Sr Manufacturing Engineer, Mechanical Fluids Assemblies

Relativity Space•Long Beach, CA

3d•$122,000 - $182,000

About The Position

The Sr Manufacturing Engineer will own hardware from design release through build, test, and delivery for vehicle sub-systems, taking responsibility for execution readiness and product quality across high-volume subassemblies. The role focuses on mechanical fluids assemblies and process development that will help scale the workcenter. The engineer will develop and release detailed build flows, work instructions, and test procedures; support first-article builds; and provide hands-on floor support during build and test. They will resolve issues in real time, incorporate technician feedback, and improve hardware flow and process discipline. The role also coordinates with design, supply chain, production, and test teams on part readiness, tooling, schedules, and handoffs, and contributes to long-term manufacturing systems and infrastructure, including tooling strategies, ERP/MES workflows, and production documentation standards.

Requirements

Degree in engineering or a related technical field.
At least 5 years of hands-on experience building and testing hardware in a manufacturing or integration environment.
Ability to investigate hardware issues, resolve non-conformances, and drive root cause analysis with effective corrective actions.
Familiarity with general assembly and test procedures, including tolerance stack-up analysis, structural proof testing, and pressurized leak checks.
Ability to work across design, manufacturing, supply chain, and test teams to support hardware quality and schedule alignment.
Ability to define and roll out new processes from scratch in collaboration with technicians, engineers, and external vendors.
Proficiency in GD&T, CAD, and basic design or test analysis.
Experience in at least two of the following: LOX cleanliness, leak checking, sensor checkouts, tube bending, tool design, crane operations, or subassembly builds.

Nice To Haves

Experience supporting new aerospace product introduction or transitioning hardware from prototype to production, especially in a high-rate or scaling environment.
Experience authoring and executing test procedures, including acting as a test conductor for integrated system verification.
Familiarity with hazardous operations, fluid system safety, or test execution involving pressurized or high-risk environments.
Experience in a fast-paced, lean environment, including direct vendor engagement, tool development, or leading a small team through an ambiguous build or test effort.

Responsibilities

Own vehicle sub-system hardware from design release through build, test, and delivery, ensuring execution readiness and product quality across high-volume subassemblies.
Develop and release detailed build flows, work instructions, and test procedures for repeatable, high-quality execution.
Support first-article builds, emphasizing manufacturability, repeatability, quality, and scalable processes.
Provide hands-on floor support during build and test, resolve issues in real time, incorporate technician feedback, and drive continuous improvement.
Coordinate with design, supply chain, production, and test teams to ensure part readiness, tooling availability, schedule alignment, and smooth handoffs.
Contribute to manufacturing systems and infrastructure, including tooling strategies, ERP/MES workflows, and production documentation standards.