Supun Withana
Software Engineer at Embla Software Innovation (pvt) Ltd
Colombo, Western Province, Sri Lanka
Summary
👤
Senior🎓
Top SchoolSupun Withana is a software engineer with eight years of experience building full-stack and identity-focused systems, currently working at Embla on Angular 12 and Nest.js applications for the property rental and channel management domain. He brings deep practical knowledge of IAM standards—OAuth2 and OIDC—from his time at WSO2, where he contributed backend fixes and database schema changes to the widely used WSO2 Identity Server. Comfortable across frontend, backend, and databases, he has hands-on experience with Go and GCP functions, PostgreSQL/Sequelize, and CI/CD practices. His open-source contributions include refactoring device authentication flows and enforcing uniqueness constraints in OAuth2 device flow tables, reflecting an attention to security, maintainability, and data integrity. Based in Colombo, he combines product-focused integration experience with a knack for cross-stack troubleshooting and incremental, standards-driven improvements.
8 years of coding experience
2 years of employment as a software developer
Bachelor's degree, Computer Engineering, Bachelor's degree, Computer Engineering at University of PeradeniyaAdvanced Level, Combined Mathematics, Advanced Level, Combined Mathematics at Richmond College,Galle
Stackoverflow
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0reached
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Github Skills (18)
postgresql10
oracles10
mysql10
identity10
schema-design10
db210
java10
javas10
oracle10
sql10
database-design10
db-schema10
mssql10
database-schema10
schema10
Programming languages (6)
Github contributions (5)
wso2-extensions/identity-inbound-auth-oauth
Mar 2021 - Jul 2021
Role in this project:
Backend Developer
Backend DeveloperContributions:21 reviews, 26 commits, 3 PRs in 3 months
Contributions summary:Supun primarily refactored and modified code related to device authentication and OAuth2 device flow implementation within the WSO2 Identity Server extensions. Their work involved changing variable names, refactoring code snippets across multiple Java files, and removing configurations specific to certain bugs. The user also added new configurable values and made the `user_code` unique within the system. Additionally, they modified deprecated methods and fixed comments, contributing to improved code maintainability.
identity
wso2/carbon-identity-framework
Mar 2021 - Jun 2021
Role in this project:Database Engineer / Database Administrator
Database Engineer / Database AdministratorContributions:5 commits, 1 PR in 2 months
Contributions summary:Supun's primary contributions focused on modifying database schemas and SQL scripts across multiple database platforms. These changes involved altering existing tables, adding new columns, and introducing unique constraints to the `IDN_OAUTH2_DEVICE_FLOW` table. The user implemented these changes to ensure data integrity and consistency across various database systems supported by the WSO2 Identity Server framework. The code modifications demonstrate expertise in database design and SQL scripting for different database flavors.
identity
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