Principal Design Lead (Maths Mastery Secondary) Reports to: Head of Product Location: Currently operating hybrid working in our West London Office Contract: Fixed Term (until March 2028 - subject to change) Pattern: Full Time (standard hours 9am - 5.30pm) Closing date: 05/09/2025 1st round Interviews: 09/09/2025 and 10/09/2025 2nd round Interviews: 11/09/2025 and 12/09/2025 Salary: £50,000 to £60,000 (depending on experience) The Principal Design Lead (Maths Mastery Secondary) is responsible for inputting into and implementing best practice and the programme educational vision in new developments in the secondary maths programme. They understand classroom best practice, how the programmes are used in Ark and partner schools, any gaps or needs, and they contribute to the development of the concept, create and revise the resources and create new developments across the components of the programmes. They also select, train and manage a team of high-quality curriculum and assessment writers, including internal design leads, to create content, ensuring adequate briefing and quality control. Through ensuring the consistent high quality of the secondary maths programme, the Principal Design Lead plays a key role in both its impact and reach. The Principal Design Lead (Maths Mastery Secondary) will report into Head of Product. This role is currently operating hybrid working in our West London Office on a fixed term basis working full time. 1st round interviews will be taking place vi