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Location

Ukraine

Rate

$32  / per hour

Years of experience

9+

About

As a Senior Frontend Developer and Tech Lead with over 9 years of experience, I bring a wealth of expertise in developing and delivering high-quality web and mobile applications. My journey in the tech industry has equipped me with a deep understanding of business needs and a product-oriented approach to software development. I excel in JavaScript (ES6), TypeScript, HTML5, and CSS3, and have extensive experience in the React.js ecosystem, including ReactNative for mobile app development on iOS and Android platforms. Throughout my career, I have demonstrated strong leadership and mentoring abilities, guiding teams to achieve product roadmap goals while maintaining a hands-on approach to coding. My technical skills extend to NodeJS for building RESTful APIs with NestJS and Postgres, and I am proficient in various libraries and frameworks such as Redux, MaterialUI, and NextJS. I am recognized for my ability to collaborate effectively within international teams, continuously learning from peers and sharing knowledge. My focus on user experience and performance optimization has been key in developing complex, data-intensive web applications with custom visualizations. As a team player and mentor, I thrive in fast-paced environments, driving innovation and delivering exceptional results.

Tech Stack

React, CSS, HTML, JavaScript, Jenkins, NestJS, Next.js, Node, Node.js, Redux, Typescript

Experience

  • Led and managed a team of frontend developers - As the Tech Lead at Corva, successfully led a team of four, focusing on management and coding, and consistently met product roadmap goals.
  • Developed complex, data-intensive web applications - At Corva, created sophisticated web apps featuring extensive use of charts and custom visualizations, emphasizing beautiful user experience and performance optimizations.
  • Implemented new designs from Figma to production with precision - At Grubhub, translated designs into fully functional, pixel-perfect web applications, ensuring high-quality user experiences.
  • Enhanced testing processes and coverage - Dedicated significant effort to improve test coverage and update old tests, enhancing reliability and performance at Grubhub.
  • Oversaw company-wide technological direction and coding standards - At Brocoders, led the technological strategy and managed a large team of developers, significantly influencing project outcomes and tech adoption.
  • Developed and maintained RESTful APIs using NodeJS and NestJS - Expanded technical expertise by designing and implementing backend solutions, enhancing overall project capabilities at Brocoders.
  • Conducted detailed code reviews and professional development - Focused on professional growth of junior and mid-level developers through meticulous code reviews and clear developmental feedback at Brocoders.

Employment history

Senior Frontend Engineer, Tech Lead, Corva, Kyiv February 2022 - January 2024

Field: Company works in in oil and gas industry. Data visualizations and analytics apps for drilling.
Responsibilities:
• Led frontend developers of a Geoscince team (4 people). 20% management, 80% coding. Successfully reached the product roadmap goals in 2 years.
• Developed a complex data-intensive web apps with lots of charts and custom visualisations.
• Focused on beautiful UX and performance optimisations.
• Supported existing apps, working on a tech debt, negotiated with managers to acquire time for refactoring.
• Made several company-wide initiatives that were accepted and made developers happier.
• Converted client needs and wishes to descent solutions, made biweekly meetings to demo actual progress to clients.
Tech stack: React, ReactQuery, Redux, Zustand, eCharts, HighCharts, Jest, React Testing Library, MaterialUI.

Frontend Engineer, Grubhub, Chicago December 2020 - February 2022

Field: Food delivery (one of the biggest aggregator for restaurants and cafes).
Responsibilities:
• Worked as main frontend engineer in a post purchase experience team (order tracking).
• Implemented new designs from Figma in a pixel perfect manner.
• Created an experiment for A/B testing new features.
• Deeply worked with the test coverage – spent near 40% of coding time on tests, fix old flaky tests.
Tech stack: React, Typescript, Jest, React Testing Library, Mockito, CircleCI, Jenkins, SCSS.

Head of Development, Tech Lead, Brocoders, Sumy November 2019 - December 2020

Field: Outsourcing company focused on startups. Clients are worldwide.
Responsibilities:
• Company-wide tech leading (30% coding, 70% management).
• Helped to define tech stack for every new project.
• Picked new technologies that we should focus as a company.
• People management (30+ devs).
• Defining personal goals, development plans e.t.c.
• Recurring 1×1 with people.
• Performance reviews.

Continued to work as developer on company website (brocoders.com).
• Weekly communications with CTO about the statuses of ongoing projects.
• Made project estimations and presale advising for sales department.
• Participated the tech interviews for newcomers.
• Created test tasks for interns and mentorship documentation.
• Created documentation and guides for other developers.
Tech stack: React, Typescript, Gatsby.js, NextJS, NodeJS, ReactNative

Senior Frontend Developer April 2016 - November 2019

Field: Outsourcing company focused on startups. Clients are worldwide.
Responsibilities:
• Worked on a frontend part of wide-range of company projects. Usually created a projects from scratch in team of 1-2 mid/jun
developers.
• Made detailed code-reviews to make developers grow professionally.
• Planned a sprint tasks with a project manager, made tasks decomposition, estimated and defined acceptance criteria.
• Participated in the tech interviews.
• Worked on internal mobile app project with ReactNative (expo).
• To expand own knowledge, worked as NodeJS BE developer to create a restful API with NestJS.
Tech stack: React, Redux, NodeJs, ReactNative, NestJS, TypeORM, Postgres, ReactToolkit, Formik, React hook form, React Query, etc.

Frontend Developer, Rezonans, Sumy April 2015 - April 2016

Field: Outsourcing Company
Responsibilities:
• Worked a frontend developer on several projects.
• Deep collaboration with BE developers, sometimes made little changes in Ruby on Rails code independently.
• Usually, used a different UI frameworks to turn low-fidelity designs (mockups) to visually appealing web pages.
Tech stack: Angular 1.x, jQuery, RubyOnRails, Lodash, SCSS, Bootstrap, SemanticUI

Education history

Kharkiv National University of Internal Affairs, Kharkiv 2003 - 2008 Bachelor degree in Computer Science
Information Security

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