Contract Senior Electronics / Firmware Engineer Sensor Expertise
Rate: £400 £425 per day + VAT
IR35 Status: Outside IR35
Location: Greater London (3-4 days on site per week minimum)
Contract Length: 3-6 months, with potential extension
We are working with an innovative technology business at the forefront of advanced sensing solutions, seeking a Senior Electronics / Firmware Engineer to support the development of next‑generation products. This is an opportunity to join a highly collaborative, multidisciplinary team delivering cutting‑edge solutions with real‑world impact.
In this role, you will take ownership of sensor characterisation and optimisation, with a particular focus on humidity and temperature sensing technologies. You will play a key part in refining performance, reliability, and integration within sophisticated systems, contributing directly to product development from concept through to validation.
This is a hands‑on engineering role suited to someone who enjoys solving complex technical challenges and working closely with hardware, software, and mechanical engineers in a fast‑paced R&D environment.
Key Responsibilities
- Characterise, test, and optimise sensor performance, particularly metal oxide and electrochemical sensors
- Design, develop, and iterate electronic circuits and PCB layouts
- Support firmware development for hardware interfacing and system integration
- Collaborate cross‑functionally to ensure seamless integration across electronics, firmware, and mechanical components
- Contribute to prototyping, validation, and performance tuning of advanced sensing systems
Core Skills & Experience
- Strong background in electronic engineering, including PCB design and development
- Experience working with electrochemical or metal oxide sensors
- Solid embedded firmware capability (not necessarily specialist level), including:
- Hardware interfacing
- Communication protocols (e.g. LoRaWAN or similar)
- Proven experience taking products from development through to testing or deployment
Highly Desirable
- Experience working with volatile organic compounds (VOCs)
- Knowledge of air sampling systems or environmental sensing
- Background in healthcare, life sciences, or medical device development
Why Apply?
- Work on cutting‑edge sensing technologies with meaningful real‑world applications
- Join a highly skilled, multidisciplinary team in a collaborative environment
- Opportunity to make a tangible impact on product performance and innovation
- Flexible working arrangements and a strong likelihood of contract extension
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