{"id":3047890,"url":"https://alion.io/job/innolume-optical-coating-engineer-fmd","title":"Optical Coating Engineer (f/m/d)","company":{"id":4412463,"name":"Innolume","domain":"innolume.com","url":"https://alion.io/company/innolume","size_band":"1-10","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Personio","truth_index":null},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":[],"countries":[],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Ellipsometry","optional":false},{"name":"Statistical Process Control","optional":false},{"name":"Design of Experiments","optional":true}],"status":"live","first_seen_at":"2026-08-31T15:32:18Z","employer_posted_date":"2026-08-31","last_verified_at":"2026-11-09T11:39:36Z","board_verified":true,"closed_at":null,"days_open":69,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":69},"description":"Your mission\nDevelop and optimize optical thin-film and facet coating processes for optoelectronic semiconductor devices\nTake technical ownership of facet coating equipment, including maintenance coordination, measurement processes and failure analysis\nDesign and simulate thin-film stacks based on anti-reflection (AR) requirements and the optical properties of coating materials\nMeasure and characterize thin films using ellipsometry, SEM, profilometry and related metrology methods\nDevelop specialized passivation and thin-film coating concepts for different laser diode facets\nApply structured experimentation and statistical process control (SPC) to improve process capability, quality and yield\nImprove coating and stacking processes, including related hardware and software\nTransfer new coating processes and technologies from development into stable production\nAnalyze technical failures, troubleshoot complex process and equipment issues and implement sustainable solutions\nCollaborate closely with Production, R&D, Quality, IT and other engineering teams\nPrepare technical and process documentation, including development plans, engineering reports, SOPs and work instructions\nTrain and support production teams on assigned equipment and processes\nSupport engineering changes, deviation processes, quality assurance and continuous improvement initiatives\nEnsure compliance with applicable EHS requirements and company standards\nYour profile\nBachelor's or Master's degree in Optics, Physics, Materials Science, Optical Engineering or a related\ntechnical field\nProfessional hands-on experience in optical thin-film coating and related process engineering\nStrong knowledge of optical coating design, thin-film stacks and anti-reflection coating concepts\nExperience with coating equipment, vacuum systems and thin-film measurement or characterization\ntools\nHands-on experience with ellipsometry and other relevant metrology methods\nStrong analytical, troubleshooting and problem-solving skills\nAbility to independently manage technical projects while collaborating effectively with multidisciplinary\nteams\nWillingness to work closely with production teams and provide hands-on on-site support\nFluent English language skills, both written and spoken Nice to have\n\nExperience with thin-film design and simulation software, preferably Macleod\nExperience with facet coating or passivation processes for laser diodes or other optoelectronic devices\nKnowledge of SPC, Design of Experiments (DoE) and statistical data analysis\nExperience with SEM, profilometry and advanced thin-film characterization\nExperience improving or automating coating and stacking equipment, including related hardware and software\nExperience transferring engineering processes into volume production\nGerman language skills are an advantage\nWhy us?\nShape the future of optical coating for Photonic Semiconductor devices\nLocation: Dortmund, Germany | Full-time (40 hours/week) | Permanent\nJoin Innolume\nAt Innolume, we develop innovative optoelectronic semiconductor technologies for next -generation\ncommunication, sensing and photonic applications. Our expertise ranges from advanced quantum-dot and quantum-well technologies to customized photonic devices tailored to our customers' requirements.\nTo 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.\nIn 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.\nYou will work hands-on with coating and measurement systems and collaborate closely with Production, R&D, Quality and other engineering teams.\nIf 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.\nA permanent position in an innovative and international high-tech environment\nThe opportunity to work at the forefront of photonics and semiconductor technology\nHands-on responsibility for coating technologies and processes from development throughindustrialization\n\nChallenging projects with a high degree of technical ownership and room to contribute your own ideas\nClose collaboration with experienced colleagues across R&D, Engineering, Quality and Production\nIndividual internal and external training and professional development opportunities\nFlexible working hours in a collaborative working environment\n30 days of annual leave\nAttractive additional benefits, including company parking, company events, free beverages and fruit\nGift vouchers for special occasions such as birthdays\nAdditional benefits after successful completion of the probationary period, including commutingallowance, mobility support, meal subsidies and other attractive 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