San Francisco Jobs - December 2025

Stealth AI Startup | Full-time | SF | onsite | Founding engineer

We are looking for engineers (ML & backend) to join a startup where we’re building LLM-based forecasting systems that output calibrated probability distributions (not just answers) and improve daily based on new observations. It’s a founding role with substantial equity and total compensation $200k-$500k/year.

If you’ve worked on calibration/uncertainty quantification, forecasting benchmarks, prediction markets, or agentic monitoring pipelines - write me!

Contact: mardariya@gmail.com

Miniswap | Founding Engineer | Full-time | ONSITE (hybrid) San Francisco | No visa sponsorships

Miniswap is a marketplace for complex hobbies, starting with Warhammer. We're backed by Y Combinator and have just closed our seed funding round. In the past six weeks since we launched, users have listed $150,000 of tabletop wargaming miniatures for sale on Miniswap and over $15,000 have been sold.

We're looking for a founding full-stack engineer who is passionate about their hobbies -- whether it be Warhammer, Magic: The Gathering, mechanical keyboards, fountain pens, you name it.

We have an opinionated tech stack: deep use of PostgreSQL (composite types, functions, etc), Rust for our monolith, and HTMX with modern vanilla JS/CSS. Our mentality is to extract the utmost value we can get out of these technologies before introducing additional infrastructure and frameworks. No ORMs, npm, React, etc. If this prospect excites you, please reach out :)

Previous professional Rust experience is not a strict requirement for the role.

Compensation: $100-180k + 0.5%-2% equity

Contact: zak@miniswap.gg

Marker | Full-time | Remote or Hybrid (NYC/SF/London) | https://markercollective.com

Marker is a technology venture from 3 leading communications agencies. We’re an incubator building and launching force-multiplying software products for communications teams.

Our first product is Delve (https://delve.news) — a coverage monitoring, analysis, and insight toolkit to track and measure the entire online conversation about your business or industry.

Our product team is small and autonomous, but with the resources, expertise, and customer access of the global agencies we work with. We’re hiring an early engineer to join us on this journey; you’ll have a large impact on what we build, how we build it, and where we’re going next.

Our current technology stack includes Deno, React, and PostgreSQL. Bonus points for expertise in any of: data visualization, distributed systems, web scraping, large-scale data pipelines.

Apply: https://careers.markercollective.com/jobs/479834-software-en...

No recruiters or agencies, please.

Parabola | Senior SRE + Full Stack Engineer | NYC/SF Hybrid | Full-time

We're building the AI-powered workflow automation platform that ops and finance teams at Lyft, Flexport, WHOOP, 1000+ other companies use to escape spreadsheet hell. They get messy data from PDFs, emails, Excel files, APIs... We let non-technical teams build production-grade data pipelines by typing what they want in plain English.

Senior SRE: Join our platform team. Own reliability, security, and developer experience. You'll be on-call but working on interesting problems: scaling multi-tenant infrastructure, securing 100+ integrations, building tools that make deploys boring (in a good way). Bonus if you care about the product, not just the pipes.

Senior Full Stack Engineer: Be your own PM. Build new interfaces and features that unlock automation for people who've never written code. Work across the stack on problems like: LLM-powered pipeline generation, parsing messy PDFs with AI, real-time collaboration on workflows.

If you've ever thought "I could automate this if I had time," come build the tool that lets everyone think that way.

Apply: https://jobs.ashbyhq.com/parabola-io or email cj@parabola.io

Songscription | Founding Engineer | San Francisco, CA | In-Person/Remote

At Songscription, we are building state-of-the-art AI models to automate music transcription, with the vision of enabling any musician to learn any song, on any instrument, at any level.

Apply at https://songscription.ai/careers and/or feel free to shoot me an email at alex (at) songscription.ai

Rippling | Actively hiring across SF, NY, or SEA| ONSITE/HYBRID (3 days M/Tu/Th, non-negotiable)| Base + Equity (RSUs), pay range included in all job posts Rippling (YC W17) is a unified workforce management platform. We bring together HR, IT, and Finance in a single system to help businesses manage all their operations—from payroll and benefits to computers and corporate cards—globally. We're rapidly expanding beyond workforce management and have other verticals in active development.

We value engineers who are energized by, and thrive in, a fast-paced, high ownership environment. We have many high priority roles open across the org. Right now we're making major investments in growing the Financial Products & Spend Management engineering vertical.

