Chroma | ONSITE - San Francisco | Full-time | https://trychroma.com Chroma is the open-source database designed for AI. Help build the future of context engineering!

We're a team of 17, all engineers today. We work in Rust, Python, Typescript, and Go.

We're hiring for these areas:

- Database Storage

- Distributed Systems

- Product Engineering

- Platform

- Product Design

What we’ve recently done:

- We built and launched a new search API with hybrid search and sparse vectors

- We built a new sync API that lets us handle ingesting, chunking, and embedding data from sources (we currently support Github repos)

Apply here: https://jobs.ashbyhq.com/trychroma/9ed3aee8-07dd-44e3-9ca1-d...

More details at: https://careers.trychroma.com

Resemble AI | San Francisco Bay Area (Mountain View, CA) | Full-Time

We're creating state of the art AI models, including the leading foundation model for Deepfake Detection. Looking for full stack, frontend and machine learning engineers that would love to create prototypes directly with the founders.

Here's what we're looking for:

Frontend Engineer - We're looking for a Frontend Engineer to build intuitive interfaces for our AI platform. You'll work with React/TypeScript to create exceptional user experiences that make complex AI technology accessible to both developers and enterprise users.

Full Stack Engineer (Onsite only) - We are seeking a skilled Full Stack Engineer with experience with both Javascript and Python to join us. The ideal candidate will have a strong background in building and deploying web applications, a passion for working on cutting-edge AI technologies, and the ability to collaborate closely with our founders to create innovative prototypes.

Backend Engineer - Looking for Ruby on Rails and/or Python Developers to join our backend team. Scale up ML systems, make inference run more efficiently, and expose public facing APIs.

DevRel (Onsite only) - We're looking for a Developer Relations engineer to champion our voice AI APIs and open-source projects within the developer community. The ideal candidate will create compelling demos, technical content, and documentation while helping developers integrate our AI models.

Growth Marketing (Onsite only) - Seeking a data-driven growth marketer to accelerate adoption of our AI models across enterprise and developer segments.

If interested, reach out directly to me: zohaib [at] resemble.ai

Automattic | Remote | Full-time | Multiple roles

We’re looking for engineers to help us build, grow, and maintain products used by over a billion people each month across WordPress.com, WooCommerce, WordPress VIP, Jetpack, Tumblr, Beeper & Texts.com, Day One, Pocket Casts, and many more.

If you love the open web, open source, radical problem ownership, and simple over pure solutions, Automattic is probably the place for you.

Experienced Software Engineer

  * endlessly curious about how things work – infrastructure, language and libraries, product, and business
  * solves problems across any level of the stack, in any codebase
  * comfortable with using mostly PHP and JavaScript, no need to have serious experience with them
  * more info, salary, and how to apply <https://join.a8c.com/enghn> 

  * removes friction between developers and shipping software
  * owns availability, performance, and security
  * shares code, experience, and knowledge both internally and externally
  * more info, salary, and how to apply <https://join.a8c.com/syshn> 

We’re hiring across AI, full-stack & NLP engineering - onsite & remote roles for high-impact teams:

1⃣ Senior Software Engineer (AI) – San Francisco, CA (On-site) Full-time • $180K–$220K + equity • Team of 13 Build AI-enabled systems for programmatic SEO. Work across stack (React/TypeScript/NextJS/Tailwind/Apollo + C#/.NET9 + Python Langchain/Semantic Kernel + Postgres + GCP/Temporal). 5–12 yrs full-stack exp. Must know prompt engineering, multi-agent systems, orchestration (Langchain/Semantic Kernel).

2⃣ Founding Software Engineer – Los Angeles, CA (On-site, Fridays remote ok) Full-time • $125K–$200K + 0.2–1% equity Ship customer-first AI products end-to-end. Stack: Next.js, modern web tech, APIs, DB migrations, Terraform, AI tools (Claude Code, Cursor). 4+ yrs full stack/product/frontend exp. Must love product & design ownership. No visa.

3⃣ NLP / Machine Learning Engineer – Remote (Global) B2B contract • 6+ yrs exp • C1 English Build NLP pipelines for scientific term extraction & ontology mapping (UMLS, MeSH, SNOMED). Stack: Python, SpaCy, HuggingFace, SciSpacy, BioBERT/SciBERT.

Apply: bayonle.afolabi@hire1.email

Materialize | NYC Onsite / Hybrid | Full-time

Materialize is the live data layer for apps and AI agents. It lets your team use SQL to transform siloed operational data into up-to-the-second views of your business, helping you operate confidently in dynamic environments. Use Materialize to deliver fresh context to AI agents, power data-intensive UIs, and create low-latency, event-driven architectures that drive microservices and core business processes. Materialize is trusted by General Mills, Bilt Rewards, and Crane Worldwide Logistics to solve their most pressing operational data challenges while building a live data foundation for their AI transformation.

