Software Engineer – High-Performance Computing & Quant Tech

HMx Labs – London (Hybrid), Permanent, ~£70k + benefits

HMx Labs is a boutique consultancy focused on the messy, interesting intersection of high-performance computing, cloud, and quantitative finance. We help banks, hedge funds, and vendors design, build, and debug serious compute platforms – from CPU/GPU clusters for risk calculations to low-latency analytics and large-scale simulations.

We’re hiring a Software Engineer to work in the HPC side of the company. One day you might be talking to finance quants about risk workloads, the next you’re deep in conversation with GPU engineers about kernels, memory layouts and performance – and plenty in between.

More than a perfect CV, we care that you’re smart, highly motivated, and that you actually care about HPC (and maybe finance too). You should enjoy understanding how systems behave at a low level and be happy jumping between domains.

You must have

• The right to live and work in the UK indefinitely
• At least 1 year of experience as a software engineer in paid full-time employment
• Knowledge and commercial experience with at least one of, Java, C# or Python
• Experience with at least one non-managed / manual-memory language, e.g. C, C++, Rust.
• At least one of the following:

Exposure to or experience with High-Performance Computing (HPC)

Experience working in financial services technology (risk, trading, analytics, etc.)

Nice to have but not deal-breakers:

• Experience with distributed systems, job schedulers, or batch frameworks
• Working with GPUs (CUDA, ROCm, or similar)
• Familiarity with numerical methods, Monte Carlo, or risk systems
• Prior consultancy or client-facing experience

About HMx Labs

We’re a small, specialist shop, not a giant body-shop. That means:

• You’ll have real ownership and direct impact on client work
• You’ll see a wide range of interesting HPC and quant problems, not the same ticket farm every day
• You’ll work closely with people who actually care about performance, correctness and cost – not just buzzwords

Anyone applying with a recommendation from someone who has worked with HMx Labs goes to the top of the pile.

Location, salary & working style

• Role: Permanent, full-time
• Location: London-based, hybrid (some time in the office / with clients is expected)
• Salary: Around £70k + benefits, depending on experience

How to apply (and one important request)

I’ll make the same offer as last time:

I won’t use AI to filter or assess candidates if you don’t send me AI-generated applications or apply without thought. Deal?

That means I will actually read your application, but in return:

• Don’t send an obviously AI-generated CV or cover letter
• Take a bit of time to tell me why this role and this kind of work interests you

If this sounds like your kind of thing – or you know someone who fits the bill – get in touch and include:

• Your CV
• A short note explaining your experience with either HPC or financial services tech (or both)
• Anything you’re proud of (projects, talks, OSS contributions, etc.)

Looking forward to seeing who’s out there.