Senior Test Engineer – Test & Evaluation

Four Sea Group is a 100% employee-owned technical mission support company based in Denver, Colorado. Founded by an aerospace industry veteran and PhD astrophysicist, we support complex defense, space, software, systems, and mission-focused programs for government and industry partners. What sets FSG apart is the caliber of our people and the way we operate: we are a reputation-driven team of highly skilled engineers and technical experts who are brought in for their depth, judgment, and ability to solve difficult problems.

As an employee-owned company, we have built our compensation, benefits, and culture around a simple idea: when the company succeeds, that value should go back to the people doing the work.

Four Sea Group is seeking a Senior Test Engineer specializing in Test & Evaluation (T&E) to support the planning, execution, analysis, and documentation of complex system testing in secure customer environments.

This role contributes to Four Sea Group's ability to deliver dependable, mission-ready capabilities by ensuring systems are evaluated against defined requirements, operational needs, and performance expectations. The engineer will independently support defined T&E efforts, develop and execute test plans and procedures, analyze results, identify technical issues, and provide clear recommendations that improve system quality, reliability, and readiness.

The ideal candidate brings strong systems-level understanding, disciplined test and evaluation experience, and the ability to collaborate across engineering, program, customer, and test organizations. This role requires practical technical judgment, attention to detail, and the ability to translate requirements, concepts of operations, and system descriptions into meaningful evaluation criteria and executable test activities.

• Bachelor’s degree in Engineering, Systems Engineering, Computer Science, Mathematics, Physics, or another relevant technical field, or equivalent practical experience.
• Typically 6+ years of relevant experience in test and evaluation, systems integration, verification and validation, systems engineering, or another mission-focused technical environment.
• Active TS/SCI security clearance at the time of hire.
• Experience with GEOINT workflows.
• Experience with system-of-systems testing.
• Experience with test automation software such as JMeter, JUnit, Test Complete, or comparable tools.
• Experience analyzing system requirements, concepts of operations, system descriptions, or comparable technical documentation to develop test and evaluation approaches.
• Experience developing, maintaining, and executing test plans, test procedures, test cases, or evaluation criteria.
• Experience collecting, analyzing, interpreting, and documenting test data and technical results.
• Ability to identify functional or performance problems, investigate contributing factors, and recommend practical corrective actions.
• Experience evaluating automated test results and confirming system behavior against expected outcomes.
• Experience supporting test readiness activities, demonstrations, formal test events, or comparable evaluation activities.
• Ability to document test status, results, risks, impediments, and recommendations for technical and program stakeholders.
• Experience coordinating test activities across engineering disciplines or external test organizations.
• Understanding of quality, reliability, verification, validation, and configuration-controlled test practices.
• Ability to independently lead defined test and evaluation efforts within an assigned technical scope.
• Strong technical writing, analytical, and verbal communication skills.

• Experience supporting U.S.…