Top of Mind (https://topofmind.cloud) | AI Software Engineer, Marketing Engineer | REMOTE (EU timezone) | Full-time

We're building relationship intelligence. Not another CRM, not another note-taking app. Top of Mind turns conversations, meetings, and interactions into structured knowledge you can actually act on. A knowledge layer between raw information and real understanding. Small team, shipping fast, AI-augmented everything (we use Claude Code daily).

Hiring two roles, both remote in EU timezone.

AI Software Engineer — React Native, Expo, Claude Code. You'll build the core product. High ownership, small team, no playbook needed.

Marketing Engineer — B2C marketing, content, growth. Technical enough to build, creative enough to tell the story.

https://topofmind.cloud/careers

expand.ai (YC S24) | SF onsite | Full-Stack Engineers We're building infrastructure that makes the web queryable for AI agents. Already in production with major AI labs. Looking for experienced full-stack devs who are comfortable wielding agent swarms to ship fast. Small team, well-funded, high intensity. founders@expand.ai

Horison.ai | Applied Research Engineer + ML/AI Engineer | London, UK (Onsite/Hybrid)

Horison is building the intelligence substrate for private capital - not another RAG wrapper, but a foundational platform for how organisations structure, contextualise, and reason over proprietary information.

We're a funded, early-stage team of second-time founders, with backgrounds across fintech infrastructure, ML, and knowledge representation.

As Applied Research Engineer, you'll own the depth of our knowledge and retrieval infrastructure - ontology design, hybrid retrieval (dense/sparse/structured), information extraction, and knowledge quality systems. You'll translate research into production and shape the technical direction of a core system from day one.

You should have research experience in IR, NLP, or knowledge representation, and you should have shipped something real. Team of six, high ownership, no fluff.

anish [at] horison [dot] ai

Tether - https://tether.io/ - we are hiring for multiple roles 100% remote.

Fullstack Developers

You'll work across the JavaScript and TypeScript layer of our local AI stack. Depending on the project, you might build user-facing applications (mobile or desktop) or contribute to the platform layer that bridges our C++ inference engines with the app ecosystem. Either path puts you at the heart of making local AI usable: whether you're crafting polished product experiences or building the SDK and bindings that other developers rely on. This role suits engineers who thrive in a full-stack JS environment and want to be part of a system where AI runs privately, locally, and fast.

Apply at: https://tether.recruitee.com/o/middleware-engineer-fullstack...

Lead React Native Engineer and React Native Engineers

You will be working on developing cutting edge mobile applications integrating crypto wallets and defi features.

You will also contribute to backend components when needed to support mobile features and unblock mobile delivery.

Apply at: https://tether.recruitee.com/o/lead-software-engineer-mobile...

Product Engineer:

You'll own the vision and execution of local AI products, from roadmap to release. Half your time goes into code, the other half into alignment: defining what to build, why it matters, and how to ship it well. You'll lead a pod of engineers across the stack, ensuring that the power of on-device AI translates into products people actually want to use.

This role is for builders who care deeply about the end result: making local, private, and powerful AI accessible through thoughtfully designed products.

Apply at: https://tether.recruitee.com/o/product-engineer-100-remote-4

VLM Run (https://vlm.run) | 1x Infrastructure Engineer + 2x AI/ML Engineer | Santa Clara, CA (HQ)

VLM Run is building infrastructure for production Vision-Language Model (VLM) systems — fast inference, tool-use + orchestration, reliable structured outputs, and the observability to iterate quickly. We’re a deeply technical team of veteran AI / computer-vision engineers (20+ years combined, MIT/CMU PhDs) who’ve shipped production ML infrastructure across autonomous driving and LLMs.

Open roles:

1. Infrastructure Engineer (Full-time, ONSITE): $150K–$220K + 0.5–3% equity https://app.dover.com/apply/VLM%20Run/8d4fa3b1-5b38-42e1-927...

2. AI/ML Engineer (Full-time, ONSITE): $150K–$220K + 0.5–3% equity https://app.dover.com/apply/VLM%20Run/1a490851-1ea1-4f12-a0f...

Email hiring "at" vlm.run with your GitHub + a couple recent projects.

P.S. We recently launched Orion, our visual agent that can reason and act over images, videos and documents. You can chat with Orion at https://chat.vlm.run and see capabilities at https://docs.vlm.run.

Apply: https://app.dover.com/jobs/vlm-run

Better Stack | https://betterstack.com/ | /^Full-?stack Engineer$/i | Remote (North America & Europe)

We are software builders at :heart: CEO is a software engineer, COO is a software engineer, and you guessed it, CTO is an engineer, too. We are engineers, making the tools we always wanted. If you love building amazing software, you're at the right address.

We are looking for software engineers who, given enough time, could build Better Stack on their own = looking for full-stack product engineer generalists to help us create high-quality software with exceptional UX, end-to-end.

