Zakhar L
Zakhar L
Senior Frontend Developer
15 years of experience
Location
Krakow, Poland
  • Open to remote
  • Open to relocate
Languages
  • Russian (C1)
  • English (B2)
  • Ukranian (C1)
  • Polish (B2)
Education
  • Bachelor
    Computer Computer Systems Networking and Telecommunications Kharkiv National University of Radioelectronics 1999 - 2004
Tech Stack
Rest API
React React
Angular Angular
AWS AWS
Vue Vue
Automated testing
Next.js
Experience
  • Front Tech Lead

    October 2023 - January 1970

    Lytvynov Production

    As a Front-end Technical Lead, I stand at the forefront of developing cutting-edge web applications, steering projects with a blend of technical mastery and leadership acumen. My role is pivotal in guiding a talented team of developers through the complexities of modern web development, ensuring that we consistently push the boundaries of what's possible. I specialize in architecting scalable, high-performance front-end systems, leveraging the latest technologies and frameworks such as React, Redux, and NextJS, to deliver intuitive and immersive user experiences.

    My expertise extends beyond coding; it encompasses strategic planning, technical decision-making, and fostering a culture of innovation and continuous learning within the team. I thrive on solving complex technical challenges, optimizing workflows, and mentoring developers to unlock their full potential. By maintaining a hands-on approach and staying abreast of the latest industry trends, I ensure our projects not only meet but exceed the highest standards of quality, performance, and user satisfaction. Leading by example, I am committed to driving excellence in every aspect of our work, from conceptualization to deployment, making a lasting impact in the digital landscape.

    React
    TypeScript
    Node.js
    Express.js
    GraphQL
    Apollo Client
    Redux
    Jest
    Enzyme
    Webpack
    Babel
    Tailwind CSS
    Sass
    Docker
    Kubernetes
    AWS (EC2
    RDS
    S3)
    Git
    Jenkins
    Elasticsearch
    Redis
    PostgreSQL
    MongoDB
    RabbitMQ
    WebSockets
    Figma
    Postman
    VS Code
    Linux.
  • Team Lead / Senior JavaScript Software Developer

    August 2016 - September 2023

    NIX

    Interactive platform for investigate public opinion about future ad campaign in game mode. Implemented: Developing and implementing game logic; added geolocation; updating web-app architecture and structure; multilingual;

    Interactive Android/IOS game for kids for learning algorithms Google
    Blockly based. The following features were implemented: Developing and implementing game logic; Implementing connection between JS part and QT5 part based on WebSockets(API architecture and data structure); Adding interactive animations; adding multilingual support;

    JavaScript
    TypeScript
    SQL
    XML
    XSLT
    JSON
    CSS
    HTML
    XPath
    React
    Redux
    NextJS
    Webpack
    Babel
    Underscore
    Lodash
    Bootstrap
    jQuery
    Node.js
    Browserify
    Grunt
    Gulp
    AJAX
    Sass
    MySQL
    PostgreSQL
    MongoDB
    pgAdmin
    MySQL Workbench
    Command prompt
    VS Code
    WebStorm
    Linux
    Ubuntu
    VMware
    VirtualBox
    Postman
    Vitest
    Jest
    Mocha
    Enzyme
    RTR/RTL
    JUnit
    Selenium WebDriver
    cucmber
    Puppeteer
    Jenkins
    GitHub
    Bitbucket
    GitLab
    Jira
    Confluence
    Git
    SVN
  • QA Automation Engineer

    January 2009 - August 2016

    NIX Solutions

    As a seasoned QA Specialist, I possess a comprehensive expertise in ensuring the highest standards of quality for software development projects. My role involves a meticulous approach to testing methodologies, encompassing both automated and manual testing techniques to identify and rectify any potential issues before they reach the end-user. With a keen eye for detail and a relentless pursuit of perfection, I excel in creating and executing detailed test plans, strategies, and scripts, ensuring that every aspect of the software is rigorously evaluated for functionality, usability, and performance.


    My expertise extends beyond traditional testing practices, incorporating the latest tools and technologies to streamline the QA process. This includes proficiency in automation frameworks, continuous integration systems, and bug tracking tools, allowing for efficient identification and management of defects. I am adept at working closely with development teams to foster a culture of quality from the initial stages of development through to product launch. My proactive approach and dedication to quality assurance not only minimize the risk of post-release issues but also significantly enhance product reliability and user satisfaction.

As a Lead Frontend Developer, I've navigated the ever-evolving terrain of web development, mastering both the art and science of creating state-of-the-art digital experiences. My journey is defined by a relentless pursuit of innovation, where I leverage cutting-edge technologies and frameworks to build scalable, robust, and visually captivating applications. With a deep-rooted passion for frontend development, I blend technical leadership with hands-on expertise, guiding teams towards achieving excellence in every project.
/ Short version
Senior Frontend Developer
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