Senior Frontend Engineer | Web Performance Expert & Design Systems Lisbon, Portugal (Open to Remote / Global)
[email protected] | LinkedIn | dmitrikarasjov.com
PROFESSIONAL SUMMARY
Senior Frontend Engineer with 9+ years of experience specialising in building scalable frontend architectures, high-performance web applications, and comprehensive Design Systems. Proven track record at Pipedrive and Yolo Group in delivering complex technical solutions, including a custom WYSIWYG, customer support management platform and centralised UI libraries. Expert in React, TypeScript, and Next.js, with a deep focus on Performance Optimisation and Complex State Management. Adept at bridging the gap between product design, management and engineering to reduce Time-to-Market (TTM).
KEY ACHIEVEMENTS
- Scaling Infrastructure & Performance: Successfully migrated a legacy monolithic frontend to a modular architecture, enabling independent deployments. Optimised core application flows to deliver top-tier performance (Lighthouse 90+), significantly improving user retention and conversion rates.
- Business Impact & Internal Tooling: Architected and delivered low-code/automated tools for internal customer support, marketing and product teams, saving 100+ operational hours per month and removing bottlenecks for operational workflows.
- Strategic Technical Leadership: Orchestrated the company-wide adoption of a unified Design System, establishing a single source of truth for UI/UX that accelerated feature delivery across multiple cross-functional teams.
TECHNICAL EXPERTISE
- Frontend: React, Next.js, TypeScript, Tailwind, Styled Components, Context/Redux/Zustand.
- Performance & Architecture: Core Web Vitals, Module Federation, Micro-frontends, Rendering Strategies (SSR/ISR/SSG).
- Platform & Design Systems: Component Library Development, Design-to-Code, Figma.
- Backend & Infra: Node.js, GraphQL, Elixir/Phoenix (LiveView), PostgreSQL, AWS (S3, CloudFront, Lambda).
- Tools: Git, CI/CD (GitHub Actions), Vite/Webpack, Jest/Cypress.
PROFESSIONAL EXPERIENCE