Sachini Siriwardene
Software Developer III at Regions Bank
Lake Forest, California, United States
Summary
👤
Senior🎓
Top SchoolSachini Siriwardene is a Software Developer III with a decade of engineering experience and 7+ years focused on building secure, scalable backend systems for identity and API management. She has driven identity, consent, and Open Banking features at WSO2—implementing Dynamic Client Registration, private key JWT via JWKS, and PS256 support for JWTs—before joining Regions Bank to design financial‑grade authentication and authorization flows. Comfortable across Java and Node.js ecosystems, she has delivered multi‑tenant cloud developer portals and microservices, and improved API management workflows used in enterprise and banking contexts. An active contributor to WSO2’s flagship repos, she pairs hands‑on coding with customer-facing problem solving and documentation, a combination that speeds adoption of complex security features. Based in Lake Forest, CA, Sachini blends backend depth with practical deployment experience on AWS and internal CI platforms.
9 years of coding experience
7 years of employment as a software developer
Bachelor’s Degree Information Technology, Bachelor’s Degree Information Technology at University of MoratuwaMusaeus College
English, Sinhalese
Stackoverflow
11reputation
270reached
0answers
1question
Github Skills (12)
javas10
api-management10
api10
back-end-development10
apidoc10
oauth10
java10
identity10
jwt10
json8
plsql6
oracle6
Programming languages (7)
Github contributions (5)
wso2-extensions/identity-inbound-auth-oauth
Nov 2019 - Aug 2022
Role in this project:
Back-end Developer
Back-end DeveloperContributions:76 reviews, 21 commits, 17 PRs in 2 years 9 months
Contributions summary:Sachini primarily worked on enhancing the refresh token validity period and integrating support for PS256 signing. They modified the `ResponseTypeHandlerUtil`, `RefreshGrantHandler`, and `JWTTokenIssuer` classes to allow setting the refresh token validity period from the message context and to incorporate the PS256 algorithm for JWT tokens. Additional changes involved adding debugging logs, refactoring code, and addressing merge conflicts.
identity
wso2/carbon-apimgt
Mar 2021 - Aug 2021
Role in this project:Back-end Developer
Back-end DeveloperContributions:7 commits, 3 PRs in 4 months
Contributions summary:Sachini contributed to the WSO2 API Manager repository by implementing changes to the back-end logic. Their work included modifying code to handle content type headers, address issues related to multiple API subscription endpoints, and refactoring code to align with application registration processes. They also added support for the PS256 algorithm when validating JWT token signatures and improved API update functionality, including modifications to subscription workflows and API visibility.
api-management
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