Halian is working with a pioneering medical technology company to recruit a Principal Embedded Software Engineer. In this senior role, you will contribute to the design, development, verification, and validation of Class III active implantable medical devices. Youll collaborate closely with the System Architect, providing technical leadership in embedded software and systems integration, ensuring compliance with regulatory standards. This position is critical to delivering safe, reliable, and high-quality implantable products while driving continuous improvement across engineering processes within a regulated framework. Key Responsibilities Design, develop, and verify embedded software and tools for Class III Active Implantable Medical Devices. Lead subsystem and component design, ensuring robust integration and compliance with IEC 62304. Produce and review software requirements, architecture, and detailed design documentation. Develop, qualify, and maintain manufacturing and test fixtures, including subcontractor tools. Apply electronic schematics to support software development, debugging, and verification. Champion software engineering best practices version control, code reviews, CI, and automation. Support risk management, audits, and continuous improvement in line with ISO 14971 and ISO 13485. Mentor junior engineers and promote high technical and quality standards. Deliver assigned work packages to meet technical, schedule, and quality goals. Collaborate with cross-functional teams and external partners to ensure system-level alignment. Identify and manage technical risks to maintain project delivery. Contribute to innovation, intellectual property, and process improvements in software and system integration. Skills & Experience Essential Degree (BEng/MEng/MSc) in Software Engineering, Electrical/Electronic Engineering, Computer Science, or related discipline or equivalent experience. Extensive experience in embedded software development (C/C++) and supporting tools (C#, Python desirable) in a regulated industry. Expert-level proficiency in bare-metal C and C++ for resource-constrained microcontrollers (ARM Cortex-M or similar). Strong background in real-time embedded system design, including interrupt-driven architectures, low-latency firmware, and deterministic execution. Demonstrated experience designing systems for ultra-low-power operation, including power profiling and optimisation techniques, sleep modes, clock scaling, and peripheral gating, and memory/CPU usage optimization and code-size reduction. Familiarity with wireless and sensor integration in constrained systems (e.g., BLE, NFC, proprietary RF, IMUs, biosensors). Experience with Class III Active Implantable Medical Devices or other high-integrity safety-critical embedded systems. Ability to interpret and integrate software with electronic schematics and hardware interfaces. Hands-on experience with embedded hardware bring-up, board support packages, and low-level firmware drivers (I2C, SPI, UART, ADC/DAC, timers, PWM, GPIO). Proficiency in version control (Git), automated testing, and continuous integration pipelines. Proven ability to generate clear, compliant documentation suitable for regulatory submissions. Excellent understanding of software lifecycle processes and quality system compliance. Desirable Experience in telemetry, stimulation, or sensing systems for active implants. Understanding of cybersecurity principles applicable to medical software. Familiarity with cloud computing or containerisation (Docker, AWS, Azure) for test and data systems. Strong working knowledge of IEC 62304 (software lifecycle), ISO 13485 (QMS), and ISO 14971 (risk management). Experience working with Notified Bodies, FDA, or MHRA on software-related submissions. Strong mentorship and technical leadership within cross-functional teams.