Teodor Tkaczyk Email & Phone Number

Wrocław, Pl

Wrocław, Dolnośląskie, Poland

- Boosted Customer Engagement with Redesigned Functionality:Implemented a new component design that improved usability and user flow, leading to a 1.3x increase in feature engagement among customers. This redesign enhanced the overall user experience, driving higher satisfaction and adoption rates.- Led Onboarding Feature Development for New Customers:Managed a small team to design, implement, and present a comprehensive onboarding flow, improving new user activation and increasing product adoption.- Scalable Nx.js Architecture:Initialized Nx.js with module federation and integrated tools (Prettier, ESLint, Husky), enhancing code consistency and accelerating feature delivery.- CI Pipeline for Storybook:Automated Storybook deployment via GitHub Pages, streamlining designer collaboration and speeding up design approval.- Automated E2E Testing for Critical User Paths:Created robust end-to-end tests using Playwright, covering key customer journeys and ensuring high-quality user experiences through automated regression checks.- Enhanced Frontend Performance with Backend for Frontend (BFF) Architecture:Developed REST API endpoints using Nest.js, acting as a BFF layer to optimize frontend data fetching, reducing latency and improving user experience.- Increased Unit Test Coverage for Core Business Logic:Boosted unit test coverage by 7 percentage points, focusing on critical business logic, which led to a more stable and predictable codebase.

Wrocław, Dolnośląskie, Poland

- Streamlined TypeScript Typing:Enhanced TypeScript integration in Nx.js module federation between apps, boosting code reliability and reducing errors.- Automated Frontend Testing:Configured Cypress to run on GitHub Actions with Docker (AWS ECR), automating detection of functional issues and visual regressions, improving release quality.- Enhanced Error Monitoring:Built error-catching for React apps with detailed diagnostics and Grafana dashboards, enabling faster issue resolution and reducing downtime.- Automated Security Management:Set up Dependabot for continuous dependency monitoring, detecting vulnerabilities, and ensuring stable, secure releases.- Standardized Code Reviews:Established a structured code review process, improving collaboration and code quality.

Warsaw Metropolitan Area

- Designed and Implemented an Engaging Onboarding Experience:Developed a comprehensive onboarding page to introduce customers to product features, increasing user understanding and driving higher engagement from the start.- Streamlined E-commerce Navigation with Route Migration:Successfully migrated a ready-to-use e-commerce system to a dedicated route under the landing page, enhancing user navigation and SEO by providing a seamless experience.- Built a Reusable Component Design System in Monorepo Architecture:Contributed to the creation of a robust component design system within a monorepo structure, enabling consistent UI across multiple projects and reducing development time by standardizing reusable components.

Wrocław, Dolnośląskie, Poland

- Enhanced Customer Experience with Custom Invoice Generation:Built a dynamic invoice generation system using react-pdf, simplifying the billing process for customers and reducing manual errors.- Led End-to-End Checkout Implementation:Collaborated closely with backend teams to architect and develop a comprehensive checkout process for an e-commerce application, improving user satisfaction.- Optimized Marketing Analytics Integration:Partnered with the marketing team to enhance user tracking by integrating Google Analytics, GTM, and Facebook Pixel, enabling data-driven decision-making and boosting campaign efficiency.- Responsive Web Application Development:Contributed to develop a fully responsive e-commerce platform with seamless webview communication for mobile devices, significantly enhancing mobile user engagement.- Established Testing Framework for Enhanced Stability:Introduced unit testing with Jest and React Testing Library, reducing production issues.

Strzelin, Dolnośląskie, Poland

Project and realization online shop as part of university internships:- MySQL database management- Building business logic on backend side using PHP- Designing and building business logic on frontend side using React.js- Implementing e-commerce features

Bologna, Emilia-Romagna, Italy

Internships taken place abroad organized by technical school that included:- Fixing defects occuring in a hardware or software- Communication with other team members in english language