> Markdown version of [/jobs/ext/3034466-lead-java-full-stack-engineer](https://www.wearedevelopers.com/jobs/ext/3034466-lead-java-full-stack-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Lead Java Full Stack Engineer - **Company:** Cognizant Technology Solutions Corporation - **Location:** Plano, TX, United States - **Experience:** Expert - **Salary:** $65,000.0 - $125,000.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Automation of Tests, Code Review, Continuous Integration, Software Debugging, Dependency Injection, Identity and Access Management, PostgreSQL, Networking Basics, OAuth, OpenID, Performance Tuning, Query Optimization, E2e Testing, SQL Databases, Data Logging, Spring Cloud, GitHub Copilot, Spring-boot, Caching, Indexer, Git, Event Driven Architecture, Production Code, Apache Kafka, Graphql, Data Management, Api Design, Restful APIs, Pagination, Code Restructuring, Api Management - **Published:** September 23, 2026 - **Apply:** https://dejobs.org/x/x/EE4CE4B927F24C1E964C556D24344565/job/ ## About the Role · Advanced hands-on expertise in Java and Spring Boot, including API development, dependency injection, validation, error handling, and performance tuning. · Strong GraphQL experience with schema design, resolvers, federation or composition patterns, query optimization, caching, and API governance. · Strong REST API experience, including contract design, pagination, filtering, idempotency, backward compatibility, and consumer-driven evolution. · Hands-on implementation of OIDC and OAuth 2.0 using JWTs, token flows, scopes, claims, secure session patterns, and least-privilege access controls. · Strong AWS experience designing, deploying, and operating cloud-native applications, including IAM, networking fundamentals, logs, metrics, and alarms. · Advanced experience with Aurora PostgreSQL, including SQL, indexing, query optimization, migrations, and transactional design. · Experience with AWS Neptune, graph modeling, Gremlin queries, and performance considerations for graph workloads. · Experience with Amazon MSK or Kafka, including topics, partitions, consumer groups, schema evolution, delivery semantics, idempotency, retries, dead-letter queues, and monitoring. · Strong Git, CI/CD, and automated testing practices across unit, integration, contract, and end-to-end testing. · Demonstrated proficiency using Claude Code and/or GitHub Copilot responsibly for development, debugging, refactoring, test generation, and documentation., Candidate must be legally authorized to work in the United States without the need for employer sponsorship, now or at any time in the future. ## Description Cognizant is seeking an experienced Lead Java Full Stack Engineer to design, build, and support secure, scalable, cloud-native applications for a leading financial-services client. You will lead technical delivery across Java, Spring Boot, GraphQL and REST APIs, AWS-managed services, data platforms, and event-driven systems while promoting strong engineering standards from design through production support. In This Role, You Will · Lead end-to-end delivery of full-stack solutions using Java, Spring Boot, GraphQL, REST, and AWS-managed services. · Drive architecture and design reviews, including service boundaries, API contracts, data models, and integration patterns. · Develop secure, high-quality, production-grade code; conduct code reviews; and establish engineering standards. · Build and maintain highly available, scalable services with a focus on reliability, performance, cost awareness, and maintainability. · Implement authentication and authorization using OIDC, OAuth 2.0, JWTs, scopes, claims, and secure service-to-service patterns. · Establish observability practices across structured logging, metrics, tracing, alerts, incident readiness, and runbooks. · Evaluate internal and vendor solutions for architectural fit, security, scalability, and operability, and guide adoption decisions. ## Related Videos - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Kubernetes Native Java](https://www.wearedevelopers.com/videos/383-kubernetes-native-java) - [Get started with securing your cloud-native Java microservices applications](https://www.wearedevelopers.com/videos/123-get-started-with-securing-your-cloud-native-java-microservices-applications) - [Delegating the chores of authenticating users to Keycloak](https://www.wearedevelopers.com/videos/1558-delegating-the-chores-of-authenticating-users-to-keycloak) - [Delay the AI Overlords: How OAuth and OpenFGA Can Keep Your AI Agents from Going Rogue](https://www.wearedevelopers.com/videos/1637-delay-the-ai-overlords-how-oauth-and-openfga-can-keep-your-ai-agents-from-going-rogue) ## Related Articles - [Top 10 Java Libraries](https://www.wearedevelopers.com/magazine/364-top-10-java-libraries) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Why Attend a Developer Event in 2026?](https://www.wearedevelopers.com/magazine/688-why-attend-a-developer-event-in-2026) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Liuba Gonta and Yuliya Khadasevic - GitHub Copilot Beyond the Basics - 10 Ways to Elevate Your Coding](https://www.wearedevelopers.com/magazine/490-liuba-gonta-and-yuliya-khadasevic-github-copilot-beyond-the-basics-10-ways-to-elevate-your-coding)