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Alex – Jest, React Native, React, experts in Lemon.io

Alex

From Ukraine (GMT+3)

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Front-end Web DeveloperSenior
Mobile DeveloperSenior
Hire developer
9 years of commercial experience
AI
Automotive
Cybersecurity
Real estate
Retail
AI software
Enterprise software
Identity verification software
Mobile apps
Platforms
SaaS
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Alex – Jest, React Native, React

Senior Web and Mobile developer with strong JavaScript understanding and a perfect acquaintance with React ecosystem. He is passionate about creating stable, scalable solutions that offer seamless developer and user experiences. As an advanced English speaker, he is equally comfortable making concise arguments or sharing a light-hearted joke. Communication skills have been honed through working with diverse teams of various sizes and backgrounds, as well as through independent projects. He is ready to take responsibility for the project as an individual contributor or team member.

Main technologies
Jest
6.5 years
React Native
6.5 years
React
8 years
GraphQL
2.5 years
Typescript
4 years
Context API
1 year
Additional skills
Figma
MapBox
Storybook
Redux
React Hooks
Formik
Apollo GraphQL
AI
Expo
Rewards and achievements
June 2024: Vlada Summary
Ready to start
ASAP
Direct hire
Potentially possible

Experience Highlights

Senior Software Engineer
Nov 2022 - Ongoing1 year 6 months
Project Overview

A website that is a leading online automotive marketplace that facilitates direct connections between buyers and sellers of new and used cars. Operating primarily in the United States, Canada, the United Kingdom, Germany, and Italy, the platform serves millions of users monthly, making it a widely recognized tool in the global automobile industry. As of 2021, the platform had over 20 million unique monthly users, representing a significant segment of the global car-buying market.

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Responsibilities:
  • Engaged heavily and proactively in the development of a sophisticated automotive marketplace platform catering to car enthusiasts
  • Crafted detailed car listings with comprehensive price analysis, insightful dealer reviews, and extensive vehicle history reports
  • Empowered potential buyers with valuable information to make informed decisions
  • Demonstrated a thorough understanding of the platform's underlying architecture and industry-leading best practices
  • Collaborated closely with esteemed teammates, sharing knowledge to enhance the project
  • Successfully implemented cutting-edge features and streamlined user experiences
  • Contributed to the platform's competitiveness in the automotive marketplace
Project Tech stack:
React
React Native
Typescript
Redux
Context API
React Hooks
Senior Frontend Engineer
Oct 2021 - Nov 20221 year
Project Overview

An international real estate company which provided services via web & mobile experiences. It operates in over 50 regions across the globe, including North America, Europe, Africa, and Asia. Known for its agent-centric, technology-driven approach, the product provided a wide array of real estate services. The platform offered residential and commercial real estate listings, along with comprehensive agent profiles. As of 2021, the company is the world's largest real estate franchise by agent count, with approximately 180,000 associates.

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Responsibilities:
  • Instrumental in shaping a novel mobile experience for a prominent online real estate product
  • Joined the project during its nascent phase, making influential architectural decisions
  • Managed requirement clarifications and coordinated with diverse teams
  • Crafted robust features using the latest versions of React Native and innovative third-party solutions from the React ecosystem
  • Ensured high code quality through comprehensive unit testing, effective debugging, and efficient resolution of complex issues
  • Gained expertise in the project structure, testing methodologies, and continuous integration and deployment processes
  • Enhanced knowledge of industry-leading development best practices, design patterns, and state-of-the-art tools
  • Contributed pivotal to transforming the user experience on KW's mobile platform, delivering an intuitive, robust, and innovative tool for real estate transactions
Project Tech stack:
React
React Native
Apollo GraphQL
Formik
Jest
Senior Frontend Engineer
Dec 2019 - Oct 20211 year 10 months
Project Overview

The platform in question is an award-winning AI-powered tool that facilitates multi-factor, dynamic ID verification, enabling user onboarding regardless of geographic distance. It spurs revenue growth and ensures a seamless user experience by swiftly and securely verifying and onboarding end users through a comprehensive visual ID verification and fraud detection solution.

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Responsibilities:
  • Played a vital role in scaling a complex web application for identity proofing and verification
  • Ensured the highest level of reliability and security, catering to a client base of major banks
  • Gained substantial exposure to JavaScript machine learning libraries, including FaceMesh and FaceAPI
  • Contributed to enhancing the facial recognition capabilities of the application
  • Experienced the dynamic startup business culture, collaborating closely with the CTO
  • Successfully managed technical debt and compromises, honing my refactoring skills
  • Concurrently focused on developing new features, fixing bugs, and improving performance
  • Utilized key technologies, including React, ES2017, TensorFlow (FaceMesh, FaceAPI), GraphQL, and EXIF format
Project Tech stack:
React
React Hooks
AI
GraphQL
Senior Frontend Engineer
Jul 2019 - Dec 20195 months
Project Overview

An innovative cross-platform application was developed to simplify the booking of meeting rooms and improve office navigation using interactive maps. This application served as a vital element in the flexible workspace business domain, catering to dynamic work environments.

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Responsibilities:
  • Developed a cross-platform application streamlining meeting room booking and enhancing office navigation
  • Transformed a .png image into an interactive map with overlaying workspaces
  • Crafted a custom calendar with a sophisticated event-handling system
  • Leveraged cutting-edge technologies like hooks and contexts throughout the project
  • Made significant contributions to strategic decision-making, selecting optimal tools for the project
  • Broadened skillset, gaining insights into state management without Redux, Expo limitations, React Native animations, and multilingual support
Project Tech stack:
React Native
React Hooks
Redux
Expo

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