Top Tech Jobs & Startup Jobs in London

Design, implement, and scale Cloud Identity solutions on GCP; integrate with external IdPs using SAML/OIDC/OAuth; ensure secure, high-performance authentication; collaborate cross-functionally; perform code reviews, troubleshooting, and documentation.

Lead design, build, and maintain scalable Android mobile apps and related backend microservices. Mentor engineers, drive technical decisions, improve mobile-first APIs, champion quality, debugging, automation, and performance, and collaborate across teams to deliver production-ready, secure e-commerce/QSR solutions.

Design and execute manual and automated tests for Google Cloud Identity. Perform API and security testing, identify and report bugs and vulnerabilities, validate fixes through regression testing, participate in code reviews, automate test processes, and document test cases and findings.

Design, build, and maintain AWS infrastructure as code with Terraform; develop Golang automation to improve SDLC; deploy and manage Kubernetes workloads; implement CI/CD pipelines; monitor, troubleshoot, and optimize cloud infrastructure for reliability and scalability.

Lead product design work across the user-centred process: research, wireframes, prototypes, high-fidelity designs, and developer handover. Collaborate with product, UX, engineering and research teams, iterate from usability findings, maintain design system consistency, and produce native iOS and Android designs following platform guidelines.

Design, build, and operate multi-region AWS platforms and cloud networking (VPCs, Transit Gateway, PrivateLink). Automate infrastructure with IaC, implement security controls, enable cross-region routing, ensure HA/DR, monitor with CloudWatch/X‑Ray, troubleshoot networking/latency, and collaborate on CI/CD and platform self-service.

Senior production-facing engineer responsible for implementing and operating scalable, resilient software systems. Lead adoption of engineering best practices, CI/CD, GitOps, IaC, containerisation, observability, incident and problem management, and Agile delivery across global teams while coaching peers and managing stakeholders.

Lead mobile architecture strategy across hybrid, cross-platform, and native apps. Design secure offline-first solutions with biometric tokenization, encrypted local storage, background sync, and secure session handling. Define performance strategy for LLM-backed workflows and collaborate with AI and backend teams for scalable integration.

Design and deliver user-centred product experiences from research and concept through high-fidelity designs and handover. Create wireframes, prototypes, user flows, and design systems; collaborate with product, engineering, and research teams; iterate from usability findings; ensure platform-specific native designs aligned with brand guidelines.

Support the Head of Client Delivery Transformation to scope and drive transformation programmes: map current processes, evaluate technology, gather cross-functional requirements, plan deployments, and redesign payment and reconciliation journeys to reduce manual work and enable automation.