IC Roles SWE 2 - Financial Products (Toronto) - https://ats.rippling.com/rippling/jobs/844d2bdf-d672-46d9-a7... Senior Eng - Financial Products - https://ats.rippling.com/rippling/jobs/1f81bd71-a3b5-4b91-aa... Staff Eng - Global Payroll - https://ats.rippling.com/rippling/jobs/cf48e126-e063-4163-9f... Sr Staff Eng - Global Payroll - https://ats.rippling.com/rippling/jobs/d3c8bed0-d988-4765-b8...

Engineering Management: Eng Manager - Global Payroll (Toronto) - https://ats.rippling.com/rippling/jobs/e43448da-6a87-45b9-a9... Sr Eng Manager - Financial Platform - https://ats.rippling.com/rippling/jobs/a9658fef-88df-4dad-a4... Sr Director of Eng - Payroll Platform - https://ats.rippling.com/rippling/jobs/2d85be1f-9538-49d3-b1...

Rippling Careers Page - https://www.rippling.com/en-GB/careers/open-roles

Kato | Founding GTM Strategy & Operations | Onsite in San Francisco | katohq.com

Apply here: https://jobs.ashbyhq.com/pear/7ecc09db-8a34-43ec-8a18-f48eb4...

Kato is building an AI-powered servicing platform that automates critical workflows across every channel with full compliance and best-in-class recoveries. Human teams are then free to focus only on the judgment-driven work that truly needs them.

We are starting today with a compliance first Voice AI agent that handles outbound and inbound loan servicing calls, and are already in production with major names in the fintech lending space like Bilt Rewards and Parafin.

We’re looking for a Founding GTM Strategy & Operations hire to help build the operational machinery that turns our early traction into a repeatable, scalable revenue engine. This is one of the most critical hires at Kato - someone who will work directly with the CEO to build out our sales motion, strengthen our brand, and create leverage across the go-to-market function.

Looking for someone with

- 1–2 years of experience in consulting or startups

- Prior outbound sales (BDR/SDR) or sales operations experience strongly preferred

- Bachelor’s degree in Business or related field

Rocketable (YC W25) | Founding Engineer - Automation Platform | Onsite (San Francisco or Marin County) | $200K-$250K | 1-4%

Rocketable acquires profitable SaaS companies and transforms them into fully autonomous systems. No human operators. No engineering team shipping features. No support staff answering tickets. Just AI running the entire business.

This sounds crazy to most people, but we think the trajectory is obvious. If we're right, you'll have built the infrastructure that runs a new kind of company.

Interested? More info & application here: https://www.ycombinator.com/companies/rocketable/jobs/CArgzm...

Polymath Robotics (YC S22) | Devops Engineers, Fullstack Engineers, Apps Engineers, Networking Engineers, Program Managers | San Francisco, ONSITE | https://www.ycombinator.com/companies/polymath-robotics

Polymath Robotics is unlocking the next phase of autonomy in the industrial setting. We are rapidly growing our revenue and need your help to build our production system!

YC W25 Biotech Startup Hiring – Build Programmable Therapeutic Vines

We’re EPIVINE—engineering self-replicating vines that deliver epigenetic age-reversal therapies as over-the-counter botanical supplements, bypassing pharma patents. Backed by YC, we’re turning plants into living pharmacies.

We’re hiring:

1. Senior Synthetic Biologist – Engineer dCas9-p300 nanostructures & optimize epigenetic editing. 2. Biomaterials Engineer – Design shape-memory alloy scaffolds that guide vine growth. 3. Computational Biologist – Model aging reversal (H3K9me3) and analyze epigenetic beacon data. 4. Full-Stack Biotech Dev – Build the IoT and data platform for our smart vineyards. 5. Head of Regulatory Strategy – Navigate FDA botanical supplement pathways and secure OTC status.

Why join? Founder-market fit (published epigenetic plant research), massive aging/wellness market, 3 provisional patents, and YC network. Located in South San Francisco.

*Apply:* Don’t send a resume. Pick a role, build something relevant in 48 hours, and email it to franciseni722@gmail.com.with the subject: `[Role] – [Your Name] – 48hr Build`.

We’re building the future where your garden treats disease. Help us grow it.

Foxglove | Onsite (San Francisco) & Remote | Full Time | https://foxglove.dev/

Foxglove is the leading observability & data platform for robotics and physical AI. Our software supports the full data lifecycle, from collection, upload, and storage, to analysis and visualization. We're assembling the most talented team in the industry to build a platform for all types of robots. Sound interesting? Join us!

