Avionics Test Engineer, Hardware

Telemetry Today LLC; Los Angeles (CA); Hybrid; USD 110,000 - 170,000; Full time

Benefits offered by this job

Equity in company

Excellent healthcare

Generous PTO

401(k) retirement plan

Parental leave

Job summary

Apex Technology, Inc. is seeking an Avionics Test Engineer, Hardware to join the test team in Playa Vista. You will own test hardware, develop test racks, and work with flight hardware across development, qualification, and production phases.

You will collaborate with electrical, mechanical, RF, software, and systems engineers to establish test requirements, strategies, and to troubleshoot hardware. This role is hands-on and impactful.

Qualifications

• Bachelor’s degree in a technical field (EE/AE/Physics) or related field.
• 5+ years in aerospace hardware or avionics testing.
• Hands-on lab instrumentation and hardware bring-up experience.
• Experience with complex electrical test setups and troubleshooting.
• Understanding of HW integration, verification, and validation workflows.
• Ability to read schematics, wiring diagrams, and interface control documents.
• Strong problem-solving, communication, and independent work能力.
• Must be a U.S. Person under ITAR requirements.

Responsibilities

• Own design, build, integration, and maintenance of bus-level avionics test racks.
• Develop and maintain FlatSats and avionics testbeds with interfaces and emulators.
• Lead hardware integration activities including harnessing and rack assembly.
• Define test architecture with cross-disciplinary teams.
• Troubleshoot flight hardware using oscilloscopes, multimeters, VNAs, and generators.
• Perform hardware bring-up and end-to-end system checkout.
• Create custom test fixtures and electronics as needed.
• Support qualification, regression, and spacecraft-level testing.

Skills

Electrical Engineering

Aerospace Engineering

Hardware bring-up

Schematic reading

Fault diagnosis

Communication skills

US Person per ITAR

Education

Bachelor’s degree in Electrical Engineering

Bachelor’s degree in Aerospace Engineering

Bachelor’s degree in Physics

Tools

Harness design

Test fixturing

Vibration testing

EMI/EMC testing

CAN/RS-422/485/UART

Job description

Spacecraft represent the most pressing unmet need across the entire aerospace industry. As more launch vehicles come online and the cost to orbit decreases, more companies launching payloads to space continue to emerge.

For the first time in history, this influx of payload companies combined with reduced launch costs has resulted in a massive increase in need for commercial spacecraft platforms, known as satellite buses. These buses hold the payloads of our customers and are flown on launch vehicles.

Apex manufactures these satellite buses at scale using a combination of software, vertical integration, and hardware that is designed for manufacturing. Our spacecraft enable the future of society: ranging from earth observation to communications and more.

We’d love for you to join us on our mission of providing humankind access to the galaxy beyond our planet.

About the Role

We’re looking for an Avionics Test Engineer, Hardware to join our growing test team.

In this role, you’ll focus on developing the test hardware, infrastructure, and platforms used to ensure our spacecraft hardware is built and performs to specification. You’ll work closely with electrical, mechanical, RF, software, and systems engineers to establish test requirements, develop test strategies, and troubleshoot flight hardware throughout development, qualification, production, and integration.

This is a highly hands-on role for an engineer who is comfortable owning technical work independently, enjoys working directly with flight hardware and integrated test environments, and wants to have a significant impact on how Apex tests spacecraft at scale.

Responsibilities:

Technical Work

Own the design, build, integration, and maintenance of bus-level and component-level avionics test racks, including harness design, rack component selection, circuit design, and test infrastructure.

Develop and maintain FlatSats and avionics testbeds, including electrical interfaces, emulators, EGSE, harnessing, and supporting infrastructure.

Lead hardware integration activities including harnessing, fixturing, rack integration, and mechanical/electrical interface validation.

Define test architecture and strategies in collaboration with electrical, mechanical, RF, software, and systems engineering teams.

Troubleshoot flight hardware and test setup failures using laboratory instrumentation including oscilloscopes, multimeters, power supplies, DAQ systems, VNAs, and vector signal analyzers/generators.

