Lead Java Full-Stack Engineer — AWS, AI & Microservices

Cognizant Technology Solutions Corporation; New York (NY); On-site; USD 75,000 - 124,000; Full time

Benefits offered by this job

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

Job summary

Cognizant Technology Solutions Corporation seeks a Lead Java Full Stack Developer to design, build, and scale API-first, cloud-native applications using Java, AWS, React, and AI-assisted technologies. You will collaborate with product, design, data, and risk stakeholders to deliver secure and reliable tech solutions.

Responsibilities include end-to-end development across front and back ends, building scalable AWS-based systems with Docker/Kubernetes, and integrating AI capabilities.

Qualifications

• 10+ years of professional software engineering experience, including 3+ years designing or architecting cloud-native services on AWS.
• Strong hands-on expertise with Java 11/17/21, Spring Boot, microservices, REST APIs, JSON, OpenAPI, asynchronous messaging, and API integration patterns.
• Full-stack development experience with React, TypeScript/JavaScript, Node.js, and Java/Spring Boot, including scalable API and microservices development.
• Experience designing and deploying cloud-native applications on AWS using Docker, Kubernetes, ECS/EKS, serverless technologies, Kafka, SNS/SQS, SQL, and NoSQL databases.
• Strong engineering experience with CI/CD, infrastructure as code such as Terraform or CloudFormation, automated testing, observability, performance tuning, and application security.

Responsibilities

• Design, build, and scale cloud-native, API-first applications using Java, Spring Boot, microservices, REST APIs, and event-driven architecture.
• Develop end-to-end capabilities across the technology stack using React, TypeScript/JavaScript, and Node.js on the front end and Java/Spring Boot on the back end.
• Build and operate scalable solutions on AWS using technologies such as Docker, Kubernetes, ECS/EKS, serverless computing, Kafka, SNS, and SQS.
• Integrate AI capabilities using technologies such as agentic AI, LLMs/SLMs, MCP, RAG, agent orchestration frameworks, and AI-assisted automation.
• Establish strong engineering practices across CI/CD, automated and performance testing, infrastructure as code, observability, security, and application performance.

Skills

Java

Spring Boot

AWS

React

TypeScript/JavaScript

Node.js

Microservices

REST APIs

CI/CD

Kubernetes

Docker

OpenAPI

Tools

Terraform

CloudFormation

Kafka

Docker

ECS/EKS

Job description

Cognizant Technology Solutions Corporation seeks a Lead Java Full Stack Developer to design, build, and scale API-first, cloud-native applications using Java, AWS, React, and AI-assisted technologies. You will collaborate with product, design, data, and risk stakeholders to deliver secure and reliable tech solutions.

Responsibilities include end-to-end development across front and back ends, building scalable AWS-based systems with Docker/Kubernetes, and integrating AI capabilities.