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