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312 matching jobs

  • Go
  • Machine Learning

Sumble is the newco from the founders of Kaggle. We are hiring full stack engineers, ai/ml engineers and growth/marketing. Can view our roles and apply here: https://sumble-inc.workable.com/

We are building a knowledge graph from web data with a first focus on data for go-to-market teams.

We use web data to identify things like org structure, tech stack, and key projects (e.g., GenAI initiatives, cloud migrations). Our product already has strong product-market fit, early revenue, and happy customers — and now we’re ready to accelerate.

Our long-term vision is to become the world's best data vendor. Try the product at sumble.com.

We are a team of 25 with experience at companies such as Google, Meta, Stack Overflow, Rippling, Snowflake, Confluent and Kaggle.

We raised $38.5MM from Coatue, Canaan, Square Peg Capital https://techcrunch.com/2025/10/22/sumble-emerges-from-stealt...

  • Full-time

Sycamore | Palo Alto | Full-time | https://sycamore.so

Founded by Sri Viswanath, former CTO of Atlassian, Sycamore enables organizations to build, deploy, and orchestrate AI agents with security, governance, and human oversight. The platform captures and compounds organizational intelligence over time, enabling systems that continuously improve.

We recently raised a $65M seed from Coatue & Lightspeed.

We're hiring across several roles:

- Applied AI Engineer: Deploy AI solutions with customers

- Product Engineer: Build user-facing product experiences

- Forward Deployment Engineer: Deploy AI solutions directly with customers

- Data Systems Engineer: Build pipelines and power data-driven products

- Staff Software Engineer: Lead core system architecture

- Cloud Platform Engineer: Run cloud infrastructure and developer systems

- Security Engineer: Secure systems and data

- Research Scientist: Advance the science of agentic systems

- Engineering Intern: Build and ship real features alongside the team

More info and apply: https://sycamore.so/careers

9 Mothers YC P26 | Robotics / Software Engineering | Austin, ONSITE | $150-400k + equity + benefits | 9mothers.com

I'm Russ, one of the founders of 9 Mothers. We're making AI weapon systems out of Austin, TX. Our first product is for stopping group 1 suicide drones. We started in 2025 - still a small team under 20 people. We're hiring for a lot of roles, but mostly in software and robotics.

https://jobs.ashbyhq.com/9-mothers

Posted 14 days ago by ukd1

MintMCP | Founding Engineer / Founding GTM | SF Bay Area (ONSITE)

MintMCP helps enterprises safely do more with Agents (e.g, governance around MCP tools and agents like Claude Code / Cowork, and others). We're building an MCP gateway as the foundation with the proper abstractions that enterprises need to allow long running agents to be safely deployed across an entire organization; organizations can easily and clearly limit the blast radius of what an agent can do, while giving it the right combination of tools to be useful.

We're a small team of humans with dozens of agents: our company operates on the infrastructure we build for enterprises. We're looking for agent-forward engineers and GTM folks to help solve scaling problems, maintain the highest standards for security, make agents and MCPs usable and useful.

Problems we're solving right now: Agent Identity, ReBaC for tool resources, scalable hosting of private MCP servers, and our agent platform that vertically integrates with the foundational MCP gateway layer.

If you have experience in infra, security, and agents, and MCPs, you might find the problems we're working on exciting!

You can see more here: https://www.mintmcp.com/hiring. Your agent might find the page interesting!

Posted 14 days ago by vrv

  • Full-time

9 Mothers Defense | Robotics Engineers | Austin TX | Full-time | ONSITE

We're a YC company building AI-driven turrets to stop hostile drones - where robotics needs F1-level speed.

We're looking for smart, T-shaped teammates: experts in some part of robotics who are happy to jump in wherever needed.

U.S. persons only.

Contact CTO directly at roman@9mothers.com with your portfolio of previously built robots

  • Go

Always Further, founded by team who created https://sigstore.dev , used to secure npm, pypi, brew, and provide attestations for github releases, nvidia and google for AI model signing - we and are now building https://nono.sh agent security tooling.

We have roles open for a principal software engineer:

We're looking for a Principal Software Engineer to join as a founding engineer. You'll work directly with the founders to build the core of our agent security runtime. This is a high-autonomy role - you'll shape architecture, engage with early customers, and make the trade-offs that define the product.