Apply at https://betterstack.com/careers/fullstack-engineer

How we operate: https://betterstack.com/careers – https://betterstack.com/careers/engineering – https://juraj.blog/

Prequel | Software Engineers (backend or full-stack) | NYC (ONSITE) | $170k-$210k | prequel.co

Prequel enables software companies to sync data to their customers' data environments, at massive scale. With the rise of agents, syncing data to customers' data environments is becoming table-stakes for a lot of software companies. We make that incredibly easy for them.

We're a team of four engineers based in NYC. We're cash-flow positive and growing fast. We're solving a number of hard technical problems that come with syncing hundreds of billions of rows of data every day with perfect data integrity: building reliable & scalable infrastructure, making data pipelines manageable without domain expertise, and creating a UX that abstracts out the underlying complexity to let the user share or receive data. We're powering this feature at companies like Stripe (Metronome), Gong, Iterable, and more.

Our stack is primarily Golang/K8s/Postgres/DuckDB/React/Typescript and we support deployments in both our public cloud as well as our customers' clouds. Due to the nature of the product, we work with nearly every data warehouse product and most of the popular RDBMSs.

Apply here: https://www.ycombinator.com/companies/prequel/jobs/VNoKffl-s... or email jobs (at) prequel.co and reference this post.

OmniAI (YC W24) | https://getomni.ai | Full Stack Engineers | SF In-Person | Full Time | $125k–$200k • 0.50%–1.50%

Tech stack: TypeScript | Node | React/Next.js | Postgres | Docker | K8s | LLMs

We’re building the AI-powered infrastructure layer for small-business lending. Banks and fintechs use Omni to automate document collection, financial modeling, public-record research, and ongoing borrower communication.

You’ll work on:

1. Wrangling messy PDFs into usable data (we built a major open-source extraction library: https://github.com/getomni-ai/zerox)

2. Aggregating millions of datapoints from 50+ public sources (UCCs, liens, licenses, tax records) + credit/KYC/AML data

3. Building real-time financial models that combine OCR, LLMs, and rule-based systems into predictable outputs

We’re early, you’ll have a huge impact. Email me (my name at the URL) or apply here: https://www.ycombinator.com/companies/omniai/jobs/Dr0GIaE-fu...

Strobe | Senior Infrastructure & Data Integration Engineer | Brooklyn, NYC | ONSITE | Full-time

Strobe is building the world's largest power plant — not a single site, but a distributed fleet of buildings, batteries, EVs, and generators buying and selling power in real time across wholesale energy markets.

We need a software engineer to take ownership of our data integration and cloud infrastructure layer — the connective tissue between utilities, grid operators, OEM hardware, weather services, and our energy optimization engine.

What you'd own:

- Wholesale market integrations (NYISO, CAISO, ERCOT) — real-time pricing, capacity markets, demand response signals - OEM hardware integrations — API and data bridges to building equipment manufacturers for monitoring, control, and telemetry - Green Button Connect pipelines — ingesting interval consumption, billing, and meter data from utilities (ConEd, PG&E, SCE, etc.) via OAuth2 + ESPI - Weather and solar forecast data pipelines - Utility bill reproduction engine — modeling site economics before and after Strobe to forecast financial impact across dozens of rate structures. This simulation infrastructure is core to how we sell and deliver value. - Event-driven AWS infrastructure (Lambda, API Gateway, AppSync/GraphQL, EventBridge, IoT Core, TimeStream, Amplify, CloudWatch) - Terraform IaC — real module design, remote state, multi-workspace patterns - Observability and alerting on systems where downtime means missed market events and real dollars

Strong fit if you have:

- Deep AWS experience (IAM, Lambda, API Gateway, AppSync, EventBridge, TimeStream or similar TSDB) - Production Terraform (modules, remote state, multi-workspace patterns) - Extensive Python (pydantic for models, click for CLIs, boto3 for AWS, async pipelines) - Experience integrating messy third-party APIs at scale (utilities, government, energy, OEMs) - Comfort with on-call for systems that control physical hardware and move real money

Stack: monorepo (heavily AI-agent-optimized) / Python / TypeScript / Rust / Terraform / AWS.

Small team (<10), high ownership, no layers. 5 days/week onsite at Newlab, Brooklyn Navy Yard.

eric@strobepower.com (mention HN) — LinkedIn or resume (PDF preferred).

Youth Inc. | Staff Engineer / Technical Lead | Hybrid Boston, Hybrid Chicago or Fully Remote (US) for exceptional candidate

Youth Inc. is a venture-backed e-commerce marketplace focused exclusively on youth and high school sports.

