Hire the Best Embedded Linux Specialists
in the United Kingdom

Embedded firmware development, bare-bone and linux based devices. Have done various projects involving IoT, WiFi, sigfox, AWS cloud, multiple sensors and microcontrollers. Also experienced in payments industry - EMV and PCI certification, NFC, L1, L2 kernels

I help startups, product teams, and hardware companies 𝐝𝐞𝐬𝐢𝐠𝐧, 𝐝𝐞𝐯𝐞𝐥𝐨𝐩, 𝐚𝐧𝐝 𝐬𝐡𝐢𝐩 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧-𝐫𝐞𝐚𝐝𝐲 𝐞𝐦𝐛𝐞𝐝𝐝𝐞𝐝 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 by combining 𝐟𝐢𝐫𝐦𝐰𝐚𝐫𝐞 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭, 𝐄𝐦𝐛𝐞𝐝𝐝𝐞𝐝 𝐋𝐢𝐧𝐮𝐱, 𝐈𝐨𝐓 𝐜𝐨𝐧𝐧𝐞𝐜𝐭𝐢𝐯𝐢𝐭𝐲, 𝐚𝐧𝐝 𝐫𝐞𝐚𝐥-𝐰𝐨𝐫𝐥𝐝 𝐡𝐚𝐫𝐝𝐰𝐚𝐫𝐞–𝐬𝐨𝐟𝐭𝐰𝐚𝐫𝐞 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧. With 𝟏𝟓+ years of experience in 𝐞𝐦𝐛𝐞𝐝𝐝𝐞𝐝 𝐂 𝐚𝐧𝐝 𝐬𝐲𝐬𝐭𝐞𝐦 𝐚𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞, I focus on 𝐫𝐞𝐥𝐢𝐚𝐛𝐥𝐞, 𝐦𝐚𝐢𝐧𝐭𝐚𝐢𝐧𝐚𝐛𝐥𝐞, 𝐚𝐧𝐝 𝐦𝐚𝐧𝐮𝐟𝐚𝐜𝐭𝐮𝐫𝐚𝐛𝐥𝐞 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 — not quick prototypes that break at scale. If you need 𝐄𝐒𝐏𝟑𝟐 𝐟𝐢𝐫𝐦𝐰𝐚𝐫𝐞, 𝐧𝐑𝐅𝟓𝟐/𝐧𝐑𝐅𝟓𝟐𝟖𝟒𝟎/𝐧𝐑𝐅𝟓𝟑𝟒𝟎, 𝐃𝐅𝐔, 𝐙𝐞𝐩𝐡𝐲𝐫 𝐨𝐫 𝐅𝐫𝐞𝐞𝐑𝐓𝐎𝐒 𝐬𝐲𝐬𝐭𝐞𝐦𝐬, 𝐘𝐨𝐜𝐭𝐨-𝐛𝐚𝐬𝐞𝐝 𝐄𝐦𝐛𝐞𝐝𝐝𝐞𝐝 𝐋𝐢𝐧𝐮𝐱 𝐜𝐮𝐬𝐭𝐨𝐦𝐢𝐳𝐚𝐭𝐢𝐨𝐧, 𝐬𝐞𝐜𝐮𝐫𝐞 𝐎𝐓𝐀 𝐩𝐢𝐩𝐞𝐥𝐢𝐧𝐞𝐬, 𝐨𝐫 𝐜𝐨𝐦𝐩𝐥𝐞𝐭𝐞 𝐈𝐨𝐓 𝐝𝐞𝐯𝐢𝐜𝐞 𝐚𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞, I deliver structured engineering from bring-up to deployment. 𝐖𝐡𝐚𝐭 𝐈 𝐃𝐨 𝐁𝐞𝐬𝐭 𝐄𝐦𝐛𝐞𝐝𝐝𝐞𝐝 𝐅𝐢𝐫𝐦𝐰𝐚𝐫𝐞 & 𝐌𝐢𝐜𝐫𝐨𝐜𝐨𝐧𝐭𝐫𝐨𝐥𝐥𝐞𝐫 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 • ESP32 firmware (Wi-Fi, BLE, MQTT, REST, OTA) • Nordic nRF52 / nRF52840 firmware & DFU • STM32, ARM Cortex-M, Arduino-based systems • Bare-metal, FreeRTOS, Zephyr development • Secure OTA (including production-grade FOTA systems) • Low-power design & optimization • Clean, scalable C/C++ firmware architecture 𝐄𝐦𝐛𝐞𝐝𝐝𝐞𝐝 𝐋𝐢𝐧𝐮𝐱 & 𝐎𝐒-𝐋𝐞𝐯𝐞𝐥 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 • Yocto-based Embedded Linux development • Linux bring-up on Raspberry Pi & custom boards • Driver integration & hardware debugging • Application-layer firmware on Linux • Production hardening & system optimization 𝐈𝐨𝐓 & 𝐂𝐨𝐧𝐧𝐞𝐜𝐭𝐢𝐯𝐢𝐭𝐲 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 • AWS IoT Core, MQTT, TCP/UDP • Wi-Fi, BLE, LTE, GNSS, LoRa, CAN • Secure device-to-device communication • Gateway architecture & cloud integration • Reliable data transmission & validation 𝐇𝐚𝐫𝐝𝐰𝐚𝐫𝐞–𝐒𝐨𝐟𝐭𝐰𝐚𝐫𝐞 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 • ESP32, STM32, Nordic, u-blox, BeagleBone, Raspberry Pi • Sensor integration (IMU, environmental, GNSS, flow, etc.) • Hardware bring-up & debugging • Oscilloscope & logic analyzer-based validation • System-level architecture & scalability planning 𝗧𝗲𝘀𝘁𝗶𝗻𝗴, 𝗩𝗮𝗹𝗶𝗱𝗮𝘁𝗶𝗼𝗻 & 𝗣𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 