Senior Full Stack Engineer

Job Description :

We are looking for a Senior Full Stack Engineer with strong hands-on experience in Java, Spring Boot, Microservices, modern frontend development, Kubernetes/Docker, and application security. You will be part of a high-performing engineering team building next-generation digital payment, identity, and biometric checkout solutions for a global payments organization. This is an opportunity to work on products involving secure digital credentials, digital identity, biometric authentication, cryptography, and payment technologies at global scale.

What You Will Do :

- Design, develop and maintain scalable backend services using Java, Spring Boot and Microservices.

- Develop responsive web applications using React or Angular.

- Design and develop secure REST APIs and integrate frontend and backend services.

- Containerize applications using Docker and deploy/manage workloads on Kubernetes.

- Work with Helm charts, Kubernetes deployments, configurations and troubleshooting.

- Implement and work with application security mechanisms including JWT, OAuth 2.0, mTLS, PKI/X.509, hashing and digital signatures.

- Design and optimize database queries using Oracle/PostgreSQL.

- Write clean, maintainable, testable and production-ready code.

- Develop unit, integration, system and performance tests.

- Participate in architecture/design discussions and technical PoCs.

- Troubleshoot complex application and production issues.

- Participate in code reviews and engineering best-practice improvements.

- Collaborate with product managers, engineers and global technology teams.

- Mentor junior engineers and contribute to technical decision-making.

- Work in an Agile/Scrum environment.

Must-Have Skills :

Candidates should have strong hands-on experience in :

- Java + Spring Boot + Microservices

- React or Angular

- Docker + Kubernetes

- Helm / Kubernetes deployment

- REST API development

- JWT / OAuth 2.0

- mTLS / PKI / X.509

- PostgreSQL or Oracle + SQL optimization

- Unit and integration testing

- Production troubleshooting and problem solving

Required Experience :

- 6 - 10 years of relevant software engineering experience.

- Strong hands-on development experience with Java and Spring Boot.

- Proven experience designing/developing microservices.

- Strong experience with React or Angular.

- Practical experience with Docker and Kubernetes.

- Good understanding of Helm charts and Kubernetes deployments.

- Practical understanding of JWT, OAuth 2.0, mTLS, PKI/X.509 and cryptographic concepts.

- Experience developing secure REST APIs.

- Strong SQL/database fundamentals with Oracle or PostgreSQL.

- Good understanding of software testing methodologies.

- Strong communication and problem-solving skills.

- Ability to work independently and take ownership of technical problems.

Good to Have :

- AWS / Azure / GCP

- Jenkins / CI-CD

- PCF

- Performance engineering

- Payment or FinTech domain experience

- Digital identity / authentication experience

- Cryptography/security engineering experience

- Biometric authentication

- Open-source contributions

Skills

Full Stack, Java, Spring Boot, Microservices Architecture, REST API, AngularJS, React.js, PostgreSQL