- Backend: Elixir / Phoenix - Data: PostgreSQL - Infrastructure: Linux, Docker, CI/CD

What you'll do

- Primary technical authority for the engineering team - Own architectural decisions, tradeoffs, and long-term technical direction - Lead design discussions and write clear design docs - Guide the evolution of data models, APIs, and system boundaries - Design, build, and maintain Elixir/Phoenix services in production

What We’re Looking For

- 7+ years of professional software engineering experience - Strong backend experience with Elixir (or deep experience in another functional or concurrent language with willingness to go deep in Elixir) - Outstanding communications skills

To apply, please send your resume to jbutler@youth.inc.

Elsewhere | TypeScript Game Developer | San Francisco

Ever wanted to build indie video games at a startup? Let's talk. Elsewhere is a San Francisco-based company building a new kind of multiplayer social video game, inspired by indie roguelike deckbuilding games like Slay the Spire and CCGs like Magic: The Gathering. We're using generative AI in a creatively interesting way to build the first AI game that doesn't suck. We're backed by top Silicon Valley investors, and graduated from the first cohort of a16z's SPEEDRUN program, which is kind of like YC for games.

Ideally, you:

* Have worked as a software engineer before, ideally on a small team.

* Have built and shipped games before, either professionally or on your own time.

* Have experience with full-stack web development, using TypeScript, React, etc.

* Love games yourself, and have always wanted to work in the games industry.

If you're interested, reach out to info@elsewhere.zone or apply here: https://app.dover.com/apply/Elsewhere/4cec0e86-d654-46a7-bb7...

Ardent AI | Product Engineer | REMOTE (US) | Full time | $180-200K, 0.5-1.0% equity

Ardent [0] is a well-funded, early-stage startup founded by an ex-Stripe engineer and three-time founder. We're building a platform which helps users blend the creativity of generative AI with the determinism of executable code.

We've raised ~$2.5M to date, and we're hiring another engineer to join the team. We're looking for highly motivated and talented candidates with experience working on a fully remote team, a strong interest in artificial intelligence, and alignment with our principles and way of working. [1]

Our interview process is efficient, and we don't do Leetcode or grueling all-day interview loops. We won't waste your time, we will stay in constant contact throughout, and we will get you an answer quickly.

If this sounds like something you might be interested in, read more about the job and how to apply here: https://ardent.ai/careers/product-engineer

Please note — You must be be a resident of, and eligible to work in, the United States. We are not currently sponsoring visas. This is a full-time, direct-hire position, and we are not interested in working with agencies or consultancies.

[0]: https://ardent.ai

[1]: https://ardent.ai/company

Modal | Software Engineers (Product, System, SDK) | SF, NYC (ONSITE) | Full Time | modal.com

Modal builds the serverless cloud used by many of the most popular AI companies you've heard of. People use Modal for inference, training, batch operations and also, sandboxes. A good example is the Ramp Inspect tool, that was built on Modal sandboxes. https://engineering.ramp.com/post/why-we-built-our-backgroun...

I am one of the hiring managers here, hiring for the Product Engineering team that builds the observability tooling for our developers. Modal is the cloud for many of our customers and we help them reason about what's happening in their systems, help them expand their use and generally have a good experience.

If you are interested in a product engineering role, please feel free to reach out directly via email at can@modal.com with a recent resume. This role is NYC based and is on-site, so please mention your current location also. I am especially looking for folks with deep ClickHouse, Postgres, Redis, and Python experience.

Product Engineering Role: https://jobs.ashbyhq.com/modal/a4b8b2b6-5d0c-4ba6-9256-b84be...

For all other roles, please apply from our website.

All roles: https://modal.jobs

Coast | Platform Engineer (Security), DevSecOps Engineer | Hybrid | NYC | $160,000 - $180,000

Coast is re-imagining the trillion-dollar U.S. B2B card payments infrastructure, with a focus on the country’s 500,000 commercial fleets, 40 million commercial vehicles, and many million commercial drivers. Coast's mission is to deliver modern digital experiences, affordable and transparent financial services products at a transformational scale, and to improve working lives in one of the country’s biggest industry sectors.

Coast is competing and winning with software, and we are building a world-class engineering team. We are looking for a Platform Engineer (Security) / DevSecOps Engineer - first of it's kind at Coast, with high ownership, impact, visibility.

If interested, apply here: https://job-boards.greenhouse.io/coast/jobs/5544756004

SpruceID (YC W21) | REMOTE (US-Based Preferred) | Full-Time | spruceid.com

Spruce lets users control their data across the web. Instead of users logging into platforms, we believe platforms should request to access data vaults controlled by users.

The demand for trusted digital ID is accelerating as AI deepfakes begin to destroy most of the ways we use to verify identity today. How private or secure is it to hold your driver's license or passport up to a webcam to get a bank account? Was it ever private or secure? Stable diffusion can break so much of this already. Society will need trusted digital IDs and credentials. Our mission is to allow them to be controlled by individuals, with safeguards to prevent descents into surveillance states and checkpoint societies.

