Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I'm Cardinal Ncube, a passionate Fullstack Developer and AI Systems Architect based in Warsaw, Poland. With over 5 years of experience, I've had the privilege to work on scalable, high-performance applications for Fortune 500 companies and fintech startups. I specialize in React ecosystem, Node.js, and cloud architecture, with a growing focus on AI-driven development tools. I enjoy leading technical initiatives that optimize system performance and reliability, while mentoring junior developers. Whether it's implementing real-time fraud detection, architecting microservices, or designing AI-to-code translation systems, I strive to deliver accessible and innovative software solutions that impact millions of users daily.…Hi, I'm Cardinal Ncube, a passionate Fullstack Developer and AI Systems Architect based in Warsaw, Poland. With over 5 years of experience, I've had the privilege to work on scalable, high-performance applications for Fortune 500 companies and fintech startups. I specialize in React ecosystem, Node.js, and cloud architecture, with a growing focus on AI-driven development tools. I enjoy leading technical initiatives that optimize system performance and reliability, while mentoring junior developers. Whether it's implementing real-time fraud detection, architecting microservices, or designing AI-to-code translation systems, I strive to deliver accessible and innovative software solutions that impact millions of users daily.

Cardinal Ncube

Full Stack Developer, Developer, Web Developer, +4





Hi, I'm Cardinal Ncube, a passionate Fullstack Developer and AI Systems Architect based in Warsaw, Poland. With over 5 years of experience, I've had the privilege to work on scalable, high-performance applications for Fortune 500 companies and fintech startups. I specialize in React ecosystem, Node.js, and cloud architecture, with a growing focus on AI-driven development tools. I enjoy leading technical initiatives that optimize system performance and reliability, while mentoring junior developers. Whether it's implementing real-time fraud detection, architecting microservices, or designing AI-to-code translation systems, I strive to deliver accessible and innovative software solutions that impact millions of users daily.…Hi, I'm Cardinal Ncube, a passionate Fullstack Developer and AI Systems Architect based in Warsaw, Poland. With over 5 years of experience, I've had the privilege to work on scalable, high-performance applications for Fortune 500 companies and fintech startups. I specialize in React ecosystem, Node.js, and cloud architecture, with a growing focus on AI-driven development tools. I enjoy leading technical initiatives that optimize system performance and reliability, while mentoring junior developers. Whether it's implementing real-time fraud detection, architecting microservices, or designing AI-to-code translation systems, I strive to deliver accessible and innovative software solutions that impact millions of users daily.

Available to hire

Hi, I’m Cardinal Ncube, a passionate Fullstack Developer and AI Systems Architect based in Warsaw, Poland. With over 5 years of experience, I’ve had the privilege to work on scalable, high-performance applications for Fortune 500 companies and fintech startups. I specialize in React ecosystem, Node.js, and cloud architecture, with a growing focus on AI-driven development tools.

I enjoy leading technical initiatives that optimize system performance and reliability, while mentoring junior developers. Whether it’s implementing real-time fraud detection, architecting microservices, or designing AI-to-code translation systems, I strive to deliver accessible and innovative software solutions that impact millions of users daily.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Advanced

Work Experience

Senior Fullstack Developer at Visa Inc

December 1, 2023 - June 16, 2024

Key contributor to Visa's cutting-edge payment platform using React, Next.js, TypeScript, and Node.js in Agile. Architected robust, scalable solutions with micro-frontend architecture, secure ADA-compliant payment flows, and a high-throughput Node.js API for real-time fraud detection. Managed frontend state with Redux and built resilient fraud analysis workflows using Docker and Kubernetes, ensuring zero-downtime deployments and offline-first capabilities.

Senior Frontend Developer at GFT (Bonify)

January 1, 2023 - January 31, 2024

Architected and developed real-time financial dashboard features with React, Next.js, TypeScript, and WebSockets. Built interactive financial charts using D3.js and React. Led cross-platform mobile development with React Native, integrating biometric authentication. Designed state management using Redux Toolkit and RTK Query, and implemented a comprehensive testing strategy achieving 95% coverage.

