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Programming & Development Apps & Mobile

Java, Spring Boot, REST APIs

$8/hr Starting at $25

I am a Senior Backend Java Developer with 16+ years of hands-on experience architecting and delivering high-performance, scalable enterprise systems. I specialize in Spring Boot microservices, RESTful API development, and database optimization - consistently delivering bug-free, production-ready code on time. 


I have successfully built and maintained backend systems across Banking & Finance, eCommerce, Purchase & Procurement, and Legal domains - giving me a deep understanding of business-critical requirements and compliance-sensitive environments. If you need a reliable, senior-level Java developer who treats your project like a long-term investment - not just a task - I am the right partner. 


What I Deliver:

Spring Boot Microservices : scalable, maintainable service architecture 

RESTful API Development : secure, well-documented, production-grade 

APIs Database Design & Optimization : PostgreSQL, MySQL, JPA, Hibernate, JooQ 

Legacy System Modernization : migrate monoliths to modern microservices 

CI/CD Pipeline Setup : GitLab, Docker, automated testing & deployment 

Backend Integration : third-party APIs, payment gateways, middleware 

Performance Optimization : query tuning, bottleneck resolution 

Code Review & Refactoring : clean code, SOLID principles 


Technical Skills:

Backend & Frameworks : Java (16+ years), Spring Boot (6+ years), Spring MVC (5 years), Struts (3 years), Swing (3 years) 

API & Security : RESTful API Design, JWT, Keycloak, Swagger / OpenAPI, Postman 

Databases : PostgreSQL (5+ years), MySQL (3 years), JPA / Hibernate (3 years), JooQ (1+ year) 

DevOps & CI/CD : Docker (2+ years), GitLab CI/CD (2 years), Git (6+ years), Linux / Ubuntu (3 years) 

Testing & Quality : JUnit (5+ years), TDD, Test Containers, Integration & Unit Testing, Postman Test, Selenium, Playwright 

Reporting & Tools : Jasper Reports (3 years), Maven / Gradle (6+ years), Jira (5+ years), Eclipse, NetBeans, JSoup, PDFBox 

Frontend Support : Thymeleaf, ZK Framework, Responsive Web Applications 

Domain Experience : Banking & Finance, eCommerce, Purchase & Procurement, Legal. 


16+ years of proven, real-world enterprise experience Bug-free delivery through rigorous TDD and quality assurance On-time, milestone-driven project execution Clear, responsive, and professional communication Full project lifecycle coverage - from requirements to post-delivery support Enterprise-grade, clean, and maintainable code every time.

About

$8/hr Ongoing

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I am a Senior Backend Java Developer with 16+ years of hands-on experience architecting and delivering high-performance, scalable enterprise systems. I specialize in Spring Boot microservices, RESTful API development, and database optimization - consistently delivering bug-free, production-ready code on time. 


I have successfully built and maintained backend systems across Banking & Finance, eCommerce, Purchase & Procurement, and Legal domains - giving me a deep understanding of business-critical requirements and compliance-sensitive environments. If you need a reliable, senior-level Java developer who treats your project like a long-term investment - not just a task - I am the right partner. 


What I Deliver:

Spring Boot Microservices : scalable, maintainable service architecture 

RESTful API Development : secure, well-documented, production-grade 

APIs Database Design & Optimization : PostgreSQL, MySQL, JPA, Hibernate, JooQ 

Legacy System Modernization : migrate monoliths to modern microservices 

CI/CD Pipeline Setup : GitLab, Docker, automated testing & deployment 

Backend Integration : third-party APIs, payment gateways, middleware 

Performance Optimization : query tuning, bottleneck resolution 

Code Review & Refactoring : clean code, SOLID principles 


Technical Skills:

Backend & Frameworks : Java (16+ years), Spring Boot (6+ years), Spring MVC (5 years), Struts (3 years), Swing (3 years) 

API & Security : RESTful API Design, JWT, Keycloak, Swagger / OpenAPI, Postman 

Databases : PostgreSQL (5+ years), MySQL (3 years), JPA / Hibernate (3 years), JooQ (1+ year) 

DevOps & CI/CD : Docker (2+ years), GitLab CI/CD (2 years), Git (6+ years), Linux / Ubuntu (3 years) 

Testing & Quality : JUnit (5+ years), TDD, Test Containers, Integration & Unit Testing, Postman Test, Selenium, Playwright 

Reporting & Tools : Jasper Reports (3 years), Maven / Gradle (6+ years), Jira (5+ years), Eclipse, NetBeans, JSoup, PDFBox 

Frontend Support : Thymeleaf, ZK Framework, Responsive Web Applications 

Domain Experience : Banking & Finance, eCommerce, Purchase & Procurement, Legal. 


16+ years of proven, real-world enterprise experience Bug-free delivery through rigorous TDD and quality assurance On-time, milestone-driven project execution Clear, responsive, and professional communication Full project lifecycle coverage - from requirements to post-delivery support Enterprise-grade, clean, and maintainable code every time.

Skills & Expertise

JavaMySQLPostgreSQLProgrammingSoftware Development

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