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Integration Engineer Fluid & Propulsion Systems

Hermeus is a venture-backed defense aviation company reclaiming the lost art of rapid iterative prototyping to build the fastest aircraft in the world today. By prioritizing relentless hardware iteration, we deliver high-speed systems at the pace of the modern battlefield. We work with the Department of War to provide the high-speed capabilities our nation and its allies need to maintain a durable, asymmetric advantage.

About The Role:

We are seeking an Integration Engineer to own the design release, build, test, and delivery of key vehicle fluid, propulsion, and mechanism assemblies — including control surface actuators, spike inlet systems, engine integration, and other mission-critical hardware.

You will serve as the technical bridge between design, manufacturing, and test, ensuring our hardware is built with precision, efficiency, and reliability. This role requires a hands-on engineer with a strong background in mechanical systems, propulsion, and fluids — capable of driving complex assemblies from concept through validation in a fast-paced, first-principles environment.

Responsibilities

Provide design feedback to improve manufacturability, assembly, testability, and integration for complex fluid and propulsion systems.
Establish and maintain build roadmaps for assigned assemblies to align key stakeholders, drive hardware and tooling deliveries, and minimize build serialization.
Develop and release build CONOPS, work instructions, standard processes, and procedures to enable high-quality, high-velocity execution.
Lead and support first-article builds in an early-stage, rapid-development environment, identifying and resolving issues in real time.
Own design, process, and capital equipment trades to unlock key production capabilities and support scalable manufacturing infrastructure.
Drive make-vs-buy decisions and collaborate closely with design engineering, manufacturing, and supply chain teams.
Provide hands-on support during build, integration, and test operations, ensuring technical issues are addressed quickly and effectively.
Support test readiness activities, including component and system pressurization, leak checks, actuator functional tests, and propulsion integration.
Drive continuous improvement across the production floor — including tooling, ERP/MES workflows, build documentation, and internal specifications.
Champion a safety-first mindset, especially during hazardous or high-pressure operations.

Requirements:

Bachelor’s degree in Mechanical Engineering, Aerospace Engineering, or related technical field.
3+ years of hands-on experience in hardware integration, assembly, or manufacturing of fluid, propulsion, or mechanical systems.
Familiarity with aerospace assembly best practices, including precision fitting, torque control, and contamination prevention.
Exposure to tolerance stack-up analysis, system P&ID development, actuator testing, leak checks, and valve assembly or test.
Strong understanding of GD&T, CAD modeling, and first-principles design and analysis.
Proven ability to communicate effectively across design, manufacturing, supply chain, and test organizations.
Demonstrated initiative and ownership, with the ability to define and implement new processes from scratch.

Preferred Skills and Experience

Experience supporting new product introduction or flight hardware integration in an aerospace or defense environment.
Direct experience authoring and executing build work instructions and leading complex first-time build efforts.
Familiarity with pressurized systems, hazardous operations, or test campaigns involving cryogenic, pneumatic, or propellant systems.
Experience with welded tube, valve, or manifold assemblies (TIG, MIG, or laser welding).
Exposure to R&D or low-rate production environments, including vendor engagement, tooling development, and hands-on troubleshooting.
Strong systems-level understanding of propulsion and fluid control architectures.

Additional Requirements

Must be willing to be hands-on in a manufacturing and test environment daily.
Ability to lift up to 25 lbs and work safely around high-pressure systems and industrial equipment.
Extended or flexible hours may be required to support critical build and test milestones.

The salary range listed for this role is intended as a general guideline. Final compensation will be determined based on a variety of factors, including role scope and responsibilities, relevant experience, education and training, key skills, market data, and business needs.

At Hermeus, compensation is only one part of our total rewards package. We offer competitive pay, equity, and a range of benefits designed to support our team.

Benefits:

Health & Wellness: 100% employer-paid healthcare and pet insurance
Financial: Competitive pay, stock options, 401(k) retirement plan, and potential year-end bonuses
Time Off: Paid parental leave, 12 federal holidays, unlimited PTO for exempt employees, and generous accrued PTO for non-exempt employees
Office Perks: Weekly paid office lunches and fully stocked breakrooms

U.S. EXPORT CONTROL COMPLIANCE STATUS

The person hired will have access to information and items subject to U.S. export controls, and therefore, must either be a “U.S. person” as defined by22 C.F.R. § 120.62or otherwise eligible for deemed export licensing. US persons include U.S. citizens, U.S. nationals, lawful permanent residents (green card holders), and asylees and refugees with such status granted, not pending.

EQUAL OPPORTUNITY

Hermeus is an Equal Opportunity Employer. Employment decisions at Hermeus are based solely on merit, competence, and qualifications, without regard to race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status.

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Integration Engineer – Fluid & Propulsion Systems in Los Angeles, California at Hermeus

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