Skyroot Aerospace is a National award-winning growth-stage start-up, founded by former ISRO scientists.
Our mission is to open space for all by providing affordable, reliable, and responsive space launch solutions.
We are a close-knit team of Space professionals building leading space launch vehicles and solutions from India for the world.
Job description
Valves Assembly & Testing Engineer is responsible for precision assembly, calibration, and qualification testing of cryogenic and other liquid-propulsion valves used in rocket engines and ground-support systems. This role requires deep understanding of cryogenic fluids (LOX, LHe, LCH4), high-pressure systems, aerospace materials, and stringent quality and safety standards. The engineer ensures that each valve meets mission-critical requirements for reliability, leak-tightness, and performance under extreme conditions.
Key Responsibilities
1. Valve Assembly
Assemble cryogenic isolation valves, pneumatic injection valves, flow control valves, solenoid valves, check valves, etc. according to the mission requirements.
Work with precision components including seals, soft goods, PTFE seats, cryo-compatible lubricants, and exotic alloys (Inconel, Monel, titanium, stainless steel).
Perform lapping, alignment, torquing, and precision fitment to ensure zero-leak performance at cryogenic temperatures.
Assemble actuators (pneumatic, electric, or hydraulic) and integrate sensors/feedback mechanisms.
Collaborate with design engineers to review valve design requirements and recommend improvements.
Provide feedback on recurring issues, material performance at cryogenic temperatures, and assembly optimizations.
Assist in developing new test setups, fixtures, and validation procedures.
2. Valve Testing & Qualification
Conduct cryogenic tests using LOX, LN2, LNG etc. under controlled safe-handling procedures.
Perform high-pressure and proof-pressure tests per aerospace propulsion standards.
Execute functional tests including flow test, response time, cracking pressure, and actuation cycle tests.
Conduct helium leak detection tests (mass spectrometer leak detection) for ultra-tight tolerances.
Evaluate performance under thermal cycling, vibration loads, and simulated launch conditions.
Follow strict safety protocols for handling cryogenic fluids, high-pressure systems, and rocket engine propellants.
Ensure compliance with aerospace safety guidelines and facility-specific hazardous operations procedures.
3. Quality Assurance & Documentation
Inspect and verify incoming components for aerospace standards (material certifications, dimensional tolerances, NDT reports).
Document all assembly steps, test results, and calibration data in accordance with aerospace quality systems.
Prepare detailed test reports for engineering, quality, and mission assurance review.
Support Failure Mode Analysis (FMEA), Root Cause Investigations (RCA), and corrective action plans.
Experience & Skills
2 to 5 years in aerospace, cryogenic systems, propulsion, or high-precision valve assembly/testing.
Experience with cryogenic fluids (LOX, LH2, LN2, LCH4) is highly desirable.
Strong knowledge of cryogenic materials, thermal contraction effects, and fluid dynamics.
Familiarity with aerospace standards (AS9100, MIL-specs, NASA, or ISRO propulsion guidelines).
Skilled in using helium leak detectors, cryogenic test benches, pressure regulators, and precision gauges.
Ability to read aerospace drawings, schematics, P&IDs, and tolerance stack-ups.
* Hands-on experience with torque tools, clean-room assembly, and contamination control.
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