Space Systems Integrator for Cybersecurity
First seen by Alion on Sep 30, 2026.
📍 Tallinn / Tartu, Estonia
We are looking for a Space Systems Integrator to join a cross-functional product team building a cyber security module for spacecraft. Our primary target is mid-LEO Earth observation, science missions, commercial constellations.
You will be the team's expert on how spacecrafts are put together, across mission classes from CubeSats to large platforms, and on the buses, redundancy schemes, and architectural patterns our customers live with. You will join before the baseline exists.
Your first job is to set it: the buses we commit to, the interface behaviours we guarantee, the way the module participates in a customer's redundancy scheme. These are decisions the product will live with for years.
Your main responsibilities will include
Writing and owning the interface control documents, integration guides, and reference architectures that customers' integration engineers build to
Acting as design authority for everything observable at the connector i.e. interface behaviour, timing, bus configuration
Specifying and validating spacecraft-side simulation and test configurations with the Test Automation Engineer
Advising customers on placement: how the module fits their redundancy, fault-handling, and timing architectures
Owning the system-level technical relationship with the hardware vendor
Engaging early in discovery to surface system-level risks and options the rest of the team may not see
Supporting customers through integration - pre-sales consultation, integration reviews, and debugging at the spacecraft level when needed
Directing customer integration experience back into the product
As a successful candidate, you must have
Direct, hands-on spacecraft experience, i.e contribution to the architecture, integration, or operation of at least one real spacecraft that flew or was built to fly (coursework, simulation, and pure research roles do not meet this bar on their own)
Architectural breadth across spacecraft scales - practical familiarity with how nanosats, smallsats, and larger platforms are architected, where they differ, and what each demands of onboard components
Genuine working depth on several onboard buses and protocols, such as Time-Triggered Ethernet, standard Ethernet, SpaceWire, CAN, UART/RS-422/485, I²C/SPI, MIL-STD-1553, CCSDS Space Packet Protocol - meaning how they are used, configured, made redundant, and debugged on real vehicles, with test equipment in hand
Experience with spacecraft redundancy architectures and how onboard components participate in them
Systems engineering rigour - requirements decomposition and traceability, technical budgets, margin management; familiarity with NASA NPR 7120/7123 and the SE Handbook, ECSS-E-ST-10 / M-ST-10, or equivalents
The communication skills to explain and defend interface decisions to external engineering teams, and to write clear and precise documentation
You will stand out by having any of the following:
Direct customer integration experience - application engineering, field engineering, or supplier-side integration support on a flight programme
Production embedded development skill in C, C++, or Rust - letting you prototype reference integrations and bus emulations, and contribute directly to the testbench rather than only specifying it; genuinely differentiating, not required
FDIR design experience - fault trees, autonomy logic, or safe-mode behaviour on a spacecraft that flew
Mission operations exposure - flight ops support or console shifts
Hands-on instrumentation and debugging fluency - driving bus analyzers and oscilloscopes, reading a packet dump, reading interface-layer C well enough to catch implementation drifting from the ICD, and scripting your own analysis tooling
We are offering
To be a part of different exciting Cybersecurity Space Domain Projects
Supporting and motivated team
Flexible working arrangements
Possibility to attend work-related conferences or trainings of your own choice
Wide range of company benefits (paid health days, sports allowance, massage in the office, different events etc)
Private office space in Tartu or Tallinn
Why you'll enjoy working at Cybernetica?
We value an atmosphere of learning, collaboration and proactive problem solving, paying great attention also to work-life balance.
Global impact 🌎
Work on tech used in Japan, UAE, the Bahamas and more than 30 other countries.Keep learning 🎓
Go to school while working. Learn new skills through paid seminars and conferences.Flexible office arrangement 💻
Home office, office office, remote office - choose your own location!Bonuses & compensations 💶
Compensation for tech gadgets & paid work travel expenses, hefty referral bonus.Sound mind & healthy body 👟
5 paid days off per year for either illness or mental health, sports compensation.Supportive team 👏
We have over 100 employees in both of our offices in Tallinn and Tartu.Sander Valvas, Head of Department
“We have crafted a culture in Cybernetica that is supportive, inclusive and equal.”