atkachyshyn
Senior Software Engineer
Experienced Senior backend software engineer with a full-stack development background and over 15 years in
the field. My latest interests are blockchain, decentralized technologies, and FinTech solutions. I have a solid
track record across the full software development lifecycle. I am known for my problem-solving skills and
ability to adapt to evolving technical environments. My latest projects include: web3 development platform for
chains, apps, and games; decentralized solutions for the API access, decentralized file management platform
that leverages FileCoin, NFT-powered marketplace platform for web3 games, migration from an EVM compatible blockchain to Polkadot.
the field. My latest interests are blockchain, decentralized technologies, and FinTech solutions. I have a solid
track record across the full software development lifecycle. I am known for my problem-solving skills and
ability to adapt to evolving technical environments. My latest projects include: web3 development platform for
chains, apps, and games; decentralized solutions for the API access, decentralized file management platform
that leverages FileCoin, NFT-powered marketplace platform for web3 games, migration from an EVM compatible blockchain to Polkadot.
Experience: 6 years
Yearly salary: $156,000
Hourly rate: $75
Nationality: 🇺🇦 Ukraine
Residency: 🇺🇸 United States
Experience
Senior Software Engineer
Sequence (former Horizon Blockchain Games) 2025 - 2025
I worked on building and maintaining backend infrastructure for chains, Web3 apps and games using Go, WebRPC, and REST. Managing cloud infrastructure with Docker, Kubernetes, and GCP. Integrating EVM chains, handling event indexing, and metadata management. Ensuring system reliability through CI/CD, observability, and metrics.
Senior Software Engineer
Trady 2025 - 2015
Trady is a fully on-chain, cross-chain DEX that combines the performance of CEXs with the core values of DeFi. Short-term contract. I’m working on the development of a new Trading Terminal, primarily on the backend side.(typescript, Node.js) My responsibilities include cross-team collaboration, refining requirements, and delivering fast-paced MVPs in a high-iteration environment.
Senior Back-End Engineer
Mythical Games 2023 - 2024
As a member of the marketplace and blockchain migration teams, I contributed to the development of a blockchain-integrated marketplace platform designed for seamless integration into third-party games. The platform supported features like bidding, instant selling, and NFT asset exchange using ERC-20 tokens. I collaborated on system architecture, implemented matching logic and pricing mechanisms, and helped ensure reliability through the saga pattern and actor model. As part of the migration effort, I worked with the team to transition the platform from an EVM-compatible blockchain to the Polkadot ecosystem, focusing on data integrity and compatibility with Substrate. I also helped build and maintain services that automated the migration process and published extrinsic's from sources such as games and marketplaces, using Kafka for scalable messaging.
Senior Full-Stack Engineer and Researcher
Vivid Labs 2021 - 2023
Leading the development of a Shopify app that enables individuals unfamiliar with blockchain technology to create and sell NFTs, including ERC-721 and ERC-1155 tokens, supporting multiple media files with advanced copyright protection.
Senior Software Engineer (Protocol)
Waterfall 2020 - 2020
Participated in the development of a pioneering Layer 2 EVM-compatible blockchain, utilizing Directed Acyclic Graph (DAG) technology to significantly enhance transaction speed and capacity beyond the original Ethereum blockchain.
SENIOR SOFTWARE ENGINEER
PWRTEAMS 2011 - 2020
Various teams and projects. Developed medical web applications and international travel company business tools, integrating cutting-edge technology and improving system integrations and operations across multiple projects.
Skills
agile
api
aws
backend
blockchain
blockchain-engineer
bootstrap
c-sharp
cassandra
ci-cd
computer-science
crypto
cryptography
dapp
defi
docker
dot-net
engineer
eos
erc-1155
erc-20
erc-721
ethereum
ethereumjs
evm
fintech
full-stack
gaming
ganache
gcp
git
golang
grafana
graphql
integration
javascript
kubernetes
libp2p
mongo
nextjs
polkadot
postgres
protocol-engineer
python
rabbitmq
react
redis
rust
solidity
terraform
typescript
web3
web3js
english
ukrainian