RevEng.AI | London, UK | Full-Time | ONSITE+PART REMOTE | https://reveng.ai

RevEng.AI is building foundational AI models to identify malicious threats and security vulnerabilities inside software. We're a seed stage startup having raised $4.25m from top tier VCs across the US and Europe. You’ll play a key role in advancing our platform pushing the boundaries of AI-driven program analysis.

We're looking to hire security engineers and security researchers with experience in program analysis, reverse engineering, vulnerability research, machine learning, and malware analysis.

* 5+ years of experience

* Masters or PhD in a relevant area for the security researcher role

* Hybrid working environment but ideally commutable to London, UK

* Solid understanding of software engineering design

* Ability to thrive in a fast-paced start-up environment

To apply or learn more, email Email is hidden with "hn" in the subject line.

Common Prefix | Software Engineers / Auditors | Greece | Remote | Full-time

Common Prefix is a science-first blockchain consulting company. Our vision is to make blockchains usable for mainstream users and everyday people – paying at the supermarket, remittances, moving money across borders, saving, investing – and solving the real problems of usability, scalability, and interoperability that come with it. We're a 30-person team, half scientists (cryptographer PhDs, post-docs, and professors) from renowned universities, half engineers with long web2 experience. A lot of our field is broken and we're trying to make a small contribution in fixing it, by introducing provable security and proper engineering practices across the board.

What we're looking for:

Software engineers who can solve problems, are smart, get things done, and enjoy working on the bleeding edge, learning about cryptography, and working from first-principles.

Auditors who can write and read code, especially low-level cryptographic implementation code (zero knowledge verifiers, signature schemes, etc), consensus (PoW, PoS), or smart contracts (everything DeFi).

Tech stack: Doesn't matter, we'll teach you. But we work mostly with Rust.

Open roles:

* Software Engineer, https://commonprefix.notion.site/sw-folk

* Auditor, https://commonprefix.notion.site/auditing-folk

We offer:

- $80,000–$160,000 / year cash - Local from Athens, Greece, or remote, preferably in Europe - Conference participation in exciting scientific and engineering venues, 2-3 times per year - The opportunity to work and learn from world-class scientists from major universities in the field of blockchains, cryptography, and consensus

If you're interested in joining our team, please reach out to careers<at>commonprefix<dot>com with the subject line "HN: <Job Title>".

Stellar Science | Hybrid (USA) Albuquerque NM, Washington DC (Tysons VA), Dayton OH | Full time, interns/co-ops | U.S. citizenship required | https://www.stellarscience.com

Company: We're a small scientific software development company that develops custom scientific and engineering analysis applications in domains including: space situational awareness (monitoring the locations, health and status of on-orbit satellites), image simulation, high power microwave systems, modeling and simulation, laser systems modeling, AI/ML including physics-informed neural networks (PINN), human body thermoregulation, computer vision and image processing, high performance computing (HPC), computer aided design (CAD), and more. All exciting applications and no CRUD. We emphasize high quality code and lightweight processes that free software engineers to be productive.

Experience: Other than interns, we currently require a Bachelors degree in physics, engineering, math, computer science, or a related field, plus preferably 3+ years of work experience or a Masters or PhD in lieu of work experience. (Roughly 30% of our staff have PhDs.)

Technologies: Mostly C++23, Qt 6.9, CMake, git, OpenGL, CUDA, Boost, Jenkins. Windows and Linux, msvc/gcc/clang/clangcl. AI/ML and other projects use Python, some projects use Java or Javascript/Typescript/React.

Apply online at https://www.stellarscience.com/careers/.

Railway | Infra eng - Storage, Infra (Platform) eng, Product Eng (full stack)| REMOTE (Worldwide) | https://jobs.ashbyhq.com/railway?utm_source=daymzwzj0p

Tired of trying to beat kube into shape? Does writing YAML to ship code fill you with utter dread? Dream of a future where deploying software is simple, and you don't need an army of infrastructure engineers to build that perfect janky bash script™ to make life easy?