You will build the layer between agentic reasoning and system execution — intercepting, classifying, and validating every agent intent against security policy before it runs. Design systems that capture and cryptographically verify every instruction and action, maintaining ground truth in environments prone to hallucination and injection. Architect fine-grained, time-scoped primitives that allow least-privilege permissions, with the ability to escalate under controlled, auditable conditions. Work with research to stress-test our security primitives at scale. Turn emerging threat vectors (prompt injection, tool misuse, privilege escalation) into adaptive defences.

https://www.alwaysfurther.ai/careers/principal-swe

Staff solutions engineer:

We're looking for a Solutions Engineer join as a founding engineer and to sit at the intersection of our open source community and our growing base of enterprise design partners. You'll spend your time contributing to Nono, helping shape its architecture, and working directly with customers who are integrating it into proof-of-concept and pilot programmes. This is a hands-on role - early on you'll be deep in the code, reviewing pull requests, triaging issues, and experimenting with deployment architectures, all while being a trusted technical voice for both community members and enterprise stakeholders. Over time, the role will evolve toward solutions architecture and customer-facing engagement, as you build the domain expertise and relationships that make you the go-to person for designing how Nono fits into complex enterprise environments.

What You'll Do" Contribute directly to the Nono open source project - code, documentation, and architectural proposals. Experiment with different deployment architectures for Nono across cloud environments, on-premise infrastructure, and hybrid setups and share your findings with others at Always Further, and often with the community, via our blogging platforms or YouTube channel. Work closely with early design partners to integrate Nono into proof-of-concept and pilot programmes, gathering feedback and translating it into engineering priorities. Produce technical content - blog posts, architecture guides, demos.

  • JavaScript
  • TypeScript
  • Node.js
  • PostgreSQL
  • Next.js
  • GCP
  • Full-time

Scorecard AI | Founding Engineer | San Francisco (Onsite) | Full-Time | https://scorecard.io

Scorecard builds simulation environments and reward models that frontier AI labs and enterprises use to train and evaluate their agents. Same discipline that made self-driving cars work, applied to LLM-based agents.

Our founding team built simulation infrastructure at Waymo, SpaceX, and Uber ATG. I'm Dare, the CEO and scaled Waymo's simulation org to 200+ engineers. We're ~7 people, 7-figure revenue, $3.75M seed led by Kindred Ventures with angels from OpenAI, Apple, Waymo, Uber, Perplexity, and Meta.

Founding Engineer ($175K-$280K + strong equity). Primarily backend. You'll own technical domains end-to-end. We use agentic tooling (Claude Code) heavily. Moving fast and working customers matters more than deep expertise in any one language.

Stack: TypeScript, Node.js, Next.js, PostgreSQL, ClickHouse, Temporal, GCP.

jobs@scorecard.io

  • JavaScript
  • TypeScript
  • Astro
  • Next.js
  • React

HIFI Labs (https://hifilabs.co) | Remote (US) | Senior Fullstack Engineer / Engineering Manager

Join HIFI Labs and work on innovative projects with well known and iconic musicians. Past artist activations include Bruno Mars, Linkin Park, Jisoo / Zayn,Rüfüs Du Sol, Dua Lipa, and Mike Shinoda. We're looking for a Senior Fullstack Engineer passionate about design, user interactions, and privacy.

You'll work with TypeScript, React/Next.js, Firebase and explore new frameworks like Astro. Experience with Styled Components, continuous deployment and devops is a plus. We also play around with React Native / Expo.

Sound like a fit? Email us at pierre at hifilabs dot co

  • Full-time

Springcraft | Hardware & Software Engineers | ONSITE (Palo Alto, CA) | Full-Time | $120K–$190K

Help shape the future of robotics.

I'm Tom, co-founder at Springcraft. We're building the open, full-stack platform for robotics — hardware, developer tools, and AI models so builders can create machines that sense, understand, and act in the real world.

We're hiring for five founding engineering roles:

- Mechanical Engineer - Electrical Engineer - Mechatronics Engineer - Robotics AI Engineer - Software Engineer

Apply: https://www.springcraft.ai/careers/?utm_source=hackernews&ut...

  • Python
  • Django
  • PostgreSQL
  • Nuxt
  • Vue
  • Full-time

Baserow | Product Engineer | REMOTE (Europe) | Full-time

Baserow is an open-source no-code platform for databases, applications, automations. We’re a remote team across 12 countries. We’re hiring a Product Engineer to work end-to-end across the stack.

