website, and our recruiting team will get in touch with you. If you have questions, feel free to reply here or contact me directly. (I'm an engineer on the iOS team, but I'll do my best to answer questions.)
Flok Health | Engineering (systems/Rust, full-stack/Python/TS, Data) | ONSITE Cambridge UK
Flok builds and runs automated physiotherapy clinics in the UK. Here's an article about us on the BBC: https://www.bbc.co.uk/news/articles/cy4y9xm1eejo
We’re a real clinical service, using a novel DSL, interactive video UI, and other software to scale our patient capacity. We provide treatment for (chronic) back pain, and soon, other common conditions. Flok is both a clinic and a consumer product company, so we can learn fast and perfect the patient experience.
Our core languages: Python, Typescript, Rust.
Read more and apply at https://www.flok.health/careers/engineering-team or find me online and DM me! We're on-site only, in Cambridge.
Modall | Frontend Developer (React/Next.js) | Uxbridge, ON (Greater Toronto) | On-Site | C$60-80k
We're a 5-person dev agency building AI, Web3, and SaaS products for startups, NFL players, and enterprises.
Stack: TypeScript, React, Next.js, Tailwind, React Native | Node.js, Prisma, PostgreSQL
The work: You'll ship pixel-perfect UIs from Figma designs, make architectural decisions, and see your code go into production for real clients. No legacy maintenance, just greenfield builds.
Strictly on-site (Mon-Fri, 9-5:30pm) because we believe in high-bandwidth collaboration. No remote.
Outside of client work, we also incubate internal SaaS products. Team members can contribute to these projects outside regular hours for equity if interested.
Apply: https://modall.breezy.hr/p/552471e37316-frontend-developer-r...
x2A | NYC, NY, USA | ONSITE | https://x2a.tech
We are actively looking for multiple software developers or software engineers to join our team (in the office, 5 days/week). These positions primarily focus on our 5off software product (puzzles/games).
There is zero expectation for you to be proficient in all aspects of the tech stack. We are looking for people who know some of these technologies and are excited to share their expertise while developing their skills and learning new things.
We welcome candidates at any experience level, with or without academic qualifications. For junior candidates, do not hesitate to share related personal projects.
Tech stack:
- Languages: Python, Typescript, Swift, Rust, C++.
- Backend: SQLAlchemy, PostgreSQL, Litestar.
- Frontend: Svelte, Tailwind.
- Mobile: Swift, SwiftUI.
- Cloud: AWS, AWS CDK.
- DevOps: Gitlab.
More https://x2a.tech/careers/openings/ for more details and how to apply.
EnsoData | Mobile Engineer (React Native/Typescript) | Full-time | Hybrid (Madison, WI) or Remote (US)
EnsoData strives to make healthcare more accurate, efficient, and affordable through waveform artificial intelligence (AI) technology. Using AI and machine learning, our software analyzes billions of data points collected from sensors placed throughout the human body.
We are seeking a mobile engineer who is passionate about making healthcare better and has experience building React Native Typescript apps.
Looking for 5+ years full time experience working with a team building React Native Typescript apps for iOS and Android.
Actively hiring - please apply at https://apply.workable.com/ensodata/j/8E07E794DF/ - we would love to hear from you!
Freetrade | London, Budapest (ONSITE) | Full-time | https://freetrade.io | £75k-£140k
Freetrade is a commission-free investing app used by over 1 million people in the UK. Our team is expanding, and we’re seeking software engineers to evolve and scale our core investing platform.
In this role, you will be instrumental in building and maintaining reliable and trustworthy systems for trade execution, clearing and settlement, asset servicing, and internal operational tools.
You will also play a key role in shaping our technical direction and mentoring other engineers as our team grows.
Tech we use: TypeScript, Node.js, Postgres, and GCP
Note: We are three days in the office We don’t sponsor visas at the moment.
We are hiring across the board in engineering, data, people, marketing, risk & compliance and finance.
See all of our opportunities here: https://freetrade.io/careers
Teamtailor | AI Product Developer | REMOTE (EU) or HYBRID (Stockholm/Gothenburg/Linköping, Sweden)
Hi! I'm CJ, Head of Product at Teamtailor (https://teamtailor.com). We're a bootstrapped scale-up based in Stockholm, Sweden but with a global presence. 600 people spread out all over the world. Our Product/Engineering team consists of 60 amazing developers and designers, with an average experience of 14+ years. All working together to build an ATS (Applicant Tracking System) that's loved by candidates and recruiters — with AI at the core.
