Shift helps enterprises move faster through complex transformation programmes. We're an early-stage UK startup building the AI systems that power how we deliver that work.

We're hiring an AI Engineering Lead to own the intelligence layer end to end. You'd own the agent systems, work close to the infrastructure, and set the engineering bar for how the product is built. You'd partner directly with the Product Owner: they own the what and the why, you own the how. It's a high-autonomy role at an early stage. No layers, no politics.

Looking for: strong Python, real production experience with LLM APIs (well beyond demos), and a bias for shipping. Container and multi-tenant SaaS experience is a plus.

Apply: humans@shiftco.ai

We're working in the AI for science space, specifically at the point of experimental execution. Scientific labs run on expensive instruments locked behind proprietary software with no real API. Getting an agent to actually operate these machines is unsolved, and it's the bottleneck between "AI can design experiments" and "AI can run them." That's what we're building.

Small, technical, well-funded team with real design partners already pulling on us. You'd be one of the first engineers, working directly with the founders across the stack: agents, low-level systems, ML infra, and the runtime that ties it together. Lots of hard, unglamorous, high-leverage problems.

You might be a good fit if:

- You're a strong generalist who's shipped real systems and can go deep when needed

- You're comfortable in messy, low-level territory

- Bonus: ML/agents, scientific instrumentation, or industrial automation

- You want high ownership, high pace, onsite in NYC

We're mostly a Python/Rust/Typescript shop. We care about what you've built, not credentials.

To apply, email contact@tetherline.dev with a bit about yourself and something you've built you're proud of.

At Twindo, we’re working on spatial computing - using computer vision to 3D reconstruct and understand your surroundings so that software can operate over real-world spaces.

Twindo brings together everything that professionals need to understand the spaces they design, build, and manage, without extra site visits or second-guessing. With a quick scan or plan upload, any space becomes structured, accurate, design-ready data your whole team can actually use.

Senior Backend Engineer (LATAM Remote)

For detailed information check out https://www.twindo.com/careers/

Keywords: 3D, computer vision, photogrammetry, geomatics, SLAM, CAD, iOS, Python

Founded in 2022, we are a fintech company that gives full-time employees fair access to their earned wages, alongside financial services & tools to help them earn and save more. Already active in four countries, we’re expanding rapidly across both product scope and markets. We are a small global remote team. The roles below are applicable to those in the GMT+8 to GMT+8 timezones.

- Sn. Product Manager, Earned Wage Access

- Sn. Product Manager, Onboarding & Activation

Apply: https://job-boards.eu.greenhouse.io/finnapp

Do you feel scared and alone when opening the AWS console? Do you wish you could just tell Claude to manage your infra, and it would just work? Do you dream of a future where software is abundant and developers and normies alike are free to build their wildest dreams?

We're Railway, and we think infrastructure can be better. We're working at the forefront distributed systems engineering, interface design, and agentic computing to bring about the infrastructure platform we've always wanted. So far we've built out a platform loved by 3M+ users and we're just getting started.

Fair warning! The problems are complex: racking and stacking servers, 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.

Five open roles (apply below!):

+Senior Infra Engineer: Storage -Apply here: (https://jobs.ashbyhq.com/Railway/25d8444a-47dc-4084-ae56-29a...)

+Brand Designer - Web: -Apply here: (https://railway.com/careers/brand-designer-web)

+Senior Infra Engineer: Observability -Apply here: (https://railway.com/careers/platform-engineer-instrumentatio...)

+Product Engineer (full-stack): -Apply here: (https://jobs.ashbyhq.com/Railway/6ddcfe47-6cce-469b-ba6d-4f0...)

+Infrastructure Engineer(Platform): -Apply here:(https://jobs.ashbyhq.com/Railway/b8072f95-043f-404d-a313-f0b...)

We are a small team in a leading semiconductor manufacturing company building the in house design of experiment engine powered by LLM based on the years of process engineering knowledge in the company and real experimental data. We work on the model and harness around it and collaborate closely with process engineers in the company and with a large impact in real workflows.

Currently hiring algorithm developer/MLEs (US only) with experience in hacking around LLMs, either training or building applications.