We're Railway, and we think infrastructure can be better. So far we've built out a platform loved by hundreds of thousands of users who simply tell us "Give me Postgres", "Deploy this repo", and we make it happen

Fair warning! The problems are complex: home-rolled hypervisors, cut-above container orchestration, over/under/whateverlay networks, virtio device drivers, edge proxies, IAM that doesn't suck, kitchen sinks - we need to build it and we're looking for likeminded individuals who think this stuff is fun.

Three open roles (apply below!):

+Infra Engineer - Storage: Apply here: (https://jobs.ashbyhq.com/railway/25d8444a-47dc-4084-ae56-29a...) Blog post about the team: (https://blog.railway.com/p/data-center-build-part-one)

+Infrastructure Engineer(Platform): -Apply here:(https://jobs.ashbyhq.com/railway/b8072f95-043f-404d-a313-f0b...) -Blog post about the team: (https://blog.railway.app/p/team-spotlight-infrastructure-eng...)

+Product Engineer (full-stack): -Apply here: (https://jobs.ashbyhq.com/railway/6ddcfe47-6cce-469b-ba6d-4f0...) -Blog post about the team: (https://blog.railway.app/p/team-spotlight-product-engineerin...)

See you soon, and happy shipping.

Langdock (YC S23) | Product Engineers (Full-stack), Infrastructure Engineers, AI Associates | Berlin, Germany ONSITE | https://langdock.com

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We're Langdock, and we've built the LLM platform that 1,300+ companies trust to power AI features for 100,000+ users. After hitting $9M ARR with 10x year-over-year growth, we're expanding our Berlin team to shape the next chapter of conversational AI.

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Product Engineer (Full-stack) | €66K – €102K | Equity | €10K – €30K Bonus

Build product features from conception to deployment, collaborating closely with our CPO and working across the entire tech stack to deliver AI-powered features that drive enterprise adoption.

Stack: NextJS, React, Prisma, Postgres, Redis

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Infrastructure Engineer | €66K – €102K | Equity | €10K – €30K Bonus

Contribute to our deployment infrastructure and lead integrations with customer cloud environments. You’ll work hands-on with the latest cloud and container technologies, ensuring our platform runs reliably and securely for some of Europe’s top enterprises

Stack: Terraform, Azure, AWS, GCP, OpenShift

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AI Associate | €66K – €75K | Equity | €10K – €15K Bonus

Three-month rotational program with a pathway to high-impact commercial roles. You’ll join a cohort of technical, customer-facing talent who build deep product expertise and commercial acumen from day one.

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Check out our jobs page here: https://jobs.ashbyhq.com/langdock

40GRID - Full-time Remote | Senior React Native Mobile | Senior Python Django Our mission is to empower field-service companies to grow by modernizing and automating their business operations. Every company we work with has unrealized potentials — our task is to build the platform that empowers growth and helps them unlock opportunities.

Email: Email is hidden (no recruiters or agencies, please put HN in subject line, thanks).

Tech: React Native

AllSpice | https://allspice.io/ | Boston, MA / SF Hybrid or Remote | Full time (US timezones) | Mid/Sr./Principal/Staff | Golang, Vuejs, Rust

At AllSpice, we're building the future of hardware development and collaboration, applying modern software design principles to the hardware industry with design review, automated test, and Gen AI (think GitHub/Bitbucket for hardware). AllSpice is unlocking the next generation of smart vehicles, IOT devices, rockets, medical devices, robotics, and much more.

Read more about our latest Series A announcement in TechCrunch (https://techcrunch.com/2025/06/23/allspices-platform-is-the-...)!

