Opaxa | Founding Engineer, Forward Deployed (full-stack) | San Francisco Bay Area preferred, REMOTE (US) considered | Full-time | $175K–$225K + 0.5%–1.5% equity | opaxa.com

Every business with many locations already has systems that record what happened yesterday. None of them tell the manager what to do today. Opaxa does. It reads the systems a business already runs, learns how that operation actually works, and puts the right decision in front of the right manager: how busy tomorrow will be, who to schedule, what to order, which invoice overcharged you. Then it tracks what each decision earned.

Our founder runs a restaurant company with more than 40 locations and over 750 employees. Opaxa was built inside it to solve its own problems, and it runs there every night. We're well funded and now expanding to other multi-location operators: restaurant groups, stadiums and campuses, hotels, retail.

You'd be the second engineer, working with our founding engineer, who owns the architecture, and with the sales and product team. You'd take new features from spec to production, spend real time with the managers who use them, and turn what they tell you into shipped changes within days. As we bring on new clients, you'd lead getting them live. TypeScript/React, Python, Postgres, AWS, and AI tools every day.

This is an early, high-intensity role for someone who wants a lot of ownership and to move fast. US work authorization required. No agencies or contract firms.

To apply, email colton@opaxa.com with the subject "Forward Deployed: your name, your city" and include: your resume or LinkedIn; a link to something you built that real people use, and what you personally did on it; two or three sentences on a time a user's feedback changed what you shipped; and where you're based. We read every email.

Footprint | Rust Engineers (Backend, Infrastructure, Security) | New York, San Francisco | ONSITE | VISA (case by case) | $180K-$260K + equity

We build Percy, an agent that runs financial-crimes investigations for banks and fintechs. It clears false positives, escalates real risk, and writes the case narrative and audit record a regulator will read. Under it sits four years of identity infrastructure: verification, an AWS Nitro Enclave-backed vault for PII, and the APIs our customers call directly. The backend is Rust.

We're hiring three Members of Technical Staff:

- Backend: the Rust APIs and services behind verification, vaulting, and the checks Percy runs. Production Rust is ideal; deep systems experience plus a real wish to learn it also works. Crypto or systems-security background counts for a lot.

- Infrastructure: own agent compute, isolation, deploys and observability across Rust services and long-running agents. Rust, Postgres/Aurora, AWS (ECS/Fargate), Pulumi/Terraform, Datadog, OpenTelemetry.

- Security: protect identity data we vault on behalf of regulated banks and fintechs, and prove to auditors every step was done right.

Small, senior team. Backed by QED, Index and BoxGroup. Customers include FDIC- and OCC-regulated banks plus Bilt, Nuvei and MoonPay.

Apply: https://jobs.ashbyhq.com/footprint. I'm the recruiter and will answer questions in this thread.

Ripple | Senior Fullstack Engineer | Ruby/React/Postgres/AWS | Based in Dublin, Ireland/ London, UK | Full-time | Hybrid Building out an existing Treasury Management system that manages $100B+ in daily global cash flow. Financial background not required, as we will teach you on job. https://treasury.ripple.com/

Want to learn more, DM me.

Tivly | Principal Software Engineer (Java) | | [REMOTE (US) only currently residing in: Alabama, Florida, Georgia, Michigan, Mississippi, Missouri, North Carolina, Oklahoma, Tennessee, Texas, or Virginia.] | Full-time | [$170k–$190k + bonus]

Tivly helps small business owners find the right insurance coverage quickly by connecting them with carriers and agents through our marketplace platform.

We're hiring a hands-on Principal Engineer to own architecture across our Java platform: setting technical direction, leading cross-team design, and mentoring senior engineers while still writing code.

Stack: Java 17+, Spring Boot, microservices, AWS, Kafka, PostgreSQL

Looking for: 10+ years building and scaling distributed systems in production, and experience leading technical direction across multiple teams.

Apply: tivly.com/careers

ML6 | Senior AI Engineer | Python, TensorFlow, PyTorch, GCP, AWS, Azure | Full-time | Amsterdam, Berlin, Munich, Eindhoven, Ghent (EU) On-site/hybrid

We are an AI engineering company that builds end-to-end AI solutions. By applying the latest AI research, we keep our clients at the forefront of innovation. If you are interested check out:

https://www.ml6.eu/en/customers/cases/

Work on innovative projects for the biggest clients across Europe such as Randstad, ASML, FUNKE, and many more! Whether it’s about leveraging LLMs to improve customer support, building data lakes on cloud platforms to improve storage or implementing models using sensor data for quality control. You can find it all at ML6. You will mostly work with Python and a range of ML frameworks such as TensorFlow, PyTorch, or HuggingFace Transformers and help bring application into production by building data pipelines and cloud infrastructure on all of the major cloud providers (GCP, AWS, Azure).

