Senior Systems Engineer

Senior Systems Engineer

Open Cosmos

Porto, Portugal

What will you be doing?

As a Senior Systems Engineer at Open Cosmos, you'll play a key role in delivering fully integrated space missions from concept to orbit. You’ll be the technical driving force, bringing together multidisciplinary teams to turn ambitious ideas into real-world impact.

• Own the technical delivery of space missions — you're the go-to person for mission architecture and execution;
• Lead cross-functional teams to develop consistent, reliable system-level solutions;
• Define and manage mission requirements and drive verification across the lifecycle;
• Run system-level analysis, perform trade-offs, and ensure optimal design decisions;
• Develop and implement MBSE (Model-Based Systems Engineering) tools, processes, and methodologies;
• Conduct FMECA and design FDIR strategies to enhance mission resilience;
• Create and maintain systems-level documentation to ensure traceability and technical excellence;
• Support pre-sales, bids, operations, and customer teams with expert technical insight;
• Thrive under pressure, take initiative, and drive progress without waiting for instructions;
• Embrace complexity, push boundaries, and always look for better ways to deliver.

What you will need to succeed

We’re looking for a bold, hands-on systems thinker with the technical depth and leadership to deliver space missions from the ground up.

• End-to-end experience in satellite systems engineering — from concept to deorbit;
• Proficient in MBSE tools and methodologies;
• Skilled in FMECA, FDIR, and CONOPS development;
• Strong knowledge of core satellite subsystems:
  • Power systems;
  • On-board computers;
  • AOCS;
  • Communications;
  • Propulsion;
  • Mechanical/thermal systems.
• Hands-on AIT experience (Assembly, Integration, Testing);
• Familiar with the regulatory landscape: frequency allocation, export control, insurance, and debris mitigation;
• Proven track record managing supplier relationships and cross-team communication.