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I am a Senior Java Backend Engineer with 15+ years of experience designing and building scalable microservices and enterprise backend platforms using Java and the Spring ecosystem. I specialize in Spring Boot, Kafka, REST APIs, Docker, Kubernetes, CI/CD, and cloud-native development on AWS and Azure. I have delivered high-availability systems and production support for platforms serving 200K+ users, and I enjoy collaborating with distributed teams to create reliable, observable, and secure solutions. I am passionate about AI-powered integrations and have contributed to projects using OpenAI APIs and Claude to enable smarter automation and intelligent workflows.\n\nI am open to remote and relocation opportunities across Europe and thrive in roles that combine hands-on engineering with collaboration with stakeholders and cross-functional teams.…I am a Senior Java Backend Engineer with 15+ years of experience designing and building scalable microservices and enterprise backend platforms using Java and the Spring ecosystem. I specialize in Spring Boot, Kafka, REST APIs, Docker, Kubernetes, CI/CD, and cloud-native development on AWS and Azure. I have delivered high-availability systems and production support for platforms serving 200K+ users, and I enjoy collaborating with distributed teams to create reliable, observable, and secure solutions. I am passionate about AI-powered integrations and have contributed to projects using OpenAI APIs and Claude to enable smarter automation and intelligent workflows.\n\nI am open to remote and relocation opportunities across Europe and thrive in roles that combine hands-on engineering with collaboration with stakeholders and cross-functional teams.

Kasun Wijewardena

Back-End Developer, Web Developer, Full Stack Developer, +1

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I am a Senior Java Backend Engineer with 15+ years of experience designing and building scalable microservices and enterprise backend platforms using Java and the Spring ecosystem. I specialize in Spring Boot, Kafka, REST APIs, Docker, Kubernetes, CI/CD, and cloud-native development on AWS and Azure. I have delivered high-availability systems and production support for platforms serving 200K+ users, and I enjoy collaborating with distributed teams to create reliable, observable, and secure solutions. I am passionate about AI-powered integrations and have contributed to projects using OpenAI APIs and Claude to enable smarter automation and intelligent workflows.\n\nI am open to remote and relocation opportunities across Europe and thrive in roles that combine hands-on engineering with collaboration with stakeholders and cross-functional teams.…I am a Senior Java Backend Engineer with 15+ years of experience designing and building scalable microservices and enterprise backend platforms using Java and the Spring ecosystem. I specialize in Spring Boot, Kafka, REST APIs, Docker, Kubernetes, CI/CD, and cloud-native development on AWS and Azure. I have delivered high-availability systems and production support for platforms serving 200K+ users, and I enjoy collaborating with distributed teams to create reliable, observable, and secure solutions. I am passionate about AI-powered integrations and have contributed to projects using OpenAI APIs and Claude to enable smarter automation and intelligent workflows.\n\nI am open to remote and relocation opportunities across Europe and thrive in roles that combine hands-on engineering with collaboration with stakeholders and cross-functional teams.

Available to hire

I am a Senior Java Backend Engineer with 15+ years of experience designing and building scalable microservices and enterprise backend platforms using Java and the Spring ecosystem. I specialize in Spring Boot, Kafka, REST APIs, Docker, Kubernetes, CI/CD, and cloud-native development on AWS and Azure. I have delivered high-availability systems and production support for platforms serving 200K+ users, and I enjoy collaborating with distributed teams to create reliable, observable, and secure solutions. I am passionate about AI-powered integrations and have contributed to projects using OpenAI APIs and Claude to enable smarter automation and intelligent workflows.\n\nI am open to remote and relocation opportunities across Europe and thrive in roles that combine hands-on engineering with collaboration with stakeholders and cross-functional teams.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Software Engineer / Backend Specialist at BizTech Platforms Inc

January 1, 2016 - Present

Led backend engineering initiatives for a high-availability enterprise platform serving 200K+ users; designed and developed scalable Java microservices using Spring Boot and distributed architecture principles; integrated 20+ third-party enterprise systems and delivered enterprise billing and service enhancements; built and maintained CI/CD pipelines for automated deployments, monitoring, and release management; developed secure RESTful and SOAP-based APIs using Spring Boot and Oracle; applied SSDLC practices including SAST, DAST, and SCA; worked with Docker-based deployment environments and cloud-native development practices on Microsoft Azure; collaborated with US stakeholders and distributed engineering teams in a fully remote environment since 2016

Technology Consultant at Auxenta Inc (1 Billion Tech Inc)

January 1, 2014 - December 31, 2016

Designed and developed scalable REST API frameworks for enterprise system integrations; improved CRM billing platform performance, reliability, and backend processing efficiency; developed a Microsoft Word add-in for automated legal ambiguity detection and document analysis; led backend development of a Bitcoin trading platform supporting both mobile and web apps

Senior Software Engineer at Aeturnum Lanka Pvt Ltd

January 1, 2012 - December 31, 2014

Developed backend APIs and administrative portals for mobile-based enterprise applications; built secure RESTful services using Spring MVC, Hibernate, and Spring Security

Software Engineer at Virtusa Corporation

January 1, 2010 - December 31, 2012

Developed telecom portals and gateway systems for large-scale enterprise communication platforms; contributed to SOA-based enterprise applications supporting international transportation and logistics operations