Architect, Staff & Senior Systems Software Engineer

Architect, Staff & Senior Systems Software Engineer

Full-Time 80000 - 98000 £ / year (est.) Home office (partial)
O

At a Glance

  • Tasks: Design and build the next-gen DX-1 accelerator for AI models at scale.
  • Company: Join OLIX, a pioneering tech company shaping the future of AI infrastructure.
  • Benefits: Competitive salary, equity options, retirement plans, and a living-local bonus.
  • Other info: Collaborative environment with opportunities for growth and innovation.
  • Why this job: Be part of a revolutionary project that will define the next decade in technology.
  • Qualifications: Experience in systems software, C/C++, and distributed inference.

The predicted salary is between 80000 - 98000 £ per year.

About OLIX AI is growing faster than any technology in history and the explosion in demand has created a massive infrastructure gap; we can no longer build chips or power stations fast enough to keep up. The industry is still leaning on a ten-year-old hardware blueprint that has reached its limit. A new paradigm that is faster and more efficient will be the biggest economic opportunity of the next century and create the most important company of the next decade. The OLIX Decode Accelerator 1 (DX-1) is the first accelerator architected specifically for decode. Rack‑scale co‑design of logic, data movement, packaging, optics and interconnect enables a step change in system level performance.

The Role We’re searching for Architect, Staff & Senior Systems Software Engineers to own how our next‑generation DX‑1 accelerator is brought to life as a production inference platform. DX‑1 is a dataflow architecture built specifically for decode, deployed in a disaggregated inference environment. Your mission is to make that hardware serve large AI models at rack scale by building and extending the runtime and serving stack that connects PyTorch and JAX down to the metal. This is a whole‑stack systems role. You’ll work where the runtime, the network, and the accelerator meet, partnering closely with hardware, compiler, and modelling teams to optimize serving performance. Your impact is measured not only by what you build but by the leverage you create: the standards you set, the systems and tooling other teams build on, and the direction you shape across the platform.

Responsibilities

  • Own the Runtime & Serving Stack: Design, build, and extend the distributed inference and serving stack (e.g. vLLM, SGLang, NVIDIA Dynamo, TensorRT‑LLM) onto DX‑1, rather than treating any layer as a black box.
  • Scale Distributed Inference: Define how inference scales across many accelerators: tensor / pipeline / data parallelism, collective communication patterns, KV‑cache management and offload, and memory‑aware scheduling across a disaggregated topology.
  • Engineer for Reliability at Scale: Make distributed inference dependable across failure domains (fault handling, graceful degradation, load balancing, and recovery), and define the observability, tracing, and tooling standards that let teams diagnose problems across the runtime, network, and accelerator rather than through logs alone.
  • Drive Bring‑Up: Evaluate system behaviour before silicon is fully available (simulation, emulation, FPGA prototyping, analytical modelling), root‑cause what breaks during bring‑up, and influence design decisions across hardware and software teams.
  • Set Standards Across Teams: Identify the highest‑impact systems problems across teams and make sure they get solved; hold and articulate a clear technical bar and raise peers to it through review, pairing, and direct challenge; build leverage through systems, frameworks, and developing senior talent rather than solving everything personally.
  • Shape Direction: Bring structure and clear direction to ambiguous, cross‑team problems, drive structural improvements with urgency, and shape strategic direction within the platform domain, informed by external research, competitive awareness, and industry connections that help generate talent and partnership pipelines.

Skills & Experience

  • Deep experience in systems software, with hands‑on C/C++ and strong systems fundamentals across the runtime / network / accelerator boundary.
  • Demonstrated ownership of a hard, end‑to‑end systems problem, ideally extending a distributed inference / serving stack (vLLM, SGLang, NVIDIA Dynamo, TensorRT‑LLM) in production, with specifics on what you built or changed and why.
  • Distributed inference at scale: parallelism strategies, collective communication, KV‑cache and memory management, and reliability across distributed failure domains at cluster scale.
  • Fluency at the framework boundary, connecting accelerators to PyTorch / JAX and serving stacks without treating either as opaque.
  • Whole‑stack debugging: end‑to‑end and timeline tracing, workload replay, and reasoning from architectural constraints (SRAM, host–device latency, KV footprint, memory bandwidth, collective latency) to root cause.
  • Strong, business‑aware judgment on speed / cost / quality trade‑offs, and a track record of structured, calm handling of late‑emerging risk.
  • Excellent communication and the ability to align and influence cross‑functional teams (hardware, compiler, modelling) without relying on formal authority.
  • Bachelor’s degree or higher in computer science, electrical engineering, mathematics, or a related field.

Nice to have

  • Experience with dataflow or non‑GPU accelerator architectures; pre/post‑silicon bring‑up on custom hardware (ASIC/FPGA); production observability at scale (hardware counters, Prometheus/Grafana‑style export, device and cluster views).
  • Adjacent depth is welcome: HPC cluster design, high‑speed networking, distributed systems, or heterogeneous compute platforms.

Compensation & Equity

  • Competitive Salary: Commensurate with your experience, skills, and location.
  • Equity & Ownership: Meaningful stock options. You’re not just joining the mission; you’re owning a piece of it.
  • Proximity Bonus: We value your time. To minimise your commute and maximise your life, we offer an annual Living‑Local Bonus if your residence is within 20 minutes of the office.
  • Retirement Benefits: Employer‑contributed retirement plans to help you build long‑term financial security.

Due to U.S. export control regulations, candidates’ eligibility to work at OLIX depends on their most recent citizenship or permanent residency status. We are generally unable to consider applicants whose most recent citizenship or permanent residence is in certain restricted countries (currently including Iran, North Korea, Syria, Cuba, Russia, Belarus, China, Hong Kong, Macau, and Venezuela). Applicants who have subsequently obtained citizenship or permanent residency in another country not subject to these restrictions may still be eligible.

Architect, Staff & Senior Systems Software Engineer employer: OLIX

At OLIX, we are at the forefront of a technological revolution, offering our employees the chance to work on groundbreaking projects that shape the future of AI infrastructure. Our collaborative work culture fosters innovation and creativity, while our commitment to employee growth is reflected in our competitive compensation, meaningful equity options, and retirement benefits. Located conveniently for those living nearby, we also provide a Living-Local Bonus to enhance work-life balance, making OLIX an exceptional place to build a rewarding career.

O

Contact Details:

OLIX Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Architect, Staff & Senior Systems Software Engineer

Join Local Tech Meetups

Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at OLIX or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!

Contribute to Open Source Projects

Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to OLIX.

Tap into Online Developer Communities

Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like OLIX.

Explore Job Boards Specifically for Tech Roles

Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like OLIX that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!

We think you need these skills to ace Architect, Staff & Senior Systems Software Engineer

C/C++ Programming
Systems Software Development
Distributed Inference
Runtime and Serving Stack Design
Parallelism Strategies
Collective Communication
KV-cache Management

Some tips for your application 🫡

Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.

Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at OLIX.

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at OLIX and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!

Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!

How to prepare for a job interview at OLIX

Brush Up on Your Coding Skills

For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.

Know Your Tools and Frameworks

Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If OLIX uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.

Showcase Your Projects

Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.

Prepare for Behavioural Questions

While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.