English:
Upper Intermediate
Ukraine
UTC +02:00
Ukraine/Kyiv
Proficient Javascript React.js + Node.js Developer
- Reliable and confident Web Developer focused on providing clients with valuable exceptional communication. - With over 5 years of experience in web development, I have a proven track record of delivering high-quality, scalable, and efficient web applications using React and Nodejs. - Strong Technical Expertise: Possess extensive knowledge and experience in developing RESTful APIs, integrating databases, working with version control systems, and implementing testing frameworks. Skilled in optimizing website performance and ensuring scalability. - Strong Problem Solver - Collaborative Team Player
Want to hire this engineer?
Check if Volodymyr is availableExpertise
Years of commercial development experience
5 years of experience
Core technologies
Other technologies
Project Highlights
Visualiser for Solana Developers
Sep `22 - Mar `23
6 months
NDA
Developed a system in which Solana developers can visualize links between accounts and instructions (Rust, Anchor), and after that generate code. This helps people who write in Rust (Anchor) to design their system from the smart contract relation in it. Easily allows you to show the team how to communicate with a particular smart contract. By the end, the developer will be able to generate a code template that can then be transferred to the development environment.
Responsibilities & achievements
Wrote the backend from scratch alone and participated in the development of the frontend. Implemented generate code feature. Developed authorization with phantom wallet and sessions. Created dashboard UI with movable Accounts and relations between they. Deployed project with terraform, and set up CI/CD. Created user management logic. Wrote unit tests with a total coverage percentage of 80% using JEST, Mocha. Testing Library. Created CRUD functionality for account and instructions. Raw estimations. Tools and Technologies: Nestjs, Typescript, Git Hub Actions, Nextjs, MaterialUI, Treejs, React, Redux, Digital Ocean.
Betting system
Jan `22 - Sep `22
8 months
NDA
Developed the Betting system (MVP). In this system the bets went through the Solana blockchain. This system is a decentralized betting protocol. The mission is to build a frictionless betting ecosystem and empower anyone to Be The House. All bets placed are 100% anonymous and guaranteed by immutable smart contracts built on the blockchain. Work organization/communication: Scrum, Google Meet, Slack, estimation meetings, retrospectives, planning, code review, brainstorms, business updates, knowledge sharing activities, Jira, GitHub.
Responsibilities & achievements
I implemented the logic for receiving data from a sports provider. And implemented the service for getting the rate data like between the blockchain and the frontend. It was a very interesting experience for me, I got acquainted with the principles of smart contracts and in general with communication with Web3. Implemented Java Connector to Sport provider. Getting data from the connector and creating virtual tables from them (SQL). Editing CI/CD (Fix bugs). Request to smart contracts. Testing (UNIT, Integration) Set up AWS infrastructure (ECS, RDS database) Implemented outcomes feature. Created CRUD user managment Tools and Technologies: Nestjs, Express, Java, Typescript, Git Hub Actions, AWS SQS, AWS ECS, AWS RDS.
Affiliate marketing system
Apr `20 - Jan `22
2 years
NDA
Developed a private performance marketing network with bespoke traffic flows and integrations. In this project, I was engaged in transferring functionality from PHP to Nodejs and finalizing new functionality. Fully deployed the entire infrastructure on AWS and was engaged in deployment automation.
Responsibilities & achievements
Implemented Offer, Postback services. Migrated all staff from PHP to Node js Set up CI/CD Circle CI Implementation of a custom library for Express, AWS lambda, SQS dependency injection using tsyringe. Connected backend and frontend. SQL requests optimization. Tools and Technologies: React, Redux, Express, AWS lambda, AWS S3, AWS lightsail, AWS CloudWatch, AWS EC2, AWS SQS, Typescript Work organization/communication: Scrum, Google Meet, Slack, estimation meetings, retrospectives, planning, code review, brainstorms, business updates, knowledge sharing activities, Jira, GitHub.
E-commerce platform
Nov `19 - Apr `20
5 months
NDA
An abstract e-commerce that can be set up within two weeks or a month for a specific toy seller. Three integrations of Stripe, ERP system and supplier system. The main problem of this project was the lack of popularity of the ERP system at the time of development, and the creation of a UI that is easily configurable for a future client.
Responsibilities & achievements
Discovery backend integrations and architecture. Implemented Stripe and supplier integrations. Created an adapter for connecting ERP to the backend of the platform. Implemented Reverce CI/CD (when collection in Strapi changes, it change source code and commit into repository) Created custom theme with tailwind css. Set up CI/CD. Tools and Technologies: React, Nexjs, Next Auth, Strapi, AWS ESC, AWS RDS, Koa, PostgreSQL, Vercel, Git Hub Actions, Typescript.
Zoom like application
May `19 - Nov `19
6 months
NDA
Creation of a service that allows users to record screen and short video messages and share them with colleagues.
Responsibilities & achievements
Implemented feature of screen recording and short videos using a webcam. Automated deployment using CI/CD CircleCI. Implemented video list UI. Tools and Technologies: React, Redux, NestJs, WebRTC, MySQL. Work organization/communication: Scrum, Google Meet, Slack, estimation meetings, retrospectives, planning, code review, brainstorms, business updates, knowledge sharing activities, Jira, GitHub.
Education
Higher education in Computer Science
Agency
10-50
GMT+1
Kyiv /Ukraine,Alicante/Spain,Seattle/United States,Munich/Germany,Krakow/Poland
Core Expertise
Industries
Education & Science, Banking & Finance, Construction & Real estate, Internet & Telecom, Healthcare & Medicine, Branding, design, web development, Telecommunications and Social Network
Want to hire this engineer?
Check if Volodymyr is available