Under the hood, Materialize is a novel distributed database capable of incremental view maintenance over arbitrary SQL. We think it's pretty cool :D

Across all roles we're looking for folks who would be excited to work from our NYC HQ 3-5 days a week. We're currently hiring into the following areas:

* Database development: https://job-boards.greenhouse.io/materialize/jobs/5550315004

* Cloud infrastructure: https://job-boards.greenhouse.io/materialize/jobs/5561561004

* Console (our frontend UI): https://job-boards.greenhouse.io/materialize/jobs/5693572004

Konvu | https://konvu.com/ | Software Engineer | FULLTIME | ONSITE | Paris, France

At Konvu, we’re on a mission to make security invisible. As we move towards a future dominated by code automatically generated, tested, and deployed by AIs, we need a new paradigm for application security. We need vulnerabilities to be automatically detected, prioritized and remediated.

Behind Konvu are founders with deep roots in the security industry. As part of the founding team at Sqreen (YC W18), a notable security startup acquired by Datadog, we have firsthand experience in driving security solutions from concept to global impact.

We’re looking for:

* Head of AI https://jobs.ashbyhq.com/konvu/403ecd3d-7845-47d7-b24c-1fe18...

* Application Security Engineer (Entry-level / Intermediate) https://jobs.ashbyhq.com/konvu/d46947df-8172-4b4d-b1d8-e3b6b...

* Software Engineer - AI Agent (Expert) https://jobs.ashbyhq.com/konvu/b40839d0-768b-4e80-a066-3d7cc...

* Software Engineer (Intermediate) https://jobs.ashbyhq.com/konvu/be7be978-08be-4672-a9e5-a559e...

Atomic Fi | https://atomic.financial | Strong Junior to Mid Level Engineer | Automation, Integration Engineering | Full-Time | REMOTE (US)

Atomic builds tools that help users do common financial tasks like changing their direct deposit when they open a new bank account, changing their payment on file when they open a new credit card, or tracking and automatically cancelling their subscriptions.

Our Automation Engineers build integrations using tools like Puppeteer or by consuming third party APIs to automate those tasks. Knowledge of web fundamentals is a must!

If interested, apply here: https://jobs.ashbyhq.com/atomic-financial/7e781781-c559-4dde...

If you have questions or would like to connect about other jobs, feel free to contact me at jack [at] atomicfi.com

Sheer Health (https://www.sheerhealth.com) | New York, NY | Full-Time | ONSITE | $140-230k + equity If you or a loved one has ever suffered from confusing/egregious medical bills or insurance communications, this is your chance to give the power back to others in a similar situation.

Our mission is to demystify health insurance, healthcare and medical billing. By utilizing cutting-edge technology and advanced data analytics, we deliver personalized recommendations on how to save money, maximize use of plan benefits, stay on top of reimbursements and avoid erroneous or inflated medical bills.

Currently open roles:

---

Software Engineer, Browser Automation

Help us build out browser automation to investigate and answer tricky questions about insurance using playwright and create a browser agent.

---

Product Manager

Help the engineering team plan and execute on the most high-value activities.

---

Drop us an email to hn ~at~ sheerhealth.com if these sound interesting!

"Low politics" says a group who created the software that sold out the people of the world and is powering our fascism crisis.

Sphinx Defense | Engineering, DevOps, & Product | Remote (US Only), DC, Colorado Springs, LA | https://www.sphinxdefense.com

Sphinx Defense builds software to solve complex national security problems for America and its allies. Founded by engineers and technologists with deep experience across commercial and defense technology, we're building a vehicle-agnostic communication infrastructure to enable satellite operators to securely utilize antenna networks and maneuver satellites in real-time. We're bootstrapped, profitable, and growing aggressively.

To learn more about who we are, our engineering culture, and whether this is the right place for you, read our Key Values profile: https://www.keyvalues.com/sphinx-defense

Our current openings are: Sr. Backend Engineer - Colorado Springs : https://grnh.se/7184c0238us

Sr. Backend Engineer - Remote : https://grnh.se/3ef2598b8us

Don’t see a role that aligns with your interests or don’t have the specific Space/ Command & Control experience? Apply to the general interest application and list what type of role you would be interested in : https://grnh.se/4ce199d68us

Check out our open roles: https://www.sphinxdefense.com/#careers

Triumph Financial | https://triumph.io | Engineer (Senior | Lead | Staff) & Senior Product Manager | REMOTE (USA only) | Full Time | $150-$300k

At Triumph Financial, we’re building the modern freight payments network powering over $37B in annual volume. Our mission is to make freight transactions seamless, accurate, and secure, helping an entire industry move faster.

