Executive Assistant to COO - 12 month FTC

We are seeking an experienced and highly capable Executive Assistant to the COO to operate as a true right-hand partner on a 12-month maternity cover basis. This is a senior, hands-on role requiring excellent judgement, strong business acumen, and the ability to operate with discretion at a C‑suite level.

The successful candidate will support the COO with complex diary management, stakeholder engagement, and project coordination, while also providing broader administrative support to the office of the COO. This role plays a key part in enabling the efficiency, focus, and effectiveness of one of SThree’s most senior leaders.

About us

SThree is the global STEM workforce consultancy, fusing ambition, expertise and technology. We advise businesses, build expert teams and deliver project solutions, to outpace tomorrow, together.

We’ve been in STEM for more than 39 years– a global team with local expertise across specialist sectors in Engineering, Life Sciences and Technology.

We aspire to be the game-changers in STEM. We are all in, we build partnerships, we think big, and we do the right thing. We bring skilled people together, whatever the speed, scale and scope of the ambitions, to build the future.

What you’ll be doing

• Acting as the primary point of contact for the COO, internally and externally
• Managing complex diaries, inboxes, meetings, and international travel
• Preparing high-quality correspondence, reports, presentations, and meeting packs
• Ensuring the COO is fully briefed pre‑meeting and supported with follow‑up actions
• Managing stakeholder relationships across the business globally
• Coordinating ad‑hoc projects, events, and initiatives
• Handling sensitive information with absolute discretion and professionalism
• Providing occasional cover for other senior Executive Assistants

What we’re looking for

• Proven experience as a C‑suite Executive Assistant / Personal Assistant, ideally within a technology or professional services environment
• Advanced proficiency across the Microsoft Office Suite
• Strong experience of minute taking and presentation preparation
• Demonstrated experience managing events and complex logistics
• Commercially minded with a strong sense of priority and outcome focus
• Proactive, calm under pressure, and consistently one step ahead
• Confident decision-maker with strong problem-solving skills
• Highly organised with excellent time management and attention to detail
• Trusted to handle sensitive and confidential information with discretion

What's in it for you

• Hybrid working options for flexibility.
• Bonus linked to company and personal performance.
• 28 days holiday plus public holidays, with an annual leave purchase scheme.
• Private healthcare, discounted dental insurance, and health cashback scheme.
• Paid volunteering days and caregiver leave.
• Access to retail discounts and our company share scheme.

What we stand for

We’re committed to ensuring that every colleague, candidate, and member of our community experiences fair, equitable, and respectful treatment. We strive to create an environment where everyone belongs, feels valued, and is supported to thrive. If you require any assistance or reasonable adjustments during the application process, please let us know. We’re here to help.