Perform hardware bring-up, interface validation, signal integrity troubleshooting, and end-to-end system checkout.

Develop test fixtures, breakout boxes, interface electronics, and other custom test hardware as needed.

Support component qualification, acceptance, regression, and spacecraft-level testing.

Investigate test failures and hardware anomalies, determine root cause, and work with responsible engineering teams to drive issues to resolution.

Improve test infrastructure and processes to increase coverage, reliability, repeatability, and throughput.

Required Qualifications:

Bachelor’s degree in Electrical Engineering, Aerospace Engineering, Physics, or a related technical field.

5+ years of professional experience in aerospace hardware, avionics, electronics, or integrated hardware testing.

Hands-on experience with laboratory instrumentation and hardware bring-up.

Experience troubleshooting integrated electrical systems and complex test setups.

Strong understanding of hardware integration, verification, and validation workflows.

Ability to read and interpret electrical schematics, wiring diagrams, interface control documents, and technical requirements.

Strong problem-solving skills and the ability to independently drive technical issues to resolution.

Excellent written and verbal communication skills.

Must be a U.S. Person (U.S. Citizen or Green Card holder) in accordance with ITAR requirements.

Preferred Qualifications:

Experience integrating or testing spacecraft, launch vehicles, avionics, or other flight electronics.

Experience with:

Harness design and fabrication

Test fixturing

Vibration testing

Component acceptance and qualification testing

Experience in fast-paced aerospace production, manufacturing, or integration environments.

Experience conducting sensor functional testing, avionics channelization, or electrical interface validation.

Familiarity with embedded communication interfaces such as CAN, RS-422/485, UART, SPI, I2C, or Ethernet.

Basic Python or scripting experience for test support, data collection, and automation.

#LI-JC1

Why Join Apex?

Apex believes in creating a work environment that you look forward to embracing every day. Our employees love working at Apex, and we want you to love it too. We're a fast-growing startup that has raised more than $500M in funding, and we invest heavily in our people from day one.

What We Offer For Full-time Employees:

Shared upside: Receive equity in Apex, letting you benefit from the work you create

Best-in-class healthcare: 100% company-paid medical, dental, and vision for you and your dependents, plus $100k life insurance at no cost

Comprehensive PTO package to reset and recharge - starting at 15 days vacation, growing to 20+ days annually, plus 10 paid holidays

Competitive 401(k) plan with generous matching - 100% match on first 3%, 50% on next 2%

8 weeks paid parental leave plus childcare reimbursement up to $350/day for work-related travel

Daily catered lunch and unlimited snacks to keep you fueled throughout the day

Vibrant community: Monthly office socials, pickleball tournaments, run club, and gatherings for you and your family

Your dream desk setup and all the tools you need to be your most productive self

World-class Playa Vista office with the benefit of in-person collaboration with amazing coworkers and flexibility to integrate work and life

Real impact opportunity: Work alongside experts from aerospace, new space, and other cutting-edge industries to make a lasting difference

Additional Information:

Compensation ranges are set by role, level, location, and alignment with market data. A candidate's specific level and base pay are determined case by case and may vary with job-related skills, education, experience, technical capabilities, and internal equity. Beyond base salary, full-time hires are also eligible for long-term incentives in the form of stock options, along with medical, dental, vision coverage and a 401(k) retirement plan.

Apex's work is governed by U.S. export control laws, including the International Traffic in Arms Regulations (ITAR) and the Export Administration Regulations (EAR). To be eligible for this role, applicants must either (1) qualify as a U.S. Person, meaning a U.S. citizen or national, a lawful permanent resident (green card holder), a refugee admitted under 8 U.S.C. § 1157, or an individual granted asylum under 8 U.S.C. § 1158, or (2) be able to obtain the required export authorizations from the U.S. Department of State, the U.S. Department of Commerce, or another applicable U.S. government agency. You can learn more about ITAR here .

Equal Opportunity Employer

Apex Technology, Inc. is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. Candidates and employees are always evaluated based on merit, qualifications, and performance. We will never discriminate on the basis of race, color, 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.