Senior Mechanical Design Engineer Propulsion Job Long Beach area,California USA,Engineering

About Odys

At Odys, we’re mobilizing power, with Hybrid Power Systems developed for aerospace and in-demand everywhere. It’s the kind of mission diversity that demands a fresh way of thinking.

We began with an early bet on hybrid, when the mobility industry was focused on batteries. We designed, tested, and validated our first 1 MW high-speed generator in 12 months. And then we pushed further, developing systems with greater power density in less time. Today, our Hybrid Power Systems offer outputs ranging from 20 kW to 4 MW
, with applications in the air or on the ground.

One of those applications is Laila
, an unmanned drone designed for critical logistics and defense missions. With its 100 kW-class onboard Hybrid Power System, Laila can support medical cold-chain transport or serve as an aerial platform for counter-UAS measures.

The market interest has been overwhelming:
Over 30 inbound requests from leading US and global manufacturers, and 14+ DoD
contracts
.

Our team comes from deep tech and aerospace, with backgrounds spanning drone and aircraft development, high-volume production, and electrified mobility.

We operate with urgency and ownership at every level. We validated high-speed generator technology faster than our peers, not because we skipped steps, but because we've been doing this long enough to know which ones matter most.

Creating the future of power, in the air and on the ground, is a challenge we’ve been training our entire lives for. If that sounds like you, this is the opportunity you’ve been waiting for.

About The Role

Odys Aviation is seeking a senior level Mechanical Design Engineer to join our Propulsion Team. In this role, you will design, analyze, and integrate mechanical and thermal systems that support high-power hybrid-electric propulsion, including motors, generators, inverters, turbines and their supporting structures and cooling systems.

You’ll work closely with electrical, manufacturing, test, and flight teams. This is a hands‑on role with ownership of critical hardware, where you will play a key role as we mature our propulsion systems.

Don't meet all desired requirements? Studies have shown that some people are less likely to apply to jobs unless they meet every single desired qualification. At Odys, we are dedicated to building an authentic workplace, so if you're excited about this role but your past experience doesn't align perfectly with every desired qualification in the job description, we encourage you to apply anyway.

What You’ll Do

Lead design and analysis of rotating machinery subsystems (turbines, motors, generators), addressing vibration, dynamic balancing, and bearing/seal challenges

Drive resolution of real hardware issues discovered during prototype and early production builds

Mentor and provide technical guidance to mid-level and junior engineers

Contribute to planning and technical strategy for the propulsion team, including design reviews and technical standards

Create and maintain 3D CAD models and 2D drawings, including GD&T and tolerance stackups

Perform DFM/DFA trade studies, balancing weight, cost, thermal performance, reliability, and manufacturability

Work with suppliers and internal teams to assess manufacturing feasibility, refine designs, and rapidly resolve build issues

Support hands‑on prototype assembly, integration, and test, including debugging and root cause analysis

Conduct engineering analysis using a mix of hand calculations and FEA to inform design decisions

Implement and refine thermal management strategies (air and/or liquid cooling, heat sinks, TIMs, enclosures, insulation)

Translate test data and build feedback into actionable design improvements

Document designs, analyses, and design changes clearly to support team alignment and…