Aim high, go beyond!

At Open Cosmos, we’re on a mission to make space accessible for everyone. We design, build and operate satellites that help tackle some of the world’s biggest challenges — from climate monitoring to connectivity.

We’re scaling rapidly across Europe and beyond, and with that growth comes increasing complexity, opportunity, and ambition. To support this next chapter, we’re hiring a Chief of Staff to the CEO — a high-trust, high-impact role at the very centre of the organisation.

This is not a traditional support role.

As Chief of Staff, you’ll be the CEO’s strategic execution partner and operational extension, ensuring that Open Cosmos’ priorities are translated into action — and delivered with pace, clarity and discipline.

For the first 6 months, you’ll shadow the CEO closely, building deep context, understanding decision-making at the highest level, and helping to drive the business forward.

What You’ll be doing

• Acting as the CEO’s trusted deputy

• Representing the CEO in selected internal and external forums

• Driving follow-through on key decisions and commitments

• Protecting the CEO’s focus on the highest-impact priorities

• Translating company strategy into clear, actionable priorities

• Driving the most critical cross-functional initiatives

• Identifying risks, misalignment and execution bottlenecks — and resolve them

• Lead the CEO Office and partner closely with the CEO’s EA

• Establishing a strong operating rhythm across executive forums, board cycles and planning cadences

• Aligning strategy, communications and CEO-led initiatives into one coherent model

• Bringing together complex reporting into clear executive and board-level insight

What You’ll Bring

• Strong understanding of how strategy translates into execution in a complex, scaling international business

• Exceptional ability to bring structure and clarity to ambiguity

• Excellent analytical capability and experience synthesising business performance data

• Strong commercial judgement and organisational awareness

• Confident engaging and influencing senior leaders and board-level stakeholders

• Fluent English and Spanish; additional languages are a plus

• Unquestionable integrity and discretion

• Comfortable operating at pace and intensity and travelling regularly

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

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.

Division

Exec

Department

EXEC

Locations

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

Remote status

Hybrid

Employment type

Full-time

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