Artem – React, JavaScript, Docker

TVScientific (later acquired by Pinterest) is a leading Connected TV (CTV) advertising platform that enables brands to launch, manage, and optimize advertising campaigns across major streaming services. As a core engineer, I helped evolve the engineering platform by improving frontend architecture, developer experience, release confidence, and AI-assisted development workflows while delivering complex product features end-to-end.

• Owned end-to-end delivery of complex product workflows across UI, API integration, testing, rollout, and production readiness
• Evolved the frontend platform by leading architecture improvements, TypeScript adoption, and reusable application infrastructure
• Increased release confidence by establishing automated testing, quality gates, and CI/CD validation for critical product flows
• Designed and implemented an internal MCP server to enable AI-assisted engineering workflows and improve developer productivity
• Modernized frontend engineering practices through shared validation, reusable components, and improved developer experience;
• Implemented enterprise-grade authentication and authorization with Okta
• Collaborated closely with product, design, backend engineers, and QA to deliver customer-facing features from design through production

The web service for analysis of investments, investors, and funds to further increase income.

• Rewrote class components to be functional
• Started covering components, hooks, and helpers with unit tests using Jest and Testing Library
• Replaced Qlik Sense charts from iframe to SVG charts using HighchartsJS library (including styling, normalizing the resulting data from hypercubes, etc.)
• Updated the MobX version to a newer one for use in functional components instead of decorators in class components, and to prevent critical security issues and improve performance
• Refactored the structure of the store to save hypercube data
• Mentored new developers in the team

McKesson is a global healthcare technology and pharmaceutical services company. As part of the modernization initiative, I contributed to migrating a large enterprise application from a legacy jQuery architecture to React, with a focus on complex data grids, frontend performance, and long-term platform maintainability.

• Contributed to the migration of a large enterprise application from a legacy jQuery architecture to React
• Modernized complex data-intensive interfaces while maintaining compatibility with existing backend APIs during the transition
• Optimized rendering performance of large data grids using virtualization, memoization, lazy loading, and React profiling techniques
• Implemented efficient rendering strategies for complex table cells containing interactive components and embedded visualizations
• Improved responsiveness of complex filtering, sorting, and navigation across interconnected datasets
• Collaborated with backend engineers to support legacy APIs while enabling gradual frontend modernization
• Investigated and resolved performance bottlenecks across large-scale enterprise workflows
• Maintained and extended critical healthcare functionality throughout the modernization effort

ThredUP is an apparel resale marketplace, offering a convenient option for shopping and selling quality secondhand women’s and children’s clothing, shoes, and accessories.

• Implemented new loyalty programs
• Covered 80% of functionality with unit tests
• Created new pages for categories
• Optimized style codebase
• Cleaned old loyalty programs
• Customized subcategories at the top of the site

Playchap is a platform where you can play retro skill-based arcade games against other players and be rewarded with Ethereum cryptocurrency.

• Added Redux state manager
• Connected canvas games with backend using Websockets
• Refactored code

Ok,Alfa is a service for managing payment accounts for private entrepreneurs, creating ordinary and regular payments.

• Designed the main elements of the form
• Developed rules of data validations Routine responsibilities:
• Added fields for collecting personal data
• Added pages with manuals and instructions

Many Mornings is an online store that sells socks with special designs.

• Designed architecture of the web app
• Integrated payment systems (PayPal)
• Integrated delivery service (DPD)
• Integrated receiving posts in Instagram
• Implemented multilingualism
• Changed structure of landing page
• Added help pages