Stytch | Various roles | San Francisco, CA ONSITE/HYBRID | https://stytch.com

Stytch helps developers protect their applications and make authentication that's simple and scalable, so that teams can stay focused on building differentiated products. That's various forms of signup/login flows, SSO and multi-tenant organization needs, integrated bot detection and fraud prevention, and more.

Beyond core authentication for humans, I'm also excited about our work in auth for AI: making it easy for companies to serve AI agents, and for AI agent developers to securely get things done. Stytch Connected Apps makes it easy to authenticate AI agents, and IsAgent and Device Fingerprinting help companies understand and control their AI traffic.

Personally, I enjoy working on interesting things, with the ability to make customer impact, and with great people. If you do too, consider joining us.

We are hiring for Software Engineer, DevRel/Marketing Engineer, Product Designer, and Solutions Engineer roles.

Apply here: https://jobs.ashbyhq.com/stytch

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MONUMENTAL | https://www.monumental.co/ | Amsterdam, The Netherlands | Full Time | Onsite

We make robots that autonomously construct buildings. We are currently developing and manufacturing our autonomous bricklaying system in the beautiful centre of Amsterdam. And our robots are already earning real revenue operating on construction sites all over the Netherlands.

We're looking for experienced FULL-STACK ENGINEERS who can help us solve problems like:

- Data sync and analytics queries across a fleet of robots (that can be offline for hours at a time)

- Rapid deployment and iteration of experimental software changes across firmware, control software and UI

- Modelling buildings in code and finding the right UI for operators to edit them

Check out the progress we've already made on Atrium, our operating system for robotics: https://www.monumental.co/atrium

We're rapidly scaling up operations and we need experienced, generalist engineers who can build the systems that manage all of that complexity. If you think that 'full-stack' could reasonably mean debugging firmware, mixing buckets of mortar _and_ writing React components, we are looking for you. Robotics experience not required!

https://www.monumental.co/jobs

DuckDuckGo | Multiple Roles | Remote | Full-time | $178,500 - $320,000 USD + equity

We are looking for candidates that are excited to join us on a mission to raise the standard of trust online. All of our roles are fully-remote, except where specific locations are noted.

Most of the software engineering positions have been repeating here for years because we've been continually hiring for them, scaling our whole team to now over 300 people—many of those hires have come through Hacker News. We've been improving our hiring process over time, and we know some good candidates may have fallen through the cracks. Some people who tried in the past have had success going through it again, and we still pay for hiring projects.

Senior Site Reliability Engineer - $178,500 USD + equity — https://jobs.ashbyhq.com/duck-duck-go/9f845ea5-4bdd-432a-826...

Engineering Director, Windows - $243,800 USD + equity https://jobs.ashbyhq.com/duck-duck-go/42272bd1-c863-478d-827...

Engineering Director, Web Platform - $243,800 USD + equity https://jobs.ashbyhq.com/duck-duck-go/0541f1f3-4302-4b76-93a...

Engineering Director, Browser Platform - $243,800 USD + equity https://jobs.ashbyhq.com/duck-duck-go/0541f1f3-4302-4b76-93a...

Senior Software Engineer, Windows Desktop App - $178,500 USD + equity — https://jobs.ashbyhq.com/duck-duck-go/47e569c6-f995-4955-a89...

Senior Backend Engineer - $178,500 USD + equity https://jobs.ashbyhq.com/duck-duck-go/abb953ee-5bb7-4637-9f6...

Senior Business Development Manager - $200,267 USD + equity https://jobs.ashbyhq.com/duck-duck-go/6a4caa8b-825c-44e3-be3...

VP, Business Development - $320,000 USD + equity https://jobs.ashbyhq.com/duck-duck-go/276ae352-55b5-4fb2-9b9...

https://duckduckgo.com/careers

QuestDB | C++/Rust Database Engineer | REMOTE| | Full-time | https://www.questdb.com

Work with world-class engineers - including two teammates who placed in the top 10 of the One Billion Row Challenge (1BRC).

As a specialized database, QuestDB stores, processes and analyzes time series data in real-time, with a focus on reliability, extreme performance and simplicity. It provides best-in-class hardware efficiency and robust features, saving costs and accelerating time-to-value.

Our open source repository has gathered 16k stars and QuestDB is one of the fastest growing database in the category. We are a product-first company with a large community of developers. As a team, we are globally distributed, remote-first and backed by leading venture capital firms and Y Combinator.

