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Experienced Java full-stack developer specializing in healthcare technology and SaaS platforms, with a focus on architecting secure, scalable microservices using Java/Spring Boot, REST APIs, and AWS. Proven end-to-end ownership of features across design, development, deployment, and long-term support in privacy-sensitive environments. Strong background in database design and performance optimization (SQL Server, PostgreSQL), CI/CD automation with Docker, Jenkins, and Kubernetes, and delivering reliable production systems through testing (TDD with JUnit/Mockito), code reviews, and incident troubleshooting.…Experienced Java full-stack developer specializing in healthcare technology and SaaS platforms, with a focus on architecting secure, scalable microservices using Java/Spring Boot, REST APIs, and AWS. Proven end-to-end ownership of features across design, development, deployment, and long-term support in privacy-sensitive environments. Strong background in database design and performance optimization (SQL Server, PostgreSQL), CI/CD automation with Docker, Jenkins, and Kubernetes, and delivering reliable production systems through testing (TDD with JUnit/Mockito), code reviews, and incident troubleshooting.

Gayath Chaminada

Full Stack Developer, Back-End Developer, Web Developer, +2

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Experienced Java full-stack developer specializing in healthcare technology and SaaS platforms, with a focus on architecting secure, scalable microservices using Java/Spring Boot, REST APIs, and AWS. Proven end-to-end ownership of features across design, development, deployment, and long-term support in privacy-sensitive environments. Strong background in database design and performance optimization (SQL Server, PostgreSQL), CI/CD automation with Docker, Jenkins, and Kubernetes, and delivering reliable production systems through testing (TDD with JUnit/Mockito), code reviews, and incident troubleshooting.…Experienced Java full-stack developer specializing in healthcare technology and SaaS platforms, with a focus on architecting secure, scalable microservices using Java/Spring Boot, REST APIs, and AWS. Proven end-to-end ownership of features across design, development, deployment, and long-term support in privacy-sensitive environments. Strong background in database design and performance optimization (SQL Server, PostgreSQL), CI/CD automation with Docker, Jenkins, and Kubernetes, and delivering reliable production systems through testing (TDD with JUnit/Mockito), code reviews, and incident troubleshooting.

Available to hire

Experienced Java full-stack developer specializing in healthcare technology and SaaS platforms, with a focus on architecting secure, scalable microservices using Java/Spring Boot, REST APIs, and AWS. Proven end-to-end ownership of features across design, development, deployment, and long-term support in privacy-sensitive environments.

Strong background in database design and performance optimization (SQL Server, PostgreSQL), CI/CD automation with Docker, Jenkins, and Kubernetes, and delivering reliable production systems through testing (TDD with JUnit/Mockito), code reviews, and incident troubleshooting.

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Experience Level

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Intermediate

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Work Experience

Software Engineer at Crede Technologies

March 1, 2024 - Present

Own design, development, and maintenance of scalable healthcare SaaS applications using Java 17, Spring Boot, REST microservices, ReactJS, Tailwind CSS, AWS, Docker, and Kubernetes. Architect REST APIs and backend services following SOLID, design patterns, and secure coding best practices, improving scalability by 40% while supporting HL7/FHIR interoperability. Design and optimize SQL Server/PostgreSQL schemas and queries, reducing API response times by 45%. Lead SDLC from requirements through testing, deployment, production support, and documentation. Build and maintain CI/CD pipelines using Jenkins, Docker, Kubernetes, and AWS, reducing deployment time by 60% and improving reliability by 35%. Apply TDD with JUnit/Mockito to improve test coverage and reduce production defects by 30%. Perform code reviews, mentor developers, and troubleshoot complex incidents across application, infrastructure, and database layers.

Associate Technical Lead at VitalHub Innovations Lab

September 1, 2020 - January 31, 2023

Led design and implementation of scalable Java Spring Boot microservices, REST APIs, and healthcare integrations using HL7/FHIR, improving scalability by 40% across three national healthcare providers. Owned backend architecture and integrations, translating requirements into production-ready, long-term maintainable solutions. Implemented CI/CD pipelines using Jenkins, Docker, Kubernetes, Git, and AWS, reducing deployment time by 60% and improving release reliability by 35%. Optimized SQL Server databases through schema redesign, query tuning, and indexing, reducing report generation time from 15 minutes to 90 seconds. Led code reviews and mentored teams, promoting secure coding, Agile methodologies, and software architecture best practices, raising team productivity by 25%.

Senior Software Engineer / Software Engineer at VitalHub Innovations Lab

May 1, 2013 - August 31, 2020

Designed and developed scalable Java/Spring Boot backend services and distributed microservices supporting 1,000+ concurrent users, improving scalability and fault tolerance. Built RESTful APIs and optimized SQL Server performance, reducing critical report generation time from 15 minutes to 90 seconds via indexing and query optimization. Automated application delivery with Jenkins, Docker, Kubernetes, and AWS containerization, reducing infrastructure costs by 30%, increasing deployment frequency by 40%, and reducing release failures by 35%. Performed production troubleshooting across application, infrastructure, and database layers to improve stability and resilience. Led Agile ceremonies, design discussions, peer code reviews, and mentoring, improving engineering productivity by 25%. Developed unit and integration tests using JUnit/Mockito to support test-driven development. Implemented secure, maintainable enterprise applications using SOLID principles and microservices best practice

Associate Software Engineer at Aeturnum Lanka

April 1, 2009 - April 30, 2013

Developed and tested scalable software modules from user requirements, ensuring adherence to coding standards and object-oriented programming while optimizing performance in an Agile environment. Participated in R&D proof-of-concepts (POCs) to evaluate and adopt emerging technologies. Assisted in troubleshooting and resolving complex technical issues to minimize impact on project timelines. Resolved complex software defects through systematic diagnosis and collaborative solutions. Participated in peer code reviews, providing insights to improve code quality and alignment with best practices. Partnered with product managers to analyze user stories and define technical requirements for feature development.