We launched our first AI-enabled features back in 2023, and having continued to improve and expand them since then. Our users and customers love it.
We're looking for more fullstack developers with experience integrating LLMs and want to help us build the future of AI-enabled, human recruitment.
Stack: Ruby on Rails, Ember.js, TypeScript. Shape Up method.
Learn more and apply: https://career.teamtailor.com/jobs/7046336-ai-product-develo...
Integral | Full-Stack Developer | REMOTE (US)
I'm Stephen, founder of Integral. We're a fractional CTO firm for scaling businesses ($10M-$100M) drowning in SaaS sprawl, broken automations, and data scattered across 20+ tools.
What you'd work on: - Building unified dashboards pulling from Shopify, Stripe, HubSpot, and ad platforms (Meta, TikTok, Google) - Multi-system automations: HubSpot → SamCart → Klaviyo → Circle cancellation cascades - Custom web apps (React/TypeScript, Supabase) when off-the-shelf fails - Debugging/replacing complex Zapier/N8N workflows across client ecosystems - API integrations with whatever the client uses—we've touched trigger.dev, hubspot, asana, samcart, AWS, and many more this month alone
The role: You own your clients. Not "execute tickets"—actually understand their business, propose solutions, join calls (only when needed.) Small team, high autonomy, direct founder access. We're integration specialists, not a body shop.
Stack: TypeScript, React, Python, Node, Supabase/Postgres, REST APIs — end to end. Bonus points if your execution is deeply engineering-driven.
What we're not: Big tech process, Jira hell, or "ticket monkey" work. We move fast on real problems for real businesses. However, that does not mean we aren't highly organized and efficient.
Contractor, ~20-30 hrs/week to start. US timezone overlap required.
stephen@gointegral.co — tell me about a messy integration you've fixed.
Gaia AI | Fullstack Platform Engineer | Robotic Perception Engineer | Full-Time | Boston
Hi, I’m Mel at Gaia AI (https://www.gaia-ai.eco/).
We’re a small GreenTech startup in Boston building hardware and software in the forestry space.
Role: Full stack / platform engineer working on the web app and mobile app. Our stack includes TypeScript, React, Mongo, AWS, and React-native.
Role: Robotic Perception / Computer Vision / Machine Learning engineer working on a sensor-packed backpack for foresters. Our stack includes LiDAR, Vision, SLAM, and Rust.
Preferred Years of Experience: >= 3
Company Size: 7 people
Company Location: Downtown Boston near South Station
For Fullstack apply here: https://docs.google.com/forms/d/e/1FAIpQLSeXplH__tMz_EIRS4yq...
For Perception apply here: https://forms.gle/t7uwLgo5UgadkzrAA
Feel free to reach out to me with questions: mel at gaia-ai.eco
Office Hours | Software Engineer (all levels) | SF, NYC, or Remote (US) | https://officehours.com We connect organizations (AI labs, startups, investors, consulting firms) with experts for paid calls, surveys, and model training. We're profitable and growing quickly.
We’re a small, senior team of product-minded engineers who value quality, simplicity, curiosity, and collaboration.
Some of the problems we're actively working on: - Workflow automation: Designing agent-driven workflows that are driving real impact for the business and our customers - Search: Building semantic + keyword retrieval over large amounts of data - Knowledge graph: Modeling relationships between people, companies, topics, and interactions to power recommendations and discovery - New products: 0-1 work across new interaction types and mediums
Stack: TypeScript, Node, Postgres, OpenSearch, Temporal | React, Next.js, Tailwind | AWS
Open roles:
- Senior/Staff Software Engineer: https://jobs.ashbyhq.com/office-hours/f9e9f476-100b-4d86-b36... - Software Engineer: https://jobs.ashbyhq.com/office-hours/664c0299-27c5-4550-91e... - Senior Product Designer: https://jobs.ashbyhq.com/office-hours/d4ad4cb1-8ccd-49a9-b97...
P.S. If you apply, mention HN. Helps separate signal from noise.
Journalytic | UI Developer (React/TypeScript) | REMOTE (US time zones) | Full-time
Journalytic is an early-stage company building a mission-critical operating system for professional investment teams. We combine behavioral science, structured workflows, and well-crafted software to help hedge funds, family offices, and RIAs make better decisions every day.
