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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Environmental Test Engineer III (Clearance Required) - **Company:** Sierra Space - **Location:** Broomfield, CO, United States - **Experience:** Expert - **Salary:** $112,694.0 - $154,975.0 - **Contract:** Permanent contract - **Skills:** Testing (Software), LabVIEW, MATLAB, Requirements Management, Software Requirements Analysis, Verification and Validation (Software), Systems Integration, Technical Data Management Systems, Test Data, Teststand, Test Scripts, MIL-STD-810 Environmental Testing - **Published:** August 25, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9116217/environmental-test-engineer-iii-clearance-required ## About the Role * Requires Bachelor's degree in a related field (or equivalent work experience in lieu of degree or Masters +3 yrs experience). * Typically 5+ years of related experience. * The ability to obtain and maintain a Top Secret U.S. Security Clearance is required. * General expertise in one area of test engineering principles and practices (dynamics, thermal, measurement, HSI, SW Test, Integration, etc.). * Ability to effectively work in multi-disciplinary design and development teams. * Experience with requirements management, system design, and systems integration. * Experience planning, conducting, and documenting Verification and Validation (V&V) activities. * Ability to read/interpret schematics, use service manuals, follow test procedures, and use logical troubleshooting techniques. * General expertise with various testing equipment, standards, and methodologies. Preferred Qualifications: * Proficiency with advanced engineering software tools such as LabVIEW, MATLAB, or TestStand for testing and validation. * Hands-on experience with environmental test equipment such as shaker/vibration tables, shock test fixtures, thermal chambers, thermal vacuum (TVAC) chambers, and associated data acquisition systems. * Experience developing or executing shock, random/sine vibration, thermal cycling, and thermal vacuum test procedures for satellite or spacecraft hardware, including qualification and acceptance test campaigns. * Familiarity with aerospace environmental test standards such as NASA GEVS-SE, MIL-STD-1540, MIL-STD-810, or equivalent customer-imposed environmental specifications. * Experience with instrumentation for environmental testing, including accelerometers, thermocouples, strain gauges, and vacuum/thermal control systems. * Understanding of spacecraft/satellite launch and on-orbit environments (acoustic, random vibration, shock, thermal extremes, vacuum) and their influence on test article design and test planning. * Strong organizational skills with the ability to manage multiple tasks and priorities effectively. * Demonstrated ability to rapidly learn and apply new concepts and methodologies in test engineering. * Commitment to continuous learning and professional development in aerospace engineering. * Strong leadership and collaboration skills to work effectively within cross-functional teams and lead initiatives. * Excellent communication skills to clearly and effectively convey complex technical information to diverse audiences. * Proven problem-solving skills and the ability to develop and implement innovative solutions to technical challenges. * Experience in representing the organization to external stakeholders, such as suppliers, partners, and industry bodies. ## Description As an Environmental Test Engineer III at Sierra Space, you will leverage your extensive experience and general expertise in specific areas of test engineering to lead and contribute to advanced testing and validation of aerospace systems and components, including satellites and spacecraft. You will play a key role in planning and executing environmental test campaigns - including shock, vibration, thermal, and thermal vacuum (TVAC) testing - to verify that flight hardware and subsystems can survive the launch and on-orbit space environment. You will work under general direction to independently develop approaches to solve technical problems and provide guidance to less experienced engineers. Representing Test Engineering, you will play a critical role in requirements management, system design, and the execution of Verification and Validation (V&V) activities., * Lead and execute complex and professional test plans, test procedures, and test reports to demonstrate compliance with system requirements. * Plan, set up, and execute environmental test campaigns for satellites, spacecraft, and space hardware, including: + Shock testing to verify hardware survives pyrotechnic events, separation shocks, and other transient high-frequency loads. + Vibration testing (sine, random, and sine burst) to simulate launch vehicle acoustic and dynamic loads and verify structural integrity and workmanship. + Thermal testing to verify performance and survival across qualification and acceptance temperature ranges representative of mission environments. + Thermal vacuum (TVAC) testing to verify functional performance, outgassing, and thermal balance/thermal cycling under vacuum conditions representative of the space environment. * Apply expertise in specific areas of test engineering principles and practices, such as dynamics, thermal, measurement, HSI, software testing, and integration, to solve broad technical problems. * Develop and review environmental test plans, procedures, and success criteria in accordance with program requirements and industry/customer standards (e.g., NASA GEVS, MIL-STD-1540, MIL-STD-810). * Coordinate with facilities and test operations teams to schedule and configure shaker tables, shock test fixtures, thermal chambers, and thermal vacuum chambers, including instrumentation and data acquisition setup (accelerometers, thermocouples, strain gauges). * Monitor test articles during shock, vibration, thermal, and TVAC testing to detect anomalies, halt testing when necessary, and support root-cause investigation of test failures or anomalies. * Work effectively in multi-disciplinary design and development teams, providing guidance and direction to less experienced engineers while independently determining and developing approaches to testing solutions under general direction. * Represent Test Engineering in requirements management, system design, and systems integration, ensuring effective system performance and validation. * Represent Test Engineering in the planning, conducting, and documenting of Verification and Validation (V&V) activities, including environmental qualification and acceptance test campaigns. * Handle the generation and disposition of test-related product non-conformances while adhering to quality assurance principles. * Read and interpret schematics, use service manuals, follow test procedures, and apply logical troubleshooting techniques to resolve complex testing issues. * Utilize various testing equipment, standards, and methodologies - including vibration/shock test systems, thermal and thermal vacuum chambers, and associated data acquisition systems - to support validation efforts and ensure the quality of aerospace systems and components. * Prepare and document detailed technical data, test reports, and analyses (including test data correlation to analytical predictions) to support engineering initiatives and project decision-making. * Communicate technical concepts and information clearly to team members, senior engineers, and stakeholders to ensure effective collaboration and successful project outcomes. ## Related Videos - [Dirty Tests And How To Clean Them](https://www.wearedevelopers.com/videos/515-dirty-tests-and-how-to-clean-them) - [Leveraging Large Language Models for Legacy Code Translation: Challenges and Solutions](https://www.wearedevelopers.com/videos/1157-leveraging-large-language-models-for-legacy-code-translation-challenges-and-solutions) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - 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