Java Developer - Microservices Architecture

Description :

Experience : 1+ years in backend software development with strong exposure to asynchronous programming models

Job Summary :

We are seeking a highly skilled and experienced Senior Software Engineer with strong expertise in Java, asynchronous programming, Spring Boot, Vert.x, and MongoDB. The ideal candidate will play a key role in building scalable, high-performance backend services for modern enterprise applications. You will be expected to drive design discussions, contribute to architecture, and mentor junior developers.

Key Responsibilities :

- Design and implement asynchronous, non-blocking microservices and APIs using Vert.x and Spring Boot

- Optimize application performance, scalability, and reliability in high-throughput environments

- Model and manage data in MongoDB, ensuring efficient schema design and indexing

- Collaborate with DevOps, frontend, and QA teams to deliver end-to-end solutions

- Perform code reviews, write unit and integration tests, and ensure best practices across the codebase

- Troubleshoot production issues and participate in on-call rotations (if required)

- Mentor and guide junior developers and contribute to internal knowledge-sharing sessions

- Work in Agile/Scrum teams and contribute to sprint planning, estimations, and retrospectives

Required Skills and Experience :

- 1+ years of backend development experience in Java

- Strong expertise in asynchronous programming, event-driven systems, and non-blocking I/O

- Deep understanding of Vert.x, including event bus, workers, and reactive patterns

- Hands-on experience with Spring Boot microservices architecture

- Proficient in MongoDB, aggregation framework, and schema design

- Familiarity with RESTful APIs, OpenAPI/Swagger specifications

- Experience with message brokers like Kafka or RabbitMQ is a plus

- Strong debugging and performance tuning skills

- Solid grasp of software engineering principles (OOP, design patterns, SOLID)

Preferred Qualifications :

- Experience in building SaaS platforms or fintech/banking domain systems

- Knowledge of reactive frameworks like Project Reactor or RxJava

- Familiarity with containerized deployments using Docker and Kubernetes

- Exposure to CI/CD tools (Jenkins, GitLab CI, etc.)