What will you be doing?

In this role, you’ll:

• Support the full employee lifecycle, including onboarding, employee changes and leavers
• Coordinate end-to-end onboarding activities, making sure contracts, documentation, system access and first-day arrangements are completed on time
• Support monthly payroll administration by preparing, checking and updating employee data and working with external payroll providers
• Maintain accurate employee records and ensure the HRIS is kept up to date
• Carry out right-to-work checks and support people compliance requirements
• Act as a first point of contact for people-related queries, escalating where appropriate
• Prepare and manage people documentation, letters and reports
• Support the creation, review and update of people policies and processes across multiple geographies
• Review, collate and summarise employee survey data, producing clear reports to support people initiatives and decision-making
• Provide general administrative and operational support to the People Team as needed

What You’ll bring

You’ll bring a strong sense of organisation, care and curiosity, with the ability to support people operations in a growing business.

You’ll demonstrate:

• The ability to manage administrative and operational tasks accurately across the employee lifecycle
• Strong attention to detail, particularly when working with employee data, payroll inputs and compliance requirements
• Good organisational and time-management skills, with the ability to juggle multiple priorities
• Clear written and verbal communication skills, with a professional and approachable style
• Comfort using digital tools such as HR systems, Microsoft Office and Google Workspace
• An understanding of confidentiality, data protection and the importance of handling People information responsibly
• A proactive mindset, with the willingness to learn and develop in a fast-growing environment
• The ability to work independently while contributing positively as part of a team
• A practical, solutions-focused approach and openness to improving how things are done

For this role you can be based in any of our locations:

• Harwell, UK
• Barcelona, Spain
• Porto, Portugal
• Athens, Greece

To apply, you must have the legal right to work in your chosen location.

Please submit your application and CV in English

Why Open Cosmos?

• Work at the cutting edge of space technology with customers around the globe.
• A mission-driven company making space accessible to help solve real-world challenges.
• A diverse, ambitious, and supportive team.