Leonardo Ferreira

Over the past five years on Upwork, I’ve successfully delivered 45+ projects with a 100% Job Success Score, earning nearly $300K while helping clients across industries build robust, scalable solutions. My expertise spans full-stack web development, data science, backend engineering, and data visualization, with a strong focus on Plotly Dash, FastAPI, Bash scripting, machine learning, and end-to-end deployment.

I specialize in building solutions from scratch—transforming ideas into fully functional platforms. My work includes:

• Interactive Dashboards & Data Apps: Developed advanced Plotly Dash applications for real-time analytics, financial modeling, and business intelligence.
• Backend & API Development: Built high-performance FastAPI backends, RESTful APIs, and automation scripts for seamless data processing.
• Data Science & Machine Learning: Engineered predictive models, data pipelines, and visualizations to drive data-driven decision-making.
• Deployment & DevOps: Configured cloud deployments (AWS, GCP, Heroku) and optimized infrastructure for scalability.

Clients consistently praise my problem-solving skills, clean code, and commitment to deadlines:
"Exceptional developer—transformed our complex requirements into a flawless solution!"
"Reliable, skilled, and highly professional. Will hire again!"

With a track record of exceeding expectations, I bring deep technical expertise and a client-focused approach to every project. Let’s build something great—check my Upwork profile for more:

🚀 Upwork Profile