Senior Optical Engineer - Stray Light
Xcimer Energy
Job Description
Job Description
Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change. Join us in powering a better world with inertial fusion!
This is a full-time, onsite role based at our headquarters in Denver, CO.
As a Senior Stray Light Optical Engineer , you will be the primary technical authority on non-sequential ray tracing and stray light mitigation. Your work will focus on modeling and designing complex optical layouts to identify and mitigate ghosts, hot spots, fringing effects, and other parasitic light paths that could degrade system performance or cause optical damage.
In this highly collaborative role, you will work closely with sequential optical designers, opto-mechanical engineers, material scientists, and optical systems engineers. You will implement mechanical feature models (e.g., baffles, beam dumps) directly into non-sequential software to validate their effectiveness. You will also write custom scripts to automate complex analyses and process large datasets, ensuring our high-energy DUV systems operate safely and efficiently.
Responsibilities- Perform comprehensive non-sequential ray tracing (primarily using FRED software) to analyze stray light, ghost reflections, scattering, and diffraction in high-energy DUV laser systems.
- Identify and mitigate high-fluence "hot spots" and fringing effects to prevent optical damage and ensure system longevity.
- Implement and evaluate mechanical feature models (such as baffles, apertures, and beam dumps) within non-sequential environments to actively mitigate stray light.
- Write and maintain custom scripts (e.g., Python, MATLAB, or FRED script) to automate ray trace simulations, process large datasets, interface to other analysis tools and quantify system-level signal degradation.
- Collaborate cross-functionally with sequential optical designers to optimize system layouts for stray light performance.
- Work closely with opto-mechanical engineers to design and validate physical stray light mitigation hardware.
- Partner with material scientists to evaluate Bidirectional Scattering Distribution Functions (BSDF/BRDF), surface roughness, and specialized UV-resilient absorptive coatings/materials.
- Collaborate with Optical Systems Engineers to ensure stray light requirements are defined, met, and verified at the system level for ICF applications.
- Education: B.S. or M.S. degree in Optical Engineering, Physics, or a closely related field.
- Experience: 5+ years of dedicated experience in stray light analysis and non-sequential optomechanical modeling.
- Expert-level proficiency in non-sequential optical design software, with a strong preference for FRED.
- Demonstrated experience writing scripts to automate optical analysis and process ray trace data.
- Strong understanding of stray light mitigation techniques, including the implementation of mechanical features (baffles, beam dumps) in optical models.
- Solid foundation in physical optics, scattering (BSDF/BRDF), and diffraction.
- Proven ability to work in a cross-collaborative environment with multi-disciplinary engineering teams.
- Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.
- Ph.D. in Optical Engineering, Physics, or related field.
- 8+ years of experience in stray light analysis for high-energy laser systems or deep UV (DUV) applications.
- Experience with Laser Induced Damage Thresholds (LIDT) and material fluorescence in the DUV regime.
- Specific experience working on laser systems for Inertial Confinement Fusion (ICF) or similar high-fluence beam delivery systems.
- Familiarity with stray light measurement instrumentation (e.g., scatterometers) to correlate empirical data with simulation models.
- Experience importing and managing complex CAD geometry within FRED or other non-sequential optical simulation environments.
Candidates may be considered for other positions at Xcimer Energy, and our actual base salary will be determined on an individual basis and may vary based on job-related knowledge and skills, education, and experience. The range is published in accordance with Colorado Equal Pay for Equal Work Act and California Equal Pay Act.
Equal Employment Opportunity
Xcimer Energy is proud to be an Equal Opportunity/Affirmative Action Employer and is committed to attracting, retaining, and developing a highly qualified, diverse, and dedicated work force. Xcimer Energy hires and promotes people on the basis of their qualifications, performance, and abilities. We support the establishment and maintenance of a workplace that fosters trust, equality, and teamwork, in which all employees recognize and appreciate the diversity of individual team members. We provide all qualified applicants for employment and employees with equal opportunities for hire, promotion, and other terms and conditions of employment, regardless of their race, color, religion, gender, sexual orientation, gender identity, national origin/ethnicity, age, physical or mental disability, genetic factors, military/veteran status, or any other status or characteristic protected by federal, state, and/or local law. Xcimer Energy will consider for employment qualified applicants with criminal histories in a manner consistent with applicable federal, state, and local laws. For more information on “EEO Is the Law,” please see here and here.
