Senior Full-Stack Software EngineerLocation: Remote (UK) Salary: Up to £90,000 + benefits About the CompanyJoin a growth-stage technology company who are building next-generation identity, entity resolution and risk intelligence platforms used by banks, governments and regulated organisations. Their software helps organisations understand exactly who they''re doing business with, combining large-scale data processing, entity resolution, graph intelligence and modern cloud architecture.Join an engineering team solving genuinely difficult technical problems - processing millions of records through asynchronous, event-driven pipelines that power compliance workflows where correctness, transparency and performance matter. You''ll have real ownership, from architecture through deployment, across new and existing products.What You''ll DoDesign, build and ship features across the full stack (Fastify microservices, React/MUI, shared TypeScript packages in a pnpm monorepo)Design and evolve Back End services for high-volume, distributed screening workloadsBuild event-driven pipelines (AWS SNS/SQS) with idempotent consumers, DLQs and batch processingDesign clean APIs and contribute to architecture across multiple productsIntegrate external identity, KYC and payments platforms (eg Senzing, Auth0, Stripe)Own services end-to-end: API design, MongoDB data modelling, testing, observability, deploymentBuild secure systems (JWT/OIDC, fine-grained authorisation, IDOR protection, audit ..... full job details .....