Many engineering & product roles:

- Data Engineer

- Rust Engineer

- Visualization Engineer

- Forward-Deployed Engineer

- Product Designer

- Visual Designer

GTM roles:

- Solutions Engineer

- Account Executive

- Demand Gen

- Product Marketing Manager

https://foxglove.dev/careers

Squint | Onsite, San Francisco | Squint is the leading manufacturing intelligence platform. We're leveraging the latest in AI, spatial, and hardware capabilities to accelerate human potential and spark the next industrial revolution.

What makes Squint special? - Our customers include some of the most iconic manufacturing brands across Food and Beverage, Automotive, and Consumer Package Goods. Work here literally transforms how the world around you is made.

- We're not replacing people with AI, we're up-leveling them; capturing insights, turbocharging workflows on the factory floor, and making every operator an expert.

- We're bringing consumer-grade quality to enterprise software, combining cutting-edge tech with deep customer empathy to build a product that's powerful, magical, and deeply loved by our users.

High Priority Open Roles:

- Product Engineer, High Velocity

- Senior GTM Recruiter

- Controller

- Executive Assistant to the CEO

- Director of Enterprise Sales

- Director of Enterprise Sales, Energy Sector

- Director of RevOps

- Customer Strategy Partner

- Strategic Enterprise Account Executive

- Senior Sales Engineer

View full list of roles and apply here: https://jobs.ashbyhq.com/squint.ai?utm_source=Hackernews

Alembic | https://alembic.com | Hiring: AI Science, Engineering, Data, GTM | SF (5 days onsite)

Causal AI at scale for Fortune 500. We melted GPUs building this—now running one of the world's fastest private supercomputers. Customers include Nvidia, Delta, Mars. $145M Series B. More: https://venturebeat.com/ai/alembic-melted-gpus-chasing-causa...

Learn more and 1-click apply—>https://jobs.ashbyhq.com/alembic?utm_source=61WE77DENQ

foam.ai | Founding Engineer | $180-$300k | 0.25%-2% | SF (onsite) | Full Time

foam is building a new observability stack that captures, traces, and links everything, purpose-built for AI. We use this foundation to feed complete context into AI to automatically identify and root-cause breakages across entire systems.

* We’re a five person team. Perla (CEO) was the 5th engineer in the consumer facing team at Affirm (pre-IPO).

* We've raised $9.9M in seed funding from Khosla Ventures, Max Levchin, The House Fund, and South Park Commons

* We’ve got active betas at Orb, Braintrust, Plaid & TogetherAI.

We’re looking for engineers who want to take point and work hand in hand with Perla on one or more of our core systems:

1. The Telemetry Engine - Think of this as a major extension of OTEL custom built to capture signals that have historically been inaccessible to humans.

2. The Root Cause Analysis Engine (aka Solver) - This is currently an agent swarm, but evolves every week in search of better and better root cause analysis.

For a bit more on the role, check out: https://foam.ai/careers

If putting an end to awful on-calls and building a system that can deliver self-healing software is exciting to you, send an email to luke -at- foam dot ai with your resume and mention you came from HN.

SentiLink | https://www.sentilink.com/ | Engineering & Data Science | REMOTE, HYBRID, and ONSITE (USA & INDIA) | Full Time

At SentiLink, we stop identity fraud at scale. Our products protect banks, fintechs, marketplaces, and leading financial institutions from synthetic identity fraud, identity theft, and emerging threats — analyzing millions of applications while keeping real users moving fast.

We’ve seen tremendous traction and are growing extremely quickly. Our real-time APIs have helped verify hundreds of millions of identities, starting with financial services and rapidly expanding into new markets. SentiLink is backed by world-class investors including Craft Ventures, Andreessen Horowitz, NYCA, and Max Levchin.

SentiLink supports a variety of ways to work, ranging from fully remote to in-office. We operate as a digital-first company with strong collaboration across the U.S. and India. We maintain physical offices in Austin, San Francisco, New York City, Seattle, Los Angeles, and Chicago in the U.S., and in Gurugram (Delhi) and Bengaluru in India. If you’re located near one of these offices, we would love for you to spend time in the office regularly. Some roles are hybrid or in-office by design. For example, our engineering team in India works primarily from our Gurugram office.

We’re a small, high-impact team solving one of the most interesting and adversarial problems in fintech: how do you build systems that reliably determine whether a real human is on the other side of a financial transaction?

We’re hiring across Engineering (Full-stack and Infra) and Data Science / ML roles. Hiring at Manager/Director level as well as mid-level/Senior levels.

