# Optical Coating Engineer (f/m/d) at Innolume > Location unclear · Unspecified · Software engineering · open. Source: https://alderhq.app/jobs/personio%3Ainnolume%3A2774969 (read 2026-11-14). ## Facts (observed) - Company: [Innolume](https://alderhq.app/companies/innolume) - Location text: Innolume GmbH; Innolume GmbH TMM - Where it can be done from (inferred): Location unclear (evidence: "Location: Innolume GmbH; Innolume GmbH TMM") - Posted: 2026-08-31 (75 days ago) - First seen by alder: 2026-11-07 · last verified: 2026-11-08 - Reposted: 0 times · edited: 0 times - Apply on the employer's site: https://innolume.jobs.personio.de/job/2774969 ## Pay and sponsorship - Posted pay: not posted - Recognised sponsor (NL): registered as "Innolume B.V." (checked 2026-11-09, [register](https://ind.nl/en/public-register-recognised-sponsors/public-register-regular-labour-and-highly-skilled-migrants)) ## Description (the employer's text) ### Your mission - Develop and optimize optical thin-film and facet coating processes for optoelectronic semiconductor devices - Take technical ownership of facet coating equipment, including maintenance coordination, measurement processes and failure analysis - Design and simulate thin-film stacks based on anti-reflection (AR) requirements and the optical properties of coating materials - Measure and characterize thin films using ellipsometry, SEM, profilometry and related metrology methods - Develop specialized passivation and thin-film coating concepts for different laser diode facets - Apply structured experimentation and statistical process control (SPC) to improve process capability, quality and yield - Improve coating and stacking processes, including related hardware and software - Transfer new coating processes and technologies from development into stable production - Analyze technical failures, troubleshoot complex process and equipment issues and implement sustainable solutions - Collaborate closely with Production, R&D, Quality, IT and other engineering teams - Prepare technical and process documentation, including development plans, engineering reports, SOPs and work instructions - Train and support production teams on assigned equipment and processes - Support engineering changes, deviation processes, quality assurance and continuous improvement initiatives - Ensure compliance with applicable EHS requirements and company standards ### Your profile - Bachelor's or Master's degree in Optics, Physics, Materials Science, Optical Engineering or a related - technical field - Professional hands-on experience in optical thin-film coating and related process engineering - Strong knowledge of optical coating design, thin-film stacks and anti-reflection coating concepts - Experience with coating equipment, vacuum systems and thin-film measurement or characterization - tools - Hands-on experience with ellipsometry and other relevant metrology methods - Strong analytical, troubleshooting and problem-solving skills - Ability to independently manage technical projects while collaborating effectively with multidisciplinary - teams - Willingness to work closely with production teams and provide hands-on on-site support - Fluent English language skills, both written and spoken Nice to have - Experience with thin-film design and simulation software, preferably Macleod - Experience with facet coating or passivation processes for laser diodes or other optoelectronic devices - Knowledge of SPC, Design of Experiments (DoE) and statistical data analysis - Experience with SEM, profilometry and advanced thin-film characterization - Experience improving or automating coating and stacking equipment, including related hardware and software - Experience transferring engineering processes into volume production - German language skills are an advantage ### Why us? ### Shape the future of optical coating for Photonic Semiconductor devices Location: Dortmund, Germany \| Full-time (40 hours/week) \| Permanent Join Innolume At Innolume, we develop innovative optoelectronic semiconductor technologies for next -generation communication, sensing and photonic applications. Our expertise ranges from advanced quantum-dot and quantum-well technologies to customized photonic devices tailored to our customers' requirements. To strengthen our Engineering team, we are looking for an experienced Optical Coating Engineer (m/f/d) who is passionate about optical thin-film technologies and turning advanced coating concepts into robust, production-ready processes. In this role, you will take technical ownership of facet coating equipment and processes - from thin-film design and process development to characterization, troubleshooting and transfer into stable production. You will work hands-on with coating and measurement systems and collaborate closely with Production, R&D, Quality and other engineering teams. If you enjoy combining optics, materials science and process engineering and want to see your solutions make a tangible impact in photonic semiconductor manufacturing, we would love to meet you. - A permanent position in an innovative and international high-tech environment - The opportunity to work at the forefront of photonics and semiconductor technology - Hands-on responsibility for coating technologies and processes from development through industrialization - Challenging projects with a high degree of technical ownership and room to contribute your own ideas - Close collaboration with experienced colleagues across R&D, Engineering, Quality and Production - Individual internal and external training and professional development opportunities - Flexible working hours in a collaborative working environment - 30 days of annual leave - Attractive additional benefits, including company parking, company events, free beverages and fruit - Gift vouchers for special occasions such as birthdays - Additional benefits after successful completion of the probationary period, including commuting allowance, mobility support, meal subsidies and other attractive perks --- Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/personio%3Ainnolume%3A2774969 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.