Java Spring Microservices

Backend Engineering & API Development

•        Design, develop, and maintain high-performance Java-based RESTful APIs and microservices serving member-facing digital products.

•        Build and evolve core Member Services platform capabilities including account management, card servicing, rewards, benefits inquiry, and transaction history.

•        Develop event-driven architectures using Apache Kafka for real-time member data processing, notifications, and service orchestration.

•        Implement GraphQL APIs to support flexible, efficient data delivery to mobile and web front-end clients.

•        Ensure API contracts are robust, versioned, well-documented, and backward-compatible across consumer teams.

 

Microservices & Cloud-Native Architecture

•        Design loosely coupled, independently deployable microservices following domain-driven design (DDD) principles.

•        Deploy and manage services on cloud platforms (AWS / GCP / Azure) using containerization (Docker) and orchestration (Kubernetes / OpenShift).

•        Implement service mesh patterns, circuit breakers, retries, and rate limiting for resilient inter-service communication.

Responsibilities

Data Engineering & Caching

•        Design and manage data access layers using relational databases (Oracle, PostgreSQL) and NoSQL stores (Cassandra, Redis, MongoDB).

•        Implement distributed caching strategies (Redis, Hazelcast) to minimize latency and reduce downstream system load.

•        Build data pipelines and streaming processors using Kafka Streams or Apache Flink for real-time member event processing.

 

Required Qualifications

•        4-10 years of professional software engineering experience with a strong Java backend focus.

•        Deep expertise in Java (Java 11+, Java 17/21 preferred) and the Spring ecosystem — Spring Boot, Spring Cloud, Spring Security, Spring Data.

•        Proven experience building and operating production microservices at high scale (millions of requests/day).

•        Strong working knowledge of REST API design principles, HTTP semantics, and API versioning strategies.

•        Hands-on experience with Apache Kafka or equivalent event streaming platforms for asynchronous processing.

•        Proficiency with containerization (Docker) and Kubernetes/OpenShift for production service deployment.

•        Solid experience with relational databases (Oracle or PostgreSQL) and at least one NoSQL / in-memory store (Redis, Cassandra, DynamoDB).

Qualifications

Skillset: Java Springboot Microservices (JDK 17+ preferred), RESTful API development hands on experience, Apache Kafka (event streaming), experience working on relational DB: Oracle/Postgress & one NoSQL DB: Cassandra (OR) Redis (OR) DynamoDB

About UsAt Zensar, we’re “experience-led everything”. We are committed to conceptualizing, designing, engineering, marketing, and managing digital solutions and experiences for over 130 leading enterprises. We are a company driven by a bold purpose: Together, we shape experiences for better futures. Whether for our clients, our people, or the world around us, this belief powers everything we do. At the heart of our culture is ONE with Client - a set of four core values that reflect who we are and how we work: One Zensar, Nurturing, Empowering, and Client Focus.
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