We’re hiring across multiple levels in Engineering and Product Management. Our teams are small (3–5 engineers), autonomous, and rotate quarterly to stay fresh and cross-functional.

Tech we use: We’re language agnostic and hire for fundamentals. Our teams work across a mix of:

* Ruby on Rails / Elm

* Java / React

* C# / React

If you’re a strong engineer who loves solving complex problems, mentoring others, and building real-world systems that move money at scale, we’d love to talk. We’re looking for people who are:

* Curious and collaborative

* Obsessed with product quality and user experience

* Excited to work on distributed systems and modern financial infrastructure

We also have an opening for a Senior Product Manager.

How to Apply:

Senior (it says Ruby, but will hire for others too): https://tbkbank.wd1.myworkdayjobs.com/en-US/tfin/job/Senior-...

Lead: https://tbkbank.wd1.myworkdayjobs.com/en-US/tfin/job/Lead-So...

Staff: https://tbkbank.wd1.myworkdayjobs.com/en-US/tfin/job/Staff-S...

Senior Product: https://tbkbank.wd1.myworkdayjobs.com/en-US/tfin/job/Senior-...

Please put “Ash HN” or something similar in the referrals so we can bubble you up.

If you have questions, feel free to reach out directly at aanderson at tfin dot com.

Findigs | Full-time | NYC | 3x/week in office M,T, Th) | findigs.com

At Findigs, we’re transforming the rental experience — making it fairer, stress-free, and more convenient by changing the fundamentals of renting.

We build high-scale applications that streamline renting for millions. Our modern tech stack includes TypeScript, Python, Node.js, React, and scalable cloud infrastructure.

We foster a collaborative culture where engineers have high ownership and autonomy, taking features from concept to deployment.

Join our sharp, supportive, and mission-driven team in our newly renovated SoHo/NoHo office.

Open role: Senior Software Engineer —> Apply here (https://jobs.lever.co/findigs/3b39616d-223f-4326-a500-f804c3...)

Base Salary of $180k - $210

Pre-IPO Equity

401k Matching up to 4%

Unlimited PTO

Lunch in office every day, home office setup stipend, monthly gym stipend

Protege | Remote (US) | Full-time | Mid / Senior / Staff Generalist & Data Engineers | https://withprotege.ai

Protege is looking to solve the biggest unmet need in AI — getting access to the right training data. The process today is time intensive, incredibly expensive, and often ends in failure. We’re building Protege to facilitate getting the right training data to AI companies.

We’re ~1.5 years old, lean, and well funded. We are growing and looking for exceptional engineers to build with.

Please apply at https://jobs.ashbyhq.com/protege or email us at careers@withprotege.ai if you don’t see a job that fits.

Count | Senior Software Engineer | REMOTE within UK/Europe/US East Coast | Full-time | https://count.co | £100-140k + Equity

Count is like Jupyter, Tableau and Miro combined in one tool. Some of the world's leading data teams use it for everything from iterating data models and performing in-depth analyses to creating process flow maps of their entire business.

We're a small team looking for experienced software engineers who are interested in tackling deep technical challenges in the data analytics space.

For the best possible user experience, we have developed various technologies in-house, including a custom WebGL rendering engine, our own data visualization library, and a reactive SQL/Python notebook and database query framework.

Example projects: leveraging agentic workflows in data exploration, accelerating rendering using quadtree tiling, extending interactivity and customizability of visualizations, developing serverless frameworks for executing database queries at high concurrency.

Our tech stack: TypeScript, Python, Node, WebAssembly, WebGL, Apache Arrow/Parquet, DuckDB, Kubernetes, React.

For more details and to apply: https://jobs.ashbyhq.com/count

Scorecard | Founding Engineer, Founding UX Designer, Founding GTM | SF, CA ONSITE | Full-time

Scorecard is building the leading platform for testing, evaluating, and monitoring AI applications. We help teams ship reliable AI products faster—from prototype to production. Our customers include developers and enterprises building with LLMs who need confidence their AI agents perform as expected.

We recently raised $3.75M in seed funding from Kindred Ventures, Neo, and angels from OpenAI, Google, and Meta: https://www.businessinsider.com/scorecard-raises-millions-ki...

See how we're helping enterprises like Thomson Reuters ensure their AI agents are production-ready: https://www.thomsonreuters.com/en-us/posts/innovation/from-t...

Tech Stack: Full TypeScript w/Next.js, Express, React, PostgreSQL, and agents like Claude Code/Gemini review.

