Ivan – React, JavaScript, HTML

A major online lottery platform where players search, buy, and manage lottery tickets online. The client and back-office apps were migrated from a legacy jQuery/Drupal stack to a modern React/Next.js architecture for the best possible user experience and performance.

• migrated the client and back-office apps from legacy jQuery/Drupal to a React/Next.js stack;
• built and maintained a reusable front-end component library with Chakra UI;
• designed and implemented UI, prototyping and iterating with AI-assisted tooling;
• set up and ran A/B tests to validate changes and improve conversion;
• implemented back-end features via Next.js API routes and Prisma database access;
• analyzed New Relic data to identify and resolve performance and UX issues;
• optimized Lighthouse and SEO scores to the highest achievable levels;
• debugged and resolved application issues across client and back-office.

A casino gaming platform built on Web3 technologies, where players connect their crypto wallets to play and manage funds. The product pairs a React front-end with a headless CMS/admin setup for content and operations, optimized for performance and SEO.

• developed a casino / Web3 platform built on Web3 technologies;
• integrated wallet connectivity with WalletConnect and RainbowKit;
• set up Retool and Sanity as the CMS/admin system;
• implemented prerendering for SEO;
• integrated push notifications via OneSignal;
• built front-end UI and data grids with Chakra UI and AG Grid;
• optimized Lighthouse and SEO scores to the highest achievable levels.

The product provides exclusive sportsbook content solutions, comprehensive sports data services, and effective iGaming software. These client-focused and quick-to-market products offer exciting entertainment to boost customers’ engagement and help achieve the most ambitious business goals.

Ivan worked on the following features:

• integrated new partners;
• created and improved front-end architecture;
• managed a development team.

• created front-end architecture;
• build mobile version of app
• build sdk solution for third party integrate
• mentored front-end developers;
• created SEO solutions for React, SSR solution, widget/SDK frame solution, semantic release npm lib structure;
• set up CI/CD for development.

One intuitive app for your POS, contactless pickup, mobile orders, marketing, team management, and more. Simple pricing, great support, and a system that just works.

Ivan worked on the following features:

• integrated new partners on the front-end side;
• developed offline first mobile web;
• developed CRM/CMS systems.

• integrated new partner on the front-end side;
• developed offline first mobile web;
• develop CRM/CMS systems.

The ultimate team-building and skill-growing platform that will solve problems for hundreds of millions of gamers who want to find teammates, improve skills, manage teams, and earn money.

Ivan worked on the following features:

• created frontend architecture;
• created lib frontend design system;
• handled SEO issues.

• created front-end architecture (SSR, mobile first);
• created lib front-end design system;
• handled SEO issues;
• designed multiple "partners" system on the FE side;
• developed Overwolf in-game plugin;
• wrote unit, integration, and e2e tests.

Bidstack enables game developers to monetize their titles and empowers advertisers to engage gamers, without disrupting their playing experience.

Ivan worked on the following features:

• created solutions for selling advertisements in real life;
• created solutions for selling advertisements in computer games (Football manager).

• created a front-end application with server-side rendering;
• worked with big data on the FE side calculations, service-worker, PWA;
• worked with google maps API, created the custom solution, and contributed to open source;
• wrote unit, integration, and e2e tests;
• set up CI/CD.