Firefly Aerospace

60 Firefly Aerospace Mechanical Systems Engineer Jobs Hiring Near You

WI · On-site

$100 - $130/hr

Careers At Firefly Aerospace Firefly Aerospace is a space and defense technology company that ... MS or PhD in Aerospace/Mechanical Engineering or equivalent technical field. * Strong working ...

WI · On-site

$85 - $115/hr

Careers At Firefly Aerospace Firefly Aerospace is a space and defense technology company that ... MS or PhD in Aerospace/Mechanical Engineering or equivalent technical field. * Strong working ...

WI · On-site

$80 - $110/hr

... Firefly Aerospace is on a mission to enable our world to launch, land, and operate in space ... budgets and inter-system collaboration activities. * Create CAD, manufacturing drawings ...

ABOUT FIREFLY AEROSPACE Firefly Aerospace is a space and defense technology company on a mission to ... B.S. degree in aerospace, mechanical, or civil engineering and 5+ years of experience in aerospace ...

WI · On-site

$80 - $120/hr

Firefly Aerospace is a space and defense technology company that enables our world to launch, land ... QUALIFICATIONS Required * BS in Aerospace Engineering, Mechanical Engineering or related ...

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Firefly Aerospace Jobs Information

Do workers at Firefly Aerospace get paid breaks?

Yes. Most people get paid breaks.
75% of people say they get paid breaks.
Based on data from 8 people who took the Breakroom Quiz between December 2024 and March 2026.

Does Firefly Aerospace pay people when they’re sick?

Yes. Most people get paid when they’re sick.
78% of people say they would get paid if they were sick but scheduled to work.
Based on data from 9 people who took the Breakroom Quiz between February 2025 and August 2026.

Is the health insurance from Firefly Aerospace affordable enough for their workers?

Most people say the health insurance costs are okay.
100% of people say the health insurance costs are okay
Based on data from 6 people who took the Breakroom Quiz between March 2025 and August 2026.

Do workers at Firefly Aerospace worry about hours?

Most people don’t worry about getting enough hours.
86% of people report they don’t worry about getting enough hours.
Based on data from 7 people who took the Breakroom Quiz between December 2024 and August 2026.

Do Firefly Aerospace workers get to choose the shifts they work?

Some people don’t get to choose which shifts they work.
60% report that they don’t have enough control over which shifts they work.
Based on data from 5 people who took the Breakroom Quiz between December 2024 and August 2026.

How easy is it to get time off at Firefly Aerospace?

Most people find it easy to get time off.
80% of people report it’s easy to get time off.
Based on data from 10 people who took the Breakroom Quiz between January 2025 and August 2026.

Do Firefly Aerospace managers change schedules at the last minute?

Most managers don’t change people’s schedules at the last minute.
83% of people say their manager doesn’t change their shift schedule at the last minute.
Based on data from 6 people who took the Breakroom Quiz between December 2024 and August 2026.

Do jobs at Firefly Aerospace spill into time workers aren’t paid for?

Rarely. The job doesn't usually spill into unpaid time.
33% of people report that their job takes up time that they don’t get paid for.
Based on data from 6 people who took the Breakroom Quiz between December 2024 and August 2026.

How easy is it to take sick days at Firefly Aerospace?

Most people find it easy to take sick days.
91% of people report that it’s easy to take time off if they are sick.
Based on data from 11 people who took the Breakroom Quiz between December 2024 and August 2026.

Do people at Firefly Aerospace feel treated with respect by their managers?

Most people feel treated with respect by their managers.
80% of people say they’re treated with respect by their managers.
Based on data from 10 people who took the Breakroom Quiz between December 2024 and March 2026.

Do people at Firefly Aerospace get to take their breaks without interruption?

Most people get breaks without interruption.
78% of people report that they get to take their breaks without interruption.
Based on data from 9 people who took the Breakroom Quiz between December 2024 and August 2026.

Is it stressful to work at Firefly Aerospace?

Most people feel stressed here.
100% of people say they often feel stressed at work.
Based on data from 8 people who took the Breakroom Quiz between February 2025 and August 2026.

Do people at Firefly Aerospace enjoy their jobs?

Most people enjoy their job.
90% of people report they enjoy their job.
Based on data from 10 people who took the Breakroom Quiz between December 2024 and March 2026.

Do people at Firefly Aerospace recommend working with their team?

Most people recommend working with their team.
82% of people report that they would recommend working with their immediate team to a friend.
Based on data from 11 people who took the Breakroom Quiz between December 2024 and August 2026.

Do people get enough training when they start at Firefly Aerospace?

Some people didn’t get enough training when they started.
50% of people report they didn’t get enough training when they started working here.
Based on data from 10 people who took the Breakroom Quiz between December 2024 and August 2026.

Do people get support to advance at Firefly Aerospace?

Most people are given support to advance their career here.
In the last year, 70% of people report being given support to advance their career here.
Based on data from 10 people who took the Breakroom Quiz between December 2024 and August 2026.

Do people think Firefly Aerospace’s headquarters understands what’s happening where they work?

Some people think headquarters doesn’t understand what’s happening where they work.
64% of people think that this employer’s headquarters or owners don’t have a good understanding of what’s really happening where they work.
Based on data from 11 people who took the Breakroom Quiz between December 2024 and August 2026.

Do workers feel well informed about how Firefly Aerospace is doing?

Only some people feel well informed about how the company is doing.
36% of people feel that they aren’t kept well informed about how the company is doing as a whole.
Based on data from 11 people who took the Breakroom Quiz between December 2024 and August 2026.

What other companies are hiring for Mechanical Systems Engineer jobs?

What are the most popular categories at Firefly Aerospace?