- Product ownership from idea to launch

- Full-stack work across backend and frontend

- Open-source product

- Remote-first, high-autonomy team

- Stack: PostgreSQL, Python/Django, Vue/Nuxt

https://baserow.io/jobs/product-engineer

Hyperspell | YC F25 | San Francisco, ONSITE | $150k-220k + generous equity and benefits | hyperspell.com

I'm Manu, founder of Hyperspell. 14 Years ago I found my first job in tech through Who's Hiring. I take this job board seriously :)

Hyperspell is building Context & Memory for AI agents. We're at the intersection of "future of AI and agentic computing" and "this actually works". We're not just changing how our customers use AI in their products, but are constantly iterating on how we use AI to build Hyperspell, and what it means to be a software company in the decades to come.

We're hiring Forward-deployed (customer success), AI, and Platform Engineers: https://jobs.ashbyhq.com/hyperspell

Comment or reach out to founders@hyperspell.com with any questions!

  • Full-time

PostHog | Full-Time | Product engineers, backend engineers, Technical AMs, sales leader | REMOTE (all remote) | Hiring GMT-8 to GMT+2

PostHog makes dev tools that help product engineers build successful products.

* we have a public handbook (posthog.com/handbook) if you want to learn how we work, pay and more in complete detail.

* we are growing through more autonomy and transparency not through process.

* we have a ton of scale and a bunch of super interesting technical problems to solve

* we're building 20 more products over the next couple of years, so you could end up building one of those

* public compensation calculator! see immediately what you'd get paid

* we're hiring: product engineers, clickhouse operations engineer, backend engineers, product managers, technical account managers and technical customer success managers.

https://posthog.com/careers

Posted 14 days ago by timgl

  • Full-time

Red Balloon Security | Security Researchers, Software Engineers | NYC, Northern Virginia | ONSITE, HYBRID | Full-time, Interns (paid) | US Citizenship Required | https://redballoonsecurity.com

We are a team of expert researchers and engineers focused on securing embedded devices. We work with partners across critical industries, and on government-funded research programs (think DARPA). "Full-stack" for us doesn't just stop at back end code; it means being comfortable with operating systems, firmware, and signals going over the wire. You'll succeed here if you are a quick learner who loves working independently on tough, technical problems nobody has ever solved before.

Day-to-day tasks might include:

* Tearing apart a device in our lab, reverse engineering its firmware, and finding security vulnerabilities

* Developing an automated, robotic platform for hardware reverse engineering (custom hardware, vision models, user interfaces, etc.)

* Hooking and patching RTOS kernel functions to execute defensive device integrity validation code, without violating real-time requirements

* Building scalable servers for processing millions of device telemetry messages across thousands of concurrent connections

* Maintaining open-source reverse engineering tools (like OFRAK https://ofrak.com) and cooking up fun demos for hacker conferences (like this web game we built for DEF CON in 2023 https://ofrak.com/tetris/)

Our main office is in Manhattan, but we are building out a new office in Northern Virginia. US citizenship required. Bonus points if you have an active security clearance, or are willing to get one.

https://www.linkedin.com/jobs/view/4367488549

  • Rust
  • Linux
  • Full-time

yeet | Chicago, IL / Remote | Full-Time

Building a dynamic runtime on top of the Linux BPF sub-system. Looking for extremely talented / passionate Rust developers / Backend Engineers with a deep interest in Linux internals, Distributed Systems, Dev Tools, Great Developer Experiences and Systems programming.

Experience working with distributed systems AND / OR writing highly-concurrent, performant multi-threaded Rust is a must.

Feel free to tell us all about your favorite GNU core utilities / Linux system calls / kernel sub-systems at: work [at] yeet.cx

You can visit us at https://yeet.cx/

Or try our interactive sandbox at https://yeet.cx/play

For more jobs check out https://yeet.cx/careers

Posted 14 days ago by r3tr0

  • JavaScript
  • Python
  • Ruby
  • TypeScript
  • Node.js
  • React
  • Full-time

Goody | Remote | $150–250K + equity and benefits | US and Canada | Full-time

I'm Mark, the technical co-founder and CTO at Goody. We're building a gifting product that every business can use to recognize employees, retain customers, and accelerate sales. Despite being something everyone does, gifting is one of the areas of commerce yet to be disrupted, and we're working on building the best and most delightful product in this space.

Our product is used by Google, Stripe, Anthropic, Meta, NBCUniversal, Notion, and others, and we also offer a developer API for commerce. Tech stack is Ruby + React + TypeScript, though we're flexible on backend language if you know Python or Node.js better. All roles are full-stack.