Open roles include:

• Senior AI Engineer

• Senior Software Engineer

• Medior AI Engineer

• Squad Lead GenAI

and many more!

Apply now at https://jobs.ml6.eu/

Rebar | Software Engineers (Product, Applied AI, ML Infra, Data Platform) | ONSITE 5 days/week, New York City (union square area!) | Full-time | $150k–$260k + equity | https://jobs.ashbyhq.com/rebar

We build AI estimating software for commercial HVAC, plumbing, and electrical contractors. Before bidding on a job, a contractor or estimator has to count every duct, fitting, diffuser, and piece of equipment across a set of construction drawings that can run to thousands of pages. We speed this up by ingesting the drawings, detecting the equipment schedules, finding symbols, and producing a priced takeoff that the estimator reviews and corrects in a collaborative canvas editor. We have strong PMF and raised a $14M Series A earlier this year.

It may not sound sexy, but it actually is!! There are a ton of hard and interesting engineering challenges. Just to highlight a few:

* very dense document drawings with a realtime collaborative canvas editor (think 50k DOM elements and up) * segmentation models (and many more) whose output has to become geometry a user can interact with * gpu inference across hundreds of concurrent jobs * dynamic analytics and chart generation from agentic workflows custom built for estimators

Open roles:

* Software Engineer, Product ($180k–$240k): https://jobs.ashbyhq.com/rebar/5ab49c2d-9a70-4723-9217-7704a... * Software Engineer, Applied AI ($150k–$250k): https://jobs.ashbyhq.com/rebar/ad41a627-d9a4-49a4-a1b4-f7202... * Software Engineer, ML Infrastructure ($200k–$260k): https://jobs.ashbyhq.com/rebar/ead8df0c-b6da-4e79-90d0-99651... * Software Engineer, Data Platform ($170k–$220k): https://jobs.ashbyhq.com/rebar/c227ea05-98f8-4a08-9760-f7e3c...

Stack: TypeScript/React/Next.js, Python, PyTorch, Postgres, Temporal, AWS, Kubernetes, Modal.

We're also hiring for PMs, implementation, sales, and marketing roles! I'm the Head of Engineering. Apply through Ashby and mention HackerNews or HN in the Ashby form. Or email me at john@withrebar.ai. We will reply to everyone, but it might take us some time! Thank you in advance for your patience

Additionally, there's a fun puzzle on our marketing site that will fast track your application if you want to solve!

Tahoma AI | tahoma.io | Austin, TX or Seattle, WA (ONSITE optional) | REMOTE (US) | Full-time | Founding Engineer

Tahoma builds AI agents that automate healthcare Revenue Cycle Management (RCM): eligibility, claim status, claim submission, denials, and payment posting. We're live in production with paying enterprise customers.

Our agents operate payer portals behind MFA, green-screen terminals over SSH, and Windows desktop software, where some actions are irreversible. They run on a deterministic orchestration layer we built in-house, with model calls as bounded steps, not the control loop.

Stack: TypeScript/Node.js, Playwright, computer-use agents, Claude, Postgres, Azure, K8s.

You'll get to own the core platform end to end and make the real architecture calls: resilience to portal changes, exactly-once guarantees, observability, and cost per run.

Team: Founder from AWS, the former UnitedHealthcare CIO, advisors from Microsoft Research and Shopify's AI team, and a remote engineering team in-flight.

Please write us at careers@tahoma.io with your resume and one thing you've shipped. You can see more at https://www.tahoma.io/careers

Thanks!

AI x Healthcare Startup | bracehealth.com | Boston, MA Onsite | Full-time | Early Engineer

We're looking for a backend-leaning fullstack dev. You will be one of the first engineers outside of the founding team. Here is a bit more about us: We're a seed stage AI startup backed by top tier investors. We're on a mission to ensure every patient gets covered for the care they need and every doctor gets paid for the work they do.

We’re building deep, vertically integrated technology systems to solve fundamental problems in US healthcare - the biggest market in the world ($5T). We use AWS, K8s, React, and Rust but there is no requirement to have prior experience with them specifically. We'll teach you!

