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Dmytro Zahumennov

@dmytrozahumennov

Message

Backend engineer specializing in blockchain infrastructure, integrations, and developer tooling.

Romania

Message

What I'm looking for

I seek backend/blockchain roles where I can build integrations, improve developer tooling, and work on reliable, scalable infrastructure with collaborative teams.

I am a backend engineer focused on blockchain infrastructure, integrations, and developer tooling with over five years of hands-on experience. I build reliable backend services, APIs, and integration tooling that help partners connect to blockchain platforms.

At Chromia / ChromaWay I led testnet development, contributed to mainnet launch efforts, and implemented integrations with 15+ ecosystem partners including major exchanges and tooling providers. My developer tooling, documentation, and examples reduced partner onboarding time by 50%.

I have built production backends from scratch for KYC and hosting platforms, integrated payments and external APIs, and maintained systems in production with attention to performance, reliability, and maintainability. I also develop demo applications and code examples in Python, JavaScript/TypeScript, and Rell to showcase integrations.

I founded and developed a decentralized prediction market with DAO governance on Chromia and contributed to charity projects using FastAPI and PostgreSQL. I bring strong system design, distributed-systems thinking, and cross-team collaboration to every project.

Experience

Work history, roles, and key accomplishments

Current

Founder & Developer

Current

Oddly

Apr 2025 - Present (11 months)

Designed and built a decentralized prediction market with DAO governance on Chromia, implementing smart contracts, voting and reward mechanisms and owning the full development lifecycle with a focus on security and UX.

Smart Contracts Javascript Typescript Security Full Stack

Current

Backend / Blockchain Engineer

Current

Chromia

Dec 2023 - Present (2 years 3 months)

Led development of the Chromia testnet environment and contributed to mainnet launch by building developer tooling, APIs, and integrations that reduced partner onboarding time by 50%. Implemented and supported integrations with 15+ ecosystem partners and resolved production integration issues to improve platform reliability.

fastAPI Javascript Typescript REST APIs PostgreSQL Distributed Systems Developer Tooling Integration Testing Python

Backend Developer

Animal Shelter

Sep 2023 - Dec 2023 (3 months)

Developed backend services for an animal shelter platform using FastAPI and PostgreSQL to connect shelters with adopters and donors, improving adoption and donation workflows.

fastAPI PostgreSQL REST APIs Render Backend Development Data Modeling Deployment API Documentation

Backend Developer

Hosting

Sep 2022 - Dec 2023 (1 year 3 months)

Built two backend systems for a KYC verification platform and hosting service using Python and Flask, designed REST APIs and database schemas, integrated payments and SMS providers, and improved performance and reliability in production.

Python Flask REST APIs PostgreSQL SQL Docker CI CD Integration Performance Optimization

Backend Developer

Aura

Jan 2022 - Sep 2022 (8 months)

Developed Selenium automation scripts and maintained API/source documentation while improving code quality and test coverage across web application projects.

Selenium Python API Documentation Testing Pytest CI CD Automation

Education

Degrees, certifications, and relevant coursework

Odessa Polytechnic State University

Master's degree, Electrical Engineering

2019 - 2022

Completed a Master's degree in Electrical Engineering focused on advanced electrical systems and engineering principles from Sept. 2019 to Dec. 2022.

Odessa College of Computer Technologies

Associate of Electrical Engineering, Electrical Engineering

2011 - 2015

Completed an Associate degree in electrical engineering from Sept. 2011 to June 2015 focused on foundational electrical engineering concepts and applied technologies.