Space Systems Integrator for Cybersecurity

About the role

Cybernetica is looking for a Space Systems Integrator to join a cross-functional product team building a cybersecurity module for spacecraft, targeting mid-LEO Earth observation, science missions and commercial constellations. You will be the team's expert on how spacecraft are assembled, from CubeSats to large platforms, and on buses, redundancy schemes and architectural patterns. You will join before the baseline exists and define the buses, interface behaviours and redundancy participation that the product will live with for years.

Key responsibilities

• Write and own the interface control documents, integration guides and reference architectures that customers' integration engineers use.
• Act as design authority for everything observable at the connector: interface behaviour, timing and bus configuration.
• Specify and validate spacecraft-side simulation and test configurations with the Test Automation Engineer.
• Advise customers on how the module fits their redundancy, fault-handling and timing architectures.
• Own the system-level technical relationship with the hardware vendor.
• Engage early in discovery to surface system-level risks and options.
• Support customers through integration, including pre-sales consultation, integration reviews and debugging at the spacecraft level.
• Turn customer integration feedback back into the product.

Required profile

• Direct, hands-on spacecraft experience contributing to the architecture, integration or operation of at least one real spacecraft that flew or was built to fly.
• Familiarity with how nanosatellites, smallsats and larger platforms are architected.
• Experience with spacecraft redundancy architectures.
• Systems engineering rigour: requirements decomposition and traceability, technical budgets, margin management; familiarity with NASA NPR 7120/7123/7123 and the SE Handbook, ECSS-E-ST-10 / M-ST-10 or equivalents.
• Ability to explain interface decisions to external engineering teams and write clear documentation.

Required skills

• Onboard buses and protocols: Time-Triggered Ethernet, Ethernet, SpaceWire, CAN, UART/RS-422/485, I2C/SPI, MIL-STD-1553, CCSDS Space Packet Protocol.
• Nice to have: production embedded development in C, C++ or Rust; FDIR design experience; mission operations exposure; hands-on instrumentation and debugging with bus analyzers and oscilloscopes.

What we offer

• Flexible office arrangement.
• Support for work-related equipment, business travel and an employee referral program.
• 5 extra paid health days per year, sports and wellness benefits.
• Professional training, conferences and growth opportunities within a team of over 200 colleagues in Tallinn and Tartu.