We are a founding team made up of ex-YC, Amazon, Meta, Microsoft, and Harvard Business School with previous successful exits.

You’ll own entire product areas and be expected to play a true full-stack role, with the ability to go from customer need to end-state product. You’ll work directly with the CTO at the edge of what's possible with LLMs and agentic systems applied to a hard domain. You'll contribute to technical strategy, make real architectural decisions, and write vast amounts of production code with AI first developer workflows. Most importantly, the technology you build will have real impact on real people - clinics staying open, clinicians getting paid, patients getting care.

This is an opportunity to work in a fast paced, high ownership environment while solving real problems in healthcare.

We're happy to share more details on the role in person/on zoom. Please fill out this form if interested!

https://wgwx7h7be0p.typeform.com/to/LV0t8OjI

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...

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

Veo Technologies | Senior Software Engineer (Rust, Python, C, Embedded Linux) | Copenhagen, Denmark | ONSITE | Full-time

Veo makes an AI sports camera. One camera on any pitch records the match from several sensors, stitches them into one continuous view, and our models track every player and the ball for the whole game. Coaches and players get stats like goals, possession and passes.

You will build Rust and Python user-space apps on our embedded Linux camera, and help shape the firmware architecture and Linux platform. You won't be writing drivers or doing low-level hardware work. Day to day that means Yocto system services, D-Bus and device trees, BLE/Wi-Fi with GATT and Protobuf protocols to our mobile apps, cloud integrations (REST, S3, OpenTelemetry), and diagnostics across a fleet of devices. You will work closely with our AI, video and cloud teams.

Stack: Rust, Python, C, Yocto/OpenEmbedded (meta-tegra), Zephyr, NixOS, GitHub Actions, AWS S3, OpenTelemetry, Grafana, Loggly.

Looking for: 5+ years of experience, fluency in at least two of Rust/Python/C, and experience with embedded Linux (Yocto) and BLE/Wi-Fi. MCU/RTOS experience is a plus.

Our Copenhagen office has an indoor ball court, a rooftop terrace and a gym.

Apply: https://nordictechjobs.com/jobs/wQWZw34HNY

Trackerbot | Full-Stack Developer (Node.js) | REMOTE | €35-45k/year

Trackerbot.me is a profitable SaaS product used by thousands of eCommerce sellers to automate order tracking and fulfillment across marketplaces such as eBay and Amazon.

We're a small engineering team of 3 (including me, the CTO/co-owner), so this is a hands-on role with a lot of ownership. You'll work directly on the product and take features from idea to production.

Our stack is primarily Node.js / JavaScript, PostgreSQL, Heroku, AWS/S3, and Chrome Extensions.

We're looking for someone with strong Node.js and PostgreSQL experience who is comfortable working independently on a production SaaS product. Experience with Heroku and especially Chrome extension development is a big plus.

The position is fully remote. We're based in Sofia, Bulgaria, and also have an office here if you're local and want to work in person occasionally.

Interview process: short intro call → small take-home assignment → discussion of your solution → offer.

No LeetCode and no six-round interview process.

Apply: email me at dobrev.d10@gmail.com with your LinkedIn, GitHub, CV, or whatever best demonstrates your experience.

Enveritas (YC S18, non-profit) | Backend Software Engineer | Remote (Global) | https://enveritas.org/jobs/ Enveritas is a 501(c)(3) nonprofit working on sustainability issues facing smallholder coffee farmers. We collect field data in 30+ countries and build systems for analyzing risks in coffee, cocoa, and tea supply chains (including EUDR-related deforestation checks).

* Backend Software Engineer (Python, PostgreSQL/PostGIS, Docker, AWS, Terraform) - $135-$155k -https://enveritas.org/jobs/backend-software-eng/#10d7adef8us (worldwide remote)

VOYGR (YC W26) | Founding Product Engineer | San Francisco | ONSITE | Full-time | $150K-$200K + 0.5%-2.0% equity

I'm Yarik, cofounder and CTO. Before this I spent 20 years in tech with 10+ years running infra, ML and search teams at Google, Meta and Apple.

We love maps and build location/businesses APIs for AI apps and agents. If ChatGPT tells you a restaurant is open and it actually closed in March, that's the problem we fix. We check whether a business still exists, whether its hours and details are right, and enrich it with what's being written about it on the web (news, articles, events). Customers get all of it through one API and we solve it for them with our models which use all available sources and ai voice agents which can confirm the information.