We’re language-agnostic and hire for fundamentals. Across the team you’ll see: • Python, Go, Rust, Scala • PostgreSQL, Snowflake • Kafka, Redis • Terraform, Kubernetes • ML: XGBoost, PyTorch, Feature stores, real-time scoring pipelines

If you love solving complex distributed systems challenges, building customer-facing ML products, or working on detection systems that must be both high-precision and low-latency, you’ll fit right in.

Roles are here: https://jobs.ashbyhq.com/sentilink?utm_source=hacker_news

If you have questions, feel free to reach out directly at liz.woodfield at sentilink dot com.

PUNTT.ai | Founding Enterprise Account Executive | Full-time Founding Role | Hybrid in San Francisco

Our mission is to kill the review — and free people to do meaningful work.

Partner directly with the Founders and CEO to build and scale our enterprise motion from the ground up. If you’re excited about selling in an AI-first environment, shaping GTM in real time, and owning revenue in a fast-moving zero-to-one environment — this is your lane.

Ideal profile: – 7-10 years experience - 2+ years CPG (consumer packaged goods) experience or connections – Experience working with Marketing, Creative, or Operations orgs is a strong plus – Someone who thrives in startups, ambiguity, loves refining the narrative, and wants a front-row seat to building an AI category

More info & apply: https://wellfound.com/l/2BKuiN

Rootly | AI-native on-call & incident response (Slack/Teams) | REMOTE (US/Canada/Europe); optional hubs SF & Toronto

We build the end-to-end platform that helps SRE/eng teams detect, manage, and learn from incidents faster—trusted by 1000+ companies (logos include Glean, Mistral, Figma, LinkedIn, Dropbox, Replit, Grammarly, etc.).

Roles:

- AI Engineer

- Senior Security Engineer

- Senior Site Reliability Engineer

- Senior Product Engineer

- Senior Product Manager

- Technical Product Marketing Manager

- Implementation Engineer

- Product Engineer Co-op

- Principal Product Designer

- Customer Success Manager

- Mid-Market Account Executive

- Enterprise Account Executive

Why Rootly: small, senior team; real adoption; lots of ownership and impact; AI-native workflows; customers across startup → enterprise.

Stainless | Engineers, EMs, GTM, Former Founders | NYC & SF (onsite) | Full-time When you npm install openai or pip install anthropic, you’re pulling code generated by Stainless. We’re building the platform for high-quality, easy-to-use APIs — and companies like OpenAI, Anthropic, and Cloudflare already rely on us. We’re ~3 years old, ~50 people, with strong revenue, several years of runway, and backing from Sequoia and a16z. As one of our first 35 engineers, you’ll have real ownership, autonomy to build great products, and a direct hand in shaping the future of how developers consume APIs. We’re looking for exceptionally productive, thoughtful, and kind people who want to make software development better for everyone. Learn more & apply → https://stainless.com/jobs?utm_source=YlRQ8pvARO

CEF AI | AI Innovator & Principal Software Engineer | Full Time | San Francisco (hybrid, remote-first) | AI Innovator: $100k–$200k + equity | Principal SWE: $80k–$150k + equity | AI Innovator: https://linkly.link/2KOOz | Principal SWE: https://linkly.link/2KOP6 CEF AI builds an AI-first data automation platform for secure, decentralized orchestration of agents that compute directly on encrypted data streams. We’re shipping original systems (not wrappers), with multiple tuned models (CV, NLP, LLMs) and a next-gen multi-agent data infrastructure. Small team, high ownership, low bureaucracy. What you’ll do

AI Innovator: Prototype and ship production AI features fast; extend our multi-agent orchestration; design private/sovereign data pipelines and dynamic indexing; collaborate tightly with founders to turn research into product.

Principal SWE: Own core platform architecture; design and scale distributed backends/APIs; build great DX (SDKs/CLI); lead reviews/mentorship; drive 0→1 projects with strong reliability and observability.

You might be a fit if you have

A track record taking systems from concept to scale and to revenue.

Deep backend/systems skill (Go/Rust/Kotlin or similar); strong CI/CD/testing discipline.

Experience with distributed, real-time data infra; privacy/security minded.

Hands-on AI product chops (CV, NLP, LLMs/agents) and bias to build/iterate quickly.

Clear communication, product intuition, and comfort working directly with founders.

Apply via the role links above.

