About James
Polish
Native or bilingual
English
Fluent
Experience
- ObodoSenior Front-End DeveloperNovember 2022 - Today (3 years and 7 months)• Developed several AI-powered applications, integrating advanced GPT models for enhanced functionality and user experience.• Pioneered the frontend development from the ground up using React and Next.js, achieving a 20% speed improvement by implementing global state management solutions like Redux and Context API.• Designed and implemented a data-driven structure for prompt engineering, ensuring 90% alignment with user requirements.• Engineered a flexible and scalable frontend architecture, along with the necessary APIs to support seamless integration.• Translated design concepts and wireframes into high-quality, production-ready code.• Conducted thorough code reviews to maintain high standards of code quality and efficiency.• Continuously stayed abreast of the latest industry trends and technologies, ensuring that applications remain modern, competitive, and effective.
- NorthdexSenior Front-End DeveloperJanuary 2019 - November 2022 (3 years and 10 months)➢ Developed a blockchain centralized exchange (CEX) application from the groundup using Vue.js, adhering to component-based architecture for scalability andmaintainability.➢ Collaborated closely with backend teams to design and implement APIs forseamless data fetching and manipulation.➢ Integrated real-time communication features using WebSocket, and developeddynamic trading charts leveraging the TradingView library.➢ Wrote clean, well-structured code that adhered to best practices and codingstandards, resulting in a 20% improvement in development efficiency and easeof mentoring.➢ Monitored and optimized frontend performance, achieving a 15% improvementin speed and responsiveness.➢ Troubleshot interface software issues and debugged application code to ensuresmooth and reliable functionality
- Sii SwedenSenior Front-End DeveloperApril 2014 - March 2016 (1 year and 11 months)• Successfully led multiple projects, consistently meeting 100% of client requirements and delivering exceptional results.• Leveraged advanced frontend technologies, including React, Vue, and Angular, to develop intuitive applications, incorporating UI/UX frameworks like Tailwind, Material UI, and employing test-driven development practices using Storybook.• Designed and built comprehensive dashboards using data visualization tools like Chart.js and D3.js, enhancing analytics capabilities by 30%.• Adhered to security best practices, ensuring the protection of user data with 100% compliance.• Implemented a streamlined CI/CD workflow, resulting in a 20% improvement in development efficiency and business management processes.• Continuously monitored and logged application performance to enable effective analysis and proactive issue resolution.
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Education
- Bachelor's degree ofUniversity of Warsaw2014Bachelor's degree of