Leonardo Ferrari

Email

leonari.dev@gmail.com
Languages

English 90%

Spanish 60%
Location
São Paulo, São Paulo, Brazil

About me

"Free curiosity is a greater encouragement to learning than frightened compulsion." - Augustine of Hippo

I grew up fascinated by how technology shapes our world, a curiosity that led me to finish my degree at UNICAMP in 2022. I’ve since moved into a postgraduate program for Data Engineering and Architecture while growing from an intern into a Software Engineer at Itaú.

My work focuses on building scalable cloud and back-end systems with C#, Python, and AWS, turning complex challenges into streamlined, data-driven solutions. I’m passionate about using automation and innovation to improve existing systems and deliver high-quality code that makes a real impact.

I hope you find what you search here, along with more info about some projects and my portfolio

Favs skills

Back-end Development

Specialized in .NET/C# and RESTful APIs for scalable systems.
Python Automations

Scripting and automations to streamline workflows and reduce costs.
Data Engineering

Building efficient pipelines with Kafka, Spark, and Big Data tools.
Cloud Solutions

Designing and implementing AWS architectures and cloud services.
Analytics

Advanced SQL and metrics for data-driven decision making.
Data Visualization

Creating impactful dashboards with Grafana and tools for insights.

Testimonials

Alfredo Albélis - Conect Art

During a freelance project, I had the pleasure of collaborating with Leonardo. He demonstrated a strong mastery of both PHP and JavaScript, along with a deep understanding of object-oriented programming principles, which proved invaluable given the project's MVC architecture. His collaborative spirit and proactive approach significantly contributed to the project's highly productive development process.

Resume

Education

UNICAMP - State University of Campinas
2017 — 2022
Bachelor in Information Systems.
IGTI - Institute of Management and Information Technology
2023 — 2025
Postgraduate Course in Data Engineering and Architecture.

Experience

Software Engineer Mid | Itaú Unibanco
January 2024 — Current
- Modernized the legal evidence capture pipeline, reducing operational costs by over 400% through automation and optimization.
- Developed end-to-end data pipelines, including data modeling, which increased pipeline processing speed by up to 300% using Kafka, Spark and AWS.
- Designed and implemented solution architectures for both cloud (AWS) and on-premises environments.
- Ensuring code quality, reliability, and maintainability through unit test implementation
- Created REST APIs to facilitate seamless data integration and communication between systems.
Software Engineer Associate | Itaú Unibanco
February 2021 — December 2023
- Developed and maintained projects using C# (.NET/.NET Core), Python, Kafka, and AWS, ensuring scalable and efficient solutions.
- Integrated and streamlined data workflows using Alteryx, improving data accessibility and processing efficiency.
- Utilized GIT with CI/CD pipelines for seamless deployment and version control.
Software Engineer Internship | Itaú Unibanco
January 2020 — February 2021
- Designed and developed internal websites, and RESTful APIs, using Node.js, TypeScript, and Python, enabling seamless integration and data exchange between systems.
- Created automation scripts using Python to streamline workflows across various departments.
- Developed chatbots on ServiceNow, improving user interaction and automating processes.
- Generated and maintained analytical reports on chatbot performance, including metrics such as user satisfaction, conversation abandonment rates, enabling data-driven decision-making.