Joel Zaky
RefreshCode
2
Languages
6
years of professional experience
Results-driven Senior Full-Stack Software Engineer with 7+ years of experience in developing and deploying web and mobile applications. Expertise in AI product development utilizing Large Language Models and Retrieval-Augmented Generation. Specializes in designing scalable architectures and enhancing application performance, with notable achievements in reducing feature development time and improving AI answer accuracy.
Work History
Senior Software Engineer
1 Year 8 Months- Led the architecture, development, and deployment of production-grade web applications using Next.js, React, TypeScript, and Node.js.
- Designed scalable frontend and backend systems while maintaining high standards for code quality and release stability.
- Engineered AI-powered features such as prompt engineering, streaming responses, and tool calling using OpenAI and Claude APIs to enhance user experience.
- Created cross-platform mobile applications with React Native and Expo, providing seamless native experiences for iOS and Android from a unified codebase.
- Established CI/CD pipelines with over-the-air (OTA) updates, facilitating efficient and timely mobile releases.
- Architected reusable shared component libraries that reduced feature development time by 30%.
- Developed cross-platform mobile applications using React Native and Expo, delivering native experiences for both iOS and Android from a shared codebase.
- Implemented CI/CD pipelines with over-the-air (OTA) updates to streamline mobile releases.
Full-Stack Developer
1 Year 10 Months- Enhanced and maintained scalable web applications with React.js, Next.js, Node.js, and TypeScript, improving user experience.
- Designed and executed RESTful APIs and backend services supporting production applications.
- Collaborated with designers, product managers, and backend engineers to ship customer-focused features, reducing average delivery time by 20%.
- Optimized code and handled data efficiently to enhance application performance and reliability.
- Conducted code reviews, debugging, testing, and deployment to ensure high software quality and stability.
Frontend Developer
1 Year 8 Months- Built responsive, interactive user interfaces using React, JavaScript, and TypeScript.
- Created reusable UI components and applied modern styling solutions with CSS, SCSS, and CSS-inJS to enhance user experience.
- Partnered with backend developers to integrate APIs, boosting application performance and user interaction.
- Streamlined frontend rendering and ensured clean, reusable component architecture for better maintainability.
- Collaborated with backend developers to integrate APIs and improve overall application performance.
Education
Bachelor of Computer Science (BCompSc) - Software Engineering
Skills
Frontend: React.js
Next.js
TypeScript
JavaScript
HTML5
CSS3
SCSS
Tailwind CSS
Backend: Node.js
Express.js
Python
REST APIs
GraphQL
AI & Machine Learning: OpenAI API
Claude API
Prompt Engineering
Tool Calling
Streaming Responses
Information retrieval
Ollama
Embeddings
Vector Databases
Cross-Platform Development
Cloud & DevOps: AWS
Docker
CI/CD
Git
GitHub Actions
API development
Core Competencies: Full-Stack Web Development
AI Application Development
Large Language Models (LLMs)
Retrieval-Augmented Generation (RAG)
Software Architecture
API Design
Performance Optimization
Mobile Application Development
Cloud Infrastructure
Agile Development
CI/CD
Technical Leadership
Languages
Dutch
Native or Bilingual
English
Full Professional
Timeline
Senior Software Engineer
RefreshCode
08.2023 - 04.2025Read More
Full-Stack Developer
Altitude
08.2021 - 06.2023Read More
Frontend Developer
Studio Bureau
09.2019 - 05.2021Read More
Windesheim University of Applied Sciences
Bachelor of Computer Science (BCompSc) from Software Engineering
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