Automat (runautomat.com) | San Francisco (In Person) | Multiple Roles

Automat (YC W23) - the simplest way for companies to create AI agents that take on repetitive, tedious tasks — from navigating complex user interfaces to reading and processing documents. Our technology helps some of the world’s largest companies streamline their operations.

We’re a small talented team still in the early days of building, and your contributions will go beyond just code. You’ll have the opportunity to actively shape technical solutions, influence product direction, and contribute meaningfully to all aspects of our engineering culture.

Roles:

Full Stack Software Engineer

Forward Deployed Engineer

Applied AI Engineer

And More! See all roles here: https://www.runautomat.com/careers#roles

Artificial Analysis | https://artificialanalysis.ai | Full Stack Engineer, ML Engineer, Member of Technical Staff | Onsite in San Francisco or in Australia/New Zealand | Competitive Salary + Equity

Artificial Analysis is an independent AI benchmarking and insights provider. We benchmark AI to help engineers and companies understand AI and make informed decisions regarding which AI technologies to use. We are fast growing with a team of 20 and have backing from investors including Nat Friedman, Daniel Gross & Andrew Ng.

We are hiring for four roles:

1. Full Stack Engineer: Full Stack Engineer to support our benchmarking of AI and with communicating these benchmarks to our users. Proficiency in Typescript & Python required. Familiarity with LLM APIs preferred. Tech stack: Javascript/Typescript, Node.js, React/Next.js, Python.

2. ML Engineer: ML Engineer to support our benchmarking and evaluation of AI software stack. You will design and run benchmarks and evaluations of different AI models. Strong analytical skills and proficiency in Python required.

3. Member of Technical Staff: You will design evaluations of different AI models and work to translate technical insights to analysis that helps companies navigate AI.

Apply at hiring (-at-) artificialanalysis.ai with your resume, github and dot points on relevant experience (including anything you've built). Add | HackerNews to email subject line.

Comulate | Senior Engineer (3+ YoE) | ONSITE in San Francisco, CA

We're building automation software for the $7T insurance industry, accelerated by AI. Seed stage in terms of headcount (~ 20 people) but Series B in terms of business traction (+ cash-flow positive). We've intentionally stayed under the radar.

- Product has caused customers to literally cry tears of joy

- Experienced eng team from Airbnb / Brex / LiveRamp

- Stack: TS, Postgres, React, GraphQL, and Next.js

HomeVision | Multiple Roles - Eng, SRE, Analytics | Hybrid SF & Remote | Full-Time | $100k-$220k + equity We have three open roles:

- Engineer - Hybrid SFO I'm looking for an junior-to-senior software engineer to work with me (CTO) directly. Our systems process millions of pages of documents a month for the mortgage industry. We work with some of the largest lenders in the country and are at the forefront of applying LLMs and other multi-modal models in this industry.

New-grad and junior engineers particularly encouraged to apply. Looking for people who are motivated to write good code with a good mix of practicality and aesthetics.

- SRE - US Remote (SFO or Seattle preferred) - This is a broad role on the platform team including AWS infra w/terraform, software engineering, and IT

- Analytics Engineer - US Remote (SFO or Seattle preferred) - Another broad role that includes managing the data warehouse, building durable and ad-hoc reports in sql and python, and doing deep analysis.

Please apply here: https://jobs.ashbyhq.com/homevision/a3f79d43-5d9e-46bf-a43f-...

Finch | Staff Software Engineer, Backend | HYBRID - SF or NYC | https://jobs.lever.co/finch/62ac428a-80ef-4469-9e06-0b87ed4f... | $200K+ base + equity

Finch (tryfinch.com) is building unified API infrastructure for employment systems—think Plaid, but for payroll and HR data. We connect 401k providers, insurance companies, and other fintech apps to 200+ payroll providers through a single integration. Series B backed by General Catalyst, Menlo, YC, and angels including founders from Plaid, Brex, Mercury, and Ramp.

We're looking for a Staff Backend Engineer (10+ years) to lead large cross-team initiatives, design systems for high-volume data processing across complex employment integrations, and help set architectural direction. You'll work with NodeJS, TypeScript, PostgreSQL, Redis, and AWS. We deploy daily, practice TDD, and care deeply about building reliable, scalable APIs. Strong systems design skills and comfort with ambiguity are key—you'll be defining problems as much as solving them.

Hybrid (2+ days/week in SF or NYC). Equity includes a 10-year exercise window. Full benefits, unlimited PTO with 3-week minimum.

Happy to answer questions here, or apply via the link above.

