Biyeun Buczyk
Director Of Engineering, Founding Tech Team at Vault Wax
Rotterdam, South Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolBiyeun Buczyk is a director-level engineering leader with 14 years of hands-on experience building and modernizing web platforms, currently shaping Looplink’s engineering strategy as a founding Director of Engineering from Rotterdam. She spent over a decade at Dimagi driving CommCare HQ’s core UX, reporting, billing and SSO integrations for a globally deployed, offline-first platform used by frontline workers. Comfortable switching between IC work and org-building, she designs scalable architectures, CI/CD and AWS platforms while creating hiring processes and engineering practices for fast-moving teams. Her open-source contributions include backend SSO and OIDC work on CommCareHQ, reflecting both product sensitivity and security-minded integration experience. Biyeun pairs a physics background from MIT with a creative streak—running a record label and audiovisual projects—that surfaces in pragmatic, user-focused design decisions. Colleagues rely on her to translate ambiguous customer needs into clear roadmaps and maintainable codebases under real-world constraints.
14 years of coding experience
12 years of employment as a software developer
SB Physics, SB Physics at Massachusetts Institute of Technology
Github Skills (10)
python10
back-end-development10
django10
saml9
openid-connect9
oid9
openidc9
api8
apidoc8
accounting7
Programming languages (5)
Github contributions (5)
dimagi/commcare-hq
Nov 2011 - Jan 2023
CommCareHQ is the server backend for CommCare, the world's largest platform for designing, managing, and deploying robust, offline-first, mobile applications to frontline workers worldwide
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1415 reviews, 19669 commits, 2034 PRs in 11 years 4 months
Contributions summary:Biyeun contributed to the CommCareHQ backend, primarily working on features related to Single Sign-On (SSO). Their work included adding support for xdsoft's datetimepicker library, improving the modularity of SSO-related views, adding an accounting interface for managing identity providers, and implementing OIDC endpoints. They also fixed bugs and implemented code enhancements to improve the workflow.
deployingreactworldwidefrontlineweb-application
dimagi/commcare-hq-errorpages
Apr 2015 - Mar 2019
Contributions:7 PRs, 4 pushes, 5 branches in 3 years 11 months
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