Propulsion Development Engineer — Rapid, Data-Driven Tests

Hermeus Corporation; Los Angeles (CA); On-site; USD 91,800 - 187,450; Full time

Benefits offered by this job

Healthcare + pet insurance

Competitive pay & stock options

401(k) retirement plan

Parental leave & holidays

Office lunches & breakrooms

Job summary

Hermeus Corporation in Los Angeles is seeking a Development Engineer on the Propulsion team to advance engine hardware through rapid, test-driven iteration. You will own engine test campaigns, define test plans, and translate results into actionable improvements.

This role demands hands-on hardware experience, Python data analysis, and the ability to move quickly between testing, data interpretation, and hardware problem-solving.

Qualifications

• Hands-on experience with hardware build, integration, or test operations.
• Experience developing or executing engineering test plans and procedures.
• Proficiency in Python for data analysis and automation.
• Strong understanding of sensors, instrumentation, and diagnostic techniques.

Responsibilities

• Own development engine test campaigns from planning through execution and post-test analysis.
• Define, author, and refine engine test plans, procedures, and setpoints aligned with program objectives.
• Support and make decisions during live test operations, including hot-fire and subsystem testing.
• Identify, diagnose, and resolve test-related engine issues across hardware, instrumentation, and procedures.
• Standardize and improve test data review, reduction, and reporting processes.
• Develop Python-based tools for data processing, visualization, and automated analysis.
• Translate test data into clear engineering insights, including performance characterization and root cause analysis.
• Drive post-test reviews and ensure actionable outcomes are captured and executed.
• Participate in hands-on engine build, integration, and test setup activities.
• Author and maintain development engine work instructions, test procedures, and technical documentation.
• Generate, track, and resolve engineering issues through ticketing systems.
• Collaborate cross-functionally with design, manufacturing, avionics, and test teams to resolve system-level challenges.
• Ensure proper sensor selection, instrumentation setup, and data integrity during test campaigns.
• Contribute to continuous improvement of test infrastructure, tooling, and development processes.

Skills

Python for data analysis

Hardware build & test ops

Sensors & instrumentation

Test planning & procedures

Data analysis & automation

Education

Bachelor’s degree in Mechanical or Aerospace Engineering

Job description

Hermeus Corporation in Los Angeles is seeking a Development Engineer on the Propulsion team to advance engine hardware through rapid, test-driven iteration. You will own engine test campaigns, define test plans, and translate results into actionable improvements.

This role demands hands-on hardware experience, Python data analysis, and the ability to move quickly between testing, data interpretation, and hardware problem-solving.