Arcol | Senior Software Engineer | NYC, SF, or Remote (US/Canada) | Full-time

Arcol (arcol.io) is a small, high talent density team building the future of building design - a future that's collaborative, fast, and intuitive. We're a web-native, fully collaborative 3d design tool modernizing the experience of architectural design for teams of all sizes.

We're looking for senior engineers with experience in modern web technologies - some of our key technical building blocks are Typescript, Rust, wasm, WebGL - and a strong ownership mindset. Experience with computational geometry, computer graphics, or similar a strong plus. This role sits at the intersection of solving deep technical foundational challenges with shipping a product that solves real problems for real people.

Reach out to me directly at thomas@arcol.io or peruse our careers page (https://www.arcol.io/careers) - we'd love to hear from you!

At Peregrine, we are transforming the way organizations engage with their data, making it easily accessible and immediately actionable for those who need it, when they need it most.

SF / NYC / DC | In-office | Full-time | $130,000 - $275,000

Senior Infrastructure Engineer (UK) https://grnh.se/6c1kjk525us

[Leadership] Engineering Manager (SF) https://grnh.se/s7yxefzs5us

[Leadership] Staff SWE, AI (SF) https://grnh.se/0w7ot24o5us

Staff SWE, Product Security (SF / NYC) https://grnh.se/b2kbmt3j5us

SWE, AI (SF, NYC, DC) https://grnh.se/yl9kuqrg5us

Sr Software Engineer (SF, NYC, DC) https://grnh.se/gwf63pot5us

Sr Product Designer (SF / NYC) https://grnh.se/s96svypy5us

Sr Design Engineer (SF) https://grnh.se/z8ev1cgu5us

Product Manager (SF) https://grnh.se/kyvpq2ww5us

Thunder Compute, YC S24 | https://www.thundercompute.com | In-person in San Francisco

Hiring 4 full-time Software Engineers for low-level C++ systems work (HFT skillset), reporting to the CTO, team ex-Citadel, ex-Aquatic, ex-Bain

We're a cloud provider using GPU virtualization software to arbitrage GPU prices.

To our customers, we are a direct substitute for Runpod, Lambda, Coreweave, etc. with a simple UX and low prices.

Our advantage is we have spent 3 years bringing research technology to market which lets us use each GPU more efficiently than competitors. We can buy GPU compute, make it more efficient, and resell it at 60%+ profit margins.

We recently closed ~$4.5M of funding to triple our team size with a focus on recruiting the world's best low-level talent.

If you're cracked at building C++ systems software, on noncompete and bored, or looking to do something more meaningful than creating liquidity (you can tell most of our team is from HFT), reach out.

To apply: email met at carl@thundercompute.com and mention HN. I read every email.

OmniAI (YC W24) | https://getomni.ai | Full Stack Engineers | SF In-Person | Full Time | $125k–$175k • 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...

Saildrone | Multiple Roles | Onsite/Hybrid (US Only) | SF Bay Area (Alameda) | Full-Time | https://www.saildrone.com/

Saildrone is the world's leading collector of ocean-related in situ data via uncrewed vehicle, above and below the sea surface. We work with navies across the world to deliver insights about waterways, contribute to safety of life at sea, and mitigate illegal fishing and trafficking. Additionally, we work with governments, civic agencies, foundations, universities, and private companies around the globe to derive better information about our oceans and seas - be it sailing drones into the eye of hurricanes to obtain new scientific storm data, mapping out the ocean floor, collecting new CO2 data in hard-to-reach areas, or counting biomass to establish fishing quotas.

Maybe you saw that we've repeatedly hucked drones into category 4 hurricanes[1]. Or maybe that we completed a transoceanic cable survey for Meta[2]. And maybe you saw that we just announced a large partnership with Lockheed Martin[3]. Or maybe you didn't see any of that, but you're still intrigued by the idea of autonomous, long endurance sailboats that help us better understand and secure our planet.

Whatever the case, we're hiring for a breadth of different positions across our organization. In software, we're hiring for folks in our Perception, Platform, Frontend, and Vehicle teams. Stacks vary from team to team, but we're looking primarily for folks with backgrounds in C++, Python, and/or JavaScript (Node, TypeScript, React). All software positions are hybrid roles based out of Alameda, just a quick ferry ride across the Bay from San Francisco.

In addition to software engineers, we're also hiring for a bunch of other positions across the company in production/manufacturing, technical operations, and more.

You can see a list of open positions on our career page: https://www.saildrone.com/careers

Please apply through our career page; be sure to select "Other" and specify this HN post when asked how you heard about us!

