UK Space Jobs

Senior React Fronted Developer (Data)

Design and build React-based interfaces for a geospatial data platform, transforming complex satellite data into intuitive, high-performance visualisations. Collaborate with data and backend engineers to integrate APIs and optimise front-end performance for large-scale datasets. Lead front-end architecture and mentor team members in best practices for scalable, maintainable UIs.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Satcom Mission Analysis Engineer

This role involves defining and optimising the orbital architecture of a satellite constellation, with a focus on astrodynamics, inter-satellite links, and mission performance. The engineer will model orbital perturbations, calculate pointing and tracking requirements for optical links, ensure regulatory compliance, and integrate simulations into digital twin systems to support reliable global connectivity.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Automation Architect

This role involves designing and leading the automation architecture for satellite mission operations and production systems, spanning ground software, CI/CD pipelines, and distributed infrastructure. The Automation Architect will set technical standards, guide engineering teams, and integrate automation across mission control, satellite operations, and data workflows. It’s a system-level position focused on scalability, maintainability, and cross-team collaboration across Open Cosmos’ space infrastructure.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Sales Lead, Earth Observation Data (Europe)

Lead sales strategy and close strategic deals for Earth Observation data across Europe, targeting government, defence, and commercial sectors. Drive end-to-end sales cycles for satellite data and imagery licensing, working closely with technical and product teams to tailor solutions. Position Open Cosmos’ space-based data capabilities in high-impact customer applications and industry forums.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Data Processing Technical Project Manager

This role involves managing data processing deliverables and products within a satellite data team, coordinating between technical teams and project managers. The focus is on ensuring timely, high-quality delivery using robust software engineering practices. It plays a central role in transforming satellite data into actionable insights for customers and internal platforms.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Quality Control (QC) Engineer (shift based)

The role involves hands-on quality control during satellite build, integration, and testing phases, ensuring compliance with ECSS and ISO9001 standards. The engineer performs inspections, manages non-conformances, supports supplier quality, and maintains traceability across the production lifecycle. Work is conducted on a rotating 24/7 shift pattern at the Harwell site to support continuous satellite manufacturing operations.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent Shift-work

User Terminal Architect

The User Terminal Architect will define and lead the technical architecture of satellite user terminals across fixed, mobility, and low-power form factors. This includes end-to-end system specifications, integration of antenna, RF, and digital subsystems, and trade-offs between performance, SWaP, and manufacturability. The role involves close collaboration with system, payload, and manufacturing teams to deliver scalable, mass-producible terminals for satellite communications.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Verification & Validation Engineer

This role involves ensuring satellite communication systems meet mission-critical requirements through automated testing integrated into agile workflows. The engineer will develop and maintain test frameworks, execute validation in Software- and Hardware-in-the-Loop environments, and collaborate closely with development teams to debug issues and improve system reliability. Focus is on continuous verification of complex, distributed systems using Python and CI/CD pipelines.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Satcom Payload Architect

The role involves defining the end-to-end technical architecture of advanced satellite communication payloads for low Earth orbit (LEO) constellations. You will translate service requirements into detailed technical specifications for RF, digital, and optical subsystems, perform microwave link analysis, and ensure alignment between payload and spacecraft design. The position requires deep systems engineering expertise in satellite communications, with a focus on flexible, high-performance, and SWaP-optimised solutions.

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

Earth Observation Presales Engineer

The Earth Observation Presales Engineer supports customer discovery and solution design by combining satellite imagery, geospatial analytics, and Open Cosmos's platforms. The role involves technical feasibility studies, mission simulations, and customer demonstrations, working closely with business development and engineering teams. It requires strong technical and communication skills to translate customer needs into viable Earth Observation solutions.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Backend Engineer (DataCosmos)

This role involves designing and maintaining scalable backend services and APIs for DataCosmos, a geospatial data platform that processes and delivers satellite data. The engineer will work extensively with Go and Python, cloud-native technologies like Docker and Kubernetes, and contribute to CI/CD and infrastructure improvements. Collaboration with cross-functional teams is key to delivering solutions for real-world space missions.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

Hybrid Permanent

Test Engineer (Data)

A Test Engineer in the Data team ensures the quality and reliability of the DataCosmos geospatial data platform by designing automated and manual tests, validating data flows, and supporting CI/CD pipelines. The role involves testing frontend, API, and data layers while collaborating with engineering and product teams to define test coverage and improve testing practices.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

Embedded Systems Engineer

Design and develop real-time embedded software and firmware for satellite communications systems, spanning both space and ground infrastructure. Work on FPGA-based solutions, low-level hardware control, and high-reliability communication protocols in a multidisciplinary engineering environment. Focus on fault tolerance, performance optimisation, and integration across RF, DSP, and embedded systems.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent

System Performance & Modelling Engineer

Develop high-fidelity simulation frameworks for LEO satellite communication systems, modelling end-to-end performance across orbital dynamics, air interface, payload, and network layers. Analyse system capacity, latency, reliability, and resource allocation to optimise constellation performance and support architectural trade studies.

Open Cosmos Ltd Didcot, OX11 0RL, United Kingdom

On-site Permanent