Full-Time

Senior Combustion Devices Engineer

Astro Mechanica

Astro Mechanica

11-50 employees

Designs and sells high-efficiency jet engines

No salary listed

San Francisco, CA, USA

In Person

Must be on-site five days a week in San Francisco.

Category
Aerospace Engineering (1)
Required Skills
GD&T
FEM/FEA
Requirements
  • 5+ years hands-on experience designing combustion devices for use in propulsion or similarly complex environments
  • Expertise in design and analysis of airbreathing combustors, igniters, and fuel systems
  • Proficient in CAD solid body and surface modeling (Siemens NX), engineering drawings, and GD&T
  • Strong understanding of thermodynamics, heat transfer, and fluid behavior
  • Hands-on prototype assembly and test stand experience
  • Experience with data acquisition and instrumentation selection for analyzing stability and performance in elevated temperate environments
  • Understanding and familiarity with high-temperature materials, coatings, and joining methods relevant to combustion
  • Experience with root-cause analysis of hardware failures
  • Takes initiative for continuous improvement (not just completing assigned tasks)
  • Flexibility to work in fast-paced environment
  • Attentive to detail and maintain a high level of quality in all work
Responsibilities
  • Lead conceptual trades for novel combustors while considering system-level impacts
  • Complete detailed designs with supporting structural, thermal, and fluid analyses
  • Implement advanced materials and manufacturing techniques to achieve performance and reliability at scale
  • Assemble prototypes firsthand, design complementary tooling, and establish work instructions
  • Conduct hardware test and analyze data to verify requirements and performance metrics
  • Understand empirical trends and iterate quickly through component-level and integrated testing
  • Diagnose hardware problems efficiently and determine corrective actions

Astro Mechanica designs, develops, and sells highly efficient jet engines for commercial airlines, private jets, and military clients. Its engines convert fuel into thrust through advanced propulsion with emphasis on engine-airframe integration and long-term maintenance contracts to sustain high efficiency. It differentiates itself with a flat, collaborative engineering culture and a focus on delivering the world's most efficient jet engine alongside ongoing service agreements, rather than relying mainly on upfront sales. Its goal is to make air travel faster, farther, and more efficient, redefining how time and space are experienced in aviation.

Company Size

11-50

Company Stage

Seed

Total Funding

$130K

Headquarters

San Francisco, California

Founded

2021

Simplify Jobs

Simplify's Take

What believers are saying

  • United Airlines Ventures invests in supersonic engine design.
  • Alumni Ventures backs dual aviation-space propulsion tech.
  • Plans 2027 flight test after 2026 high-altitude testing.

What critics are saying

  • Helix supply loss halts development in 12-24 months.
  • Flight demonstrator delays beyond 2027 erode confidence.
  • LNG infrastructure absence blocks commercial adoption.

What makes Astro Mechanica unique

  • Duality engine adapts as turbofan, turbojet, and ramjet across speeds.
  • Uses Helix SPX242-94 motors for 400kW peak power in prototypes.
  • Designed for LNG fuel at one-tenth jet fuel cost.

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Benefits

Comprehensive medical, dental, and vision insurance, including Flexible Spending Accounts (FSA)

401(k) program and transparent stock option plan

Self-managed and flexible time-off policy, including PTO, paid holidays, and sick time

Flexible work environment

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

2%

2 year growth

2%
The Engineer
Dec 1st, 2025
UK's Helix powers supersonic startup Astro Mechanica

UK's Helix powers supersonic startup Astro Mechanica. UK motor manufacturer Helix is partnering with California startup Astro Mechanica to provide electric motors for the latter's supersonic engine. Astro Mechanica's Duality engine is a hybrid propulsion unit designed to improve the fuel efficiency of supersonic flight. A turbogenerator uses a gas turbine to generate electricity via two motors, which power the four Helix SPX242-94 motors in the propulsors that control the fan and compressor. According to Helix, this layout allows the engine to operate like a turbofan at subsonic speeds and a turbojet at lower supersonic speeds, transitioning to a ramjet at very high supersonic speeds. Combined with Astro Mechanica's advanced airframe design, the Duality engine is claimed to be capable of producing speeds in excess of Mach 3, with the platform's fuel efficiency set to enable transpacific supersonic travel for the first time. "We are incredibly proud that our electric motors are powering Duality given its potential to reshape aviation and aerospace," said Derek Jordanou-Bailey, Aerospace chief engineer at Helix. "For decades, Helix has worked at the very cutting-edge of electric powertrain technology and are now a critical enabler in electrification journey of many high-performance sectors. Astro Mechanica's engine shows that our unrivalled power density stands to completely transform the engineering and economics of whole industries." The four Helix SPX242-94 radial flux motors that currently power Astro Mechanica's fourth-generation prototype are capable of 400kW of peak power with a maximum torque of 470Nm. On a continuous basis, they can output 300kW of power and 286Nm of torque. Helix is also designing custom motors for the fifth-generation propulsion system. The new motors are expected to output 900kW of continuous power in either generator or propulsion modes. Peak power is 950kW operating at up to 20,000rpm with a maximum torque capability of 575Nm. The new motor isolation system is also designed for extreme-altitude operation.

FinSMEs
Sep 1st, 2025
Astromech: Ben Lamm, George Church's $30M AI Venture

Ben Lamm and Harvard's George Church have launched Astromech, an AI company, raising $30 million, as per SEC filings. This venture builds on their collaboration at Colossal Biosciences. Lamm's history of securing capital is evident, with Colossal raising over $225 million. Astromech's funding positions it among well-capitalized early AI entrants, reflecting Lamm's knack for attracting investment in ambitious science and technology ventures.

BNP Media
Aug 21st, 2025
United Airlines Ventures Backs Astro Mechanica's Supersonic Engine Design

CHICAGO - United Airlines Ventures (UAV), the venture capital arm of United Airlines, has invested in Astro Mechanica, an aerospace startup developing advanced propulsion and airframe technologies aimed at making supersonic flight economically viable.

The Associated Press
Aug 20th, 2025
United Airlines Ventures Invests in Astro Mechanica

United Airlines Ventures (UAV) has invested in aerospace startup Astro Mechanica, which is developing an adaptive propulsion system for supersonic flight. Astro Mechanica's Duality™ engine uses a hybrid electric architecture to optimize performance across various speeds, aiming for efficient transpacific supersonic travel. Initially targeting military applications, the technology will later be adapted for commercial use. UAV, established in 2021, focuses on innovative aviation technologies.

Alumni Ventures
Oct 15th, 2024
Astro Mechanica Revolutionizes Air and Space Travel

Alumni Ventures has invested in Astro Mechanica, which is testing engines for future trans-Pacific flight demonstrations. The company's propulsion system also offers a cost-effective solution for space travel by potentially replacing the first stage of traditional rockets. This dual-purpose technology positions Astro Mechanica as a significant player in both aviation and space industries. AV Senior Associate Drew Wandzilak highlighted the system's potential to reduce costs and increase speed as transformative.