UK Space Jobs

Satcom Payload Architect

As a Satcom Payload Architect, you will design and optimize the technical architecture for next-generation satellite payloads, focusing on digital processing, flexibility, and scalability. You will bridge the gap between service definition and spacecraft delivery, ensuring that all subsystems meet performance requirements and work seamlessly together.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Senior Flight Software Engineer

This role involves designing, implementing, and testing flight software for satellite missions, ensuring reliability and compliance with space standards. You will lead software architecture, mentor junior engineers, and collaborate with hardware and operations teams to optimize mission performance.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Thermal Systems Engineer

As a Thermal Systems Engineer, you will lead the thermal work package for multiple satellite missions, model and analyze spacecraft thermal behavior, and plan and execute thermal tests. You will collaborate with other subsystem engineers, contribute to the product roadmap, and ensure mission success from design to launch.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Electronics Engineer (Power)

As an Electronics Engineer, you will design, develop, and maintain the satellite Electronic Power System (EPS), working closely with senior engineers and cross-functional teams. Your responsibilities include power electronics design, EMC, testing, and PCB design, ensuring the power system is robust and reliable for space missions.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Backend Software Engineer (Ground Segment)

You will design and own backend services and APIs for satellite and mission operations, lead technical design discussions, and collaborate with system engineers and spacecraft operators. The role involves building and maintaining a scalable, automated operations platform using Go, Python, and Kubernetes.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Electronics Operations Engineer

As an Electronics Operations Engineer, you will work at the intersection of engineering, supply chain, and quality, ensuring the manufacturability, traceability, and supply security of electronic components. You'll manage component libraries, interface with suppliers, and support engineering teams with reliable data, all while contributing to the success of space missions.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Propulsion Systems Engineer

This role involves designing, integrating, and delivering propulsion systems for spacecraft, working closely with systems, AOCS, thermal, mechanical, and mission teams. Responsibilities include propulsion architecture definition, performance analysis, trade-off studies, and supporting environmental and functional testing of propulsion hardware.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Senior AOCS Systems Engineer

As a Senior AOCS Systems Engineer, you will lead the development and delivery of advanced AOCS solutions for multiple satellite missions, ensuring technical performance and reliability. You will design, simulate, and test AOCS subsystems, support bids, and collaborate with mission teams and suppliers to drive innovation and operational excellence.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Business Development Opportunities

This role involves identifying and closing new business opportunities across enterprise, institutional, and government markets. You will build strong customer relationships, collaborate with technical teams, and represent Open Cosmos at industry events. The position offers opportunities for growth at various career levels, from early career to established leaders.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Mission Operations Manager

The Mission Operations Manager will oversee the performance and reliability of satellite missions, ensuring high-quality data delivery and customer satisfaction. Responsibilities include monitoring mission health, coordinating incident resolution, and managing relationships with satellite owners and third-party partners.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Test Engineer (Data)

As a Test Engineer in the Data Team, you will ensure the quality and reliability of the DataCosmos platform by defining and implementing testing strategies, building automated tests, and validating data flows. You will collaborate with engineering and product teams to improve testing practices and support CI/CD pipelines.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Earth Observation Presales Engineer

As an Earth Observation Presales Engineer, you will support customer discovery sessions, design EO solutions, and contribute to feasibility studies using satellite imagery and geospatial analytics. You will work closely with business development, product, and engineering teams to develop scalable solutions and support customer adoption of the DataCosmos platform.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Senior Access Layer Engineer

As a Senior Access Layer Engineer, you will lead the development and validation of satellite communication systems, focusing on waveform generation, MAC protocols, and link adaptation. You will work closely with multidisciplinary teams to design and optimize algorithms for LEO environments, using tools like MATLAB, Simulink, and Python.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

System Performance & Modelling Engineer

This role involves developing high-fidelity simulation environments to optimize the performance of LEO satellite communication systems. Responsibilities include building end-to-end simulation frameworks, evaluating system capacity, latency, and reliability, and supporting system-level link budget analysis. The role requires strong skills in system-level modelling, simulation, and performance analysis within satellite or advanced wireless communication systems.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Backend Engineer (DataCosmos)

As a Backend Engineer, you will design and build scalable backend services and APIs for the DataCosmos platform, which transforms satellite data into meaningful insights. You will work with Go and Python, improve platform performance, and collaborate with cross-functional teams to deliver technical solutions for real-world space missions.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

Hybrid Permanent