About us
We are EnduroSat! A fast-growing space scale-up at the forefront of satellite innovation, specializing in advanced software-flexible satellites for commercial, governmental, and scientific endeavors.
As a Senior Spacecraft Systems Engineer you will join our System Design team in Sofia. You will play a central role in the architecture, design, and development of our next-generation FRAME satellite platforms, working at the intersection of all spacecraft subsystems - power, communications, data handling, structures, and thermal.
As a senior member of the team, you will own system-level requirements and budgets, drive design trade-offs, and work hands-on with subsystem engineers, AIT teams, and external partners to take our spacecraft from concept through qualification to flight.
Some of your daily tasks will include:
We are EnduroSat! A fast-growing space scale-up at the forefront of satellite innovation, specializing in advanced software-flexible satellites for commercial, governmental, and scientific endeavors.
- This is more than a job, it's a mission
We are making space universally accessible and redefining the possible - We get things done
We take ownership of what we do and we work hard to make a difference - We are fearless
Transparency is our only way forward. We dare to address and resolve issues head-on - We learn from our mistakes
We deliver, take informed risks, and evolve to achieve our goals. We compare with the best version of ourselves
As a Senior Spacecraft Systems Engineer you will join our System Design team in Sofia. You will play a central role in the architecture, design, and development of our next-generation FRAME satellite platforms, working at the intersection of all spacecraft subsystems - power, communications, data handling, structures, and thermal.
As a senior member of the team, you will own system-level requirements and budgets, drive design trade-offs, and work hands-on with subsystem engineers, AIT teams, and external partners to take our spacecraft from concept through qualification to flight.
Some of your daily tasks will include:
- Define, decompose, and manage system requirements - from top-level mission and customer requirements down to subsystem and component specifications - ensuring full traceability throughout the spacecraft lifecycle
- Develop and maintain system architecture definitions, functional block diagrams, interface definitions, and operational concepts
- Own and iterate system-level budgets (mass, power, data, link) and drive design trade-offs across subsystems
- Support the design, development, integration, and verification of spacecraft subsystems (EPS, communications, on-board data handling, ADCS, structures)
- Work closely with AIT teams during assembly, integration, functional, and environmental test campaigns, and support the resolution of non-conformances
- Interface with suppliers, subcontractors, and customers on technical matters - reviewing deliverables, supporting design reviews, and ensuring requirement compliance
- Produce and review high-quality technical documentation: specifications, interface control documents, verification plans and reports, and design review data packages
- Mentor junior engineers and contribute to the continuous improvement of our systems engineering processes and tools
- Demonstrated experience in the design, development, and delivery of spacecraft systems (power, communications, data handling, etc.)
- Degree in aerospace engineering, electronics, computer science, or a similar technical field
- Experience with defining, tracking, and flowing down requirements from top-level requirements to component requirements
- Ability to communicate through and understand graphical representations - schematics, sequence diagrams, state diagrams
- Strong analytical mindset, attention to detail, and the ability to work across disciplines in a fast-paced environment
- Excellent written and spoken English
- Proficiency in using engineering software and tools for satellite design and analysis, e.g. SolidWorks
- Experience analysing different system budgets such as power, link, and delta-V
- Experience with orbit simulation tools, e.g. STK, GMAT
- Experience with DFMEA
- Basic working knowledge of C/C++ or Python
- Knowledge of UML/SysML
- Project and risk management skills
- Experience with Atlassian tools (Jira/Confluence)
- Familiarity with ECSS standards and formal verification/validation processes
- Fast-paced and delivery-focused culture
We work with well-defined quarterly based objectives, that allow us to fast track the progression of our work and improve as we go - Tough engineering challenges & hard-core R&D
You will be able to work on unique space technology and build next-gen innovations, while mentored by world-recognized space experts - Constant learning and progression
Own your personal growth by navigating through our career progression framework and educational programs - Chance to join our space educational program
Meet international space experts and improve your knowledge and skillset with our hands-on educational program