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Програміст Golang
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- Програміст Golang, Software Engineer, Backend engineer, Розробник Rust, Python-програміст, Fullstack-розробник
- City of residence:
- Kyiv
- Ready to work:
- Remote
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Arsen Kondratiev
A software engineer with 4+ years of expertise in blockchain, blockchain infrastructure and smart contract
development. Specialized in Rust, Polkadot SDK, Cosmos SDK and CosmWasm. Skilled in building robust
blockchain solutions, writing scalable smart contracts, and maintaining infrastructure.
Passionate about decentralization, open-source contribution and well-structured engineering.
Work experience
Personal
Blockchain Developer Jun 2024 - Mar 2025
Name NYMLAB, Milan
Arsen Kondratiev
Developed core modules of a Cosmos SDK‑based blockchain protocol.
Address Implemented and maintained CosmWasm smart contracts.
Ukraine Built E2E testing frameworks for protocol and contract testing.
18018 Cherkassy
Managed and optimized GitHub Actions CI/CD pipelines and Docker environments.
Phone number Wrote unit and multitests for robust smart contract coverage.
[open contact info ](look above in the "contact info" section) Stack: Rust, CosmWasm, Cosmos SDK, Docker, GitHub Actions, Bash
Email
[open contact info ](look above in the "contact info" section) Volunteer Apr 2022 - May 2024
Date of birth self-employed, Ukraine
23-02-1998 Contributed to humanitarian aid distribution and coordination during wartime. Strengthened
Gender problem‑solving, teamwork, and resilience in high‑stress environments.
Male
Blockchain Developer Oct 2021 - Mar 2022
LinkedIn
NYMLAB, Milan
[open contact info ](look above in the "contact info" section)
kondratiev-031801172/ Participated in the development of Vectis smart contract wallet using CosmWasm.
Stack: Rust, CosmWasm
Interests
Blockchain Developer Oct 2021 - Mar 2022
JSGENESIS, Oslo
Hatha-yoga Design and development of video NFTs from concept as part of content pallet.
Swimming Stack: Rust, Typescript
Volunteering
Blockchain Developer Mar 2020 - Oct 2021
JSGENESIS, Oslo
Designed and implemented Substrate runtime modules (pallets) for the Joystream protocol.
Maintained and refactored existing pallets built by other engineers.
Converted Joystream into a parachain‑compatible chain with dual‑mode support.
Wrote runtime benchmarks and generated corresponding weights.
Integrated pallets with TypeScript‑based e2e testing framework.
Wrote CLI commands in Typescript around runtime logic.
Stack: Rust, Substrate, Polkadot SDK, TypeScript basic (E2E testing, CLI tools)
Rust Developer Jun 2019 - Mar 2020
MadFish.Solutions, Kyiv
Developed Rust‑based systems for tracking and analyzing actions on Tron/EOS dApps.
Built and optimized data collectors and CPA (Cost per Action) metrics tools.
Stack: Rust, Tron, EOS, Data Processing
Education and Qualifications
Bachelor of Software Engineering Sep 2015 - Jul 2019
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv
A software engineer with 4+ years of expertise in blockchain, blockchain infrastructure and smart contract
development. Specialized in Rust, Polkadot SDK, Cosmos SDK and CosmWasm. Skilled in building robust
blockchain solutions, writing scalable smart contracts, and maintaining infrastructure.
Passionate about decentralization, open-source contribution and well-structured engineering.
Work experience
Personal
Blockchain Developer Jun 2024 - Mar 2025
Name NYMLAB, Milan
Arsen Kondratiev
Developed core modules of a Cosmos SDK‑based blockchain protocol.
Address Implemented and maintained CosmWasm smart contracts.
Ukraine Built E2E testing frameworks for protocol and contract testing.
18018 Cherkassy
Managed and optimized GitHub Actions CI/CD pipelines and Docker environments.
Phone number Wrote unit and multitests for robust smart contract coverage.
[
[
Date of birth self-employed, Ukraine
23-02-1998 Contributed to humanitarian aid distribution and coordination during wartime. Strengthened
Gender problem‑solving, teamwork, and resilience in high‑stress environments.
Male
Blockchain Developer Oct 2021 - Mar 2022
NYMLAB, Milan
[
kondratiev-031801172/ Participated in the development of Vectis smart contract wallet using CosmWasm.
Stack: Rust, CosmWasm
Interests
Blockchain Developer Oct 2021 - Mar 2022
JSGENESIS, Oslo
Hatha-yoga Design and development of video NFTs from concept as part of content pallet.
Swimming Stack: Rust, Typescript
Volunteering
Blockchain Developer Mar 2020 - Oct 2021
JSGENESIS, Oslo
Designed and implemented Substrate runtime modules (pallets) for the Joystream protocol.
Maintained and refactored existing pallets built by other engineers.
Converted Joystream into a parachain‑compatible chain with dual‑mode support.
Wrote runtime benchmarks and generated corresponding weights.
Integrated pallets with TypeScript‑based e2e testing framework.
Wrote CLI commands in Typescript around runtime logic.
Stack: Rust, Substrate, Polkadot SDK, TypeScript basic (E2E testing, CLI tools)
Rust Developer Jun 2019 - Mar 2020
MadFish.Solutions, Kyiv
Developed Rust‑based systems for tracking and analyzing actions on Tron/EOS dApps.
Built and optimized data collectors and CPA (Cost per Action) metrics tools.
Stack: Rust, Tron, EOS, Data Processing
Education and Qualifications
Bachelor of Software Engineering Sep 2015 - Jul 2019
National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv
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