Benefits
Xcimer offers a comprehensive benefits package designed to support employee health, well-being, and long-term success. Benefits include medical, dental, and vision coverage; basic and supplemental life insurance; short- and long-term disability; paid parental leave for employees at the time of birth or adoption; and a 401(k) with a company match of up to 6%. Eligible employees also receive equity, allowing them to share in the company’s long-term success.
Xcimer operates under a flexible Paid Time Off (ATO) approach. Rather than a fixed number of vacation days, employees are trusted to take the time they need to rest and recharge while meeting the expectations of their role and team. In addition, employees receive paid sick time, 13 company-paid holidays, and an annual paid company shutdown. Benefits are available to regular employees, including part-time and fixed-term roles, as well as interns, with eligibility varying by benefit.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
$136.76k - $160k
...Senior Optical Engineer Location: Onsite in Broomfield, Colorado Compensation: 136,764 to 160,000 USD base salary, plus bonus, equity... ...as lenses, beam shaping optics, collimators, detectors and light sources Modeling, Simulation and Requirements Conduct...SeniorPermanent employmentRelocation package$76 per hour
Mindrift is seeking specialists to design original optics problems simulating real physics research workflows. This project-based role offers an opportunity to contribute to meaningful AI applications in a flexible manner. Ideal candidates will hold a degree in Physics...SuggestedHourly payFreelanceFlexible hours$65.86 - $132.21 per hour
...A major aerospace company is seeking a Senior Principal Engineer, Systems Engineering for a temporary position in Aurora, CO. This role involves supporting deployed systems, conducting system engineering tasks, and training junior staff. Candidates must have a university...SeniorHourly payTemporary work- ...Senior Director, Principal Gifts About the Company Philanthropic organization supporting Indigenous culture & individuals Industry Non-Profit Organization Management Type Non Profit Founded 2017 Employees 11-50 Categories ~ Non-Profit &...Senior
- ...our headquarters in Denver, CO. As the Director of Laser Engineering , you will lead the development, scaling, and... ...level performance analysis. Partner cross-functionally with optics engineering, optomechanical engineering, pulsed power, materials...SuggestedPermanent employmentFull timeTemporary workPart timeFixed term contractLocal areaFlexible hours
- ...world with inertial fusion! This is a full-time, onsite role based at our headquarters in Denver, CO. As an Optical Control Systems Engineer , you will play a critical role in the design, implementation, and validation of precision optical control systems...Permanent employmentFull timeTemporary workPart timeFixed term contractLocal areaFlexible hours
- ...Tract Capital Management seeks a Senior Principal Power Generation Architect Engineer in Denver, CO, who will act as the technical authority for on-site power generation solutions across mega-scale data center campuses. The role entails leading design reviews, defining...Senior
- Avenue Technologies Company is seeking a Principal Software Engineer in Aurora, Colorado. This role involves designing, developing, and maintaining software for advanced test equipment used across engineering labs. Candidates must have a BS degree in Computer Science or...Senior
- Delta Light Group North America in Denver, Colorado, is seeking a Mechanical Engineer II responsible for the design and development of lighting products for residential and commercial markets. The ideal candidate will have a Bachelor of Science in Mechanical Engineering...
- ...Senior Principal Recruiter (Security) Code Red Partners Code Red helps tech startups to protect their products, their data, and their customers. We partner with unicorn tech startups like Databricks, Perplexity, Stripe etc to help them to build award-winning cybersecurity...SeniorWork at officeHome office
- Optical Network Engineer Location: Anywhere (Remote) Type: Contract Industry: Communications Workplace Type: Remote Rate: $90,000 to $110,000/yr. w2 Responsibilities Support technical efforts that enhance the client experience across optical transport services....Contract workRemote workFlexible hours
- A leading energy analytics company is seeking a Senior-to-Principal Analyst for its Intelligence Advisory Services in Denver. This role involves analyzing large data sets and delivering actionable insights to clients in a dynamic sector. Candidates should have a relevant...Senior
- Signify is looking for a Product Development Engineer for their Connected Buildings, Architectural Products Group team in Aurora, CO. The role involves end-to-end development of luminaires, product design, and collaboration with various stakeholders to ensure compliance...