[1]: https://news.ycombinator.com/item?id=28715110

[2]: https://www.saildrone.com/news/revolutionizing-deep-water-ca...

[3]: https://www.saildrone.com/media-room/press-releases/lockheed...

Trunk | https://trunk.io

Marketing Lead (Developers) - Remote friendly | Forward Deployed Engineer- Software Engineer II | DevRel Engineer - San Francisco| Staff Full Stack Engineer - San Francisco | Sr Full Stack Engineer - San Francisco

Trunk is an a16z funded (25M) Series A dev tools startup, redefining software development at scale. At Trunk, our mission is to help teams create high-quality software quickly. AI has made writing code 10x faster, but shipping is still painfully slow. The bottleneck has shifted downstream - to merge conflicts, flaky tests, inconsistent code quality, and dozens of other frictions that drain productivity and morale. Engineering teams that can stay focused on designing, implementing, and delivering software will build magical, high-quality projects - and they'll be happier doing it. We're building a CI Reliability Platform that empowers teams to land code faster and develop happier!

Our products:

* Merge Queue: Ensure your PRs keep the builds you care about green at any scale. *Flaky Tests: Detect and eliminate Flaky Tests. Our tech stack:

Frontend: Typescript, React, Next.js, AWS Backend: Typescript, Node, AWS Data pipelines: Dagster, Python, polars CI/CD: GitHub Actions

Unlimited PTO (and we all actually take PTO), competitive salary and equity packages! Please apply here: https://trunk.io/jobs

Uncountable | NY, SF, London & Munich (In-Person) | Full-Stack Engineering

https://www.uncountable.com/hiring/hn

Uncountable accelerates R&D for industrial scientists across leading materials, chemicals, and life sciences organizations. With our SaaS solution, our customers get better products to the market in half the time. Uncountable was founded by MIT and Stanford engineers and has been profitable since 2016. Our team has grown from 50 to 100 over the last two years.

Full-Stack Engineers | $120k - $220k + Equity

---> Uncountable is looking for engineers who can spearhead the development of the Uncountable Web Platform. The position is heavily product-driven and comes with challenges across the stack.

--> Summer internships and working student positions are also available.

Learn more: https://www.uncountable.com/hiring/hn

Uncountable is hiring in New York City, San Francisco, London, and Munich.

Contact our CTO directly at jason@uncountable.com

Vibrant (https://www.vibrantpractice.com) | Founding Engineer | Full-Time | SF (hybrid) or Remote with frequent travel to SF

We're building Cursor for doctors. At Vibrant, we've picked the expensive, high-touch, data-heavy subspecialties of functional, integrative, and longevity medicine, and we've created AI agents that reduce hours of clinical work to minutes.

We're a world-class team of health tech founders, AI builders, and clinicians from Meta, Stride Health, Peloton, and Hinge Health. In just five months, we've built notetaking/scribing, Clinical Decision Support, and some of the integrations a clinician needs to run their practice with Vibrant as their AI Operating System.

In the words of doctors using our product already in production: "I have goosebumps, this is really incredible. Very accurate." "Seeing the patient overview AI-generated summary come to life after placing a couple notes is AMAZING. I'm losing it over here."

Our stack: Typescript, React, NextJS, React Native, Expo, AI SDK, custom AI agents, RAG, tools, and agentic workflows.

It's still early days for us, and we're looking for folks who ship fast and are curious and resourceful. If that's you, shoot me an email at pedro [at] vibrantpractice.com or just book an intro with me: https://book.vimcal.com/p/pedro/quick-chat

Baton | Senior/Staff Software Engineer - Infrastructure, Machine Learning (Technical Lead) / Senior Software Engineer - Full Stack, Technical Lead | San Francisco, CA (Hybrid) | Full-Time

Baton (baton.io) is Ryder's in-house product development group focused on harnessing emerging technologies to redefine transportation and logistics. With $10B in freight under management, our technology reaches every part of the U.S. economy.

We design and ship category-defining software that enables Ryder and its 50,000+ customers—including some of the world's most well-known brands—to plan and execute freight intelligently, efficiently, and cost-effectively. Our work includes everything from customer-facing software to the data platform that will power the next era of innovation at Ryder.

Baton's mission: enable supply chain on autopilot.

Ryder acquired Baton in 2022 to power its next wave of digital products. We operate at startup speed, with Fortune 500 reach. If you have a passion for solving complex problems and creating impact for the engine of the American economy, you'll love it here.

