Madhawa De Silva Gunasekara
Software Engineer at Arratech AB
Sweden
Summary
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Rockstar🎓
Top SchoolMadhawa De Silva Gunasekara is a Java/Scala full-stack software engineer with about 11–12 years building resilient, cloud-native systems and integrations across fintech and enterprise platforms. He has delivered microservices, migration and performance work for companies like Klarna and Crédit Agricole CIB, and contributed to high-throughput messaging and protocol-driven platforms at Pagero, often following TDD and DevOps practices. Comfortable across backend, frontend and DevOps, he’s implemented OAuth2-secured APIs, Kafka/RabbitMQ integrations, graph/ES search and AWS deployments while running on-call and incident response. An active open-source contributor, he has fixed stability, XA transaction and logging issues in well-known middleware like WSO2 Synapse/Carbon Mediation, reflecting a knack for digging into complex integration stacks. Based in Sweden, he pairs pragmatic engineering with mentoring and R&D experience, and often surfaces subtle configuration and reliability fixes that prevent production incidents.
11 years of coding experience
11 years of employment as a software developer
Bachelor of Science (Hons) Computer Science, Bachelor of Science (Hons) Computer Science at University of Colombo School of ComputingG.C.E. Ordinary Level (2004) & G. C. E. Advanced Level - Physical Science Stream (2007), G.C.E. Ordinary Level (2004) & G. C. E. Advanced Level - Physical Science Stream (2007) at Richmond College
English, Sinhala
Stackoverflow
184reputation
189kreached
10answers
1question
Github Skills (32)
back-end-development10
api-design10
wso210
java10
javas10
syn10
commonjs10
api10
commonmark10
apim9
configuration-management9
endpoints9
error-handling9
endpoint9
xpath9
Programming languages (5)
Github contributions (5)
wso2/wso2-synapse
Oct 2016 - Apr 2018
Role in this project:
Back-end Developer
Back-end DeveloperContributions:28 commits, 46 PRs, 23 pushes in 1 year 6 months
Contributions summary:Madhawa primarily focused on enhancing the functionality and stability of the Apache Synapse project. Their contributions include adding setters for header preservation and implementing methods for error handling and stack trace retrieval within the blocking message sender. The user also addressed configuration path issues, fixed XA transaction problems in the local transport, and modified the JSON path evaluation logging level. Additionally, the user reverted a change related to a CAPP deployment issue and addressed clone attribute default behavior.
wso2/carbon-mediation
Jan 2017 - Jun 2018
Role in this project:Back-end Developer
Back-end DeveloperContributions:32 commits, 56 PRs, 39 pushes in 1 year 4 months
Contributions summary:Madhawa primarily focused on fixing configuration paths, variable documentation, and validating inputs within the WSO2 Carbon Mediation project. These changes span multiple components of the project, including cloud gateway, UI, and message processor services. The commits involve modifying Java code, JavaScript, and JSP files related to proxy services, script mediators, and security features. Several commits also address issues with inbound endpoints and tasks.
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