Leonan Costa

I’m a proactive Senior Web Developer with extensive experience building scalable, secure, and high-performance web applications. I specialize in full-stack development, working seamlessly with React, Node.js, Express, and cloud platforms like AWS, Azure, and GCP.

I have a proven track record of leading projects from concept to deployment, optimizing system performance, and implementing CI/CD pipelines for faster, reliable releases. Whether it’s designing modern front-end interfaces, building robust back-end APIs, or integrating complex third-party services, I bring a solution-oriented mindset to every project.

What I offer:
- Modern React/Next.js web applications with responsive design
- RESTful and GraphQL API development
- Cloud deployment and infrastructure automation (AWS, Docker, Kubernetes)
- Database design and optimization (MongoDB, MySQL, PostgreSQL)
- Performance optimization and bug fixing
- Mentoring junior developers and project management

I’m looking to collaborate with clients who value quality code, reliability, and clear communication. Let’s build something great together!