Link11 | QA Engineer | Remote (EU time zone) | Full-time | https://www.link11.com

As one of our QA Engineers, you'll be the guardian of product excellence - thinking like a hacker, testing like a detective, and ensuring our complex systems work flawlessly in the wild. You'll go beyond finding bugs to anticipating the unexpected: edge cases, weird component interactions, and those "no user would ever do this... but what if?" scenarios that separate good products from great ones.

What You'll Own:

* Design battle-tested strategies that catch issues before customers do

* Build automated test suites that scale with our ambitions

* Hunt down bugs across complex component interactions and configurations

* Partner with dev teams to ship quality at speed

* Be the voice of risk assessment when it matters most

You Should Have:

* Critical thinking that connects dots others miss

* Deep web tech knowledge (HTTP/HTTPS, DNS, SSL/TLS, CDN)

* Automation chops (Python, JavaScript, Bash)

* Experience with test methodologies and writing bulletproof test cases

* Debugging skills that turn logs into insights

* Communication skills that turn complex issues into clear actions

Why Join?

You'll be testing cybersecurity products that defend critical infrastructure against DDoS attacks – a single bug could mean the difference between stopping an attack in <10 seconds or watching a bank, power grid, or hospital go offline. This isn't just QA – it's cyber defense at the highest level.

If breaking unbreakable systems and ensuring bulletproof security for critical infrastructure sounds like your kind of challenge, come lead, code, and conquer with us: https://www.link11.com/en/blog/jobs/qa-engineer-remote-first...

Odoo | Full Stack Developer | Hybrid (Belgium, 3 days/week) | Full-time | Visa + €10k Signing Bonus | https://www.odoo.com/r/mnk

Odoo builds open-source business apps used by millions. We're hiring full stack developers to work on our Python/PostgreSQL backend, fast JS framework, mobile apps, website builder, and more.

Why join us:

- €10k signing bonus - Visa sponsorship + relocation support (contains 1 month free housing) - No clients, no deadlines — just clean, open-source code - Pick your team after 3 weeks of onboarding - Great team, countryside office (with chef!), flexible hours

You:

- Master several programming languages - Proficiency in object-oriented programming - Strong in SQL, data structures, and DB design - Passionate, autonomous, and eager to build real stuff

Apply → https://www.odoo.com/r/mnk

PosterChild Inc ($2M pre-seed) | https://posterchild.ai/ | – Founding Full-Stack Engineer – Bay Area (Hybrid) | Build the core of an AI platform already used by 40+ nonprofits including UC Berkeley, SMASH, and the Kapor Foundation. Several partners have boosted their fundraising campaigns by hundreds of percent with PosterChild. As our one of first engineers you’ll work across Next.js/React + Python/FastAPI, integrate cutting-edge AI workflows, and make key architecture decisions with the founding team. Salary: $120–150K base + $10K bonus + 0.25–1% equity (performance grants available). JD: https://shorturl.at/DBTK4

StorPool | Senior Software Engineer - Storage Core (C/Linux) | Remote (UTC-1 to UTC+5) | Full-time

StorPool is building the future of data storage. Our software runs at the heart of modern clouds, delivering <100µs latency, 113M+ IOPS per cluster, and 99.999% availability. We're profitable, self-funded, and our customers love us (NPS off the charts).

We're looking for a Senior Software Engineer to join our Core Storage team. You'll tackle genuinely hard problems: writing custom Linux drivers, optimizing lock-free data structures at nanosecond scale, building fault-tolerant distributed algorithms, and debugging issues that go all the way down to kernel internals. This isn't CRUD work - it's systems programming at its most challenging.

Competitive salary, fully remote, meaningful time off, and a yearly education budget to keep learning.

If you get excited about shaving microseconds off I/O paths and building infrastructure that simply doesn't break, we should talk.

Apply here: https://storpool.com/force/senior-software-engineer-storage-...

Sheer Health (https://www.sheerhealth.com) | New York, NY | Full-Time | ONSITE | $150-210k + 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 have open roles for mid-level and senior level engineers.

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

Agile Six | Remote (US) | Full-time

"At Agile Six, we use modern technology and user-friendly, inclusive design to build better government services for everyone."

A6 is a pretty good company, pays very well for a fed contractor and doesn't afraid of most things. I've been here 4 years and 11 months and happy to answer questions about who we are and what we do. We focus on meaningful work, a flat, self-managed company structure, an ESOP, etc. We move very, very fast when hiring, we don't ghost applicants, and when we say we encourage applications from engineers with nontraditional backgrounds, we actually mean it.

We're a US Federal contractor. That means there are restrictions on who and where you can be, so please don't apply if you don't meet the qualifications.

