Principal EMI/EMC Engineer II

Company: CesiumAstro
Location: Westminster
Posted on: February 15, 2026

Job Description:

Job Description Job Description Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro , we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team. We are looking for a highly skilled and experienced Principal EMI/EMC (Electromagnetic Interference/Electromagnetic Compatibility) Engineer II to join our engineering team in the space industry. The ideal candidate will play a critical role in ensuring that our space systems, including spacecraft, satellites, and ground support equipment, meet all EMI/EMC requirements and standards. You will work closely with cross-functional teams, including design, test, and systems engineering, to develop, analyze, and implement EMI/EMC control strategies that ensure the integrity and performance of our products in the harsh environments of space. JOB DUTIES AND RESPONSIBILITIES Develop and implement EMI/EMC control plans, including analysis of designs to identify potential interference issues and suggest mitigations. Provide technical guidance to design teams on EMI/EMC considerations, ensuring that all systems comply with relevant standards and performance requirements. Plan, coordinate, and conduct EMI/EMC testing for space systems, including preparing test plans, defining test setups, and performing tests in accordance with relevant standards (e.g., MIL-STD-461, DO-160, ECSS). Utilize simulation tools (e.g., CST Studio Suite, ANSYS HFSS) to model electromagnetic fields and predict potential interference issues at the component, subsystem, and system levels. Ensure that all products meet regulatory requirements and industry standards for EMI/EMC, including documentation, certification, and reporting to stakeholders. Investigate and resolve EMI/EMC-related issues, including conducting root cause analysis and developing corrective actions to address non-compliance or performance shortfalls. Prepare comprehensive reports and technical documentation, including test results, compliance matrices, and design guidelines for internal and external stakeholders. Lead initiatives to improve EMI/EMC design practices, testing methodologies, and tools to enhance overall product quality and performance. Mentor and train junior engineers, providing guidance on best practices in EMI/EMC design and testing. JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS Bachelor’s or Master’s degree in Electrical Engineering, Electromagnetics, Physics, or a related field. Minimum of 11 years of experience in EMI/EMC engineering, preferably within the space, aerospace, or defense industries. Deep understanding of EMI/EMC principles, standards, and regulations (e.g., MIL-STD-461, DO-160, ECSS). Experience with EMI/EMC test equipment and tools (e.g., spectrum analyzers, signal generators, antennas). Proficiency in electromagnetic simulation software (e.g., CST Studio Suite, ANSYS HFSS, FEKO). Knowledge of circuit and system-level design for EMI/EMC mitigation, including shielding, filtering, and grounding techniques. Strong analytical, problem-solving, and troubleshooting skills. Excellent communication and presentation skills, with the ability to explain complex technical concepts to diverse audiences. Ability to work independently and collaboratively in a fast-paced, multidisciplinary environment. PREFERRED EXPERIENCE Experience with spacecraft systems, satellites, or launch vehicles. Certification in EMI/EMC (e.g., Certified EMC Engineer). Familiarity with systems engineering practices and tools (e.g., DOORS, SysML). CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate’s work experience, education/training, and key skills. Full-time employment offers include company stock options and a generous benefits package including health, dental, vision, HSA, FSA, life, disability and retirement plans. CesiumAstro is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law. Please note: CesiumAstro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to CesiumAstro team members will be considered property of CesiumAstro, and we will not be obligated to pay any referral fees. 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.

Keywords: CesiumAstro, Fort Collins , Principal EMI/EMC Engineer II, Engineering , Westminster, Colorado