FULL_TIME

FEED

OTHER

You will work at the intersection of materials science, high temperature processing, and high-speed manufacturing, solving complex engineering problems and driving improvements with the opportunity to influence future fiber platform developments. In this role, you will take ownership of fiber draw tower processes for R&D product and process development, optimizing the conversion of glass preforms into high-performance optical fiber used in next-generation communications, industrial, and photonics systems.

Key ResponsibilitiesTechnology Development <ul><li>Support new fiber product introductions, including specialty fibers and next-generation communications fibers.</li><li>Lead scale-up of new preform designs and materials from development to full production.</li><li>Partner with R&D scientists and engineers to translate fiber innovations into manufacturable processes.</li></ul> Process Ownership & Optimization <ul><li>Own and optimize fiber draw tower processes for novel development projects, including furnace thermal profiles, draw tension control, diameter control systems, coating application, and UV curing.</li><li>Optimize key performance metrics including fiber attenuation, geometry, concentricity, coating adhesion, proof strength, and yield.</li><li>Design and execute Design of Experiments (DOE) to improve process robustness and product performance.</li><li>Lead root cause investigations and partner with equipment, manufacturing, and quality teams to drive continuous improvement</li></ul>Cross-Functional Leadership <ul><li>Collaborate with materials science, optics, polymer chemistry, equipment engineering, and quality teams.</li></ul>Required Qualifications <ul><li>BS/MS/PhD in Materials Science, Chemical Engineering, Mechanical Engineering, Applied Physics or related field.</li><li>3+ years of experience in optical fiber manufacturing, fiber draw process engineering, or related high-precision thermal manufacturing.</li><li>Strong data analysis, troubleshooting, and process optimization skills</li><li>Typically requires a minimum of 5 years of related experience with a Bachelor's degree; or 3 years and a Master's degree; or a PhD without years experience</li></ul> Preferred QualificationsExperience with draw towers, coating systems, and fiber process control Safety Requirements All employees are required to follow the site EHS procedures and Coherent Corp. Corporate EHS standards. Quality and Environmental Responsibilities Depending on location, this position may be responsible for the execution and maintenance of the ISO 9000, 9001, 14001 and/or other applicable standards that may apply to the relevant roles and responsibilities within the Quality Management System and Environmental Management System. Culture Commitment Ensure adherence to company's values (ICARE) in all aspects of your position at Coherent Corp.:Integrity - Create an Environment of TrustCollaboration - Innovate Through the Sharing of IdeasAccountability - Own the Process and the OutcomeRespect - Recognize the Value in EveryoneEnthusiasm - Find a Sense of Purpose in WorkCoherent Corp. is an equal opportunity/affirmative action employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law. If you need assistance or an accommodation due to a disability, you may contact us at talentacquisition@coherent.com .Coherent is a global leader in lasers, engineered materials and networking components. We are a vertically integrated manufacturing company that develops innovative products for diversified applications in the industrial, optical communications, military, life sciences, semiconductor equipment, and consumer markets. Coherent provides a comprehensive career development platform within an environment that challenges employees to perform at their best, while rewarding excellence and hard-work through a competitive compensation program. It's an exciting opportunity to work for a company that offers stability, longevity and growth. Come Join Us! Note to recruiters and employment agencies: We will not pay for unsolicited resumes from recruiters and employment agencies unless we have a signed agreement and have required assistance, in writing, for a specific opening.Job Summary: We are seeking an Optical Fiber Draw Process Engineer to lead innovation and optimization of R&D optical fiber draw processes in a high-volume manufacturing environment. In this role, you will take ownership of fiber draw tower processes for R&D product and process development, optimizing the conversion of glass preforms into high-performance optical fiber used in next-generation communications, industrial, and photonics systems.You will work at the intersection of materials science, high temperature processing, and high-speed manufacturing, solving complex engineering problems and driving improvements with the opportunity to influence future fiber platform developments.

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Coherent Corp.

Optical Fiber Draw Process Engineer

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In addition, you will collaborate with Chief Engineers, Design Engineers, and other cross-functional team members to help define critical data and insights needed to inform engine architecture and design decisions. You will work closely within a team of Test Engineers, Technicians, and Performance Engineers as you develop engine calibration strategies and methodologies to meet performance targets.

