Melan Jayasinghage
Backend Engineer at Rakuten
Tokyo, Japan
Summary
👤
Senior🎓
Top SchoolMelan Jayasinghage is a backend engineer with 12+ years of hands-on experience building high-performance, reliable distributed systems—primarily in the Java ecosystem—now modernizing applications at Rakuten using Spring Boot, Kubernetes and ELK. He excels at designing service-oriented architectures that account for real-world constraints like scale, latency and failure modes, and prefers durable engineering over quick fixes. His background includes technical leadership and consultancy roles across healthcare, security services and platform R&D, giving him a pragmatic blend of system design and delivery experience. An avid tinkerer and open-source contributor, Melan enjoys digging into low-level and cross-platform development to understand how things work under the hood. Based in Tokyo, he brings a measured, security-minded approach to modernization and API-first backend development.
13 years of coding experience
12 years of employment as a software developer
Mathematics, Mathematics at St. Servatias' CollegePostgraduate Diploma in Computer Science, Postgraduate Diploma in Computer Science at University of Colombo
Stackoverflow
458reputation
5kreached
8answers
2questions
Github Skills (37)
java9
accumulo9
apache8
wso28
big-data8
network-server8
spring-boot7
bgp6
generics6
xpath6
paas6
subnet6
css-selectors6
python6
selenium-webdriver6
Programming languages (5)
Github contributions (5)
melanj/struts2-spring-boot2-integration
Apr 2020 - Apr 2022
struts2.5.x spring-boot2 integration
Contributions:28 commits, 5 PRs, 31 pushes in 2 years
spring-boot
melanj/melanj
Jul 2021 - Feb 2026
Contributions:13 pushes, 1 branch in 4 years 8 months
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