𝗥𝗲𝗮𝗱𝗶𝗻𝗲𝘀𝘀 • Hardware & firmware testing • Debugging & troubleshooting • Performance optimization & reliability testing • Simulation, emulation & field-deployment validation • Production-ready handoff & documentation 𝐍𝐨𝐭𝐚𝐛𝐥𝐞 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐏𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧 𝐅𝐎𝐓𝐀 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 𝐟𝐨𝐫 𝐮-𝐛𝐥𝐨𝐱 Architected and implemented a complete firmware-over-the-air system with secure updates and version control. 𝐍𝐨𝐫𝐝𝐢𝐜 𝐁𝐋𝐄 𝐖𝐞𝐚𝐫𝐚𝐛𝐥𝐞 𝐒𝐲𝐬𝐭𝐞𝐦 (𝐧𝐑𝐅𝟓𝟐𝟖𝟒𝟎-𝐃𝐨𝐧𝐠𝐥𝐞/𝐧𝐑𝐅𝟓𝟑𝟒𝟎) Designed GATT architecture with 517-byte MTU, serial command interface, and multi-sensor communication stack. 𝐋𝐨𝐑𝐚-𝐁𝐚𝐬𝐞𝐝 𝐒𝐦𝐚𝐫𝐭 𝐃𝐨𝐨𝐫 𝐋𝐨𝐜𝐤 (𝟐𝟎𝟎+ 𝐔𝐧𝐢𝐭𝐬) Built secure unlock feedback system with device-to-device communication and structured unit validation logic. 𝐒𝐦𝐚𝐫𝐭 𝐀𝐪𝐮𝐚𝐫𝐢𝐮𝐦 & 𝐏𝐥𝐚𝐧𝐭 𝐌𝐨𝐧𝐢𝐭𝐨𝐫𝐢𝐧𝐠 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 Designed real-time environmental monitoring systems integrating sensors, pumps, and actuators with embedded control logic. 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤 Firmware: C, C++, Embedded C, FreeRTOS, Zephyr, ESP-IDF, Nordic SDK, Arduino Embedded Linux: Yocto, Buildroot, OpenWrt Hardware Platforms: ESP32, STM32, nRF52, nRF53, ARM Cortex-M, Raspberry Pi, u-blox Connectivity: Wi-Fi, BLE, LTE, GNSS, LoRa, CAN, MQTT, REST, MODBUS Cloud & IoT: AWS IoT Core Tools: Git, CI/CD pipelines, Keil, PlatformIO, Oscilloscopes, Logic Analyzers 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞 End-to-end embedded expertise (firmware to deployment) Strong OTA and connectivity background Production-focused engineering mindset Clean, maintainable code architecture System-level debugging capability Experience supporting hardware bring-up and manufacturing transition Long-term collaboration & NDA-friendly 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬: Embedded Systems, Firmware Development, ESP32, nRF52840, nRF5340, Zephyr, FreeRTOS, Embedded Linux, Yocto, IoT, OTA, FOTA, ARM Cortex-M, MQTT, LoRa, BLE, AWS IoT, Modbus, Sunspec, Hardware Software Integration, Low Power Design, Production Firmware 𝗛𝗮𝘀𝗵𝘁𝗮𝗴𝘀 #EmbeddedSystems #FirmwareDevelopment #ESP32 #IoT #EmbeddedLinux #Microcontrollers #RTOS #FreeRTOS #HardwareEngineering #FOTA #OTA #IOT #MODBUS #SunSpec #LowPowerDesign #ProductionReady #IoTGateway If you need an 𝐄𝐦𝐛𝐞𝐝𝐝𝐞𝐝 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 and 𝐈𝐨𝐓 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 with deep expertise in firmware, hardware design, manufacturing processes, and real-world deployment, I’m ready to collaborate.