Senior Engineer - Performance & Calibration This role is fully onsite in Bloomfield, CT, five days per week, and the company will be relocating to Suffield, CT later in 2026. About LiquidPiston: LiquidPiston is redefining the internal combustion engine through its innovative rotary X-engine architecture. Our mission is to deliver compact, fuel-efficient, high power-density engines for a wide range of applications. We are seeking a highly motivated Senior Engineer – Performance & Calibration to help bring our advanced rotary engines to production. Position Summary: As Senior Engineer – Performance & Calibration you will be a key contributor to engine performance development activities aimed at bringing LiquidPiston’s rotary engines to production. You will work closely within a team of Test Engineers, Technicians, and Performance Engineers as you develop engine calibration strategies and methodologies to meet performance targets. In addition, you will collaborate with Chief Engineers, Design Engineers, and other cross-functional team members to help define critical data and insights needed to inform engine architecture and design decisions. A broad range of experience and skills, along with the ability to adapt quickly from one task to another, will be essential for success. This role places strong emphasis on engine calibration supported by deep knowledge of engine performance, efficiency, testing, and data analysis. The position requires a solid foundation in thermal sciences and engineering principles, and the ability to work collaboratively with analysts using tools such as GT Power and combustion CFD platforms. You will also contribute to continuous improvement initiatives aimed at increasing the efficiency and effectiveness of simulation and development work. Responsibilities:<ul><li>Perform engine calibration to meet targets for power, efficiency, emissions, transient response, and off-nominal operating conditions.</li><li>Develop efficient processes and methods for engine calibration tailored to the rotary X-engine platform.</li><li>Document and communicate results of calibration efforts clearly and effectively.</li><li>Design and execute engine test plans for performance development, including analysis and reporting of results.</li><li>Collaborate with analysts running GT Power, combustion CFD, or other simulation tools to support holistic, model-based development approaches.</li><li>Work closely with cross-functional design and test teams to drive engine improvements and support design decisions.</li><li>Develop and follow standardized test and calibration procedures specific to LiquidPiston’s engine architecture.</li><li>Contribute to continuous improvement efforts that enhance testing efficiency, simulation accuracy, and overall development effectiveness.</li><li>Stay current with emerging engine technologies, calibration strategies, and simulation tools through self-directed learning and formal training.</li></ul>Requirements:<ul><li>PhD or MS in Mechanical Engineering (BS with significant relevant experience will also be considered).</li><li>Strong grasp of thermodynamics, physics, combustion, and engine efficiency principles.</li><li>Demonstrated engine testing and calibration experience.</li><li>Proficiency with MATLAB, CAN communication tools, Python, or other scripting languages.</li><li>Strong problem-solving and analytical skills.</li><li>Strong team player with the ability to be self-directed in a fast-paced development environment.</li></ul>Beneficial:<ul><li>Experience with simulation tools including GT Power, CONVERGE, and ANSYS Fluent.</li><li>Familiarity with optimization methods, especially as applied to engine development and calibration.</li></ul>Benefits & Perks:<ul><li>Flexible PTO: We value work-life balance and encourage time to rest and recharge.</li><li>Health & Wellness: Comprehensive medical, dental, and vision coverage. You choose what works best for you.</li><li>Equity Participation: Permanent employees receive RSUs to share in our success.</li><li>401(k) Match: We offer a 401k w/100% matching up to 3% of your salary and then 50% of contributions between 3-5%</li><li>Career Growth: Ongoing training, mentorship, and learning opportunities to accelerate your growth.</li></ul>Our Culture: At LiquidPiston, we embrace challenges, move fast, and celebrate curiosity. Our team thrives on collaboration, creativity, and perseverance. We understand that innovation involves risk and we’re not afraid to fail forward. Equal Opportunity Employer: LiquidPiston, Inc. is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability. All offers of employment at LiquidPiston are contingent upon the successful completion of a pre-employment background check and drug screening.Powered by JazzHR

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Optical Fiber Draw Process Engineer Coherent Corp.

Engine Performance Engineer LiquidPiston

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