Senior Java Full Stack Developer

Company: Cognizant Technology Solutions
Location: Plano
Posted on: March 31, 2026

Job Description:

We are seeking a Senior Java Full Stack Developer to architect, build, and scale API-first platforms and integrations. This role requires deep expertise in Java and Spring Boot, combined with front-end proficiency in React/TypeScript, to deliver end-to-end solutions. You will lead the design and delivery of high-volume APIs, cloud-native microservices on AWS, and guide teams on best practices for reliability, security, and observability. Work model This is a hybrid role based on business requirements in Columbus, OH and/or Plano, TX. Regardless of work arrangement, we support a healthy work–life balance through our wellbeing programs. Working arrangements may change based on project or client needs. Important Disclaimers: Please note: A few of our roles may require in-person interviews at Cognizant offices or client locations, depending on project or client needs. 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 Key Responsibilities Architecture & API Design Own end-to-end API architecture (REST/GraphQL), including resource modeling, error schemas, versioning, and contract testing. Design domain-driven microservices, event-driven patterns (Kafka/SNS/SQS), and distributed workflows. Define integration patterns (webhooks, event streaming, async queues, CDC) and Backend-for-Frontend (BFF) layers. Delivery & Engineering Build Java 17 / Spring Boot services with JPA/Hibernate, Spring Security, WebFlux, and Resilience4j. Establish and enforce API standards (OpenAPI/Swagger), SDK generation, and automated testing. Cloud & DevOps (AWS) Architect and operate workloads using ECS, EKS, Lambda, API Gateway, Route 53, RDS/Aurora, DynamoDB, and Redis. Implement secure CI/CD pipelines (GitHub Actions/Azure DevOps/Jenkins) and IaC (Terraform/CloudFormation). Drive observability with distributed tracing, structured logging, metrics, and SLOs. Leadership & Collaboration Mentor engineers, lead design/code reviews, and foster engineering excellence. Collaborate with Product, Architecture, and Security teams on roadmaps and prioritization. Champion documentation: API specs, runbooks, postmortems, and playbooks. Required Qualifications 8 years of professional software engineering experience; 3 years architecting cloud-native services on AWS. Expertise in Java 11/17, Spring Boot, REST, JSON, OpenAPI, and asynchronous messaging (SNS/SQS/Kafka). Strong knowledge of integration patterns, API versioning, schema evolution, and contract testing. Proficiency in SQL (PostgreSQL/MySQL/Aurora), NoSQL (DynamoDB/DocumentDB), and caching (Redis). Skilled in CI/CD, IaC, Docker, and container orchestration (ECS/EKS). Solid observability and performance tuning experience. Security-first mindset with IAM, KMS, WAF, and input validation. Front-end capability with React TypeScript (or Angular). Excellent communication and mentoring skills. Preferred Qualifications Experience with event-driven architectures (EventBridge/Kinesis, CDC, saga patterns). GraphQL (Apollo/Federation), API monetization, and developer portal experience. Multi-account AWS strategy, service mesh (App Mesh/Istio), and Kubernetes (EKS/Helm). Knowledge of regulated environments (PCI, SOC 2, HIPAA) and data privacy (GDPR, PII). Salary and Other Compensation: The annual salary for this position is between $81,000 – $141,500 depending on experience and other qualifications of the successful candidate. This position is also eligible for Cognizant’s discretionary annual incentive program, based on performance and subject to the terms of Cognizant’s applicable plans. Benefits: Cognizant offers the following benefits for this position, subject to applicable eligibility requirements: • Medical/Dental/Vision/Life Insurance • Paid holidays plus Paid Time Off • 401(k) plan and contributions • Long-term/Short-term Disability • Paid Parental Leave • Employee Stock Purchase Plan Disclaimer: The salary, other compensation, and benefits information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law. The working arrangements for this role are accurate as of the date of posting. This may change based on the project you’re engaged in, as well as business and client requirements. Rest assured; we will always be clear about role expectations. Applicants may be required to attend interviews in person or by video conference. In addition, candidates may be required to present their current state or government issued ID during each interview. The Cognizant community: We are a high caliber team who appreciate and support one another. Our people uphold an energetic, collaborative and inclusive workplace where everyone can thrive. Cognizant is a global community with more than 300,000 associates around the world. We don’t just dream of a better way – we make it happen. We take care of our people, clients, company, communities and climate by doing what’s right. We foster an innovative environment where you can build the career path that’s right for you. About us: Cognizant is one of the worlds leading professional services companies, transforming clients business, operating, and technology models for the digital era. Our unique industry-based, consultative approach helps clients envision, build, and run more innovative and efficient businesses. Headquartered in the U.S., Cognizant (a member of the NASDAQ-100 and one of Forbes World’s Best Employers 2025) is consistently listed among the most admired companies in the world. Cognizant is an equal opportunity employer. Your application and candidacy will not be considered based on race, color, sex, religion, creed, sexual orientation, gender identity, national origin, disability, genetic information, pregnancy, veteran status or any other characteristic protected by federal, state or local laws. Disclaimer: Compensation information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law. Applicants may be required to attend interviews in person or by video conference. In addition, candidates may be required to present their current state or government issued ID during each interview.

Keywords: Cognizant Technology Solutions, Keller , Senior Java Full Stack Developer, IT / Software / Systems , Plano, Texas