Senior embedded and mobile engineer helping hardware teams turn connected-device prototypes into reliable products. I specialise in Nordic and Zephyr firmware, Bluetooth LE, LTE-M, secure OTA, and companion iOS/macOS apps. I work directly with founders, CTOs, and product teams on new builds, technical audits, difficult integrations, and long-term device support. Selected work: • AirTurn — sole developer of its iOS app and SDK, macOS app, and Zephyr-based firmware platform, supporting a decade of Bluetooth pedals and remotes. • KēZ — firmware, SwiftUI app, and backend integration for an LTE-M vehicle-security product with OTA updates and live diagnostics. • Positive Grid — nRF Connect SDK and Zephyr firmware for production Bluetooth and USB MIDI controllers. • ROUTES — Raspberry Pi, Python, MQTT, and WireGuard control system for a large public-art installation. Typical engagements: • Embedded firmware and connected-product architecture • BLE/LTE-M integration and companion apps • Security, OTA, reliability, and codebase audits • Long-term ownership of deployed devices Most projects begin with a short discovery phase or fixed-scope audit. You receive a clear plan covering risks, priorities, acceptance criteria, and next steps before a larger build. UK-based and working internationally. If you are building a connected product, inheriting an embedded codebase, or need a senior engineer to take ownership of a device already in the field, send me the hardware, current stage, and main technical risk.

I’m a seasoned Python backend developer with a proven track record of delivering reliable, production-ready solutions. My background as a control and instrumentation engineer gives me a strong foundation in electronics and automation, which I now combine with modern Python development. Alongside backend expertise, I build IoT solutions with Raspberry Pi and ESP32, using Python and MicroPython to connect hardware with cloud systems via BLE, MQTT, and REST APIs. This unique mix of software and hardware skills lets me deliver practical, real-world solutions that bridge both domains.

I run Linux infrastructure in production every day: Ansible, VPNs, containers, and fleets of remote Linux devices. Currently rolling out bootc for image-based OS updates. Day to day I work with Ansible-configured Linux devices across multiple sites, covering VPN connectivity, monitoring and heartbeat reporting, remote configuration rollout, and the failure modes you only learn by owning a fleet. What I can do for you: • Ansible playbooks and roles for repeatable server and device provisioning • Bash and Python scripting to replace manual steps: provisioning, parsing, and scheduled jobs • Container work in Docker and Podman, including Compose stacks and rootless systemd-managed containers • VPNs with WireGuard and OpenVPN: site-to-site, remote access, and split tunnelling with network namespaces • Linux IoT and edge fleets: remote management, config rollout and status monitoring for devices you can't physically reach • Server hardening: SSH, iptables/nftables, LUKS encrypted storage, least-privilege access • Git, GitHub and CI pipelines, including setting up version control from scratch and training a team to use it • Nginx reverse proxy configuration and TLS termination • Self-hosted services and monitoring (Gotify, Syncthing, Monit, CalDAV/CardDAV) How I work: I take on one or two projects at a time so each gets proper attention. Timelines get agreed up front and I keep them realistic rather than tight. You get written updates at agreed milestones and a documented handover at the end, so your team can maintain what I build without me. Fully remote and async, no scheduled calls needed. I'm the best fit for infrastructure work that matters but isn't on fire: the backlog item you've been meaning to get to for six months. I don't take incident response or on-call work, but I'm happy to work on an ongoing part-time basis if the work is planned rather than reactive. Tell me what you're running and what you'd like fixed, and I'll tell you what I'd do.

I am a senior software engineer and technical lead specialising in software development across web and backend systems, supporting clients in delivering secure, scalable, production-ready solutions. My work focuses on technical leadership and solution delivery, including: • Software solution design and system architecture • Web and backend application development • System integration and data-driven platforms • Cybersecurity consultancy and secure-by-design engineering practices I operate as a Technical Lead and System Architect, translating business and technical requirements into clear, executable designs. I provide technical direction and oversight where needed, ensuring solutions are structured, secure, and maintainable. Technology scope (non-exhaustive): • Web and backend platforms (JavaScript/TypeScript, Node.js, Python, C#) • Modern web interfaces and dashboards • APIs, integrations, and distributed systems • Data platforms and system-to-system communication • Security-focused architecture and cybersecurity best practices Background I am the Director of Cortex Fusion Engineering Ltd, a small UK-based software engineering company focused on custom software development and cybersecurity consultancy.