Experience

Work experience

1. July 2025 — March 2026

   Virtusa

   Senior Frontend Developer

   Maintained and modernised a mission-critical payments platform for one of the largest banks in the United States, operating within a regulated, high-availability environment with strict security and accessibility requirements.

   • Achieved 100% unit test code coverage across frontend modules, significantly reducing regression risk in production
   • Delivered UX/UI improvements based on design mocks and an internal component framework, enhancing user experience consistency
   • Implemented new features and translated complex business requirements into reliable, maintainable code
   • Enforced OWASP security standards throughout the development lifecycle
   • Resolved all WCAG 2.1 AA accessibility violations using AxeDev Tools, ensuring full regulatory compliance
   • Identified and eliminated SonarCloud code smells and security hotspots, improving overall code quality metrics
   • Handled production deployments and contributed to post-release monitoring and incident resolution
   • Authored and maintained technical documentation for onboarding and knowledge transfer
   • Developed and extended features using an internal microservices framework

2. February 2024 — June 2025

   NDA (Non-Disclosure Agreement)

   SeniorFrontend Developer | WordPress

   Contributed to a CFO-as-a-Service fintech platform serving EU clients, supporting financial planning, cash flow management, and project profitability analysis. Responsible for both custom React application development and WordPress site maintenance.

   • Developed and maintained scalable web applications for EU clients using React and no-code tooling
   • Drove UX quality initiatives that resulted in user interface satisfaction exceeding 80% in internal evaluations
   • Built and maintained WordPress websites, ensuring performance and content accuracy
   • Delivered no-code workflow improvements that increased operational efficiency across teams
   • Established and led a 3-person cross-functional team from inception, covering development, design, and project coordination roles

3. July 2023 — December 2023

   Woj.Tech Solutions

   SeniorFrontend Developer | React | NestJS

   Designed and developed a proof-of-concept SPA for a 3D printer slicing engine, integrating a Dockerised C++ backend with a React frontend. The system was architected for horizontal scalability via Kubernetes and AWS cloud infrastructure.

   • Architected and managed the full project lifecycle from technical planning through delivery
   • Designed Docker configurations and established CI/CD infrastructure for the slicing microservice
   • Built a React frontend connected to a NestJS backend API
   • Integrated Three.js to render interactive 3D model previews and G-code visualisations, enabling side-by-side pre/post-slice comparison
   • Implemented D3.js-based data visualisation dashboards for slicing summary analytics
   • Applied MUI component library for consistent, responsive layout design

4. November 2022 — May 2023

   ITMAGINATION

   Senior Fullstack Developer | Gaming & E-Sports | React | NestJS

   Served as a key contributor on a 20-person team delivering an MVP sports and e-sports betting frontend for a market with constrained mobile connectivity. Acted as the principal technical deputy to the frontend team lead.

   • Functioned as the right-hand of the frontend team lead, supporting architectural decisions and sprint planning
   • Delivered a visually engaging, high-performance frontend connected to an existing backend, aligned with current UX/UI standards
   • Single-handedly replaced one full-time developer while achieving a measured productivity increase of over 60% in working hours
   • Developed new features in Next.js using the latest React patterns and Recoil state management
   • Conducted rigorous code reviews, enforcing TypeScript standards and performance best practices
   • Optimised rendering performance through advanced React hooks and memoisation techniques
   • Implemented pixel-perfect UI from design specifications using Tailwind CSS
   • Delivered end-to-end solutions collaborating across more than two independent teams simultaneously

5. February 2020 — September 2022

   ITMAGINATION

   Fullstack Developer | Transportation & Logistics | React | NestJS

   Member of a 10-person engineering team building a route optimisation prototype for a US-based transportation logistics company. The system dynamically maximised cargo load efficiency for multi-stop vehicle routes.

   • Implemented complex features using React.js, Redux, and Redux-Observable for reactive data flows
   • Translated business requirements into well-structured, type-safe TypeScript components and services
   • Performed code reviews to maintain architectural consistency and code quality standards
   • Optimised web application performance using advanced React hooks and rendering strategies
   • Designed UI components in line with Material UI and custom SASS/CSS-in-JS design specifications
   • Built Backend-for-Frontend microservices to decouple frontend data requirements from core APIs
   • Scraped and normalised external data sources to enrich route planning datasets
   • Configured and updated CI/CD pipelines in Kubernetes, Terraform, and Octopus Deploy
   • Managed Docker container configurations for seamless CI/CD integration
   • Maintained up-to-date technical documentation throughout the project lifecycle

6. December 2018 — February 2020

   BFirst.Tech

   Frontend Developer | UX Support | R&D Electronics | Angular | Adobe XD

   Contributed to a cutting-edge R&D project leveraging machine learning to detect structural defects in steel pipes through acoustic signal analysis. The solution progressed from limited prototype accuracy to performance surpassing human expert benchmarks.

   • Designed and iterated UX/UI prototypes in Adobe XD, translating complex data workflows into intuitive interfaces
   • Implemented new product features and translated BDD requirements into testable frontend behaviour
   • Optimised application performance to handle high-frequency acoustic data visualisation
   • Conducted code reviews and enforced TypeScript quality standards across the codebase
   • Managed production deployments and maintained system stability in a regulated R&D environment
   • Integrated Microsoft MSAL for enterprise-grade user authentication
   • Configured and managed CI/CD deployment pipelines in GitLab
   • Developed advanced interactive data tagging and heatmap visualisations using Plotly.js and D3.js
   • Produced comprehensive software documentation to support ongoing R&D and knowledge transfer

7. October 2017 — December 2018

   UBS (external contractor)

   IT Support Technician | A3 Migration Team

   Engaged as an external contractor to support a large-scale hardware migration programme at UBS, transitioning legacy PC terminals to A3 thin-client workstations across the Kraków office.

   • Planned and executed workstation migrations for employees, minimising business disruption
   • Prepared and maintained Excel-based scheduling reports to coordinate hardware replacement across departments
   • Performed hardware installation, configuration, and maintenance for migrated endpoints

8. February 2017 — July 2017

   SOVA Accounting

   Frontend Developer | UX Support | Accounting | React

   Developed a secure, VPN-hosted ERP system for an accounting firm, built on ReactJS and Node.js. Responsible for both frontend implementation and UX design contributions.

   • Architected and developed a fully functional ERP system from the ground up using React.js
   • Built reusable, modular UI components aligned with an evolving design system
   • Managed application state with Redux, ensuring predictable and maintainable data flows
   • Specified and implemented business logic requirements in close collaboration with stakeholders
   • Established code review practices and authored unit tests to ensure software reliability
   • Created mock services to enable frontend development ahead of backend availability
   • Produced UX/UI wireframes and interactive mockups to validate design decisions early

Education

• Bachelor of Engineering in Electronics and Telecommunications

  AGH University of Science and Technology, Kraków

  Aug 2020 — Aug 2025