Jobs Page: https://job-boards.greenhouse.io/agilesix

    - Technical Lead / Program Architect (Anticipated) https://job-boards.greenhouse.io/agilesix/jobs/6820897003 - $184,926
    - DevSecOps Engineer (Anticipated) https://job-boards.greenhouse.io/agilesix/jobs/6822093003 - $129,233
    - AI Solution Engineer https://job-boards.greenhouse.io/agilesix/jobs/6825855003 - $190,000
    - Open Source Lead https://job-boards.greenhouse.io/agilesix/jobs/6822819003 - $172,202
    - Senior Fullstack Engineer https://job-boards.greenhouse.io/agilesix/jobs/6965563003 - $172,202
    - Senior Fullstack (Frontend Focused) Engineer https://job-boards.greenhouse.io/agilesix/jobs/6964886003 - $152,305
    - UX Designer / Front End Engineer (Anticipated) https://job-boards.greenhouse.io/agilesix/jobs/6822536003 - $129,233
    - Strategic Partner Engagement Manager (Anticipated) https://job-boards.greenhouse.io/agilesix/jobs/6820821003 - $156,139

Opsin Security | San Jose / SF Bay Area (Hybrid, 2–3 days on-site) | Full-time | https://opsinsecurity.com/careers Opsin helps enterprises secure and deploy Enterprise Search/AI systems (e.g. Microsoft Copilot, OpenAI Enterprise, Google Gemini) responsibly without exposing sensitive data. Venture-backed by Race Capital. You’ll work directly with the founders on a small (~10) person team shipping fast in a huge green-field space.

We are hiring for:

- Senior AI Engineer – 5 + yrs backend + 2 + yrs ML/LLM; Python, SQL, AWS/GCP experience; comp + eq (https://www.opsinsecurity.com/jobs/senior-engineer-ai-engine...)

- Senior Full-Stack Engineer – 4–8 yrs shipping product; React/Next.js + API & DB design + Nest.js; TypeScript, Python a plus; comp + eq (https://www.opsinsecurity.com/jobs/senior-engineer-full-stac...)

- Staff Backend Engineer – 8 + yrs building scalable systems + 2 + yrs technical leadership; architect data-driven services for LLM security; comp + eq (https://www.opsinsecurity.com/jobs/staff-engineer-backend)

- Founding Account Executive – full-cycle sales to CISOs/CIOs; 5 + yrs enterprise SaaS; cybersecurity/Microsoft ecosystem a plus; ~50% travel; comp + eq (https://www.opsinsecurity.com/jobs/founding-account-executiv...)

Tech stack: Python, TypeScript (Nest.js), React (Next.js), Postgres, Azure, modern LLM tooling

How to apply: email your résumé + a short note to careers@opsinsecurity.com with subject “HN – [role]”, or apply on our careers page.

I’m Shay Nehmad, Founding Engineer at the company. Happy to answer questions at shay@opsinsecurity.com or on LinkedIn.

CloudTrucks (4 days/wk in-person in SF) | H1 transfers supported (no new sponsorships though) | Full-time | Python, Django, PostgreSQL, Typescript, React, GCP CloudTrucks is a very well funded series-B startup in Trucking domain. Our main goal is to help trucking enterpreneurs make more money and worry less about overheads. We have openings for mid level and above SWE roles. Please note that at this time we're only accepting applications with atleast 3 years of relevant experience. The ones on priority (and every application is being read diligently) are as follows:

Software Engineer, Business Platform - https://jobs.ashbyhq.com/cloudtrucks/f0343129-4cb4-4615-98ac...

Full-Stack Software Engineer, Growth - https://jobs.ashbyhq.com/cloudtrucks/b18a950c-de7e-4cfd-ab30...

Software Engineer, Marketplace - https://jobs.ashbyhq.com/cloudtrucks/03a04ae9-07f8-4afe-aafd...

And there are more roles you can apply to at https://jobs.ashbyhq.com/cloudtrucks

Thunder Compute (S24) | VMWare for GPUs | www.thundercompute.com | 6 days/wk in-person in SF

We are a GPU cloud provider, building proprietary virtualization software to use our GPUs 4x more efficiently than competitors.

In other words, a systems research lab monetized with a cloud offering.

- Rocket ship, revenue growing 100%+ MoM

- 4-person team, expanding to ~8-10 over the next 6 months

- YC S24, just closed $4.5M of seed funding

If you are looking for a post-PMF team with deeply interesting work and a clear path to scale, here's your chance.

