Karel Ricardo

Software Engineer at Global Primex Europe Sp. z o.o.

November 2014 - Present - 11 yrs 11 mos - [Fintech, Online Payment Processing]

Warsaw, Poland

Responsibilities

• Served as long-term technical owner for frontend and mobile products across a fintech payment-processing platform, maintaining deep domain knowledge of payment operations, merchant workflows, reporting, and internal tools.
• Designed and maintained payment-management, transaction-reporting, and merchant-facing interfaces across web and mobile platforms using React, Next.js, Flutter with Firebase, AngularDart, and Symfony.
• Built new web apps with Vite, Tailwind CSS, TanStack Query, React Hook Form and Playwright tests.
• Converted business, compliance, and operational payment requirements into scalable frontend architectures, user flows, and maintainable implementation patterns.
• Built and evolved GitLab CI/CD pipelines, deployment workflows, and release practices for fintech web and mobile applications.
• Improved engineering quality through Gerrit code reviews, frontend standards, debugging practices, mentoring, and technical hiring support.

Key accomplishments

• Led progressive modernization of fintech frontend and mobile systems from legacy stacks toward React, Next.js, and Flutter while preserving payment-platform continuity.
• Improved maintainability and developer experience by standardizing frontend patterns, CI/CD automation, deployment workflows, and review practices across payment products.
• Delivered payment operations, reporting, and merchant workflow improvements by connecting frontend architecture with backend, operations, compliance, and QA requirements.
• Recognized as Employee of the Year for technical ownership, fintech platform knowledge, and sustained engineering impact.

Frontend Developer at ThoughtWire

January 2023 - April 2023 - 4 mos - [IT Services and IT Consulting]

Toronto, Canada

Responsibilities

• Contributed to reusable UI component systems and shared internal packages using React, TypeScript, and styled-components within a distributed engineering team.
• Aligned component APIs, styling conventions, and implementation quality to improve frontend consistency across internal projects.

Key accomplishments

• Improved shared component reusability and frontend consistency across distributed projects by contributing to shared package quality and maintainability.

Software Engineer at Universidad de las Ciencias Informáticas

September 2013 - November 2014 - 1 yr 3 mos - [University]

Havana, Cuba

Responsibilities

• Developed a Symfony web administration system for digital TV transmission workflows, replacing manual coordination with a dedicated operational interface.
• Implemented data management, administrative interfaces, and workflow-oriented functionality within a structured university production environment.

Key accomplishments

• Built a strong foundation in Symfony, web application architecture, and disciplined software delivery that supported later fintech and product engineering roles.