Infographic showing various Mechanical Systems Engineer job openings at Firefly Aerospace in the United States as of August 2026, with employment types broken down into 94% Full Time, and 6% Nights. Highlights an 99% Physical, and 1% Remote job distribution.

Spacecraft Systems Engineer III

Firefly Aerospace

WI • On-site

$100 - $130/hr

Other

Medical, Dental, Vision, PTO

Posted 4 days ago


Key responsibilities

  • Create and maintain system-level designs, schematics, interface control documents, and performance budgets.

  • Own requirements development, subsystem interfaces, and vehicle level test plans, and review all test plans for the vehicle.

  • Lead system-level trades, design reviews, and data reviews, and be accountable for the delivery of key project milestones and issue resolution.


Firefly Aerospace rating

6.9

Company rating: 6.9 out of 10

Based on 11 frontline employees who took The Breakroom Quiz

64th of 72 rated aerospace companies


Job description

Career Opportunities with Firefly Aerospace

Come be a part of the 21st Century Space Race!

Careers At Firefly Aerospace

Firefly Aerospace is a space and defense technology company that enables our world to launch, land, and operate in space – anywhere, anytime. As the partner of choice for critical space missions, Firefly is the only commercial company to launch a satellite to orbit with 24-hour notice and the only company to achieve a successful Moon landing. Our launch vehicles, lunar landers, and orbital vehicles provide government and commercial customers with full mission services from low Earth orbit to the Moon and beyond. Headquartered in north Austin, Texas, Firefly is looking for passionate, hardworking innovators to join our team and help fuel our successful trajectory into space.

SUMMARY

We welcome you to join Firefly as a Spacecraft Systems Engineer, to leverage your creative and technical expertise for the development of Blue Ghost and Elytra spacecraft over the product lifecycle from concept through fabrication, test & flight. You will work with design engineering, manufacturing, integration, test and launch teams to ensure the production of a thoroughly tested, operationally efficient and reliable vehicle that meets system level requirements. The Systems Engineering team is accountable for requirements, interfaces, and test planning – it will be your responsibility to validate the system architecture, manage technical budgets and design configuration between departments, develop test plans, ensure verification of requirements, and support mission operations. You will be expected to be able to speak knowledgeably about the current system configuration and provide status updates on performance, changes, schedule, and risks. It will be your job to translate program plan and engineering team’s vision into system level success. A successful candidate will be a self-starter, elevate their teammates and be passionate about the space industry.

RESPONSIBILITIES

To deliver a robust, reliable, and economical product successfully completing all mission requirements by...

  • Creating and maintaining system-level designs, schematics, interface control documents and performance budgets including fluid, electrical, and software architectures.
    • e.g. ICDs, ConOps, States & Modes, Sequence Diagrams, FBD, Boundary Diagrams, Grounding/Bonding Diagrams, Mass/Power/Link/dV/etc Budgets
  • Owning requirements development/flowdown, subsystem interfaces, and vehicle level test plans. Reviewing all test plans for your vehicle.
  • Leading system-level trades, design reviews, and data reviews for your vehicle.
    • Accountable for delivery of SRR, and PDR, responsible for providing critical inputs to CDR, MRR, TRR, and LRR.
  • Being accountable for the resolution of any issue, failure, or NCR that impacts closure of your test plans. Includes root cause analysis and issuing of corrective actions.
  • Facilitating the change control board, risk review board, deliverable tracking and effort estimates for your vehicle.
  • Maintaining a strong rapport with the manufacturing and integration technicians, understanding their challenges and proposing upstream opportunities for improvement.
  • Traveling to support offsite testing.
  • Serving as surge capacity for the operations team during demanding missions and supporting 12 hour shifts during lunar mission operations.
  • Maintaining calm under pressure, and fostering a positive, professional, and respectful working environment.
QUALIFICATIONS
  • BS in Aerospace Engineering or related engineering discipline required
  • 6+ years of focused hands‑on experience in an interdisciplinary project management or execution role on spacecraft, equivalent work will be considered.
  • Firm comprehension and demonstrated application of first principles in engineering disciplines (orbital mechanics, controls, mechanical, structural dynamics, electrical, mechatronics, materials, thermodynamics, fluid dynamics, and propulsion).
  • Experience leading interdisciplinary project teams of including hardware and software engineers.
  • Strong working knowledge of ASME, MIL, ASTM, and/or NASA Standards, as well as Systems Engineering best practices – able to adapt processes to meet the needs of the team.
  • Exceptional communication (written and verbal), public speaking and presentation skills.
  • Experience through the full lifecycle of a spacecraft mission from SRR to mission operations.
  • Strong working knowledge of GNC analysis and cislunar mission planning.
  • Strong working knowledge of the lunar surface environment and robotics.
  • MS or PhD in Aerospace/Mechanical Engineering or equivalent technical field.
  • Strong working knowledge of real‑time visual navigation systems for autonomous control.
  • Experience designing spacecraft architectures or critical subsystems for reliability and radiation resiliency.
  • Strong working knowledge of fabrication and assembly methodologies, production management tools, and quality control processes.
  • Experience tailoring SMC/AFSPCM/91-710 equivalent range documents; understanding, documenting and resolving the technical implications and risks associated with the tailoring.
  • Experienced on Agile Project Management using Atlassian tools (JIRA, confluence, bitbucket)
  • PMP or equivalent project management experience

Firefly offers outstanding benefits for our employees, including generous health, dental and vision plans with low plan deductibles, parental leave, educational reimbursement, short‑term disability, and flexible PTO options.

To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State.

Firefly Aerospace, Inc. is an Equal Opportunity Employer; employment with Firefly is governed based on merit, competence and qualifications and will not be influenced in any manner by 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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