Senior Embedded Systems Engineer

JR United Kingdom; Exeter; On-site; GBP 135,000 - 165,000; Full time

Job summary

A leading AI company is seeking a Senior Embedded Engineer to design high-performance tools for their Optical Tensor Processing Unit. You will play a crucial role in ensuring hardware safety and performance, collaborating with cross-functional teams and developing embedded solutions. If you thrive in a fast-paced environment and are passionate about innovation in AI, apply to join the team in London.

Benefits

Stock options

Comprehensive healthcare insurance

Private use of 3D printer

£24,000/year incentive for close proximity to office

Qualifications

• 5+ years experience with hardware bring-up, calibration, and debugging.
• Deep proficiency in C/C++ for embedded applications.
• Strong Python skills for prototyping and automation.

Responsibilities

• Architect tooling for hardware validation and rapid prototyping.
• Develop calibration and debug tooling primarily in Python.
• Define CI/CD infrastructure for embedded development.

Skills

C/C++

Python

Hardware debugging

CI/CD pipelines

Communication skills

Tools

Oscilloscopes

Logic analyzers

JTAG

Job description

Company Overview

Flux has developed the world’s first Optical Tensor Processing Unit (OTPU). Flux's OTPUs are custom-designed AI accelerators optimized for training and inference of large AI models. Join us in London to be part of a dynamic team that thrives on innovation and speed.

The role

We’re searching for Senior Embedded Engineers to design and build high-performance tooling supporting our OTPU hardware development. You will own tools for hardware safety, calibration, debugging, and validation, from concept to deployment, rapidly iterating, prototyping, and delivering robust embedded solutions that enable our OTPUs to operate safely, efficiently, and at peak performance.

Responsibilities

• Architect robust tooling for hardware validation and bring-up, with rapid prototyping in Python and a clear transition to production-grade implementations.
• Design and implement embedded systems for hardware safety, synchronization, and low-level control.
• Develop calibration and debug tooling, primarily in Python, with rapid prototyping.
• Define and implement CI/CD infrastructure tailored for embedded development, ensuring fast iteration and high system integrity.
• Create systems for real-time monitoring, diagnostics, and fault handling across OTPU hardware.
• Define and enforce clear boundaries between prototype and production code for maintainability and velocity.
• Collaborate with optical, hardware, and software teams to align on system interfaces, requirements, and performance goals.

Skills & Experience

• 5+ years experience with hardware bring-up, calibration, and debugging of custom systems (e.g., SoCs, FPGAs, AI accelerators).
• Deep proficiency in C/C++ for embedded applications, understanding real-time constraints, memory models, and hardware interfaces.
• Strong Python skills for prototyping, automation, and test development.
• Experience building CI/CD pipelines for embedded systems (e.g., automated flashing, testing, artifact management).
• Proficiency with hardware debugging tools (oscilloscopes, logic analyzers, JTAG) and interpreting electrical signals.
• Solid understanding of hardware/software boundaries, including interrupts, bus protocols (e.g., PCIe), and memory-mapped I/O.
• Excellent communication skills; ability to thrive in fast-paced, interdisciplinary startup environments.

Details

• Competitive salary: £135,000 - £165,000 depending on experience.
• Stock options in a rapidly growing AI company.
• Based in our new 5,000 sq. ft. office in Kings Cross, London.
• All employees are required to work from our London HQ and live within a 45-minute commute; an additional £24,000/year incentive is offered for those living within 20 minutes.
• Comprehensive healthcare insurance.
• Private use of our 3D printer.

If you are passionate about advancing AI and thrive in a high-energy, fast-paced environment, we want to hear from you. Apply now to join Flux and shape the future of computing.