Dmytro

Dmytro Kosianchuk
Frontend Developer

Profile Details
Experienced Frontend Developers with a track record of success in Kyiv
companies like MacPaw, EPAM, and beyond. Skilled in JavaScript, Ukraine
TypeScript, React, and more, with a commitment to driving [відкрити контакти](див. вище в блоці «контактна інформація»)
high-quality deliverables. Proven ability to lead comprehensive [відкрити контакти](див. вище в блоці «контактна інформація»)
refactoring efforts, enhancing system performance by over 300%.
Aspiring to transition into a Software Architect role, leveraging Skills
technical expertise to design scalable systems and cultivate leadership JavaScript
capabilities. Seeking new opportunities to further advance and
innovate in the field of frontend development. TypeScript

ReactJS
Employment History
web applications
Front End Developer at MacPaw, Kyiv
January 2022 — November 2024 code reviews
As a Front End Developer at MacPaw, I am involved in developing and
maintaining web applications using TypeScript, React JS.

• Development of new features and delivery of them to PROD.
• Creation of clean and effective code, with good modification.
• The analysis could be carried out by Product Owner and Business
Analyst.
• Focus on technical solutions in the product.
• Technical support for production services.
• Proactive identification and resolution of potential problems and
issues.
• Reviewing the architecture of solutions, searching for optimal
solutions.

Frontend Developer at EPAM, Kyiv
February 2019 — February 2022
• Developed and maintained interactive web applications using
JavaScript, React, and TypeScript.
• Optimized application performance by implementing modern
state management solutions (Redux, MobX).
• Integrated APIs and developed solutions for seamless
communication between frontend and backend systems.
• Collaborated with cross-functional teams, including designers,
analysts, and backend developers, to create user-friendly and
functional interfaces.
• Implemented responsive design to ensure optimal performance
across various devices.
• Conducted code reviews and enforced best practices in frontend
development.
• Utilized CI/CD tools to ensure smooth and continuous integration
and delivery of the product.
Front end Developer at OKWINE.UA, Kyiv
January 2021 — February 2022
• Developed and maintained functionality for the e-commerce
platform OKWINE.UA, ensuring an excellent user experience.
• Implemented responsive design, optimizing interfaces for
mobile, tablet, and desktop devices.
• Integrated APIs to enable fast access to product, order, and
customer data.
• Improved website performance by optimizing JavaScript, CSS,
and image assets.
• Collaborated with marketing and design teams to implement
promotional campaigns and new features.
• Developed modules for cart management, online payments, and
order tracking.
• Conducted testing and debugging to ensure the website's
stability and reliability.

Frontend Developer at Intecrasy group, Kyiv
August 2017 — January 2021
• Designed and developed web applications and business solutions
tailored to client needs using modern JavaScript frameworks.
• Collaborated with cross-functional teams, including analysts,
designers, and backend developers, to deliver high-quality
software products.
• Integrated third-party APIs and services to enhance functionality
and improve user experience.
• Optimized application performance and implemented best
practices in front-end development.
• Contributed to the development of enterprise-level systems-
, ensuring scalability, maintainability, and security.
• Participated in code reviews and provided mentorship to junior
developers within the team.
• Utilized Agile methodologies to deliver projects on time and meet
customer expectations.

QA Manual at Intecracy group, Kyiv
April 2015 — July 2017
• Performed manual testing of web and mobile applications
to identify and report bugs, ensuring software quality and
functionality.
• Created and maintained test cases and checklists based on
project requirements and specifications.
• Executed functional, regression, integration, and exploratory
testing to ensure a smooth user experience.
• Collaborated with developers and product managers to clarify
requirements and ensure alignment with business objectives.
• Tracked and reported defects using bug-tracking tools (e.g., Jira),
providing detailed descriptions and steps to reproduce.
• Validated API responses using tools like Postman to ensure
backend and frontend integration works seamlessly.
 • Provided suggestions for process improvements to enhance the
overall QA workflow and increase team efficiency.
• Worked in Agile/Scrum environment, participating in daily
stand-ups, sprint planning, and retrospectives.

Education
law, Taras Shevchenko National University of Kyiv, Kyiv
September 2006 — May 2012