Posted by whoishiring 18 hours ago
Ask HN: Who is hiring? (July 2026)
Please only post if you personally are part of the hiring company—no recruiting firms or job boards. One post per company. If it isn't a household name, explain what your company does.
Please only post if you are actively filling a position and are committed to replying to applicants.
Commenters: please don't reply to job posts to complain about something. It's off topic here.
Readers: please only email if you are personally interested in the job.
Searchers: try https://nthesis.ai/public/hn-who-is-hiring, https://dheerajck.github.io/hnwhoishiring/, http://nchelluri.github.io/hnjobs/, https://hnjobs.emilburzo.com.
Don't miss this other fine thread: Who wants to be hired? https://news.ycombinator.com/item?id=48747975
Sequent builds cryptographically secure online voting infrastructure used in 200+ real elections across multiple countries. We're a fully remote team working on an open-source platform combining Rust, TypeScript, and modern DevOps. We handle End-to-end encrypted voting, cryptographic mixnets, and tamper-evident logging.
Tech Stack: Rust, TypeScript/React, WebAssembly, GraphQL, PostgreSQL, Keycloak
Open Roles:
Senior Fullstack Engineer (Rust + TypeScript/React)
Reach out: team@sequentech.io
Do you want to help scientists, doctors, and historians discover breakthroughs? Join our small, fully-distributed software development team to help connect scholars of all disciplines with peer-reviewed journal articles.
Our company has been remote-first since we began in 2011. You’ll join a team with plenty of experience putting into practice what works well remotely, and avoiding what doesn’t.
We've never taken VC money, and we’ve never had layoffs.
Third Iron software is used by researchers at over 2,000 organizations, including universities, hospitals, corporations, and government agencies, located in over 35 countries.
In a refreshing change from advertising-dependent tech companies and those who sell user data, we instead have a straightforward business-to-business model. We sell our subscription-based services to libraries, and anyone affiliated with one of these libraries can use our software. We do not sell user data. Our focus is on building the best software to enable research that changes the world.
### Senior Quality Engineer ###
We’re looking for a Senior Quality Engineer who wants to help us define and continually refine the quality aspects of our software lifecycle, create automated tests, and monitor our quality metrics to ensure we're providing researchers and librarians with a great experience.
Ideally you have many years of quality experience in an agile environment, either as a Software Development Engineer in Test (SDET), Release Engineer, or Quality Assurance (QA) role involving web technologies. We care more about the quality of your work than the numbers of years
Playwright and/or Cypress experience is a big positive. We primarily create web apps, and we also have a popular browser extension, along with all the backend APIs and systems that support our many customer use cases.
Interest in working with our top-notch customer support team, release management, accessibility testing, or load testing are all nice extras, too.
If you’re interested in this fully remote position, we're interested to chat with you! Please apply at https://thirdiron.applytojob.com/apply/GRI2SRUc23/Senior-Qua...
What’s exciting about this specific role & company right now? We partner with major health plans to make homes safer and more accessible for older adults and high-needs populations. By combining technology with a network of clinicians and installers, we deliver personalized home modifications nationwide. We’re fast-growing and backed by incredible investors like Valtruis and The Home Depot. As an engineer here, you’ll be solving complex data and scaling challenges that directly improve patient outcomes. We operate with high autonomy and a modern stack, giving you the room to ship meaningful code.
Stack: React and TypeScript on the front end and Ruby on Rails on the back end
Spruce lets users control their data across the web. Instead of users logging into platforms, we believe platforms should request to access data vaults controlled by users.
The demand for trusted digital ID is accelerating as AI deepfakes begin to destroy most of the ways we use to verify identity today. How private or secure is it to hold your driver's license or passport up to a webcam to get a bank account? Was it ever private or secure? Stable diffusion can break so much of this already. Society will need trusted digital IDs and credentials. Our mission is to allow them to be controlled by individuals, with safeguards to prevent descents into surveillance states and checkpoint societies.
We are the main implementers of category-defining initiatives such as the digital ID program for the California DMV, and the verifiable digital credentials program in Utah. We are private sector participants in NIST's National Cyber Security of Excellence initiative for privacy-preserving digital ID.
