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Jobs · Full-time · Senior

Senior Systems Engineer

Own the system design of LSF's missions — requirements, budgets and interfaces, from Phase A to CDR.

Full-time Senior Systems
Location
Athens HQ · on site
Posted
2026-10-15

The work

LSF designs, builds and flies its own spacecraft and payloads. This role holds each mission together at system level.

A typical month mixes:

  • Requirements. Turning mission needs into system, subsystem and payload specifications that are traced and verifiable.
  • Budgets. Mass, power, link, data, pointing and Δv, kept current as the design moves.
  • Interfaces. ICDs between platform, payload, ground segment and launcher, and the suppliers behind them.
  • Reviews. Preparing and defending ESA-style reviews (SRR, PDR, CDR) and the documents they need.
  • Trade-offs. Working them through with the payload, AIT and operations teams, with numbers rather than opinions.

What we’re looking for

  • 6+ years in space systems engineering, ideally on ESA or institutional missions through Phase A/B.
  • Working knowledge of ECSS system engineering standards and requirements management.
  • Comfort with numbers and scripts: budgets and analyses in Python or similar.
  • Small-satellite experience is a plus.
  • Fluent English. Greek is a plus.

How we work

LSF is a self-managing, open-source non-profit. We make decisions in the open, prefer durable docs over standing meetings, and review each other’s work on GitLab. This role is on site at our Athens HQ (Irous 21, 104 42 Athens), next to the cleanroom and lab where our flight hardware is integrated and tested. We aim for a start between December 2026 and February 2027.

We weigh fit with the foundation and its mission at least as heavily as fit with the position. Read more in our hiring documentation.

Apply

Send your application.

Email us with the four pieces of information from our hiring process: the position you're interested in and how you see yourself fit, a self-assessment of level and cultural fit, and any additional ideas you'd like to bring forward. Attach your CV and anything else that helps us understand you.

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