Open roles:

- Systems engineers (C++, performance optimization close to the metal)

- Infrastructure engineers (GoLang, K8s, experience building reliable systems at scale)

- Devrel engineers (Full stack, track record of community building)

Apply here --> https://www.ycombinator.com/companies/thunder-compute/jobs

Tram Case | AI for Legal Ops | www.tramcase.com

Hiring Tech Lead & Senior Engineering Manager US/Mexico/Argentina Remote. Hiring Senior Engineers (Backend, Frontend, AI) – REMOTE (LATAM)

We build AI tools that help high-volume law firms manage their caseloads more efficiently. Our first product—an AI assistant that transcribes and classifies inbound calls—is in production. We’re now expanding into case tracking, follow-ups, and full workflow automation.

Looking for:

Tech Lead / Senior EM: Based in SF, LA, CDMX, GDL, or Buenos Aires. Remote work with 1 week/month onsite. Lead a senior team, shape product and tech, work closely with founders.

Senior Engineers (Backend, Frontend, AI): Remote across LATAM. Build fast, useful tools. Small, experienced team. Real autonomy and product impact.

Tech Stack: Python, TypeScript, Postgres, Kubernetes, GCP Languages: Spanish + English for leadership. English only OK for engineers.

Apply via www.tramcase.com

CLEAR | Senior/Staff Backend Engineers | NYC Onsite (4-5 days in-office w/ free catered lunch daily) | https://www.clearme.com/

CLEAR's mission is to strengthen security and create frictionless experiences. With over 33 million members and a growing network of partners across the world, CLEAR's identity platform is transforming the way people live, work, and travel. CLEAR connects you to the things that make you, you – making everyday experiences easier, more secure, and friction-free. We're committed to privacy done right which means members are always in control of their own information, and we never sell member data.

If interested, apply here --> https://grnh.se/e4e5dc881us

Tramcase (https://tramcase.na.teamtailor.com/#jobs) - From Senior to Engineering Manager - Python - Legal Tech AI - Remote (EM and Tech Lead: USA, Arg, Mx -with travel-, Latam)

Tram Case is revolutionizing legal technology with AI-driven tools that enhance efficiency and accessibility for legal professionals. We're undertaking high-impact technology transformation, partnering with a high-volume immigration law firm to optimize workflows and streamline processes. Join us in building the future of legal tech, where impactful innovation meets user-centric design.

Perks and Benefits: Remote-First Work Environment Competitive Salary Unlimited Paid Time Off Professional Development Home Office Stipend Latest Tech Gear Team Retreats and Virtual Events Parental Leave

You can have a look at the roles and apply via: https://tramcase.na.teamtailor.com/#jobs

ML6 | Machine Learning Engineer, Data Engineer | Python, TensorFlow, PyTorch, GCP, AWS, Azure | Full-time | Amsterdam, Berlin, Ghent (EU) On-site/hybrid

We are a Machine Learning consulting company that builds end-to-end Machine Learning solutions. By applying the latest AI research, we keep our clients at the forefront of innovation. If you are interested check out: https://www.ml6.eu/knowledge-hub/blog and https://www.ml6.eu/customers/cases

Work on innovative projects for the biggest clients across Europe such as Randstad, ASML, FUNKE, and many more! Whether it’s about leveraging LLMs to improve customer support, building data lakes on cloud platforms to improve storage or implementing models using sensor data for quality control. You can find it all at ML6. You will mostly work with Python and a range of ML frameworks such as TensorFlow, PyTorch, or HuggingFace Transformers to solve hard Machine Learning tasks and help bring these application into production by building data pipelines and cloud infrastructure on all of the major cloud providers (GCP, AWS, Azure).

Open roles include:

• Senior ML/Data Engineers

• Senior AI Consultants

• Senior AI Project Managers

• Industry Directors

• Junior ML/Data Engineers

and many more!

Apply now at the https://jobs.ml6.eu/

  Location: California, US
  Remote: Yes
  Willing to relocate: Not at this time
  Technologies: Figma, Sketch, Adobe Creative Suite
  Résumé/CV: https://allie.goodson.dev/resume-2025-09-04.pdf
  Email: allie [at] goodson [dot] dev

Routefusion (routefusion.com) — Staff Software Engineer — Node.js, JavaScript/TypeScript — Fintech — Hybrid (Austin, TX)

RouteFusion is an API-first platform connecting financial services providers with streamlined payment routing across global rails.

We’re looking for a Staff Software Engineer with: - Expertise in Node.js, JavaScript, and/or TypeScript - Experience building fintech or financial infrastructure products - Strong backend architecture skills and familiarity with scalable microservices

*Location*: Hybrid onsite in Austin, TX *Compensation*: Competitive salary + equity, commensurate with experience *Apply*: Email me directly at brad@routefusion.com with "HN: Staff SWE" in the subject line, or apply via https://jobs.ashbyhq.com/routefusion/5eee669a-ef6b-460a-b689...