We are hiring skilled engineers who care about making a real impact in improving public services, digital autonomy, and user privacy for the world. We work closely with public sector agencies, and have high regard for public servants. We have a strong engineering and customer-oriented culture, and are not simply a SaaS product or AI wrapper. Our roles are not for the faint of heart: you will be expected to work hard and learn a lot in this role.
Our engineers are ambitious to get outcomes for our customers and their constituents. On any given day, they may write great Rust/C#/TypeScript, deal with mainframe dumps, read policy documents, respond to technical RFIs/RFPs, manage on-prem environments, implement new NFC + Bluetooth protocols in Swift/Kotlin, create CI/CD processes that enforce W3C accessibility guidelines and i18n requirements, rewrite lost specs from disassembled binaries, figure out stablecoin payments, and design new protections for public key infrastructure. It is a team effort, and people with T-shirt shaped skills are able to collaborate and learn a ton from each other every day.
We are interested in candidates who want to be proud of the meaningful impact they make for society, even if it takes time to get right. This is not the right job for someone who wants to "join a cool new AI startup" that implodes or exits in under a year.
See our roles here: https://jobs.ashbyhq.com/spruceid
WireScreen is a fast-growing Sequoia-backed Series A startup building the go-to open source intelligence platform for navigating global supply chains and China-related risk. While China maintains some of the world’s most detailed corporate ownership records, the real challenge is connecting the dots. That’s where we come in: surfacing the networks, relationships, and financial ties behind companies to support national security, compliance, and regulatory oversight.
We’re looking for senior software engineers on the frontend to help build the future of our platform: transitioning us to a component-based system all the way through to building beautiful pages that visualize the story of ownership, power, and influence in the Chinese corporate world.
For the frontend we’re looking for significant React experience as well as experience with at least one React framework, plus prior experience building or contributing to a component-based design system & data viz work. At least 5 years experience with 8+ being a more likely level for this person.
We’re also looking for a machine learning engineers to level up our entity resolution algorithms and expand our use of LLM technology - for that role we’re looking for 4 years experience with training and deploying ML models in clustering problems, so either knowledge graphs, entity resolution, recommendation engines, cohort analysis or outlier/anomaly detection.
In both cases you’d join an awesome, tight-knit group of great people who are working on real-world problems with big impact.
Apply here (Frontend): https://jobs.ashbyhq.com/wirescreen/de6daaae-eb03-4551-809d-... Apply here (Machine Learning): https://jobs.ashbyhq.com/wirescreen/0a29bcab-59eb-4766-941b-...
Or you can reach out to me directly at leo.green@wirescreen.ai - I lead recruiting here at WireScreen, but if I don't know the answer I'll ping our engineering folks and come back to you fast.
PrairieLearn (https://www.prairielearn.com) is an open-source assessment platform used by universities across the US (Berkeley, Princeton, Michigan, Illinois, and others). We power mastery-based learning and large-scale exams.
We’re a small, profitable, early-stage company (bootstrapped, no VC) that is growing quickly. Our users love us and we have very high retention and rapid spread through word of mouth. As an early-stage hire, you’ll work across the stack and enjoy meaningful ownership from day one.
Tech we use: Node.js / TypeScript backend, Postgres, AWS, React. We’re also developing AI tooling, including LLM agents to help instructors create content, and vision-language models to help grade student work. PrairieLearn is open core: https://github.com/PrairieLearn/PrairieLearn
Details:
- Location: Remote (US only)
- Salary: $100k-$180k depending on experience
- Benefits: Stock options (0.5% - 1.5%), unlimited PTO, flexible hours
- Role: Full-time. (We’re not able to sponsor visas at this time.)
Apply at https://www.prairielearn.com/jobs-ashby?utm_source=YeEJ5MAKk...
For LLMs are you what modalities are you currently using? How good is the accuracy? Would be interested to learn more in an interview
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...
