Sergey Tolmachev
Research Scientist
Tbilisi, Georgia
Summary
🤩
RockstarSergey Tolmachev is a research scientist and full-stack engineer based in Tbilisi with 12 years of experience building backend systems, DevOps pipelines, and AI-enabled tooling. He contributes to notable open-source blockchain projects like Ergo and Scorex—adding protocol-level block header changes, serialization logic, and robust build/deployment automation including Sonatype Nexus publishing and git-driven versioning. Sergey also built core components for the Lux AI Challenge Kotlin kit, blending game-engine thinking with practical debugging and tooling improvements. Comfortable across JVM ecosystems and distributed systems, he repeatedly bridges research ideas and production-ready implementations. Colleagues appreciate his pragmatism in tightening tests and dependency management while preserving protocol correctness. A detail-oriented developer, he often surfaces non-obvious infrastructure improvements (e.g., automated artifact publishing and precise versioning) that reduce release friction.
12 years of coding experience
Russian, English, French, scala
Stackoverflow
666reputation
40kreached
10answers
31questions
Github Skills (26)
kotlin10
dependency-management10
programming-language10
data-serialization10
data-structure10
serialization10
scala10
build-automation10
blockchain10
maven10
data-structures10
testing9
cryptography9
ai9
cryptocurrency9
Programming languages (24)
Github contributions (5)
hyperledger-labs/Scorex
Jul 2017 - Jan 2018
Scorex 2.0 Core
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:66 commits, 14 PRs, 58 pushes in 5 months
Contributions summary:Sergey primarily focused on configuring the build and deployment process, including publishing artifacts to a Maven repository using Sonatype Nexus. They updated project dependencies, particularly in `lock.sbt` and `build.sbt`, and fixed issues related to Swagger versioning. The user also made code changes related to the project settings and configuration. Additionally, they implemented git versioning to the project.
scalablockchaincryptocurrencyscorex
ergoplatform/ergo
Jul 2017 - Jan 2018
Ergo protocol description & reference client implementation
Role in this project:Backend Developer
Backend DeveloperContributions:1 release, 246 commits, 19 PRs in 6 months
Contributions summary:Sergey's primary contribution appears to be the addition and modification of fields related to the block header and block structure within the Ergo protocol. The code changes involve modifications to data structures such as `Header` and `ErgoFullBlock` and the implementation of serialization and deserialization logic. Furthermore, the user made changes to tests, demonstrating involvement in ensuring code correctness and functionality. These modifications seem to be related to adding new information to the block and related data structures.
protocolreference-clientblockchainergo
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