Senior Frontend Engineer - React / TypeScript Location: UK - 1 day per week in Central LondonSalary: Up to 100K + share optionsPlease note: We are unable to provide visa sponsorship for this role. Candidates must have existing right to work in the UK. The CompanyWe''re working with a fast-growing accounting-tech startup building automation and AI-powered technology to eliminate the repetitive, spreadsheet-heavy work that in-house finance teams deal with every month. The business has recently passed 1m ARR and is growing quickly, having doubled revenue in 2025. With an established product, growing customer base and international presence, they''re now expanding the team as they enter their next phase of growth. This is still a genuine startup environment where individual engineers can have a significant impact on the product, technology and direction of the business. The RoleWe''re looking for a Senior Frontend Engineer to take a key role in the continued development of the company''s core product. You''ll report directly to the CPTO and work closely with engineering, product and the wider business to build intuitive, reliable and scalable technology used by finance teams. This is a hands-on position within a small engineering team. You''ll have significant ownership, contribute to technical and product decisions, and see the direct impact of what you build. You''ll need to be comfortable balancing speed and quality: finding pragmatic ways to test product ideas quickly, ..... full job details .....