Hangga Sayekti
Technical Code Reviewer at BugBase
Greater Yogyakarta Indonesia
Summary
👤
Senior🎓
Top SchoolHangga Sayekti is an application security engineer and technical code reviewer with 10 years of software engineering experience, specializing in API security, authorization models, and real-world exploitability of web and mobile systems. He blends offensive security expertise—IDOR, broken access control, business logic flaws, MFA and geo-bypass issues—with a strong software engineering background, enabling practical, code-level remediation and secure design collaboration. As a contributor to well-known Java tutorial work (eugenp/tutorials) and author for outlets like Baeldung, CircleCI, and It’s FOSS, he translates complex security concepts into developer-focused guidance and verified code samples. He has led product and engineering teams, built mobile SDKs and CI/CD automation, and actively participates in bug bounty programs and pentesting engagements. Based in Yogyakarta, Indonesia, Hangga is particularly focused on integrating security into the SDLC at scale and producing proof-of-concept exploit validations to drive prioritized fixes.
10 years of coding experience
16 years of employment as a software developer
S1/Bachelor, Mathematics, S1/Bachelor, Mathematics at Universitas Negeri Yogyakarta
Indonesian, English, javanese, arabic (listening)
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (6)
unit-testing10
javas10
completablefuture10
junit10
java10
testing9
Programming languages (6)
Github contributions (5)
eugenp/tutorials
Mar 2022 - Aug 2024
Getting Started with Spring Boot 3:
Role in this project:
Back-end Developer & QA Engineer/Test Automation Engineer
Back-end Developer & QA Engineer/Test Automation EngineerContributions:1 review, 26 PRs, 6 comments in 2 years 5 months
Contributions summary:Hangga primarily contributed to the `core-java-modules` within the `eugenp/tutorials` repository, focusing on Java-related topics. They implemented and updated unit tests for various Java IO APIs, including file input/output, and explored CompletableFuture functionalities, creating and modifying tests related to timeouts. Their work included code refactoring, addition of methods, and the use of try-with-resources to optimize code.
spring-bootspring-security-oauthsecurityauthenticationsecurity-oauth
hangga/hangga
Jul 2018 - Mar 2022
Contributions:34 pushes, 1 branch in 3 years 8 months
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