Office Manager

Mossessian Architecture is London-based international, award-winning practice recognized for excellence in architecture, masterplanning, technological innovation, and research. Our reputation continues to grow for delivering work of the highest calibre, with projects that combine cultural sensitivity, design ingenuity, and forward-looking sustainability, with an expanding portfolio of ambitious international projects.

We are now looking for a talented Office Manager to join our team and play a pivotal role in the next chapter of our growth.

Office Manager

Mossessian Architecture is seeking a proactive Office Manager to take ownership of our operations and keep our international studio running seamlessly. You’ll combine strong organisational and accounting skills with an eye for detail, ensuring smooth processes for a growing team currently at 25.

As the central point of coordination, you’ll support both people and projects, driving efficiency and enabling growth. You’ll be part of a dynamic, multicultural team where your impact on the studio’s success will be clear and valued.

• Champion people & culture

Lead onboarding, contracts, and HR processes, creating a smooth and welcoming experience for our international team.

• Ensure compliance

Support the team in meeting UK employment law requirements and best practice.

• Partner with leadership

Work hand-in-hand with the Business Director to keep operations efficient and aligned with company goals.

• Drive financial clarity

Monitor cash flow, prepare project accounts, and support financial stability and profitability across our portfolio.

• Enable design excellence

Support project teams by exploring and implementing AI processes and systems that support quality, efficiency and productivity.

• Shape our commercial edge

Collaboratively prepare proposals and keep key documentation sharp, accurate, and client-ready.

• Run the show

Oversee all aspects of office administration, from day-to-day operations to occasional evening events, ensuring the studio runs seamlessly.

We’re looking for someone dynamic and detail-driven, with:

• Experience in an architecture, design or construction office
• Exceptional attention to detail with a strong sense of autonomy but able to work collaboratively across different disciplines
• Outstanding organisational skills and the ability to juggle multiple priorities in a fast-moving studio
• Familiarity with UK employment law, compliance and processes
• Demonstrable experience in producing presentations, reports and proposals
• Experience in bookkeeping, accounting preparation, project accounting and financial reporting is highly desirable
• Adobe InDesign skills are highly desirable
• Proficiency in Microsoft Excel, Accounting software

• Very competitive salary, based on your skills and experience
• A dynamic and creative work environment with real opportunities for growth
• Exposure to high-level architectural concepts across international projects
• The chance to be part of a young, energetic, and growing team
• Benefits package including private healthcare, pension, and life insurance

Suitably qualified applicants should email their CV, covering letter and portfolio samples as PDFs and any queries to: [email protected] with ”Office Manager_(your name)” in the subject line. Cover letter should include indication of potential visa requirement.