We're coming off of a big year and planning for scale in 2026 with openings in our engineering team.

• Staff Software Engineer ($200–250K) — for those who ship at a startup pace and have a great eye for detail

• Senior Software Engineer, Customer Engineering ($150–200K) — if you like to hear a customer request in the morning and tell them it’s shipped in the afternoon

• Senior Software Engineer, Growth ($150–200K) — be the engineer who has the most direct impact on our growth

We're looking for people who have great startup energy, want to win, and bring great vibes to our tight-knit team.

https://jobs.ongoody.com/#hn

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 150 over the last two years.

Full-Stack Engineers | $130k - $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.

LLM Applications Engineers | $130k - $220k + Equity

---> Uncountable is looking for LLM applications engineers who can push the Uncountable data model forward through LLM-native UI's and application extensions.

--> 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

  • React
  • Full-time

Verkada | Frontend Engineer | ONSITE Full-Time San Mateo CA

I'm Kris, a manager on Access Control at Verkada.

Access Control is a core product at Verkada. We build the systems that power how customers secure and manage their offices, schools, and campuses. Our software unlocks nearly 8 million doors every day. These are mission-critical systems, not internal tools, and reliability and usability matter a lot.

My frontend team builds more than small widgets or forms. We design and deliver entire workflows that bring clarity to complex systems - managing doors, groups, schedules, users - all within a unified, elegant interface. This means working closely with world-class designers (and debating them when needed), but also having the vision and technical depth to lead when design resources are scarce.

I'm looking for a React expert who can bridge craft and leadership: - Lead technically within the frontend team, setting patterns and guiding others. - Collaborate deeply with our web infrastructure and component library teams to shape the building blocks of our platform. - Champion UX - because building secure, intuitive experiences at global scale is as much about design empathy as it is about React/Redux mastery.

This is a team for engineers who want real ownership, visible impact, and problems rooted in production reality. Verkada is pre-IPO with a $5.8B valuation, and the entire engineering org is about 350 people, which keeps scope high and teams relatively autonomous.

Job description: https://job-boards.greenhouse.io/verkada/jobs/5070042007

Email me: kris.linquist at verkada.com

  • Python
  • PostgreSQL
  • Redis

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... — We also recently passed over a billion sandboxes created and on our way to 2B soon.

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 to be considered. 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

Fractional AI | Staff/Principal Software Engineer | SF, NY, NC, Dubai | Onsite

We’re a team of experienced generalist SWEs and AI enthusiasts who are building custom AI agents for enterprise clients. No AI experience required: we are actively trying to be the best place in the world to learn applied AI.

I’m Frank, an engineer here. This is the first services-style company I’ve worked at, so for those of you in a similar boat, this is what I’ve really liked so far:

* The learning rate is super fast. 3-4 client projects a year, each with different tech stacks, products, industries, and architectures. Lots of learning resources including a full AI engineering bootcamp when you onboard.

* Our projects are typically high priority and sponsored by prominent executives. The path here for projects to have real impact on usage or bottom line is much shorter.

* We’re “selling pickaxes during the gold rush”. When AI finds its next killer app, we’ll be the first to know about it.

We’re hiring staff+ SWEs onsite with offices in San Francisco, New York, Durham NC, and Dubai. Feel free to reach out to me directly (frank@fractional.ai) or take a look at the full job posting:

https://jobs.ashbyhq.com/fractional-ai/1db16198-e91e-425d-83...

  • JavaScript
  • TypeScript
  • GraphQL
  • Node.js
  • PostgreSQL
  • Redis
  • React

Ashby | YC 19 | REMOTE | Hiring Product Engineers | Sr: $153k-$220k, Staff: $190k-$275k

Ashby is the all-in-one recruiting platform powering hiring at the world’s most innovative companies. If you cmd+f “Ashby” you’ll see that we’re powering many of job postings in this thread!

* Grew our engineering team from 30 -> 60 last year with plans to double again in 2026.

* 80%+ of our engineering team is made up of Senior-Staff+ level Product Engineers. We give an unusual amount of ownership to our engineers to build features end-to-end. Many of our most loved features were build entirely by a single engineer!

* 100% remote asynchronous culture with an even distribution of engineers across North America and Europe

* Full transparency on engineering levels + comp: https://www.ashbyhq.com/blog/engineering/leveling-and-compen...

Stack: TypeScript (frontend & backend), React, GraphQL API, Node.js, Postgres, Redis.

Full list of open roles: https://www.ashbyhq.com/careers