Mechanical Test Engineer II

vast; Long Beach (CA); On-site; USD 112,000 - 159,000; Full time

Job summary

Vast is seeking a Mechanical Test Engineer II to design, build, and operate test rigs and GSE for ECLSS fluid, chemical, and electrical control systems in support of Haven-1 and future space station modules. The role involves hands-on assembly, instrumentation, data collection, and analysis at typical operating pressures.

You will develop test procedures, maintain traceability, and collaborate with manufacturing, REs, technicians, and control teams to ensure test setups reflect design intent and

Qualifications

• Bachelor's degree in Mechanical, Chemical, Aerospace, or Electrical Engineering.
• Hands-on experience with fluid/chemical systems incl. fittings, valves, pumps, sensors.
• Ability to build, operate, troubleshoot test rigs and hardware.
• Create test documentation and maintain test traceability from planning through execution.

Responsibilities

• Design, build, and operate test rigs and GSE for ECLSS systems and campaigns.
• Assemble, integrate, instrument, and test ECLSS hardware (fluid, chemical, electrical) and troubleshoot components.
• Develop and maintain test procedures, work instructions, and hardware documentation with traceability.
• Support Haven-1 flight hardware via Acceptance and Qualification Test Campaigns and R&D testing.
• Design test fixtures, wiring diagrams, and DAQ setups in collaboration with engineers and technicians.
• Assist in transitioning to production-ready test processes and support test readiness reviews.

Skills

Hands-on testing

Test rig development

Python programming

CAD experience

Education

Bachelor's degree in Mechanical, Chemical, Aerospace, or Electrical Engineering

Tools

Siemens NX

Job description

Vast is developing next-generation space stations and space infrastructure using an incremental, hardware-rich, and low-cost approach. Vast is rapidly developing its multi-module Haven Station to ensure a continuous human presence in space for America and its allies, enabling advanced microgravity research and manufacturing, and unlocking a new space economy for government, corporate, and private customers. Haven Demo's 2025 success made Vast the only operational commercial space station company to fly and operate its own spacecraft. Next, Haven-1 is expected to become the world's first commercial space station when it launches in 2027, followed by additional Haven modules. Additionally, the company recently announced Vast Satellite , a high-power satellite product line leveraging its space station components and the heritage of Haven Demo.

Headquartered in Long Beach, California , and with more than 1,000 employees and over a billion dollars in private capital, Vast has built the facilities required to manufacture and operate America's next space station. The company plans to develop future habitats and systems for the Moon and Mars, dedicated space stations for government partners, and other crewed systems that will unlock the expanding long-term space economy.

Vast is looking for a Mechanical Test Engineer II , reporting to the Manager, Test Engineering , to support the development of the systems that will be required for the design and build of human-rated space stations.

This will be a full-time, exempt position located in our Long Beach location.

Responsibilities:

• Design, build, and operate test rigs and GSE for ECLSS fluid, chemical, and electrical control systems, owning specific hardware test campaigns from setup through execution, data collection, and analysis
• Perform hands-on assembly, integration, instrumentation, and testing of ECLSS hardware spanning fluid systems, chemical subsystems, and electrical controls (pumps, valves, sensors, tubing, controls hardware) at operating pressures generally lower than thermal control test systems, including troubleshooting components and supporting root cause investigations of anomalies
• Develop and maintain test procedures, work instructions, and hardware-specific documentation, ensuring test traceability across planning, execution, and post-test data review
• Support Haven-1 flight hardware by contributing to Acceptance and Qualification Test Campaigns and conduct development/R&D testing on ECLSS module and CLD-derived hardware to inform design maturity and manufacturability
• Design test fixtures, wiring diagrams/schematics, and DAQ setups, and collaborate closely with ECLSS Manufacturing Engineers, Responsible Engineers (REs), Test Technicians, and the Controls and Automation team to ensure test setups reflect design intent and meet production-level testing needs
• Contribute to the team's transition from R&D-level testing toward standardized, production-ready test processes, provide technical input during test readiness reviews, and support continuous improvement efforts that boost test efficiency and data quality

Minimum Qualifications:

• Bachelor's degree in Mechanical, Chemical, Aerospace, Electrical Engineering
• Hands-on experience with fluid and/or chemical systems, including fittings, valves, pumps, and sensors, with a working understanding of pressure systems
• Demonstrated ability to build, operate, and troubleshoot test rigs and hardware, from setup through data collection
• Ability to create test documentation - procedures and work instructions - and maintain test traceability from planning through execution

Preferred Skills & Experience:

• CAD experience (e.g., Siemens NX) for reviewing designs and creating test/manufacturing documentation
• Programming experience (e.g., Python) for test automation and data analysis/review tools
• Prior hands-on experience building and managing test campaigns or hardware development from concept through execution
• Familiarity with Spacecraft Maximum Allowable Concentrations (SMACs) and their application to human-spaceflight air-quality assessment, contaminant control, and test-data interpretation
• Experience safely handling chemicals and executing chemical testing, including preparing solutions, operating relevant instrumentation, following SDS requirements, and managing chemical storage and waste disposal

Additional Requirements:

• Willingness to work overtime, or weekends to support critical mission milestones
• Ability to lift up to 25lbs unassisted

Pay Range: California $112,340 - $159,468 USD

We calibrate level and compensation to the selected candidate's experience and demonstrated capability. We welcome applicants across a range of experience levels to apply.

COMPENSATION AND BENEFITS

Base salary will vary depending on job-related knowledge, education, skills, experience, business needs, and market demand. Salary is just one component of our comprehensive compensation package. Full-time employees als