AI Systems Architect at Freelancer

June 1, 2023 - August 31, 2023

Specialized in architecting AI-driven systems bridging natural language and functional code. Built modular AI systems using Node.js, React, Next.js, and GraphQL with MongoDB. Designed prompt engineering pipelines using chain of thought reasoning. Developed frameworks for AI agent orchestration including the "Crew AI" project, leveraging advanced LLMs such as Claude Sonnet 3.5 and GPT-4. Led development of component generation systems with 90% translation accuracy from design to code.

Senior Backend Node.js Developer at GFT (Alrahji Bank)

June 1, 2021 - December 31, 2022

Designed and implemented scalable backend infrastructure for a major Middle Eastern bank with Node.js GraphQL API gateway integrating 20+ microservices. Created a robust real-time notification system using WebSockets and Redis. Optimized API performance with strategic rate limiting, caching, and DataLoader, reducing query resolution times by 70%. Contributed to sharding strategies for high-volume transaction handling.

Senior React Developer at Mobica

August 1, 2020 - July 31, 2021

Focused on frontend architecture and mobile development with React and React Native. Contributed to micro-frontend architecture using single-spa. Developed a design system with 100+ reusable components in Storybook. Built React Native app with offline-first capabilities powered by Node.js and GraphQL backend. Implemented secure biometric authentication and optimized app performance with virtualized data and bundle size reduction.

Developer at Platforms Smart Connect

January 1, 2016 - November 30, 2019

Contributed to architecture and implementation of scalable e-learning platform using React and Node.js. Worked on microservices handling over 1M daily requests and Agile workflows. Developed real-time collaboration features with WebSocket, implemented adaptive bitrate video streaming, and created an automated grading system using machine learning algorithms.

Fullstack Developer at Visa Inc

December 1, 2023 - June 9, 2024

Led development of enterprise payment platform serving millions of transactions daily, focusing on security, scalability, and fraud prevention. Architected micro-frontend system using Webpack Module Federation allowing independent deployment across teams. Built real-time fraud detection API using Node.js, GraphQL, and MongoDB with enterprise-grade uptime. Implemented ADA-compliant payment flows with Next.js and React 18 Server Components enhancing accessibility and experience. Designed containerized microservices on Kubernetes (EKS) with zero-downtime deployments, reducing deployment time and increasing reliability.

Fullstack Developer at GFT (Bonify)

January 1, 2023 - December 31, 2023

Created interactive financial dashboards with React, Next.js, and D3.js enabling real-time data visualization on a Kafka event-streaming trading platform. Built a cross-platform mobile app with React Native and GraphQL API maintaining a single codebase for iOS and Android with high app store ratings. Implemented serverless architecture using AWS Lambda for data processing and biometric authentication integration.

AI Systems Architect at Freelance

June 1, 2023 - August 31, 2023

Architected AI-to-code translation system using Node.js and GraphQL achieving high accuracy converting natural language to functional React applications. Designed prompt engineering pipeline with chain-of-thought reasoning significantly improving AI-generated code quality. Developed agentic AI framework using Crew AI enabling automated workflow orchestration for development teams.

Fullstack Developer at GFT (Alrajhi Bank)

June 1, 2021 - December 31, 2022

Designed GraphQL API gateway unifying multiple microservices with Node.js and MongoDB, significantly reducing API response times. Built real-time notification system with WebSockets, Kafka message queues, and AWS Lambda functions supporting high-throughput, low-latency communication. Implemented caching layer with Redis and AWS Lambda reducing database load and improving system performance.

Fullstack Developer at Mobica

August 1, 2020 - July 31, 2021

Implemented micro-frontend architecture with single-spa framework enabling independent feature development across teams. Created a comprehensive design system with Storybook including reusable components to accelerate development velocity. Built offline-first React Native app with GraphQL backend ensuring robust offline capabilities and uninterrupted user experience.

Full-Stack Developer at Smart Connect Platforms

January 1, 2016 - November 30, 2019

Developed e-learning platform using React and Node.js microservices architecture supporting high-volume daily requests. Implemented real-time collaboration features using WebSocket for live classroom experience. Built video streaming solution with adaptive bitrate optimizing delivery for varying network conditions.