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Hi, I'm Leonard Alimadhi, a frontend developer with more than 4 years of experience. I have a deep understanding of JavaScript, React Native, and I am familiar with most JS frameworks. I have developed and integrated mobile apps with React Native and Flutter, and built single- and multi-page web applications. I am fluent in HTML and CSS and I thrive both independently and in teams, with strong communication and disciplined work habits. Teamwork is a hobby for me, and I enjoy learning from others to deliver polished, user-friendly interfaces and scalable frontend solutions.…Hi, I'm Leonard Alimadhi, a frontend developer with more than 4 years of experience. I have a deep understanding of JavaScript, React Native, and I am familiar with most JS frameworks. I have developed and integrated mobile apps with React Native and Flutter, and built single- and multi-page web applications. I am fluent in HTML and CSS and I thrive both independently and in teams, with strong communication and disciplined work habits. Teamwork is a hobby for me, and I enjoy learning from others to deliver polished, user-friendly interfaces and scalable frontend solutions.

Leonard Alimadhi

Front-End Developer, Web Developer, Full Stack Developer, +2

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Hi, I'm Leonard Alimadhi, a frontend developer with more than 4 years of experience. I have a deep understanding of JavaScript, React Native, and I am familiar with most JS frameworks. I have developed and integrated mobile apps with React Native and Flutter, and built single- and multi-page web applications. I am fluent in HTML and CSS and I thrive both independently and in teams, with strong communication and disciplined work habits. Teamwork is a hobby for me, and I enjoy learning from others to deliver polished, user-friendly interfaces and scalable frontend solutions.…Hi, I'm Leonard Alimadhi, a frontend developer with more than 4 years of experience. I have a deep understanding of JavaScript, React Native, and I am familiar with most JS frameworks. I have developed and integrated mobile apps with React Native and Flutter, and built single- and multi-page web applications. I am fluent in HTML and CSS and I thrive both independently and in teams, with strong communication and disciplined work habits. Teamwork is a hobby for me, and I enjoy learning from others to deliver polished, user-friendly interfaces and scalable frontend solutions.

Available to hire

Hi, I’m Leonard Alimadhi, a frontend developer with more than 4 years of experience. I have a deep understanding of JavaScript, React Native, and I am familiar with most JS frameworks. I have developed and integrated mobile apps with React Native and Flutter, and built single- and multi-page web applications.

I am fluent in HTML and CSS and I thrive both independently and in teams, with strong communication and disciplined work habits. Teamwork is a hobby for me, and I enjoy learning from others to deliver polished, user-friendly interfaces and scalable frontend solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Work Experience

Developer at Sidi Education

October 1, 2021 - October 26, 2025

Contributed to design and development of an e-learning platform, achieving over 10k visitors in the first 5 months and up to 100 course enrollments. Built UI features including a real-time chat to facilitate user communication. Developed a hierarchical user system with varied access levels and an admin panel.

Developer at Deloitte

October 1, 2021 - Present

Led projects within timeline and provided real-time updates on project status. Delivered demos and milestone updates to clients. Helped define coding best practices and established code-review rules. Provided guidance and technical support within the squad and across teams. Refactored, fixed, and created reusable code and libraries to streamline development. Implemented and tested new tech stacks to improve performance and ease of adoption. Troubleshot and upgraded systems, incorporating new technologies to boost app performance. Ensured UI/UX feasibility and delivered pixel-perfect, responsive interfaces. Worked with web and mobile animations, SSE and WebSocket communications, and rendering strategies (CSR, SSR, SSG), along with state management and data fetching. Used CSS, CSS-in-JS, and SCSS libraries. Integrated enterprise authentication (QR code, OAuth2.0) and SMS notification systems. Developed new UI features for a CMS, reviewed client docs, and designed frontend solutions. Help