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 Requirements Engineer to join their growing team in Greece.

The Requirements Engineer will maintain and exploit the requirements database, supporting traceability and verification activities, and contributing to the continuous improvement of requirements engineering processes. This position is ideal for an early-career engineer with strong attention to detail, organizational skills, and a strong interest in space missions. 

Responsibilities:

• Maintain and update the requirements database (IBM DOORS) 
• Assist in requirements tracing, verification status tracking, and consistency checks across different system levels 
• Deliver and review technical specifications exports from the requirements database
• Contribute to the improvement and documentation of requirements engineering processes
• Contribute to the projects’ documentation (specification tree, traceability matrices, progress reports) 

Requirements

• MSc in Aerospace Engineering, Systems Engineering, Physics, Astrophysics, or a related field 
• Strong interest in space science missions, particularly astrophysics, exoplanet science, or gravitational wave missions
• Basic understanding of systems engineering concepts (requirements, interfaces, verification/validation)
• Analytical mindset, attention to detail, and ability to work with complex technical information 
• English (proficient level, required) and German (good-to-have)
• Motivation to learn tools, standards, and processes used in large European space programs
• Military service obligations fulfilled (for male Greek citizens)

Benefits

• Base Salary €32K/yr - €45K/yr depending on level of experience, can be negotiated for senior profiles
• Direct involvement in flagship ESA scientific missions (LISA, PLATO) 
• Hands-on training in requirements engineering and DOORS with close mentoring by experienced requirements 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  
• Opportunities for professional growth in systems engineering and space project lifecycle activities 
• Private health insurance, flexible hours, remote work on a case by case basis, training/certification budget, business travel opportunities, and benefit vouchers. 
• Competitive Greek salary based on experience 
• Locations: Athens (preferred) or Heraklion