$100k - $130k
...Espinoza Consulting Services (ECS) is accepting resumes for a Senior Principal Investigator . The ideal candidate will have a research focus and extensive consulting experience in the Pacific Coast, Great Basin, and/or Southwest. This is a remote position, but the candidate...SeniorFull timeWork at officeLocal areaRemote work$132k - $176k
...and consistently coordinate an integrated account strategy across the core account team (Account Executive, Services Sales, Sales Engineering, Business Value, Marketing, Customer Success, etc.). Churn Reduction & Renewal Strategy: Proactively identify and mitigate...SeniorLocal areaWorldwideFlexible hours$38 - $42 per hour
...Lighting Technician Salary Range $38.00 - $42.00 Hourly Job Scope As a Lighting Technician, you will be responsible for installing lighting products safely and neatly in customer's facilities. The ideal candidate will possess a high level of professional customer...Hourly payFull timeLocal areaMonday to FridayNight shiftWeekend work$101.58k - $148.97k
About the Role Product Development Engineer in the Connected Buildings, Architectural Products... ...product meets photometric, cosmetic, optical, electrical, mechanical, cost, safety,... ...disability, protected veteran, or marital status. #J-18808-Ljbffr Philips Lighting Spain SL.Flexible hours- ...community? Do you put service to others before yourself and strive for excellence in all you do? This is what it takes to be a Senior Doctor. Its kind of a high bar, but hey, $535,000 is a lot of money. We ask for a lot, because we are paying a lot. If you think...Senior
$24.91 - $31.14 per hour
...people every day Diverse community Competitive total compensation package Well-Funded General Employees Retirement Plan Light rail station minutes away On-site fitness center and overall employee well-being programs Internal educational programs to assist...Hourly payLocal area$108.5k - $149.18k
Optical Test and Measurement Engineer III page is loaded## Optical Test and Measurement Engineer IIIremote type: In officelocations: Lone Tree, COtime... ...components, systems, and devices under the guidance of senior engineers.* Operate and maintain optical test equipment...For contractorsWork experience placementWork at officeImmediate start- ...Job Description Job Description Description:Permanent Lighting Technician Denver, CO Job Overview: Ambia Energy is a leader in the renewable energy sector and home improvement sector, committed to providing sustainable solutions while delivering an unparalleled...Permanent employmentWork from home
- ...oil and gas assets and allocating capital towards the right acquisitions are key elements of the finance function at Phoenix. The Senior Associate, Capital Markets will be working closely with the MD of Capital Markets and CFO with a focus on raising capital via the Regulation...Senior
- ...Job Description Job Description Senior Litigation Counsel (Business & Real Estate) Remote | Denver, CO Competitive Compensation | Supplemental Practice Opportunity The Staff Pad has partnered with a rapidly growing, multi-state law firm recognized for...SeniorContract workRemote workFlexible hours
$180k - $220k
...powers complex attack simulations, using appropriate languages and technologies for each use case Collaborate closely with R&D, engineering, and product teams to integrate new research into the platform Mentor team members and contribute to a culture of technical...SeniorWork at officeRemote workWorldwide- ...the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead... ...meaningful problems that create a safer, more secure world. As a Senior. Principal Platform IAC Engineer , you will be leading a...SeniorWork experience placementRelocation
$76 per hour
Please submit your CV in English and indicate your level of English proficiency. Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation is project-based, not ...Hourly payPermanent employmentTemporary workFreelance10 hours per week$109.2k - $223.4k
...Overview: Oracle Cloud Infrastructure (OCI) is seeking a Senior Principal Technical Program Manager (IC5) to join our high-impact... ...timelines Drive cross-functional coordination across engineering, construction, networking, and operations Establish program...SeniorTemporary workFlexible hours- Job Description Job Description We utilize a strategic sales system of project pursuit and superior technical knowledge to gain an advantage over our competition. You’ll enjoy top-notch benefits and pay while working for a respected company. HRL is based in Commerce...SeniorTemporary workWork at officeRemote work
- ...company in Greenwood Village is seeking a Software Architect Senior with extensive experience in software design and leadership. The... ...design principles, and have a proven track record in software engineering. This role offers competitive benefits and the opportunity to...Senior
$70k - $88.67k
...you’re looking for. This position is for a transmission line engineer based in Denver Colorado. The position performs detailed... ...Training/Fundamentals of Engineering) strongly preferred. Senior Engineer Level (Salary Range: $97,000-$129,267) Minimum Requirements...SeniorTemporary workFor contractors
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Optical Engineer - Stray Light. Be the first to apply!
- optical coating engineer Denver, CO
- electro-optical engineer Denver, CO
- senior cost analyst Denver, CO
- senior electrical estimator Denver, CO
- senior development engineer Denver, CO
- senior program specialist Denver, CO
- senior manager quality engineering Denver, CO
- senior software test automation engineer Denver, CO
- senior design technologist Denver, CO
- senior design verification engineer Denver, CO



