On-Board Software Verification & Validation Engineer

JUST ONE, on behalf of its client, a leading European space and technology company driving cutting-edge satellite systems and aerospace engineering solutions, is looking for a motivated and technically driven OBSW Verification & Validation Engineer to join their growing team in Greece.
The Verification & Validation Engineer contributes to the validation of Satellite Core SoftWare (SCSW). The role focuses on requirements‑based testing, test automation, and verification. This position is ideal for an early‑to‑mid‑career engineer with a strong interest in onboard software, validation processes, and space systems, who is comfortable working in a structured, tool‑driven environment aligned with ESA standards.
Responsibilities

- Create validation test case specifications (VTS) for requirements based on technical specification TS (based on SRS and ICD, see inputs section of this document).

- Creation of traceability between requirements and test cases.

- Development and execution of test scripts (XML based) for test cases using the internal tool TSVF (TS-Level Validation Framework)

- Creation of Software Validation Test Reports (SVR) with the Atlassian Jira/Xray toolchain

- Processing (creation, verification, and closure) of software problem reports (SPR)

- Processing (creation, verification, and closure) of software change requests (SCR)

- Fixing of test script issues within own developed test cases or already existing test cases.
Requirements

- MSc in Aerospace Engineering, Computer Science, Embedded Systems, or a related field

- Strong interest in onboard software and space missions

- Basic understanding of:

- Software development lifecycle

- Verification & validation processes

- Systems engineering concepts (requirements, interfaces, traceability)

- Analytical mindset, attention to detail, and ability to work with complex technical systems

- Familiarity with at least some of the following:

- Test automation or scripting (e.g. XML, Python)

- Version control tools (SVN, Git)

- Jira or similar issue tracking tools

- English (proficient level, required); German is a plus

- Motivation to learn tools, standards, and processes used in ESA and large European space programs

- Military service obligations fulfilled (for male Greek citizens)
Benefits

- Base Salary €35K/yr - €45K/yr depending on level of experience, can be negotiated for senior profiles

- Direct contribution to validation of flight software for a satellite mission

- Hands-on experience with professional V&V toolchains (TSVF, Jira/Xray, CI pipelines) and mentoring by experienced engineers

- Collaborative, high‑trust culture that values initiative, asking questions early, and taking calculated risks. Exposure to an international leading space industry environment through daily interactions with

- Private health insurance, flexible hours, remote work on a case by case basis, training/certification budget, business travel opportunities, and benefit vouchers.

- Opportunities to grow in software V&V, systems engineering, and space project lifecycle activities

- Locations: Athens or Heraklion