Salary
$133k – $161k per year
Location
In office (Westminster)
Seniority
Senior · 5+ years exp
Visa
H-1B filings in 12 months: 2
Employment
Full-Time
Confirmed on the employer's own hiring board on Oct 13, 2026. First seen by Alion on Oct 12, 2026. CesiumAstro scores A on the Alion truth index.
Overview
Company
Impact
Profile match
CesiumAstro is an American company founded in Austin in 2017 that builds active phased array communications payloads for satellites, aircraft and defence platforms. Its systems are software-defined and electronically steered, which lets a moving platform track several links at once without mechanical antennas, and the company manufactures them in house rather than integrating third-party subsystems. It sells mainly to defence customers and satellite operators, has raised venture funding from investors including Airbus Ventures and Lightspeed, and operates facilities in Austin, Colorado and the United Kingdom.
Backed by Techstars, Kleiner Perkins, Capital Innovators
We are looking for a highly skilled and experienced Senior EMI/EMC (Electromagnetic Interference/Electromagnetic Compatibility) Engineer I to join our engineering team in the aerospace and defense industry. The ideal candidate will play a critical role in ensuring that our phased array communication systems 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 harsh environments.
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 electronics modules and phased array communication 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, Physics, or a related field.
- Minimum of 5 years of experience in EMI/EMC engineering, preferably within the aerospace and defense industry.
- 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 EMI/EMC compliance for communication systems, particularly phased arrays.
- Strong experience in EMI/EMC test planning and execution.
- Certification in EMI/EMC (e.g. Certified EMC Engineer).
- Familiarity with systems engineering practices and tools (e.g. Jama, DOORS).
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