ABOUT FRACTILE Fractile was founded in 2022 on the bet that, eventually, the world’s most capable AI systems would be limited in their impact by the amount of time they take to produce useful outputs. We bet everything on the logical conclusion: that the only way to truly unlock this latent value, to make speed viable at scale, was to radically re-invent the hardware that we run our frontier AI models on. Ever since, we have been building chips and systems that tackle this problem: how to generate output at thousands of tokens per second, while handling the complexity and capacity challenges of operating large models at very long contexts.
We’ve recently raised $220M from Founders Fund and Accel and the most important work lies ahead. Come and join the mission!
THE ROLE As a Software Engineer you will be a core part of our technical team working alongside the hardware, software and research teams to solve cutting-edge problems in AI hardware, ranging from verification to simulation, alongside the best of the best (DeepMind, Apple, Meta…).
ABOUT YOU 1) You have exceptional ability. We look for pivotal IC contributions that solved the hardest problems in big tech companies or hedge funds; competitive hackathons, International Olympiad medals, or rank highly in other competitions like advent of code
2. You are a top engineer. We are not looking for specific languages or technologies - you will be a master of several, you excel at algorithmic skills and solving problems logically in any programming language. And you are very comfortable learning new skills on the fly. You like to work in Python and C++
3. It’s likely you have several years of professional experience, but we will make exceptions for the right candidate
4. You want to work with the best. And you are excited to work in chips, solving the hardest problems at the frontier of AI
WHAT WE OFFER 1. Competitive compensation and meaningful equity 2. A very cool office with London's best views 3. Private medical insurance and pension benefits
If this sounds like you, ping carmen@fractile.ai
ChainSecurity is a young and innovative cybersecurity company that operates in the blockchain and cryptocurrency space. Our mission is to make the blockchain space secure and trustworthy for people, companies, and governments alike. We are proud of our security experts from the renowned universities ETH Zurich, EPFL Lausanne and others.
We are trusted by 100+ blockchain companies and established corporations with security audits and services. We have secured complex systems for top blockchain clients, such as decentralized finance (DeFi) projects, and multinational organizations, such as banks and industrial consortia. A ChainSecurity Auditor will review the most complex blockchain projects to find vulnerabilities which no-one else can. By using state of the art tools, expert knowledge and a deep understanding of the fundamentals, we secure projects handling billions, often forming the foundation in the new paradigm of an open financial system.
Your Responsibilities:
* Work directly with the developers of the most successful teams in the blockchain industry to audit their code and secure their products
* Contribute to our security tools and create new ones in collaboration with our internal research team
* Conduct security research and publish your findings
Requirements:
* Strong background in software engineering, focused on security relevant areas and most importantly being able to reason about complex code
* Experience with penetration testing, vulnerability scanning, threat modeling or similar is a plus
* Good knowledge of cryptography
* Proficiency with Linux and Git
* Good written communication skills
* Fluent in OOP programming language
Bonus Points:
* Formal Verification, White Box, Vulnerability Scanning
* Solid Blockchain Knowledge
* Consensus Algorithms
Join us here: https://www.chainsecurity.com/jobs/blockchain-security-engin...
Questions about the role? Contact: jobs@chainsecurity.com
Opendate builds the ticketing platform powering independent music venues across North America.
We're looking for a senior engineer who is pushing the boundaries of AI-assisted software development.
Everyone says they use AI. We're looking for someone who has gone much further—someone who is constantly experimenting with new workflows, building agents, automating entire pieces of development, and rethinking what one engineer can accomplish.
Our engineering team believes AI is fundamentally changing what great engineering looks like. We want people who are helping define that future—not waiting for someone else to.
Our stack includes Ruby on Rails, React, PostgreSQL, AWS, Sidekiq, and Stripe, but we're far more interested in how you build than the specific technologies you've used.
If you're excited by questions like:
How can AI own an entire feature from design to deployment? What engineering work still requires humans, and what should be automated? How do we move dramatically faster while maintaining an exceptionally high bar for quality? What does an engineering organization look like when every engineer has AI teammates?
...you'll probably enjoy working with us.
If this resonates, we'd love to hear from you.
https://www.opendate.io/careers/senior-full-stack-software-e...