You'd be one of the first engineers. Some weeks that's search and ranking, some weeks it's data pipelines or evals, some weeks it's the API or something a customer asked for yesterday. You'll have a big say in what gets built, not just how.

Stack: Python, FastAPI, Postgres/PostGIS, DynamoDB, Redis, AWS (EKS), our own ML models plus LLM APIs (OpenAI, Gemini, Anthropic).

What I'm looking for: - 2+ years shipping production systems, or fewer if your background is unusual and you can show what you've built - real experience with at least one of: search/IR, large-scale data processing, ML systems, API design - you already use Claude Code, Cursor or similar as part of how you work - geo/POI data experience is a plus, not required

Fair warning: we are a small team, fast pace, and there could be nights and weekends. If that's not where you are in life right now, totally fine, this just isn't a good fit.

Process: a short note on why you, a 30 min call with me and then Vlad, a technical deep dive, then a paid trial project.

Apply here: https://www.workatastartup.com/jobs/93490 or email me directly at yarik@voygr.tech

Curai | Remote (US) | Full-time | https://curaihealth.com

We're building AI agents to expand access to affordable, and high quality healthcare. We run a vertically integrated primary and urgent care clinic and are actively building an agentic platform focused improving longitudinal care outcomes.

We're hiring engineers to work across patient and clinician experiences, production AI systems, and the platforms that help people discover and access care.

* Sr Software Engineer, Full-Stack: https://jobs.lever.co/curai/46e0dd2f-c1dd-4ca2-9095-5b45f477...

* Sr Software Engineer, Agentic AI: https://jobs.lever.co/curai/cd31b67b-d83c-466a-ac55-cfa4c2ec...

* Sr Software Engineer, Marketing Platform: https://jobs.lever.co/curai/b157298e-4dc7-4594-a9c4-29f0dec4...

Tech stack: Agents SDK, Braintrust, Python, React, React Native/Expo, AWS, Postgres, DynamoDB, Docker, Terraform.

City Detect | Full Stack Product Engineer (Design & Geospatial) | Tuscaloosa, AL | REMOTE (US) | Full-time | $110k–$159k + equity

City Detect uses AI and computer vision to map the physical world for cities. Sensors capture street-level conditions so local governments can find and respond to issues like blight and track how neighborhoods change over time. Founded in 2021, Series A, working with municipalities across Texas, California, Florida, and beyond.

We're looking for a frontend-leaning full stack engineer with a strong eye for design to own the map-heavy parts of our product. That means interactive maps, spatial data explorers and dashboards that city staff use to make decisions.

Stack: React/TypeScript, Python/FastAPI on AWS Lambda, Aurora PostgreSQL + PostGIS. Experience with Mapbox, deck.gl, Leaflet, D3, vector tiles/H3, or nation-scale OSM data is a big plus.

Mid to senior level. Small team, close work with the founders, real ownership.

Process: phone screen, portfolio/design review, 1–2 technical conversations, references, then a chat with our CEO. No LeetCode.

Perks: unlimited PTO, health/dental/vision, $100/mo wellness stipend, team retreats twice a year.

Apply: https://jobs.gem.com/citydetect/am9icG9zdDr5AWjF1AZ1UgSdc0I0... Questions: bjorn@citydetect.com

Beacon AI | 3 days hybrid in San Carlos, CA | https://beaconai.co/careers

Due to U.S. export control regulations, we can only hire U.S. Persons (U.S. citizens, Green Card holders, lawful permanent residents, or individuals granted asylum or refugee status).

Beacon AI builds intelligent systems that make aviation safer and more autonomous. We’ve completed multiple DoD programs and are expanding our team with exceptional technical leaders to push the boundaries of human-machine collaboration in the cockpit. At Beacon, you will lead by example, mentoring and growing a small team of talented engineers (typically 1–2 to start) while staying hands-on in design and execution. You’ll help shape critical systems that advance aviation safety and autonomy, working alongside a team that values effort, creativity, and accountability.