We’re a remote team with hubs in Pennsylvania, California, and Seattle. This role is perfect for an engineer who relishes complex technical challenges in a fast-paced startup environment. You’ll be joining a team of passionate A+ players who will support you and challenge you to grow. You won’t be a small cog in a big machine. Your work will have a direct impact on how the world’s best investors operate.
For full details and to apply, visit https://jobs.journalytic.com
Mapistry | Full Stack Engineer | Berkeley, CA US | full-time | ONSITE
We help manufacturing facilities to be compliant with the environmental regulations, reduce their emissions, and become better stewards of the Earth for generations to come.
We are searching for an intermediate/senior full-stack engineer. You will work in a small team of talented developers, and be a part of decision making, starting from the user problems we are trying to solve, all the way through technical implementation, and UX design. Just a slice of technologies we use: Node, TypeScript, Postgres, React, React Native, event-driven architecture with RabbitMQ, analytics with Sigma and Snowflake data warehouse integration.
Mapistry is committed to work-life balance, it has flexible hours and vacation. The work never failed to provide me with plenty of opportunities to grow, and challenges to solve as environmental regulations can get quite complex depending on an industry or specific manufacturing processes. No worries there is a team of domain experts that is a delight to work with!
Wanna join the team, send us your resume at https://jobs.gusto.com/postings/mapistry-full-stack-software...
Duckbill is hiring three-five engineers for 3 roles with hybrid work in downtown SF. We're in-office MWF and WFH Tuesday and Thursdays. Relocation is an option but sponsorship / remote is not.
We're working on Skyway, a new kind of enterprise-grade finops tool born out of the Duckbill Group's consulting business. We're staying small (team-wise) but focusing on the largest of the SaaS spenders and their problems exclusively. We ship daily and have several unfair advantages.
1. Senior Front-end Engineer (TS/JS/React + bit of Python back-end)
2. Senior Back-end Engineer (Python + bit of front-end)
3. Senior Data Engineer (Python, airflow, duckdb, s3, bigquery)
More details are on our careers page (apply through this): https://www.duckbillhq.com/careers/
xAI (Yes, we just got acquired by SpaceX, no, I can't talk about it)
We're the truth-seeking AI (Grok) that accelerates human scientific discovery and deepens our collective grasp of reality.
We're looking for the very best technical talent globally (in-office) - Palo Alto or SF / Seattle / Memphis / NYC / London / Dublin / Tokyo / Dubai / Singapore
292 jobs are currently open - https://job-boards.greenhouse.io/xai
Software Engineers - We're flexible, but think Rust / C++ / Python / Typescript / React
Infra/SRE - k8s / Terraform / ArgoCD / Go
Grok Engineers - machine learning fundamentals, including model evaluation, training and fine-tuning / Python / Typescript
If you're an Engineer and not sure what the best fit is, try applying for one of our 'Exceptional' roles and we'll assess where we think you'll fit: London - https://job-boards.greenhouse.io/xai/jobs/4956070007 Palo Alto - https://job-boards.greenhouse.io/xai/jobs/4956028007
Last step - if you want some assistance, email me at mspiers@x.ai - Include 'hackernews' in subject line and please attach your CV.
Coder | https://coder.com/ | Multiple roles | Multiple locations | Full-time
Coder is an AI software development company leading the future of autonomous coding. We empower teams to build software faster, more securely, and at scale through the collaboration of AI coding agents and human developers. Our mission is to make agentic AI a safe, trusted, and integral part of every software development lifecycle.
Coder’s self-hosted Cloud Development Environment (CDE) is the foundation for deploying agentic AI in the enterprise. It provides a secure, standardized, and governed workspace to deploy autonomous coding agents alongside human developers, accelerating innovation while maintaining control and compliance. Coder's isolated, policy-driven environments improve productivity, cut cloud costs, and reduce data risks. Developers transition to AI at their own pace using their own tools. Platform and security teams can govern, audit, and manage a great developer experience at scale.
We passed 100k stars on GitHub! https://github.com/coder
All positions are fully remote in the countries listed unless otherwise specified.
[1] Software Engineer, AI tools (US/Canada)
[2] Senior Software Engineer, AI Tools/back-end Go (US/Canada)
[3] Senior Software Engineer, AI Solutions/TypeScript (US)
[4] Product Manager (UK/Ireland/Poland)
And more! Apply here + job descriptions, salary bands: https://coder.com/careers?utm_source=O2n5Ew72WD
Not all of our jobs are listed here. Please note that you must submit an application to be considered for any of our positions.