We're an early-stage, fast-growing team tackling the most pressing problems in the AI reliability space. If you're excited about being a founding team member at a company defining how the industry evaluates and optimizes AI systems, we'd love to hear from you.

Open Roles:

- Founding Software Engineer: Build the core platform that helps developers test and evaluate AI agents at scale - Founding UX Designer: Design intuitive experiences that make complex AI evaluation accessible to all developers - Founding GTM: Help define and execute our go-to-market strategy as we scale with customers

Learn more and apply: jobs@scorecard.io w/ subject 'HN'

Greptile | Software Engineer | ONSITE San Francisco (SF) | https://greptile.com

Greptile is working on AI agents that catch bugs and enforce standards in pull requests. Reviewing nearly 1B lines of code a month for 1000+ companies including Brex, Substack, Whoop, as well as multiple F100s.

<20 people, raised ~$30M from Benchmark, YC, Paul Graham, SV Angel and others.

To apply, email daksh [at] greptile.com with subject line "Engineering at Greptile". Include most recent role and company and links to your LinkedIn and GitHub.

YourTechResume — Founding Engineer Remote (Global) | Full-time | $150k-$350k

About: AI-powered platform for resume optimization and job application automation.

Role: Build technical foundation as the first engineering hire. Own end-to-end features (Python/FastAPI/JS), architect scalable systems, and shape product direction. Ideal for builders who thrive in ambiguity.

Tech Stack: Python, FastAPI, SQLAlchemy, JavaScript, Anthropic Claude, AWS, Stripe, Docker.

Requirements:

Strong Python fundamentals Full-stack experience (personal projects count) Product-minded, self-directed, fast learner Nice-to-have: FastAPI/Django, AI/ML APIs, Stripe, AWS, LaTeX/startup experience Offer:

Founding equity + competitive salary Direct founder collaboration Flexible hours, modern tools Apply: Email resume + GitHub/portfolio + 3-5 sentence note to info at yourtechresume.com

SalesJack | Data Engineer | Hybrid (Hamilton/GTA Canada) | C$130K-C$150K + equity and benefits | salesjack.com

SalesJack is a sales software platform (CRM, Prospecting Service) for independent businesses in the construction supply industry. We are growing quickly and profitably. Our founding team and customers are based in the US, and we aim to grow engineering capabilities in Canada.

This role is responsible for leading our data pipelines development. SalesJack operates data ETLs from sources like client ERPs (enterprise resource platforms) and municipality open data to power our CRM features. You will collaborate directly with founders and lead engineers at the company and help:

- Enable scalability in our pipelines as we onboard more customers and data sources

- Setup visibility, monitoring and alerting in all parts of our ETL processes

- Allow plugging in AI led transformations at the right stages of our pipelines, and enable this to be done easily

- Lead RnD effort for AI toolings that transform a lot of manual work in the industry

We are looking for:

- 3+ years of data wrangling and pipeline scaling experience. We prefer if you have done so with a focus on reliability and efficiency (both in terms of compute and costs) in the past.

- Someone who loves experimenting with data, regularly tries out new tools, and enjoys exploring the possibilities of AI and machine learning—especially large language models (LLMs)—we want to hear from you.

Our hiring process will be:

1. Initial call with our founding engineer to briefly discuss your experience and introduce SalesJack ~ 30mins

2. Technical Exercise (this will a live coding on a screen-sharing call where we will ask you to work on some problem) ~1.5 hours

3. Call with one of our founders to see cultural fit ~ 30mins

4. Offer

Apply at https://jobs.ashbyhq.com/salesjack/5645b4c3-dc1b-4021-83d4-2... and mention Hacker News

Holepuch|Remote, Worldwide|Senior Node.js Software Engineer

At Holepunch, we are redefining the internet’s architecture. Our open-source P2P platform, Pear, enables developers to deploy applications directly from their machine to users, creating scalable, decentralized applications without traditional server infrastructure.

We are seeking Node.js Software Engineers to join our 100% remote, globally distributed team. You’ll work on our P2P stack, which includes over 1500 public npm modules, and help expand our ecosystem.

Why Holepunch?

- Work on groundbreaking technology that prioritizes user autonomy and privacy.

- Collaborate with a team of thinkers and innovators dedicated to reshaping the digital landscape.

- Contribute to a future where technology serves humanity, not the other way around.

Apply now to join our mission:

https://holepunch.recruitee.com/o/p2p-nodejs-engineer?source...

https://holepunch.recruitee.com/o/senior-node-engineer?sourc...

Arcol | Senior Software Engineer | NYC, SF, or Remote (US) | 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!