Senior Software Engineer

<p>At AKQA (part of WPP), we believe in the imaginative application of art and science to create beautiful ideas, products and services. With an entrepreneurial and collaborative approach, we design adaptive digital services and applications that capture the imagination, delivering impressive returns for our clients.</p> <p>Senior Software Engineers at AKQA are inspired by technology and driven by a passion for creating innovative, well-crafted solutions. They thrive in highly skilled, opinionated teams where ideas are exchanged openly and executed with discipline and care. They bring strong product instincts to their work, taking genuine ownership of outcomes rather than just executing tasks, and they consistently look for ways to improve both what they build and how they build it.</p> <p>We are seeking a Freelance Senior Software Engineer to support a forward-thinking investment group building a sophisticated, fintech-adjacent digital platform. This is not a generic backend engagement. You will be working across a modern full-stack TypeScript and Next.js product, contributing to investor-facing interfaces, transactional workflows, admin tooling, and the data integrations that tie it all together. Correctness, security awareness, and architectural clarity matter deeply here, and the ideal candidate brings both the technical depth and the product-minded judgment to deliver with confidence in that kind of environment. This is a remote freelance role from July 1 through December 18, 2026.</p> <p> </p> <p>ROLE REQUIREMENTS</p> <ul> <li>Deliver full-stack feature work across a modern TypeScript and Next.js App Router codebase, including server actions, API routes, and service-layer logic</li> <li>Build accessible, responsive, design-system-driven UI in React, bringing the same care and discipline to the front end as to the back end</li> <li>Design and maintain clean service, domain, and persistence boundaries that support a scalable, maintainable, and auditable codebase</li> <li>Work with PostgreSQL via Prisma and Supabase, or bring comparable depth with relational databases and ORMs</li> <li>Implement and maintain authorization-aware data access patterns, with a strong understanding of auth, session management, and security considerations in a regulated or fintech-adjacent context</li> <li>Build and maintain form-heavy transactional workflows using schema validation approaches such as React Hook Form and Zod</li> <li>Integrate with CMS platforms, ideally Contentful, to support content-driven product surfaces</li> <li>Write meaningful tests across unit, component, and integration layers using Vitest or equivalent tooling, with a focus on testing the flows that matter most</li> <li>Work within a CI/CD pipeline using GitHub Actions and deploy to Vercel, maintaining delivery hygi