Senior Embedded Systems Engineer

Flux Computing designs and manufactures optical processors to train and run inference on large AI models. Join us in London to be part of a highly motivated and skilled team that thrives on delivering impact and innovation at speed.

We’re searching for Senior Embedded Engineers to design and build ultra-high performance tooling that supports our OTPU hardware development. You will own tools that span hardware safety, calibration, debugging, and validation. Your mission is to go from concept to deployment - rapidly iterating, prototyping, and delivering robust embedded solutions that enable our OTPUs to run safely, efficiently, and continuously push the limits of their performance envelope.

Responsibilities

• Project Ownership: Own and deliver projects on your team's roadmap that unlock key high-impact technical and business milestones that drive the success of Flux.
• Collaboration: Partner closely with optical, hardware, and software teams to align on system interfaces, requirements, and performance goals.
• Validation & Bring-up: Create robust tooling for hardware validation and bring-up, with rapid prototyping in Python and a clear path to production-grade implementations.
• Embedded Systems: Design and implement embedded systems for hardware safety, synchronization, and low-level control.
• Calibration & Debug Tooling: Develop calibration and debug utilities - starting with fast Python prototypes and iterating toward robust releases.
• CI/CD for Embedded: Create CI/CD pipelines tailored to embedded firmware, enabling quick iterations and reliable system integrity with hardware-in-the-loop and software-in-the-loop testing.
• Real-Time Monitoring & Fault Handling: Build systems for live hardware diagnostics, monitoring, and automated fault recovery across OTPU platforms.

Skills & Experience

• 5+ years experience with bring-up, calibration, and debug of custom hardware systems (e.g. SoCs, FPGAs, or AI accelerators)
• Deep proficiency in C/C++ for embedded applications, with a solid grasp of real-time constraints, memory models, and low-level hardware interfaces
• Strong Python skills for prototyping, automation, and test harness development
• Demonstrated experience building CI/CD pipelines for embedded development (e.g. automated flashing, test orchestration, artifact tracking)
• Proficiency with hardware debugging tools (oscilloscopes, logic analyzers, JTAG, etc.) and interpreting electrical signals in context.
• Solid understanding of hardware/software boundaries, including interrupt handling, bus protocols (e.g.PCIe), and memory-mapped I/O.
• Excellent written & verbal communication; thrive in fast-paced, cross-disciplinary start-up settings.

Compensation & Benefits

• Competitive salary ranging from £135k-£165k, depending on experience
• Generous stock options in a rapidly growing AI company.
• Based in our new 5,000 sq. ft. office in the AI hub of Kings Cross, London.
• To foster collaboration in our high-growth environment, we require all employees to work from our London HQ and live within a 45-minute commute. We offer an extra £24,000/year incentive for those living within 20 minutes.
• Comprehensive healthcare insurance.
• 25 days PTO policy plus bank holidays.
• Private access to our in-house 3D printer.

If you are passionate about pushing the boundaries of what's possible in AI and thrive in a high-energy, fast-paced environment, we want to hear from you. Apply now to join Flux and be a key player in shaping the future of computing.