We have a highly capable, tight-knit, remote-first team with a flex office in Somerville, MA and SF. We strongly value continuous communication and personal development. See more on our careers page https://allspice.io/careers

We’re hiring primarily for:

Sr./Principal Product Manager (Platform) - You'll lead our core product platform user experience, with new ECAD file integrations, collaboration features, and improved onboarding experience for git. You should have some experience in the hardware design process and git. https://jobs.ashbyhq.com/allspice/4d547ef4-e8c5-47c1-861d-15...

Sr./Principal Product Manager (Actions) - You'll lead Actions, our "dev-ops-for-hardware" product, improving the user experience for building automations for circuit designs, like BOM generation, linting (DFM, DVT), document generation (eg. https://github.com/wireviz/wireviz). You must have some experience in the hardware design process and git. https://jobs.ashbyhq.com/allspice/a52f87af-71e3-474c-9841-b6...

Sr/Principal SW parsing (rust) - Systems programming experience required. You'll be responsible for helping develop our ECAD schema and convert between file formats efficiently. This role can flex to be pretty senior if you have more experience than is listed. https://jobs.ashbyhq.com/allspice/5c889644-642a-468e-8289-3f...

Lead/Principal Infrastructure Engineer - You are passionate about optimizing infrastructure at scale and have a strong background in security engineering, terraform, ansible, AWS, linux system administration, and infrastructure automation. In this role, you will be responsible for working with company leadership to build our infrastructure roadmap and team, as well as executing tasks (80/20 individual contributor work to management, with greater management opportunity available as the team grows). https://jobs.ashbyhq.com/allspice/99ded9f3-4de0-420e-bedb-50...

Tech Stack: Docker, Terraform, GoLang, Rust, Python, Vue, Typescript

Please include any relevant open-source projects or portfolio in your application.

Never hear anything from Brilliant, applied multiple times. Don't even know if someone (A.I) is even reading it.

RentSpree | $185k-265k | Hybrid 2x/week | Seattle | Full-Stack / Frontend | Full-time

RentSpree is a series B startup simplifying every step of the rental process—from applications and tenant screening to payments and lease management. Our mission is to create a seamless, transparent experience that saves time, boosts earnings, and builds trust between agents, landlords, and renters.

I'm the hiring manager for most of these roles. Come help us build greenfield products for agents and for our embedded finance platform for rental property owners.

Staff Software Engineer, $200k-220k base, https://ats.rippling.com/rentspree/jobs/4ae81c52-a5f0-4096-8...

Senior Software Engineer (Frontend/full-stack), $185k-205k base https://ats.rippling.com/rentspree/jobs/1051b7fc-6e82-4d8b-b...

Senior Engineering Manager, 230k-265k base, https://ats.rippling.com/rentspree/jobs/970fea74-c6b5-485a-9...

We're in downtown Seattle and are typically in the office twice a week, and still flexible on top of that. We typically use node, TypeScript, React, Mongo, and Kotlin.

Oneleet (YC S22) | Multiple Roles | US & NATO Countries | Remote | Full-time

Oneleet is an all-in-one cybersecurity startup that has built its own Attack Surface Monitoring (ASM), Code Scanner, Device Monitoring, and Compliance Platform. We are growing at an unprecedented pace and working on some very exciting projects.

What we're looking for:

Strong problem solvers who can work independently in a remote environment - Security-minded professionals passionate about building robust, scalable systems - Comfortable working during Eastern Time

Tech stack: Go, TypeScript, React, Kubernetes

Open roles:

* Software Engineer, Backend

* Software Engineer, Cloud Security Posture Management

* Application Software Engineer, Endpoint Security

* Security Program Manager (EU Timezone)

* Technical Sales (must have background in Computer Science or Cybersecurity)

* Invoicing Coordinator

We offer:

- Competitive salary - Equity in a fast growing cybersecurity startup - 100% remote work - Company offsites every quarter (past offsites have been in The Netherlands and Italy)

If you're interested in joining our team, please reach out to samuel<at>oneleet<dot>com with the subject line "HN: <Job Title>".

Alternatively, you can also apply at https://www.ycombinator.com/companies/oneleet/jobs