Nick Tolomiczenko is a Senior Software Developer with 14+ years of experience building payment gateways, mobile payment integrations, and backend systems from the ground up. At Moneris he architected and refactored core gateway components, authored Java and .NET client APIs for diverse pin-pad vendors, and led EMVCo-approved 3-D Secure implementations for versions 1 and 2. Equally comfortable in low-level integrations (Tandem/TACL) and modern mobile stacks (Objective-C, Android Java), he repeatedly invents tooling or protocols when off-the-shelf solutions fall short. An active back-end contributor to projects like the HyperDex Java client, he focuses on robust API design and byte-array-friendly optimizations that improve performance and stability. Based in Old Toronto with a B.Sc. in Mathematics from the University of Toronto, he blends analytical rigor with a maker’s drive to ship dependable, production-scale systems.
14 years of coding experience
7 years of employment as a software developer
B.Sc, Mathematics, B.Sc, Mathematics at University of Toronto
HyperDex is a scalable, searchable key-value store
Role in this project:
Back-end Developer
Contributions:140 commits in 10 months
Contributions summary:Nick contributed to the Java client library for the HyperDex key-value store. Their work focused on implementing and refining core API functionalities, specifically the `get()`, `put()`, and `search()` methods, including support for different data types and range searches. They made code modifications in various files to ensure the Java client can handle all the supported datatypes. Additionally, the user refactored the Java API to be Byte Array friendly, improving overall performance and stability.
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Nick Tolomiczenko - Senior Software Developer at Moneris Solutions