Senior Java Microservices Engineer with (Spring Boot | Spring Security | System Design|Reactive pro

About Company,

Droisys is an innovation technology company focused on helping companies accelerate their digital initiatives from strategy and planning through execution. We leverage deep technical expertise, Agile methodologies, and data-driven intelligence to modernize systems of engagement and simplify human/tech interaction. Amazing things happen when we work in environments where everyone feels a true sense of belonging and when candidates have the requisite skills and opportunities to succeed. At Droisys, we invest in our talent and support career growth, and we are always on the lookout for amazing talent who can contribute to our growth by delivering top results for our clients. Join us to challenge yourself and accomplish work that matters.

Senior Java Microservices Engineer with (Spring Boot | Spring Security | System Design|Reactive programming) Fulltime Remote in India(100%)

About the Role: We are looking for a

Senior Java Microservices Engineer

with deep expertise in

Java 17, Spring Boot, Spring Security , and

reactive programming . In this role, you will architect, design, and develop high-performance, scalable, and secure microservices from scratch using modern engineering practices. You will work on event-driven systems, implement best-in-class security patterns, and build distributed services deployed across

AWS and Azure . This is a high-impact position where you’ll influence architectural decisions, mentor fellow engineers, and shape next-generation backend solutions for large-scale distributed platforms.

⚙️ Key Responsibilities: Microservices Development • Design, develop, and maintain reactive microservices using

Java 17, Spring Boot, Spring WebFlux , and related frameworks. • Build microservices

from scratch , ensuring clean architecture, modularity, and maintainability. • Implement

Spring Security

to build robust authentication, authorization, OAuth2, and JWT-based security layers. Event-Driven Architecture • Develop distributed, real-time systems using

Apache Kafka

and

Azure Event Hub . • Implement producers, consumers, stream processing, and fault-tolerant event pipelines. Cloud & DevOps Collaboration • Collaborate with DevOps teams for deployment, scaling, monitoring, and automation across

AWS and Azure . • Implement cloud-native design patterns and integrate services with AWS/Azure ecosystem (EC2, S3, Lambda, SNS/SQS, Event Hub). API & System Performance • Build secure, performant

REST APIs

using asynchronous and non-blocking I/O. • Ensure system reliability using observability and monitoring best practices (metrics, tracing, logging). Technical Leadership • Conduct code reviews and enforce engineering standards. • Mentor junior engineers and champion best practices in coding, design, and testing. Architecture & System Design • Design and evaluate architecture for distributed systems, focusing on performance, scalability, and fault tolerance. • Optimize system data flow, caching strategies, partitioning, load balancing, and recovery mechanisms.

Must-Have Skills: Core Technical Expertise • 6+ years of hands-on experience with

Java

and the

Spring ecosystem

(Boot, Security, Web, Data). • Strong expertise with

Java 17 , Spring Boot,

Spring WebFlux , and

Project Reactor . • Strong experience with

Spring Security , OAuth2, JWT, RBAC, API security patterns. • Event-driven systems:

Kafka

(Producers, Consumers, Streams) or

Azure Event Hub . • Deep knowledge of REST API architecture (async, non-blocking). • Practical experience with

AWS or Azure

cloud services. • Hands-on with

Docker , microservices deployment, and awareness of Kubernetes. • Microservices testing including

contract testing , mocking, Testcontainers. • CI/CD using

GitHub Actions , Jenkins, or similar. • Observability tools – Grafana, Prometheus, ELK, Datadog. Architecture & System Design • Strong foundation in distributed systems: load balancing, caching, partitioning, high availability. • Experience designing systems from

scratch , following domain-driven design (DDD), clean architecture, and best practice patterns. • Expertise in secure API design, performance optimization, data consistency, and resilience engineering. Droisys is an equal opportunity employer. We do not discriminate based on race, religion, color, national origin, gender, gender expression, sexual orientation, age, marital status, veteran status, disability status or any other characteristic protected by law. Droisys believes in diversity, inclusion, and belonging, and we are committed to fostering a diverse work environment.