Senior System Engineer

ReOrbit is seeking a motivated Senior Systems Engineer to join our team at our headquarters in Helsinki, Finland. In this role, you will lead the design and development of our satellites while mentoring and supporting team members. With your extensive hands-on experience in satellite ecosystems, you’ll hit the ground running and make an immediate impact on our projects. This is a unique opportunity to join a dynamic startup and play a key role in shaping how we develop our systems to push the boundaries of space communications. If you’re passionate about innovation and want to contribute to cutting-edge technology, we’d love to hear from you. Responsibilities System Design: Support the design, integration, and validation of complex space and ground systems, ensuring that every component works in harmony to meet the projects or product’s objectives. Requirements Engineering: Collaborate closely with stakeholders to define and refine both technical and non-technical requirements, ensuring clarity and alignment with mission goals. CONOPS/OPSCON, use cases development Performing feasibility studies Supporting business development with bids, providing technical information and supporting documentation Skills and Requirements At least 10 years' experience working as a space systems engineer, preferably on medium to large GEO satellites. Full lifecycle awareness, through all phases of a project, from requirements to AIT and launch. Solid understanding of NASA and ECSS Standards. Experience developing and executing verification & validation (V&V) test plans, procedures, and reports. Ability to plan and execute integration, verification, and validation (IV&V) test activities. Ability to review, understand, gather and refine stakeholder needs across operations, user, client, and ground segment communities. Familiarity with developing and decomposing technical requirements, conducting feasibility analyses, and supporting conceptual design activities. Working knowledge of trade-off analyses, feasibility studies, and conceptual design reviews. Experience with spacecraft and ground system models (e.g., Flight Dynamics, AOCS, propulsion, thermal, payload, TT&C, etc.). Strong communication and collaboration skills to interface with software engineers, technical managers, product assurance and configuration/documentation management (CADM). Proven ability to perform integration, verification, and validation testing in complex systems. Experience with evaluating simulation infrastructure, spacecraft, and ground system models. Desired Experience working on geo-stationary communication satellite projects Holistic thinking: Ability to approach problems and solutions with a comprehensive view, understanding how all subsystems and components interact within the larger system to achieve overall objectives. The candidate should be able to consider not just the technical aspects but also operational, environmental, and human factors in decision-making. What does ReOrbit do? ReOrbit builds the foundation for the next generation of space applications by transforming satellites into truly intelligent, interconnected platforms, defined by software. Our satellite design philosophy revolves around the idea that satellites must network, communicate with each other and thus improve mission efficiency. How can this be achieved? Thanks to a flexible software-first architecture, where all these aspects are dealt with upfront in the mission concept, as integrated functionalities. ReOrbit’s top-notch team of software engineers and system architects develop in-house software, procure hardware from the best-in-class suppliers, and seamlessly integrate the components to create flexible and secure satellites. Today, we are a rapidly growing company building a very strong multidisciplinary team to support our activities. We are headquartered in Helsinki, Finland with subsidiaries in Bristol, UK and Bariloche, Argentina. Working at ReOrbit At ReOrbit, we are focused on building a strong team as we believe nothing can be accomplished without innovative, humble and curious minds working together on a common goal. We’re all about fostering an inclusive, dynamic environment where equality and diversity are our strength. We offer Challenging but rewarding environment – you will thrive if you are always reflecting on how to make things better. Your ideas will be heard. Ambitious and supportive network of people, who are motivated to change the space industry, bringing expertise from both classic and new space. Benefits such as lunch vouchers, events, parties, occupational health care and additional health insurance - but most importantly a possibility to be a part of a unique and diverse team, connected by similar mindset and sense of humor. We like to spend time together! You can choose activities whichever is to your liking – runOrbit, climbOrbit; become ping pong or board games champion. We support relocation and integration into Finnish society. Please, submit your application as soon as possible - we are excited to hear from you and can’t wait to discover your unique skills and experiences. The Company may require a security clearance for certain positions. Any such security clearance will be conducted in accordance with applicable law and the Company's relevant policies.