Please send your resume to shiji_xin@amat.com

Hiya is a Seattle-based voice security company whose Voice Intelligence Platform protects over 500 million users worldwide from spam, fraud, and deepfake scam calls while helping businesses build trust with customers through verified caller ID. We are hiring across engineering and product, please view the job descriptions below and apply using these links if you are interested.

Senior Software Engineer: https://jobs.ashbyhq.com/hiya/2de4d41b-a919-48c4-9a6c-e0d4f3...

Sr.Product Manager: https://jobs.ashbyhq.com/hiya/77d23447-28c6-47d8-ba17-937dcc...

Principal Product Manager: https://jobs.ashbyhq.com/hiya/a5b73022-e73e-47b7-ac24-911ed5...

CoVar is a small R&D company specializing in AI/ML and software development for defense and healthcare. Bootstrapped and profitable. We're looking for a jack-of-all-trades who can: prototype computer vision algorithms, build Python web services, wrangle large sets of data from disparate classes of sensors, ... any or all, with the only hard requirement being eagerness to learn.

Visit covar.com for more information on our current openings!

YC is hiring Product Engineers to build the future of YC -- and increasingly, software for startups everywhere.

We're a team of ~20 engineers building everything from Work at a Startup and Demo Day to investor software, founder tools, AI systems, and new open source projects. We don't have PMs. Engineers talk to users, decide what to build, and ship quickly.

Some of what we've been building:

* New products: GStack rethinks the software stack for an AI-native world. GBrain explores persistent memory and knowledge systems for AI. Paxel and other AI-powered products help founders—and increasingly everyone else -- build software and companies faster.

* Products at scale: We build and operate Work at a Startup (2M+ candidates, 1000s of early startups), Demo Day, our investor marketplace, SAFE signing, founder CRM, and the software that powers YC itself.

* Data: YC has over 20 years of proprietary startup data. We're applying it to how we think about the future of YC's batch, fundraising tools, hiring, recommendations, and entirely new ways to help people start and grow successful companies.

AI has fundamentally changed how we build software, and we're looking for engineers who are already experimenting with coding agents, MCP, LLMs, context engineering, evals, developer tooling, and whatever comes next. Our stack includes Rails, React, Postgres, Python, TypeScript, LLM APIs, and plenty of experimental infrastructure, but we're much more interested in great builders than expertise in any particular framework.

We're in person in San Francisco (Dogpatch). You'll work closely with founders and alongside people like Garry, Jared and Diana, helping define how YC—and startups more broadly—build software in the AI era.

We offer competitive compensation, carry in the YC fund, and a small, high-autonomy engineering team.

Learn more about the team and role at https://www.ycombinator.com/software. If this sounds exciting, I'd love to chat -- email me directly at ryan@ycombinator.com.

Home-based care should be the default in American healthcare. It isn't, mostly because the technology has never been good enough. Patients heal faster at home, it costs a fraction of facility-based care, and it's what people actually want — yet the industry runs on phone calls, spreadsheets, and systems built in the 90s. We started Axle Health because we think that's fixable, and because the stakes are high enough that it's worth doing right.

We're Axle Health, and we think in-home care deserves world-class technology. We're building the operating system for home-based healthcare — the scheduling intelligence, the clinician tools, the logistics coordination — everything that has to work perfectly so a clinician shows up at the right door at the right time with everything they need. It's a hard and important problem, and we're just getting started.

The complexity is real: real-time scheduling optimization across dynamic clinician networks, last-mile logistics that make Uber Dispatch look simple, integrations with every flavor of EMR and payer system you've never heard of, mobile-first tools that have to work in spotty cell coverage in someone's living room, and the compliance surface area that comes with handling PHI at scale — we need to build it all, and we want people who think this stuff is genuinely fun.

Currently hiring Senior Software Engineers (7+ YOE) for:

Backend (Python + Django): https://www.axlehealth.com/careers?ashby_jid=8db08b55-399c-4...

Interoperability (Typescript + Node): https://www.axlehealth.com/careers?ashby_jid=0bcdc195-ac3f-4...

DevOps and Infrastructure: https://www.axlehealth.com/careers?ashby_jid=c54930f7-5de6-4...