Artem Beresnev

Collectly offers SaaS for US medical groups to boost patient cash flow and cut collection costs, engaging 300,000+ patients daily. Achievements: - Introduced multi-language support, enabling 40K+ non-English messages/month - Overhauled payment plan flow on both patient/practice platforms, switching from AngularJS to React, resulting in a 20% revenue boost - Implemented Playwright for screenshot tests, accelerating regression testing

At Europe's largest C2C/B2C marketplace (real estate, cars, goods, services, 150M ads), I: -Launched payment services on desktop/mobile, cutting tech adjustments to speed up value delivery -Orchestrated contracts for seamless front end, mobile app, backend integration -Took on a T-Shape role, tackling Golang and PHP backend tasks for sprint goals -Led a new tariff plan's development (500K ads), managing requirements, applying Agile for project breakdown, providing estimates for resource management

Global SaaS provider to 135,000+ businesses for enhanced communication: messenger, calls, video conferencing, contact center, and file sharing. Achievements: - Integrated an Angular app into a messenger, boosting Monthly Active Users 2.5x - Developed a SPA's architecture with Angular 2+/AngularJS, achieving 70K+ Daily Active Users - Created a hybrid app blending a modern Angular 2+ UI kit with React - Implemented multi-level testing with unit (from 0% to 40%), integration, and E2E tests

Country-leader digital agency develops websites and provides digital marketing services. - Developed UI for e-commerce and building developers using jQuery, Vue.js, React - Configured pipelines to launch React inside static jQuery websites - Developed UI-kit components for React apps