Java Full Stack Engineer

Tata Consultancy Services; Parsippany-Troy Hills (NJ); On-site; USD 100,000 - 130,000; Full time

Benefits offered by this job

Discretionary Incentive

Medical Coverage

Parental Leaves

401K Plan

Training Reimbursement

Vacation & Holidays

Job summary

Tata Consultancy Services Limited in Parsippany, NJ is hiring an Engineer to build cloud-native applications migrating legacy mainframe functions. You will develop backend microservices in Java with Spring Boot, and frontend UIs in React.js or Angular, replacing green-screen interfaces.

You will design secure REST APIs, integrate with AWS data stores, and support CI/CD pipelines across environments. The role emphasizes collaboration with SMEs, adherence to 12-factor principles, and comprehensive

Qualifications

• 6+ years of hands-on full stack development experience with Java and Spring Boot
• Frontend experience with React.js or Angular to build responsive UIs replacing legacy interfaces
• Strong REST API design and development skills with versioned, well-documented APIs
• Hands-on experience with AWS services used in migrations (EC2, Lambda, API Gateway, RDS/Aurora, etc.)
• Proficiency in SQL and experience with relational and NoSQL databases in cloud-native apps
• Experience with microservices architectures and 12-factor app principles
• Familiarity with Docker containers and deployment via AWS ECS/EKS
• CI/CD experience with Jenkins, GitHub Actions, or AWS CodePipeline
• Unit and integration testing using JUnit, Mockito, Jest or React Testing Library
• Ability to translate legacy mainframe data structures into cloud-native app behavior

Responsibilities

• Build cloud-native replacement apps for mainframe functions from design through deployment
• Develop Java/Spring Boot backend microservices implementing COBOL-equivalent logic
• Create frontend UIs in React.js or Angular replacing legacy screens
• Design and build REST APIs with OpenAPI/Swagger and clear contracts
• Integrate services with AWS managed data stores and messaging (RDS/Aurora, DynamoDB, SQS/SNS, Lambda)
• Collaborate with Data Engineer to validate migrated data against new schema
• Write comprehensive unit and integration tests as part of Definition of Done
• Participate in all sprint ceremonies and provide daily updates
• Perform peer code reviews and maintain coding standards
• Maintain technical documentation including API specs and deployment notes

Skills

Java

Spring Boot

React/Angular

REST APIs

AWS Cloud

SQL/NoSQL

Microservices

Docker

CI/CD

Testing

Tools

Docker

Kubernetes

AWS

Jenkins

GitHub Actions

OpenAPI/Swagger

Job description

Must Have Technical/Functional Skills

• 6+ years of hands-on full stack development experience; strong proficiency in Java with Spring Boot for backend microservices development - this is the primary backend stack for the migration program
• Solid frontend development skills in React.js or Angular - ability to build responsive, accessible web UIs that replace legacy mainframe screens and green-screen interfaces end users currently interact with
• Strong REST API design and development skills - ability to design clean, versioned, well-documented APIs that serve as the interface between the new cloud platform and frontend applications
• Hands-on experience with AWS cloud services used in migration programs - EC2, Lambda, API Gateway, RDS/Aurora, DynamoDB, S3, SQS, SNS, Cognito - and understanding of when to use each
• Proficiency in SQL for relational databases; experience working with both relational (RDS/Aurora, PostgreSQL) and NoSQL (DynamoDB) databases in cloud-native application design
• Experience with microservices architecture patterns - service decomposition, event-driven design, API-first development, and 12-factor application principles for cloud-native workloads
• Familiarity with containerization using Docker and deployment via AWS ECS or EKS (Kubernetes) - understanding of how to package, deploy, and manage services in containers
• Hands-on CI/CD experience - building and maintaining pipelines using Jenkins, GitHub Actions, or AWS CodePipeline for automated build, test, and deployment across environments
• Experience with unit testing and integration testing frameworks - JUnit, Mockito, Jest, or React Testing Library - and commitment to maintaining meaningful test coverage
• Ability to understand legacy mainframe data structures and business logic (with SME guidance) and translate them into equivalent cloud-native application behavior - the core skill of this migration program

Roles & Responsibilities

• Build the cloud-native replacement applications that take over the business functions currently running on the mainframe - this is the core job; each engineer owns specific modules from design through deployment
• Develop backend microservices using Java and Spring Boot that implement business logic equivalent to existing COBOL programs - working closely with SMEs to understand what the legacy code does and ensuring the new service does it correctly
• Build frontend web UIs using React.js or Angular that replace legacy mainframe screens - designing workflows that are intuitive for business users who are transitioning from character-based interfaces
• Design and build REST APIs that expose migrated business functionality - ensure APIs are secure, versioned, documented in OpenAPI/Swagger, and aligned with the integration contracts agreed with other workstream teams
• Integrate new services with AWS managed services - RDS/Aurora for relational data, DynamoDB for high-throughput use cases, SQS/SNS for async messaging, and Lambda for serverless processing
• Work with the Data Engineer to consume migrated data from AWS target stores - understand source data mappings, validate data in the new schema, and ensure application behavior is correct against migrated datasets
• Write comprehensive unit and integration tests for all delivered code - not as an afterthought but as part of the Definition of Done for every story
• Participate actively in all sprint ceremonies - daily stand-up, sprint planning, backlog refinement, and retrospective - with clear daily updates and early escalation of technical blockers
• Conduct and receive peer code reviews - enforce team coding standards, flag design issues, and treat every review as both a quality gate and a learning opportunity
• Maintain technical documentation as a sprint deliverable - API specs, data flow diagrams, deployment notes, and known issues - so the program does not accumulate undocumented knowledge debt

Salary Range-$100,000-$130,000 a year

TCS Employee Benefits Summary

• Discretionary Annual Incentive.
• Comprehensive Medical Coverage: Medical & Health, Dental & Vision, Disability Planning & Insurance, Pet Insurance Plans.
• Family Support: Maternal & Parental Leaves.
• Insurance Options: Auto & Home Insurance, Identity Theft Protection.
• Convenience & Professional Growth: Commuter Benefits & Certification & Training Reimbursement.a
• Time Off: Vacation, Time Off, Sick Leave & Holidays.
• Legal & Financial Assistance: Legal Assistance, 401K Plan, Performance Bonus, College Fund, Student Loan Refinancing.

Location: Parsippany, NJ

Function: TECHNOLOGY

Role: Engineer

ID: 433590

Skills: Java

Salary Range: $100,000 - $130,000