Current openings at Baton:

* Senior Software Engineer - Infrastructure, Machine Learning (Technical Lead, $200,000 - $250,000): https://grnh.se/urygfi2t7us

* Staff Software Engineer - Infrastructure, Machine Learning ($250,000 - $330,000): https://grnh.se/8li40yq37us

* Senior Software Engineer - Full Stack, Technical Lead ($200,000 - $250,000): https://grnh.se/5t2676n47us

Lovable | Multiple Roles | ONSITE | https://lovable.dev

At Lovable, we empower the 99% of people who can't code to build software as if they had a product team at a stellar tech company. We're one of the world's fastest growing startups in history.

You'd be joining a small, passionate team of serial entrepreneurs (ex-YC founders), competitive programmers, physicists, and people who care deeply about building exceptional products that unlock human creativity. We have multiple open roles, with most positions based onsite.

We cover relocation (most roles are in Stockholm, some in Boston, San Francisco or London) and in Engineering we're looking for:

- AI engineers - Full-stack, frontend, and backend product engineers - Design engineers, and product designers who ship - Forward deployed engineers - Security engineers - Data engineers - Platform engineers

We're also hiring across the board in Marketing, Growth, Sales, Support, Operations etc.

Apply at https://lovable.dev/careers mentioning HN in your application.

Neon Health | AI in healthcare | Hiring Eng, CSM & Growth | SF, Remote (North America)

- Senior Backend Engineer | SF, Remote (North America) | Full-time | $170-225k + equity

- Applied AI Systems Engineer | SF, Remote (North America) | Full-time | $120-180k + equity

- Customer Success Manager | SF | Full-time | $120-170k + equity

- Head of Growth | SF | Full-time | $150-$180k + equity

- Growth Specialist | SF | Full-time | $105-$135k + equity

http://neonhealth.com/

We’re mission-driven capitalists: making life-saving drugs more accessible, and building a $200B+ company on the scale of Palantir or ServiceNow.

Traction: profitable and growing fast. Selling 7+ figure contracts to enterprise healthcare customers.

Team: built by exited founders, YC & MIT alum, ex-Tesla, ex-Google engineers.

Top investors: funded by elite Silicon Valley VCs who've backed unicorns like DoorDash, Lyft, and Mammoth Biosciences. And strategic healthcare investors with deep industry connections.

Outsized impact & opportunity: work at the intersection of agentic AI, healthcare transformation, and life-changing patient outcomes.

If you want to work on a team of A-player athletes, doing the best work of your career, and helping get life-saving drugs to the people who need them, apply here: https://neonhealth.com/careers#open-positions (and make sure to mention HN!)

Shepherd | ONSITE | San Francisco, CA

Shepherd is an all-in-one commercial insurance platform. We provide savings on insurance premiums for commercial businesses that are leveraging modern technology on their worksites. While we began with commercial construction, we're expanding into adjacent sectors, like renewables.

We’ve raised over $20M and we’re looking for product-minded engineers to join us as we continue to scale! We’re looking for someone who thrives on ownership, drives results, and cares deeply about both technical excellence and customer impact.

We’re hiring for:

* Senior Software Engineer, Full Stack

* Senior Software Engineer, Backend

* Senior Software Engineer, AI Products & Agents

Our stack includes:

* Typescript, React, Next.js, GraphQL w/ Apollo, Node.js, Postgres & Redis

Apply here: https://shepherdinsurance.com/careers In the form, be sure to mention that you heard about this opportunity via Hacker News.

If you want to read more about our team and culture, check out our blog: https://shepherdinsurance.com/blog

ElectricSQL | https://electric-sql.com | Founders Associate | FT | US based, SF Bay Area preferred (working with remote team) | $140-160k + equity

Electric is a devtools startup. We solve reactive, real-time sync across client and server [1]. We have a large developer community, millions of downloads a week, high profile customers and top-tier investors. Our software is built into platforms like Firebase, Prisma and TanStack. Our cloud product is growing 7% week on week.

This is a generalist, operational role. Working directly with the founders and founding team [2] to handle company operations as we grow into and through the Series stages.

It would be ideal if you're based in the San Francisco Bay Area. If not, you need to be able to travel there every month or so. You also need to travel to Europe for team on-sites a few times a year.

More information and application details here: https://electric-sql.com/about/jobs/founders-associate

[1] https://electric-sql.com/blog/2025/07/29/local-first-sync-wi... [2] https://electric-sql.com/about/team