Java Fullstack Engineer

h3Hungry for a challenge? /h3 pThat's good, because at Just Eat Takeaway.com (JET) we believe everything is possible, or, as we say, everything is on the table. We are a leading global online food delivery marketplace. Our tech ecosystem connects millions of active customers with hundreds of thousands of connected partners in countries across the globe. /p pOur mission?

To empower every food moment around the world, whether it's through customer service, coding, or couriers. /p ul lipbJob title: /b Java Fullstack Engineer /p /li lipAvailable in 2 locations /p /li lipFull time /p /li /ul h3The Opportunity: /h3 pWe are looking for a proactive software engineer with a strong backend foundation and full-stack capabilities to join our Identity Access Management (AuthN/AuthZ) team. As a Full-Stack Engineer, you will bring solid experience in security architectures, identity systems, and distributed microservices to the table. /p pIn this role, you will be instrumental in building high-throughput authorization services, extending enterprise authentication workflows, maintaining developer SDKs, and delivering intuitive frontend interfaces for our global ecosystem. /p pbIn this role you'll have the responsibility to: /b /p ul lipbBuild Scale Identity Services: /b Design, develop, and maintain enterprise Authentication infrastructure built primarily on bJava and Keycloak /b, alongside high-concurrency Authorization microservices in bGo /b and bKotlin /b. /p /li lipbDeliver End-to-End Features (React): /b Build clean, secure, and responsive frontend applications and admin dashboards using bReact /b to support seamlessly integrated user and partner identity journeys. /p /li lipbSupport Polyglot Ecosystems Tooling: /b Support client-side b.NET SDKs /b and write bPython /b automation scripts to streamline developer onboarding, authorization checks, and ops automation across JET teams. /p /li lipbDrive Cloud Infrastructure Reliability: /b Package, deploy, and scale microservices using bDocker /b, bKubernetes (k8s) /b, and bAWS /b, ensuring high availability, fault tolerance, and tight security controls. /p /li lipbElevate Technical Standards: /b Implement modern security patterns (OAuth2, OIDC, RBAC/ABAC), adhere to observability standards, and actively participate in collaborative architectural reviews and team knowledge sharing. /p /li /ul h3What Will You Bring to the Table? /h3 ul lipbSolid Java Backend Experience: /b Commercial experience in backend engineering, with a strong primary focus on bJava /b, and comfort working in a polyglot environment (Go, Kotlin). /p /li lipbDomain Knowledge in AuthN AuthZ: /b Hands-on experience with identity protocols (OAuth 2.0, OpenID Connect, SAML) and custom/open-source identity providers such as bKeycloak /b. /p /li lipbFrontend Capabilities: /b Nice to have hands-on proficiency or willing to work with bReact /b (JavaScript/TypeScript) to deliver modern, end-to-end full-stack solutions. /p /li lipbCloud Container Experience: /b Experience operating services in production with bKubernetes (k8s) /b, bDocker /b, and bAWS cloud services /b. /p /li lipbSDK Scripting Versatility: /b Familiarity or comfort working with b.NET /b (for internal client SDK maintenance) and bPython /b (for automation and tooling). /p /li lipbAI-Assisted Development SRE Mindset: /b Comfortable leveraging AI coding assistants to accelerate development, paired with an operational mindset focused on monitoring and reliability. /p /li /ul h3At JET, This Is On The Menu /h3 pOur teams forge connections internally and work with some of the best-known brands on the planet, giving us truly international impact in a dynamic environment. /p pFun, fast-paced and supportive, the JET culture is about movement, growth and about celebrating every aspect of our JETers. Thanks to them we stay one step ahead of the competition. /p