Dmytro Varchuk
Freelance Senior Backend Fullstack Developer at Freelance | Self-Employed
Ukraine
Summary
🤩
Rockstar🎓
Top SchoolDmytro Varchuk is a senior backend and fullstack developer with a decade of professional experience and four years focused on modern JavaScript/TypeScript and Node.js architectures. He combines hands-on backend expertise—microservices, serverless patterns, Kafka/RabbitMQ async integration and database work across MongoDB and SQL—with front-end skills in React and Vue when projects demand full-stack delivery. As a freelance engineer and former team lead, he’s driven architecture, cloud (GCloud) management, payment integrations and L2 support while steering teams toward pragmatic, testable solutions under tight deadlines. An active open-source contributor, Dmytro has enhanced prominent projects like Redoc/Redocly by adding OpenAPI 3.1 support, fixing mobile UX issues and improving CLI tooling—showing a knack for improving developer-facing products. Based in Ukraine, he pairs analytical leadership with a pragmatic delivery focus and a track record of refactoring legacy systems into scalable, well-documented services.
10 years of coding experience
3 years of employment as a software developer
Bachelor's degree Software Engineering, Bachelor's degree Software Engineering at Ternopil Academy of National Economy
Github Skills (17)
apim10
javascript10
api-design10
typescript10
api-documentation10
documentation-generator10
api10
typescript-types10
typescripts10
openapi10
react10
configuration-management9
documentation9
cli9
build-automation8
Programming languages (4)
Github contributions (5)
Redocly/redocly-cli
May 2021 - Jan 2023
⚒️ Redocly CLI makes OpenAPI easy. Lint/validate to any standard, generate beautiful docs, and more.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:77 reviews, 24 commits, 53 PRs in 1 year 8 months
Contributions summary:Dmytro primarily contributed to the Redocly CLI project by implementing new features and making improvements to existing functionality. Their work involved adding support for OpenAPI 3.1, removing unused keywords, returning reference types, and adding linting capabilities for the Redocly configuration file. Additionally, they worked on improving the build-docs command, enhancing configuration options, and moving from jsdelivr to the Redocly CDN. These contributions indicate a focus on enhancing the CLI's core functionality and improving the user experience.
clilinterlintredoccli-toolbox
Redocly/redoc
May 2021 - Oct 2022
📘 OpenAPI/Swagger-generated API Reference Documentation
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:25 releases, 112 reviews, 137 commits in 1 year 5 months
Contributions summary:Dmytro primarily contributed to enhancing the Redoc documentation tool by implementing features to support OpenAPI 3.1 specifications. Their work involved modifying core components, including schema rendering, and handling various data types and constraints within the OpenAPI definition. They also addressed bug fixes, improved mobile view, and added features like the option to display the verb in webhooks. Furthermore, they focused on improving the display and interaction of the generated documentation by fixing scrolling and adding notifications about new versions.
redocopenapi-specificationdocumentation-generatorreactjsswagger-openapi
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.