Senior Python Engineer

2 weeks ago

London, United Kingdom Thyme Full time

Senior Software Engineer – Python / Hardware SystemsDo you want to build real-world machines that solve complex problems at scale? This isn't web or app development - it's embedded Python, hardware integration, and system-level engineering. We're looking for someone who writes robust code, understands how systems behave in the wild, and can make hardware and software work together seamlessly.What you'll be doing:Writing Python to interface with sensors, motors, relays, power systems, and I/ODesigning and maintaining services that run on embedded Linux (often headless)Working with serial protocols (RS232, RS485, UART, I2C, SPI), Modbus, CANbus, MQTT, and device integrationsHandling offline-first behaviour, retries, and syncing to the cloudDebugging across layers: device logs, serial traces, signal timing, and hardware behaviourBuilding automated test rigs and simulation tools to catch bugs earlyOptimising code for performance, memory, and reliability at the edgeTech you'll use or encounter:Programming: Python (asyncio, multiprocessing, PySerial, struct, ctypes, pytest)Platforms: Embedded Linux, Raspberry Pi, NUC, STM32, ESP32Protocols & comms: RS232, RS485, UART, I2C, SPI, Modbus, CANbus, MQTT, TCP/UDP socketsDevOps & tooling: Docker, CircleCI, Git, hardware-in-the-loop testing, automated test rigsOptional / bonus: FreeRTOS, ROS, backend integration for telemetry/config, computer visionWhat we're looking for:Strong Python skills in embedded, IoT, automation, or device-heavy environmentsConfident with low-level comms, hardware integration, and device abstractionAble to debug flaky hardware, noisy signals, and time-sensitive codeUnderstands performance trade-offs, concurrency, and memory constraintsBonus if you've worked on robotics, industrial control, or real-time systemsComfortable owning problems end-to-end, from code to field deploymentWhy join:Small, hands-on team with real-world impactProblems that actually require engineeringHybrid work (2-3 days onsite) from the London officeCompetitive salary of £80,000

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