I’m Brad Holmes, Head of Engineering at Routefusion, and I’ll be personally reviewing all responses—look forward to hearing from you!

Queueco | HFT | London, UK | Full time on-site | Visa sponsor

We are a proprietary trading firm operating in conventional as well as cutting-edge alternative markets. Our strategies run 24/7 without manual intervention powered by low-latency infrastructure and the latest machine learning techniques. We’re a meritocratic and lean team of highly-motivated scientists and developers and as such value technical ability more than politics: what matters is how good your code is, not how well you sell yourself. We spend no time dealing with clients, customers or investors and instead focus on growing our business by building better technology.

If you are a talented research engineer with strong developer skills who likes to work on low latency systems and large data science pipelines then please get in touch. We are also happy to sponsor exceptional talent.

You will be embedded within research and serve as primary resource for diverse software engineering challenges within the team. Your responsibilities will include efficiently processing extensive amounts of market data or improving the computational performance of live strategy code.

You can have a look at the role and apply via: https://apply.workable.com/queueco/j/A43D6B3C23/

Or directly write us an email to hn@queueco.com.

Vivint | Home Automation - IoT, making cool stuff | Boston, MA | onsite

At our Boston Innovation Center, we're delivering an integrated platform, award-winning products and the industry's first artificial intelligence for the smart home. Check out our openings and join the #SmartHomeRevolution

We are looking for designers and engineers across multiple functions, but here are just a few:

- Android senior engineers

- Backend Python/goLang engineers

Check out all of our openings here: https://careers.nrgenergy.com/SMARTHOMES/search/?location=Bo...

Technologies we touch: kotlin, swift, golang, python

Please email matt.deangelo1@vivint.com

Abnormal AI | REMOTE (US, Canada) with optional offices in SF & NYC | https://grnh.se/y5i0cdv43us I am an Engineering Manager in the Message Security Division. My team builds the platform for inbound email security, fighting cybercrime every day at a massive scale!

We are looking for a Staff MLE that will serve as a technical leader and subject matter expert, providing architectural guidance and mentorship across multiple machine learning workstreams. This role is central to our mission of protecting the world’s largest enterprises. You will be responsible for reasoning about the gaps in our multi-layered detection system and proposing generalizable ML solutions.

I'm also looking for exceptional backend software and distributed systems engineers. We have multiple open positions for each of these roles, working in Python, Golang, Spark and Kafka among other leading edge technologies.

Abnormal AI recently secured our Series D round of financing at $250 million and is growing like a rocket in every way. If you're looking for personal as well as company growth, you won't find a better company than Abnormal AI!

Please see the following links for more details on the open positions and our general careers page link for all open positions across the company. We are hiring for engineering in other divisions as well!

Staff Software Engineer - Attack Detection

    Remote USA: https://grnh.se/ayvndq9o3us

    Remote USA: https://grnh.se/y5i0cdv43us

Serac Group | Technical Lead | London, UK | Onsite | 80,000 - 95,000 GBP / year | Startup | Full-Time

Tech used: AI, AWS, CTO, Docker, Support, Kubernetes, Machine Learning, PLC

Serac Group is a UK-based technology company leading the digital transformation of the property, planning, and local government sectors. Through our suite of platforms—including SeracTech, Ibex, Planda, and our upcoming launch Rafter—we are reshaping the future of property data, planning intelligence, and civic technology. We are one of the largest providers of AI and backend software to local government in the UK, supporting over 270 councils in managing planning applications. Our strategic partnership with Idox PLC helps us deliver scalable solutions across both public and private sectors.

More details and option to apply: https://devitjobs.uk/jobs/Serac-Group-Technical-Lead

Axiom | Senior Design Engineer | REMOTE (UTC-5 to UTC+1) | Full-time

Axiom (https://axiom.co) is used by thousands of great companies like Asana and Framer for logging and observability. Our underlying tech is best-in-class, but we have a much higher ambition for the craft and quality of our user experience.

We’re looking for a brilliant design engineer who cares deeply about UI craft. You’ll be a critical bridge between design and engineering, creating the systems and interfaces that reimagine entire product categories.

- Stack including React, TypeScript, TanStack, Tailwind

- Thousands of customers including a frontier model provider, ambitious startups and the world’s largest enterprises

- Backed by the best (Nat Friedman, Guillermo Rauch, LocalGlobe, Crane, Fly, and more)

Apply here https://axiom.co/careers/8133803002

I will personally read every application!