Darko Kulic
Senior Software Engineer at Toptal
Lausanne, Vaud, Switzerland
Summary
👤
Senior🎓
Top SchoolDarko Kulic is a seasoned Senior Software Engineer based in Lausanne with over a decade of C/C++ expertise and eight years of professional experience building secure, production-grade systems across Linux, Windows, and Android. He has driven backend and cryptographic work in notable open-source projects like Hyperledger Indy—refactoring crypto and wallet services and adding caching for revocation state—demonstrating a strong focus on security and performance. Darko has held senior roles at Evernym and TeleSign, and currently contributes as a freelancer on Toptal while leading engineering efforts at SICPA, blending hands-on development with system design. Colleagues know him as a dependable, team-oriented problem solver who combines creative thinking with analytical rigor to tackle complex transaction and encryption challenges.
8 years of coding experience
16 years of employment as a software developer
University of Belgrade
Github Skills (6)
indy10
wallet10
rust10
sdk10
cryptography10
blockchain8
Programming languages (9)
Github contributions (5)
hyperledger-indy/indy-sdk
Apr 2018 - Jun 2020
indy-sdk
Role in this project:
Back-end Developer
Back-end DeveloperContributions:164 commits, 36 PRs, 43 comments in 2 years 2 months
Contributions summary:Darko primarily focused on implementing and refactoring cryptographic and wallet management features within the Hyperledger Indy SDK, as indicated by changes to the crypto and wallet services. They moved encryption-related functionality to the crypto directory and updated cipher algorithms, demonstrating a focus on security and cryptographic principles. Furthermore, the user made modifications to transaction handling logic, and added functionality for purging and caching credential definition and schema records. They added caching of revocation state also.
ssizkpindy-sdksdkindy
dkulic/indy-sdk
May 2018 - Jun 2020
Contributions:1 PR, 96 pushes, 46 branches in 2 years 1 month
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