We’re hiring Senior/Lead Engineers with 5+ YOE who love solving complex problems. At Beacon, you’ll own your work end-to-end, from prototype to deployment, and literally see your code take flight in real world aviation environments! Roles:

++ iOS Engineer [Tech Stack: Swift, SwiftUI, UIKit, Mapbox]

++ Senior Security Engineer [FedRAMP ATO/SSP or DoD IL4/IL5, AWS/GovCloud]

++ Infra/Backend Engineer [Tech Stack: AWS]

++ WebApp/FrontEnd Engineer [Tech Stack: Python, Typescript, React]

++ Lead Autonomy/Robotics Engineer [Tech Stack: C++, Python, iOT]

Fazeshift | Senior Software Engineer | San Francisco, CA | Onsite 5 days | Full-time | $200k–$235k + equity

I’m Chris, VP Engineering at Fazeshift. We build AI agents that do accounts-receivable work: billing, collections, payments, and cash application. We're nine engineers plus our Founder/CTO and me, and I'm hiring someone who can help us do more, better: increase both our production capacity and the quality and sophistication of the software we build.

We think AI changes what’s possible here. Instead of giving finance teams another dashboard to stare at, we’re building agents that actually do the work across billing, collections, payments, cash application, and the workflows connecting those systems.

The interesting engineering constraint: we’re intentionally not the system of record. We act across customers’ ERPs, banks, and billing systems. A situation where a timeout doesn’t necessarily mean a write failed, and retrying blindly can be the wrong answer.

A few of the questions we get to work on: * How do you let agents take real actions safely? Permissions, auditability, retries, idempotency, durable execution, and knowing when a human needs to stay in the loop. * How do you build a coherent product when you’re intentionally not the system of record? APIs are inconsistent, webhooks arrive late or twice, and a timeout doesn’t necessarily mean a write failed. * How should an engineering team work when coding agents can take on meaningful chunks of implementation, debugging, testing, and exploration?

We’re especially interested in engineers who have already changed how they work because of AI. If you delegate meaningful work to agents, keep independent tasks moving in parallel, debug where they get stuck, and shave the occasional yak to get things working properly, you’ll feel at home here. We’re still figuring this out too (and updating our priors regularly).

At the same time, generated code is still your code. We care about judgment, debugging, systems thinking, taste, and understanding what you’re shipping.

Our approach is roughly: design enough to find the shape of the problem, then build to learn. There’s a short distance here between noticing a problem, building the fix, and seeing the result.

We’re looking for 5+ years of professional experience, strong TypeScript/full-stack skills, and production ownership. No fintech background needed.

Stack: TypeScript/Next.js, tRPC, Prisma/MySQL/PlanetScale, Inngest, AWS.

I’m Chris, VP Engineering, and I read these applications myself. Email chris.zehner@fazeshift.com with HN in the subject, your LinkedIn/GitHub/résumé, and a few sentences about something you’ve built and how you knew it worked or how AI has changed your approach. No public code needed; please leave out confidential details.

Thunder Compute (YC S24) | C++ Systems, Infrastructure, BizOps | San Francisco (Onsite) | Full-time | https://www.thundercompute.com

We're building the VMware for GPUs. Most GPUs in the cloud sit idle a lot of the time because they're bolted to one machine over PCIe. We decouple them.

Our virtualization layer is a userspace shim, loaded through LD_PRELOAD, that intercepts CUDA calls and ships them over the network to a host with a physical GPU somewhere else in the data center. Workloads run unchanged. When a process goes idle, the GPU detaches and gets reassigned, and reattaches in tens of milliseconds when it's needed again. Think Ceph for GPUs: the GPU becomes a network resource a cluster-wide scheduler can pool and pack.

The hard part is making that fast. We're within ~10% of native on most AI workloads, and it lets us serve ~1.8x more users on the same fleet. We run it in production as our own GPU cloud and sell it to enterprises with underutilized fleets.

Team is from Citadel Securities, Aquatic, Old Mission, AWS, and Bain. Series A, $17.5M raised from Matrix and Y Combinator.

Open roles:

- Software Engineer, C++ Systems ($215K-$325K + meaningful equity). Low-level, latency-sensitive work on the virtualization layer. Quant dev / HFT background preferred: https://jobs.ashbyhq.com/thundercompute/2efae53b-817c-43e7-9...

- Software Engineer, Infrastructure ($150K-$250K + meaningful equity). Go, Kubernetes, reliable systems at scale: https://jobs.ashbyhq.com/thundercompute/927a922b-c607-4b0e-a...

- Business Operations Lead ($150K-$225K + meaningful equity): https://jobs.ashbyhq.com/thundercompute/4f28e418-b77b-446e-a...

If you're cracked at building systems software and want to do something more meaningful than creating liquidity, reach out.

Email me at carl@thundercompute.com and mention HN. I read every email.