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Salary
≈ $20k – $58k per year (Estimated)
Location
In office (Sofia)

First seen by Alion on Sep 28, 2026.

Overview
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EnduroSat is a Bulgarian space technology company founded in 2015 and based in Sofia. It builds modular nanosatellites and shared satellite services for commercial and scientific missions. The company has delivered spacecraft and components to customers worldwide.

About us

We are EnduroSat! A fast-growing space scale-up at the forefront of satellite innovation, specializing in advanced software-flexible satellites for commercial, governmental, and scientific endeavors.

  • This is more than a job, it’s a mission – We are making space universally accessible and redefining what’s possible.
  • We get things done – We take ownership of what we do and we work hard to make a difference.
  • We are fearless – Transparency is our only way forward. We dare to address and resolve issues head-on.
  • We learn from our mistakes – We deliver, take informed risks, and evolve to achieve our goals. We compare with the best version of ourselves

What is the role?

As a Mechanical AIT Engineer, you turn engineering intent into flight-ready hardware with full traceability, reliability, and speed. You will be at the heart of our production floor, transforming engineering drawings into fully functional satellites

Some of your daily tasks will include:

  • Build flight hardware: assemble and integrate structures, mechanisms, propulsion modules, payloads, and harnesses on our platforms per drawings, BOMs, and work instructions.
  • Own integration: perform precision torquing/locking, bonding and staking, adhesive/RTV application, connector mating, harness dressing, and cleanliness controls.
  • Guard quality: execute incoming, in-process, and final inspections; enforce ESD/FOD and cleanroom protocols; ensure configuration control and full part traceability.
  • Document precisely: create and maintain travelers, detailed work instructions, torque logs, build records, and nonconformance reports (NCR/MRB).
  • Test for flight: prepare MGSE/fixtures and support environmental test campaigns (vibration, shock, TVAC); run fit checks and post-test inspections; contribute to TRR/PRR/ATRs.
  • Problem-solve fast: diagnose integration issues, drive root-cause analysis, and feed DFM/DFA improvements back to design.
  • Improve continuously: implement 5S, lean practices, and data-driven improvements to reduce cycle time and increase first-pass yield.
  • Enable the team: collaborate daily with design, electronics, RF, production, and test to deliver on schedule and to spec.

What do we look for?

  • Degree in Mechanical, Aerospace, or related engineering.
  • 5+ years of hands-on assembly/integration of high-reliability hardware (space, aerospace, defense, medical, or similar).
  • Strong command of mechanical systems and good understanding of electrical interfaces; fluent in reading CAD, GD&T, and schematics.
  • Proven proficiency with precision tools (torque tools, calipers, micrometers) and workmanship to ECSS/IPC/NASA standards.
  • Experience in cleanroom environments with strict ESD, FOD, and contamination control.
  • Excellent troubleshooting, root-cause analysis, and clear technical documentation in English.

How to Stand Out:

  • Direct AIT experience on nano/microsatellites or spacecraft subsystems.
  • Familiarity with ECSS/NASA workmanship standards and space-quality assurance.
  • Hands-on with environmental testing (TVAC, vibration, shock) and test procedure authoring.
  • Experience with ERP/PLM/MES and digital travelers; JIRA/Confluence is a plus.
  • Lean/Six Sigma exposure; demonstrable continuous improvement results.
  • Experience with propulsion integration, precision mechanisms, opto-mechanics, or harness assembly (IPC/WHMA-A-620).
  • Data skills for test analysis (e.g., Python/Matlab) are welcome.

Why EnduroSat?

  • Fast-paced and delivery-focused culture – We work with well-defined quarterly based objectives, that allow us to fast-track the progression of our work and improve as we go
  • Tough engineering challenges & hard-core R&D – You will be able to work on unique space technology and build next-gen innovations, while mentored by world-recognized space experts
  • Constant learning and progression – Own your personal growth by navigating through our career progression framework and educational programs
  • Chance to join our space educational program – Meet international space experts and improve your knowledge and skillset with our hands-on educational program

At EnduroSat, we embrace diversity and strive to create an inclusive environment where everyone is treated with fairness and respect. We are committed to equal employment opportunities without discrimination against any employee or job applicant on the basis of race, color, religion, sex, national origin, age, disability, sexual orientation, or gender identity. Additionally, this position is suitable for people with disabilities in accordance with the People with Disabilities National Regulation Act, ensuring accessibility and accommodation in the workplace.

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