- Tech Lead for Search Page Frontend (team of 3 engineers). - Improved page performance: Implemented asynchronous search architecture with skeleton screens, improving TTI by ~60% and reducing rendering delays by ~10% across all major markets. increased CTR & conversions in A/B tests. - Reduced customer-visible blank states during loading. - Major architecture redesign of frontend filters using Backend-Driven UI. - Rebuilt interaction contract with backend. - Delivered a unified filter widget used across multiple templates. - Reduced code duplication by ~70%. - Reduced maintenance complexity; now maintained by a single team instead of 5. - Led the redesign of the Search module, resulting in: - +45% retention increase, - higher user engagement and scroll depth. - Developed a Next.js internal debugging platform used by multiple teams: - Reduced debugging time by 2×, - Enabled live card preview & component override system, - Helped QA & backend teams reproduce issues quickly. - Participated in technical interviews, code reviews, mentoring. Stack: React, TypeScript, Next.js, Jest, React Testing Library, Storybook, CSS Modules, GitLab CI/CD

- Led a team of 6 developers, responsible for onboarding & interviewing. - Built the company-wide Payment Modal System from scratch: - Improved overall deposit success rate, - Reduced UI failures and improved user flow reliability. - Introduced reusable UI components and improved developer experience. Stack: React, TS, Next.js, Jest, RTL, Storybook

- Key frontend developer for Hockey Scout platform (video analytics). - Migrated large parts of the project from recompose → React hooks, improving maintainability. - Implemented modern build stack with Vite/Rollup: - Reduced bundle size, - Improved rebuild time by 40%. - Onboarding, tech interviewing. Stack: React, TS, MobX, GraphQL, Redux Toolkit, Cypress, Storybook, Styled Components, Vite, Rollup

- Built internal systems for time-tracking, vacation planning, HR workflows. - Created new UI modules from scratch and maintained production systems. - Improved form validation and reduced support requests. Stack: React, TypeScript, Redux, CSS Modules

- Led backend development and third-line maintenance for critical financial systems. - Built XSD data models, SOAP APIs, system-level integrations. - Worked closely with functional customers & contractors. Stack: Java, JMS, Tibco integration, Oracle Db, PL/SQL, SOAP, HTTP, SSL

- Implemented backend API and business logic according to requirements from the product owner. - Technologies used: Java EE, OracleDB, Hibernate, EJB, GWT, JUnit, REST.