Optical Test Engineer
The Optical Engineering team develops and characterises the optical systems at the heart of CoMind's non-invasive brain monitoring technology. From light source selection and optical component design through to system-level characterisation and sensor integration, the team works at the boundary of photonics, biomedical engineering, and precision instrumentation, directly determining the signal quality and reliability that power CoMind's clinical algorithms. As an Optical Test Engineer, you will design and execute test plans, build characterisation rigs, develop SOPs, and translate complex measurement data into clear, actionable reports, working closely with research, engineering and manufacturers across the product lifecycle. At CoMind, all team members work at least 4 days per week from our new Kings Cross offices, plus a flexible work-from-home day. RESPONSIBILITIES:
- Design and execute characterisation test plans for optical and optoelectronic components, sub-systems, and complete device assemblies, from initial concept through to manufacturing release
- Build and maintain characterisation systems, including hardware interfacing, instrument control, and automated test routines in Python
- Develop and own Standard Operating Procedures for characterisation methods, ensuring repeatability, traceability, and compliance with medical device quality requirements
- Design and conduct Verification and Validation testing in line with CoMind's design controls, generating the evidence required to support regulatory submissions
- Process and analyse characterisation datasets, extracting meaningful performance insights and identifying failure modes or design risks
- Produce clear, well-structured test reports and technical documentation for both internal stakeholders and regulatory purposes
- Collaborate with optical, electronics, software, and clinical teams to ensure characterisation outputs directly inform product design decisions
- Liaise with laser and photodetector suppliers to exchange analysis of test data
- AI is fundamental to our culture — it's not just a tool, but a core part of how we work, collaborate, and innovate. We expect all team members to embrace AI in their daily work and continuously find new ways to use it effectively.
- Practical and theoretical skills in laser based optics, with hands-on experience in optical and optoelectronic measurements
- Proficiency in Python for instrument control, data acquisition, and automated test routines
- Experience developing and executing Standard Operating Procedures in a technical environment
- Strong analytical skills with the ability to process complex datasets and communicate findings clearly in written reports
- Working knowledge of basic electronic circuits and digital communication protocols
- Experience in a regulated industry (medical devices, aerospace, or similar) with familiarity with V&V processes and design controls
- Background in interferometry, optical coherence, or biomedical optics
- Experience with ISO 13485 or other quality management frameworks.
- Company equity plan so all employees share in the success of the company
- Salary-sacrifice pension scheme
- Private medical, dental and vision insurance (medical history disregarded)
- Group life assurance at 4x annual income
- Comprehensive mental health support, including unlimited access to 1:1 sessions with trained professionals
- Unlimited holiday allowance (+ bank holidays) and one week of remote working per quarter
- Lunch voucher (£10) every day for JustEat and free dinner on those days where you need to work later
- Twice weekly deliveries of fresh fruit and an extensive selection of snacks and drinks
- YuLife subscription, allowing you to turn your daily steps and meditation into discounts at a range of stores
- Access to Udemy for upskilling and professional development.
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