We are the main implementers of category-defining initiatives such as the digital ID program for the California DMV, and the verifiable digital credentials program in Utah. We are private sector participants in NIST's National Cyber Security of Excellence initiative for privacy-preserving digital ID.

We are hiring skilled engineers who care about making a real impact in improving public services, digital autonomy, and user privacy for the world. We work closely with public sector agencies, and have high regard for public servants. We have a strong engineering and customer-oriented culture, and are not simply a SaaS product or AI wrapper. Our roles are not for the faint of heart: you will be expected to work hard and learn a lot in this role.

Our engineers are ambitious to get outcomes for our customers and their constituents. On any given day, they may write great Rust/C#/TypeScript, deal with mainframe dumps, read policy documents, respond to technical RFIs/RFPs, manage on-prem environments, implement new NFC + Bluetooth protocols in Swift/Kotlin, create CI/CD processes that enforce W3C accessibility guidelines and i18n requirements, rewrite lost specs from disassembled binaries, figure out stablecoin payments, and design new protections for public key infrastructure. It is a team effort, and people with T-shirt shaped skills are able to collaborate and learn a ton from each other every day.

We are interested in candidates who want to be proud of the meaningful impact they make for society, even if it takes time to get right. This is not the right job for someone who wants to "join a cool new AI startup" that implodes or exits in under a year.

See our roles here: https://jobs.lever.co/sprucesystems/

Apex Dental Partners | Full-Stack Developer | Dallas, TX (Remote US or Hybrid) | 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 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

Hey HN, this is Louis, co-founder at SightlineOS.

Yusha, Derrick, and I are building an AI-native supply chain operating system for restaurant chains. It’s a massive, overlooked space with deeply underutilized data, and we’re using modern data and ML systems to automate planning, inventory management, and spend optimization. We’re venture-backed, NYC-based, and are hiring our first senior engineers as we start to scale. These are high-ownership roles with real production impact from day one.

You’d work closely with founders, own core systems end to end, and help shape the technical foundation of the company. You’ll own and scale the data foundations that power our ML and customer insights along with client implementation.

Location: NYC (hybrid, 3 days/week in office) Salary: $135,000 - $185,000 + equity

Apply here: https://www.sightlineos.com/sr-data-engineer

A24 Films (Labs Division) | Two Openings | Full time | Onsite/Hybrid (NYC)

We do movies, ping pong blimps, etc

Senior DevOps Engineer/SRE/Platform Engineer: https://labs.a24films.com/jobs/devops

UI/UX Developer Styling Genius: https://labs.a24films.com/jobs/genius

If you email me, mention hn ;)

ClickHouse | Senior Cloud Software Engineer - Distributed Systems / Cloud Databases / Kubernetes | Remote Hiring in the US right now. Seniors/Staff/Principal levels.

ClickHouse is a popular, Open-Source OLAP Database. We are ClickHouse Inc, the company behind the database aiming to build the best in class real time data warehouse.

What we are looking for:

Distributed Systems / Cloud Engineers to build the AutoScaling Systems for a Cloud Database.

We also maintain our own ClickHouse-based Data Infrastructure. Bonus points if you've worked on auto-scaling or other data-driven forecasting challenges in the past.

    Can work in an early stage startup environment. Proactive and hands on.

    You must be independent and self-organized.

    Good at Go, Kubernetes (Understanding how to manage stateful services in a multi-cloud environment) and Distributed Systems in general.

    SQL / ClickHouse SQL (goes without saying)

    You'll need to be able to do On-Call - debugging production infra or db issues

    If you can do low-level database programming (C++, ClickHouse) that's added bonus.

PS: If you're a pure DevOps person or a pure Data Engineer who wrangles data tools, please read the above requirements carefully before firing off an email. This role is an intersection of a lot of sub-roles, not a particular specialization

Decisionly | Senior Software Engineer (Backend) | Full Time | Remote (US based)

Decisionly is building AI-powered dispute decisioning for card issuers, eliminating cost and enabling compliant, scalable card operations. Decisionly automates complex manual workflows end-to-end, modernizing payment infrastructure and generating unique first-party fraud insights for fintechs, processors and banks.

Our founding team has a strong track record and unique founder-market fit. We founded Chargehound (backed by Y Combinator, Khosla), the first automated dispute solution for merchants like Airbnb, Uber and Doordash. PayPal acquired Chargehound in 2021. We've worked together since 2016.

We're looking for someone who is excited about the idea of working with a small team to solve a real pain point for credit card issuers. You'll need to have the ability to think from both a technical and product perspective to help translate a complex business process into a scalable, automated system.

Details & Apply: https://app.dover.com/apply/Decisionly/a99ccbfa-d936-4992-88...