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I am a Java Back-End Developer with over 4 years of experience designing and developing scalable, high-performance backend systems using Java, Spring Boot, and microservices. I specialize in building RESTful APIs, implementing secure authentication methods like OAuth2 and JWT, and deploying cloud-native applications on AWS with container orchestration using Docker and Kubernetes. I enjoy working in Agile and DevOps-driven environments, optimizing databases for performance, and integrating asynchronous processing and event-driven architectures using technologies like Apache Kafka. My background also includes strong skills in SQL, caching strategies, system monitoring, and cloud infrastructure management, enabling me to build reliable and secure backend solutions for financial and enterprise systems.…I am a Java Back-End Developer with over 4 years of experience designing and developing scalable, high-performance backend systems using Java, Spring Boot, and microservices. I specialize in building RESTful APIs, implementing secure authentication methods like OAuth2 and JWT, and deploying cloud-native applications on AWS with container orchestration using Docker and Kubernetes. I enjoy working in Agile and DevOps-driven environments, optimizing databases for performance, and integrating asynchronous processing and event-driven architectures using technologies like Apache Kafka. My background also includes strong skills in SQL, caching strategies, system monitoring, and cloud infrastructure management, enabling me to build reliable and secure backend solutions for financial and enterprise systems.

Harini Tankari B

Back-End Developer, Developer, Programmer

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I am a Java Back-End Developer with over 4 years of experience designing and developing scalable, high-performance backend systems using Java, Spring Boot, and microservices. I specialize in building RESTful APIs, implementing secure authentication methods like OAuth2 and JWT, and deploying cloud-native applications on AWS with container orchestration using Docker and Kubernetes. I enjoy working in Agile and DevOps-driven environments, optimizing databases for performance, and integrating asynchronous processing and event-driven architectures using technologies like Apache Kafka. My background also includes strong skills in SQL, caching strategies, system monitoring, and cloud infrastructure management, enabling me to build reliable and secure backend solutions for financial and enterprise systems.…I am a Java Back-End Developer with over 4 years of experience designing and developing scalable, high-performance backend systems using Java, Spring Boot, and microservices. I specialize in building RESTful APIs, implementing secure authentication methods like OAuth2 and JWT, and deploying cloud-native applications on AWS with container orchestration using Docker and Kubernetes. I enjoy working in Agile and DevOps-driven environments, optimizing databases for performance, and integrating asynchronous processing and event-driven architectures using technologies like Apache Kafka. My background also includes strong skills in SQL, caching strategies, system monitoring, and cloud infrastructure management, enabling me to build reliable and secure backend solutions for financial and enterprise systems.

Available to hire

I am a Java Back-End Developer with over 4 years of experience designing and developing scalable, high-performance backend systems using Java, Spring Boot, and microservices. I specialize in building RESTful APIs, implementing secure authentication methods like OAuth2 and JWT, and deploying cloud-native applications on AWS with container orchestration using Docker and Kubernetes.

I enjoy working in Agile and DevOps-driven environments, optimizing databases for performance, and integrating asynchronous processing and event-driven architectures using technologies like Apache Kafka. My background also includes strong skills in SQL, caching strategies, system monitoring, and cloud infrastructure management, enabling me to build reliable and secure backend solutions for financial and enterprise systems.

Skills

Experience Level

Expert

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Work Experience

Java Backend Developer at Citigroup

December 1, 2023 - Present

Architected and developed large-scale financial applications using Java and Spring Boot, optimizing concurrent request handling with multi-threading and caching, leading to a 45% reduction in API response times. Designed and deployed an event-driven messaging system using Apache Kafka that enabled real-time transaction handling and reduced message processing latency by 35%. Migrated monolithic services to cloud-native microservices on AWS (EC2, S3, API Gateway, Lambda), improving scalability and reducing infrastructure costs by 30%. Optimized PostgreSQL database performance by implementing indexing, connection pooling, and partitioning, improving query execution times by 50%. Built secure REST APIs with OAuth2, JWT authentication, and role-based access control. Managed containerized services with Kubernetes, implementing self-healing mechanisms and rolling deployments to reduce downtime and accelerate delivery cycles.

Backend Engineer at Kalp Technolab

December 31, 2022 - August 5, 2025

Engineered a high-performance backend system using Java, Spring Boot, and Hibernate, implementing asynchronous task execution and thread pooling to reduce API latency by 40%. Refactored a monolithic application into a microservices architecture using Spring Cloud, Eureka, and Zuul, enabling modular scalability and streamlined deployments. Optimized SQL queries through indexing, query refactoring, and Redis caching, improving database performance by 50% during peak loads. Secured backend systems using Spring Security, OAuth2, and LDAP-based authentication, implementing role-based access control for enterprise-level data protection. Enhanced system monitoring using Prometheus, Grafana, and distributed tracing, reducing incident resolution time by 30% through better observability.