Mastek

Full Stack Java Developer

We are seeking a highly skilled Full Stack Java Developer to design, develop, and maintain scalable, cloud-native applications. The ideal candidate has strong backend expertise in Java 21 and Spring Boot, combined with modern frontend development using React 18 / Next.js 14, and hands-on experience with AWS cloud services and containerized deployments.

You will work across the full technology stack, contributing to architecture, development, performance optimization, and DevOps practices in a microservices-based environment.

Technical Stack

Backend

• Java 21
• Spring Boot
• RESTful APIs with OpenAPI specification
• Microservices architecture

Frontend

• React 18
• Next.js 14
• Modern JavaScript/TypeScript
• Responsive UI development

Databases

• PostgreSQL
• Amazon RDS (PostgreSQL / MySQL)
• DynamoDB

Cloud & Infrastructure

• AWS (S3, SQS, Lambda, RDS, DynamoDB)
• Amazon ElastiCache (Redis)
• Kubernetes
• Docker

Security & Identity

• Redhat SSO (Authentication / SSO Integration)

Key Responsibilities

• Design and develop scalable backend services using Java 21 and Spring Boot
• Build responsive and performant frontend applications using React 18 / Next.js 14
• Develop and maintain REST APIs with proper OpenAPI documentation
• Implement microservices and event-driven architecture using Amazon SQS
• Work with relational databases (PostgreSQL, RDS) and NoSQL databases (DynamoDB)
• Implement caching strategies using Amazon ElastiCache (Redis)
• Integrate authentication and authorization using Redhat SSO
• Deploy and manage containerized applications using Docker and Kubernetes
• Develop serverless components using AWS Lambda
• Implement CI/CD pipelines and cloud-native best practices
• Optimize application performance, scalability, and security
• Participate in code reviews and architectural discussions

Required Qualifications

• 5+ years of experience in full stack development
• Strong hands-on experience with Java 17+ (preferably Java 21)
• Deep expertise in Spring Boot
• Solid experience with React 18 and/or Next.js 14
• Strong knowledge of REST API design and OpenAPI
• Experience with PostgreSQL and database performance tuning
• Hands-on AWS experience (S3, SQS, RDS, DynamoDB, Lambda)
• Experience with containerization (Docker) and orchestration (Kubernetes)
• Understanding of authentication and SSO concepts
• Familiarity with CI/CD pipelines and DevOps practices
• Strong problem-solving and communication skills

Why Join Us?

• We’re a purpose‑driven organisation committed to creating positive impact and championing inclusion.
• You’ll join a culture that encourages innovation, collaboration, and continuous growth.
• We celebrate difference and believe diverse perspectives lead to stronger solutions.
• Even if you don’t meet every requirement, we encourage you to apply — great talent comes from a variety of backgrounds.
• Your lived experience, unique strengths, and personal story matter — they help us design better outcomes for the communities we serve.
• We celebrate diversity of experience, knowledge, backgrounds, and perspectives, and believe these differences enable us to create meaningful impact. We are proud to be an equal opportunity employer and are committed to fairness and inclusion for all, regardless of sex, race, religion or belief, ethnic or national origin, disability, age, citizenship, marital or partnership status, sexual orientation, gender identity, pregnancy or related conditions, or any other protected characteristic. If you require any reasonable adjustments or additional support during the recruitment process, please let us know.

Ready to Make an Impact?

• ???? Apply now and help us build a more inclusive, digitally empowered future.