Teams have had success with QuestDB across a wide range of industries, such as Financial Services, Energy and Space Exploration. Category leading companies such as OKX, Mizuho, and Airbus rely on QuestDB for large-scale, data-intensive production systems. Emerging and disruptive startups also leverage QuestDB to gain a significant edge within traditional industries.

To apply: https://questdb.com/careers/core-database-engineer/

TestDriver.ai | https://testdriver.ai | QA, Engineers, Customer Support | Austin / Remote | Full-time / Part Time 95% of companies are still wasting time manually testing due to shortcomings in Playwright, Cypress, and other frameworks. Developers rank testing as the #1 blocker to release. We've built an AI Agent that performs manual testing on it's own VM with complete desktop access. It works like a specialized "Claude Computer Use."

We're scaling our early sales and seeking QA engineers, customer support, and sales engineers.

Please DM Email is hidden

ARound (web-based augmented reality for sports) https://aroundar.com - a Stagwell company - https://www.stagwellglobal.com | Backend Engineer | Remote (Based in UTC -8/-7/-6/-5/-4 timezones only) | 20-40 hours a week TBD | Contract or contract-to-hire

Backend development in support of web-based augmented reality experiences and games for mobile devices. API integration and development. Management of cloud infrastructure and services.

Key technologies are Node.js, Rust, PostgreSQL, Digital Ocean. Experience with video streaming (RTMP, WebRTC). Some degree of familiarity with TypeScript, Vue.js, and Babylon.js is desirable.

Strong interest in sports is ideal (although fandom is optional).

I’m the hiring manager, no intermediaries. I’m not interested in hearing from outsourcing agencies or recruiters. Candidates only, please. Thank you. : )

Email is hidden

Promptwatch | Amsterdam, Netherlands | HYBRID/REMOTE (CET +/- 2h) | Full-time | https://promptwatch.com

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We’re helping companies rank and be visible in AI search /ChatGPT, Google AI mode etc. (GEO) and hiring a Senior Full-Stack Developer.

Work: Own app layer, real-time APIs & queues; ship end-to-end.

Stack: TypeScript, React 19/Next.js, Node/Fastify, tRPC, Postgres, GCP Nice to haves: ClickHouse, Elasticsearch.

You: 8–9 YOE, strong TS/React/Node.

Comp: €65k–€110k + equity.

Apply: https://promptwatch.com/careers/full-stack-developer (mention “HN: Full-Stack Developer”).

Valantor | US Hybrid / Remote | Full Time | Python Agent Engineer https://www.joinvalantor.com/agent-engineer

As an Agent Engineer at Valantor, you’ll work hand-in-hand with our customers to design and deploy intelligent agents that solve their most pressing document challenges.

This role is deeply collaborative and applied—you’ll be in the room with clients, understanding their workflows, and translating their needs into working AI solutions. It’s an opportunity to combine technical expertise in Python and prompt design with direct customer engagement, bringing the most advanced AI for unstructured documents into live production environments.

About Us

Valantor is a full-stack AI + humans platform purpose-built for the BPO industry. We’re tackling the hardest problems in document processing—insurance claims, contracts, invoices, and other unstructured files—where today armies of humans still do the work.

Our proprietary AI technology has been in development for more than six years, and we were among the first beta users of OpenAI in 2021, giving us a head start in applying frontier AI to real-world enterprise problems.

Our leadership team has built and exited multiple companies in BPO and enterprise software, with a track record of selling billions in solutions globally.

We’ve raised significant capital, completed multiple strategic acquisitions, and are already generating tens of millions in revenue. It’s a unique chance to help shape a company that blends startup energy with enterprise scale, backed by veteran operators with deep vertical expertise.

CampusOptics | Product Engineer | Hybrid ~2x/wk | Austin, TX | Full-Time

CampusOptics is an environmental health and safety platform for universities. We're hitting product market fit, quickly adding customers, and looking to add another product engineer to our engineering team of 5.

Most importantly, you're excited to work in a close-knit team to build features without bureaucracy and make a big impact in our Rails/Hotwire application. And you'll influence a product that makes a material impact on campus safety. The ideal candidate would have UI/UX/product sensibilities, and we're open to all levels of seniortiy.

I'm a founder, the CTO, and the hiring manager for this role. I got my professional start on "Who's Hiring March 2011", so I'm partial to candidates from here :)

You can see more details here: https://gist.github.com/jpcody/82f33ff98afedaca7018082933019...

To apply, I'd love to hear why you think you'd be a good fit and what excites you about the role at Email is hidden.