Andrii – JavaScript, React, React Native

This is an e-commerce analytics company that helps Shopify stores better understand their customers and generate revenue; we're now working towards building a version of the product that is agentic and works on behalf of our customers to actively identify opportunities to drive revenue by suggesting and implementing marketing campaigns.

• Developed a web-based AI assistant to provide users with business data;
• Implemented a universal UI library for ElevenLabs integration;
• Wrote and maintained unit tests to ensure code quality and reliability;
• Integrated Claude for AI-powered code review automation.

A mission-driven healthtech startup which is developing a HIPAA-compliant precision psychiatry platform to transform the diagnosis and treatment of mental health disorders

• Provided technical expertise and guidance to support project development and decision-making;
• Created MVP designs in Figma, translating concepts into user-friendly interfaces;
• Built a front-end component library.

The project was created as an internal tool for a real estate company to manage documents and reports. Andrii mentioned it was one of the best fast-growing companies he's ever seen.

• Debugged and resolved application issues;
• Managed and coordinated the development team to maintain productivity;
• Established the project structure for scalable and maintainable code;
• Participated in project discussions, providing insights from a business perspective;
• Integrated software from multiple partner companies to enhance overall system capabilities.

A specialized search engine designed for discovering creators on OnlyFans. It allows users to search for profiles using keywords and filters, addressing the platform's lack of a robust native search function. Key features include the ability to refine searches by content type, subscription price, and popularity, helping users find relevant creators efficiently

• Built and maintained the user Interface using the most relevant tech stack;
• Searched for and filtered functionality development and maintaining;
• Took care of security and privacy;
• Integrated advertising services;
• Took care of API integration, BE team requirements management.

Internal planning system for corporate needs provides a wide range of utilities for project planning, estimations, scheduling, and role delegation. Based on NextJS and AWS services.

• Integrated project lists displaying functionality with wide filtering and search features;
• Provided unit testing;
• Implemented complete project creation and editing process with nested forms and charts;
• Created a complex nested expenditure items management system using React Query and Axios libraries;
• Performed semantic and performance optimization of the website pages;
• Provided debugging lessons for the customer-side team.

An app for corporate clients to monitor colleagues' performance, provide guided tours to maintain mental stability and wellbeing.

• Created app from scratch;
• Optimized performance;
• Deployed to Google Play market and App Store;
• Took part as a decision-maker to make the app more usable and effective.

This Analytics Automation Platform delivers end-to-end automation of analytics, machine learning, and data science processes.

• Integrated React website and Sitecore service;
• Developed many features like filtering, form handling, various navigation behavior, and third-party services integration;
• Managed 3-4 front-end team members;
• Planned processes and assigned workload to each member, communicated with customers daily.

Mobile app for pet owners with ability to manage data about pet, map with pet shelters etc

• Took part in redesign and implementation of new app screens;
• Refactored existing codebase;
• Implemented new atomic structure of app components, reworked models to more optimized ones.

Product's Watch Together white-label solution (SDKs & APIs) powers the world’s best co-viewing experiences for media companies, telcos, sports leagues, and OTT vendors inside their platforms. These include BT Sport, NPO, T-Mobile, FFF, Eurovision Song Contest, ScreenHits, and others.

• Developed front-end demos;
• Implemented layout styles with Semantic UI library, CSS, SCSS, Material UI;
• Created demo apps for users using customer's SDKs (Web SDK, Sync SDK);
• Developed SDKs (Web SDK, Sync SDK), worked with WebRTC;
• Restricted customer's back-end part;
• Developed Admin console for global configuring of SDKs.

A mobile app with a discount list for EU and US stores. Provides some features related to sales, linking to store websites with cashback offers.

• Implemented discount lists;
• Built and redesigned app layouts;
• Integrated deep linking services;
• Integrated analytics tracking services;
• Reworked App navigation;
• Integrated push notifications services;
• Optimized performance.

Andrii worked with two applications on the same project. The first was a service for cannabis delivery drivers, and the second was a web store for cannabis delivery companies. The project was bought by another company; now it doesn't work.

• Developed front-end part with React Native tools;
• Created driver status service;
• Created tracking service;
• Created sorting functionality;
• Created catalog list;
• Created product page;
• Created driver positions map;
• Implemented layout styles with CSS.