At a Glance
- Tasks: Develop and optimise performance-critical ML kernels and low-level control paths.
- Company: Fractile, a pioneering tech company focused on AI inference chip development.
- Benefits: Competitive salary, flexible work options, and opportunities for professional growth.
- Other info: Collaborative environment with a focus on innovation and career advancement.
- Why this job: Join us to shape the future of AI technology and make a real impact.
- Qualifications: Deep embedded software experience and strong skills in C and assembly.
The predicted salary is between 48000 - 72000 £ per year.
London or Bristol, 3 days in the office, 2 days WFH.
At Fractile, we’re building what we believe will be the world’s fastest AI inference chip from the ground up. We’re balanced across hardware and software engineering, and HW/SW co-design is real here. We move fast, and we help each other move fast. We care about each other, the software we ship, and the people who rely on it.
On the device, close to the metal, we write the runtime software that orchestrates work across the chip and runs performance-critical ML kernels. This is where performance gets real and the wins compound. Your work directly influences trade-offs for the silicon, system deployment, and the compiler.
You’ll drive the first accelerator compute runs, evaluating performance on silicon, running early benchmarks, and feeding results back into the hardware and software roadmap.
What you’ll do:
- Write and optimise performance-critical ML kernels in C, with assembly where it matters (RISC-V and our own ISA).
- Build the low-level control paths that feed those kernels, including scheduling, synchronisation, and data movement.
- Write targeted validation workloads and microbenchmarks to keep simulation and hardware behaviour aligned and performance measurable.
- Profile, benchmark, and track regressions so performance improvements are real and repeatable.
- Work closely with simulation, hardware, ML, compiler, firmware, and runtime engineers in a tight loop, turning profiling data into architecture feedback and real performance wins.
What we’re looking for:
- Proven deeply embedded software experience.
- Strong performance instincts. You can reason about low-level architecture, memory behaviour, and where the cycles are spent.
- Excellent C, and a pragmatic approach to building high-quality, maintainable low-level code.
- Comfortable writing and debugging optimised assembly (RISC-V ideal).
- Collaborative and high-ownership. You communicate clearly, move fast, and enjoy working through hard problems with others.
- Computer Science, Electronic Engineering, Maths, Physics, or related degree and 3+ years of industry experience.
Nice to have:
- Experience with GPUs or dedicated ML accelerators.
- Rust and/or Python experience.
- Experience with simulators (functional or performance) and writing validation or benchmarking workloads.
- Familiarity with modern ML inference workloads.
If you want to build the software that turns cutting-edge hardware capability into real throughput and low latency, come build it with us.
Senior Software Engineer - In Office in London employer: Fractile
Fractile is an exceptional employer, offering a unique opportunity to be part of a fast-growing AI hardware startup in London. With a supportive and ambitious team culture, employees are empowered to take ownership of their work while enjoying ample opportunities for personal and professional growth. The company's commitment to innovation and compliance in a cutting-edge field ensures that every team member plays a vital role in shaping the future of technology.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Engineer - In Office in London
✨Join Local Coding Meetups
Get involved in local coding meetups or tech events. These gatherings are perfect for networking with other software engineers, showcasing your skills, and even getting a chance to meet potential employers face-to-face. Plus, it's a great way to learn about part-time opportunities that might not be widely advertised.
✨Contribute to Open Source Projects
Dive into some open-source projects on platforms like GitHub. This not only enhances your coding skills but also builds a solid portfolio that shows potential employers your real-world experience. Open-source contributions can lead directly to job offers since many companies scout talent in the community.
✨Utilise University Career Services
If you're in or near university, make the most of those career services! They often have connections with local tech companies looking for part-time developers and can provide valuable resources for finding job leads or prep for interviews.
✨Showcase Your Work
Build a personal website or portfolio that highlights your projects, skills, and any relevant experience. It’s a fantastic way to stand out and we encourage you to link to it in your applications. Don't forget: you can easily apply for part-time roles through our website at Fractile—just remember to include that link!
We think you need these skills to ace Senior Software Engineer - In Office in London
Some tips for your application 🫡
Highlight Your Coding Skills:Make sure to prominently feature your coding skills in your CV. List the programming languages and technologies you're comfortable with, as well as any relevant projects you've worked on. Don’t forget to link to your GitHub profile or any other coding platform where you showcase your work – it's a great way for us at Fractile to see your skills in action!
Show Off Your Problem-Solving Skills:As a part-time software developer, problem-solving is key. In your application, try to include examples of how you've tackled tough coding challenges or bugs. If you can quantify your achievements, even better! This not only shows your technical prowess but also your ability to think critically and creatively.
Tailor Your CV for Part-Time Work:For a part-time role, it’s essential to show that you’re flexible and can manage your time well. Within your CV, highlight any previous experience balancing multiple commitments or projects. It’ll reassure us that you can juggle responsibilities without compromising on quality.
Craft Your Cover Letter with Passion:Your cover letter is your chance to show us your enthusiasm for software development. Share why you're excited about joining Fractile specifically, and what you hope to gain from this part-time role. Your motivation and eagerness to learn can really set you apart from the crowd!
How to prepare for a job interview at Fractile
✨Show Off Your Code
Make sure to prepare a few coding samples or projects to share during your interview for the part-time software engineering position at Fractile. Potential employers love to see tangible evidence of your skills, so having a well-organised GitHub profile or portfolio can really make you stand out.
✨Brush Up on Problem Solving
Expect a few technical questions or coding challenges that assess your problem-solving abilities. Companies like Fractile often want to see how you think through a problem, so practise common algorithms and data structures to showcase your thought process and technical know-how.
✨Know Your Tools
Familiarise yourself with the specific programming languages and tools relevant to the role. If the job listing mentions languages like Python or JavaScript, make sure you can discuss your experience with them confidently. Knowing frameworks and libraries they use can give you an edge.
✨Highlight Your Flexibility
Since this is a part-time position, be ready to discuss how you can manage your time effectively and fit the role around your other commitments. Being able to demonstrate your adaptability and proactivity shows that you can balance work, study, or other responsibilities without dropping the ball for Fractile.
