Open to opportunities

Lucas Theo

@lucastheo

Message

Backend-focused software engineer with hands-on experience in data-intensive systems.

Brazil

Message

What I'm looking for

I am looking for remote opportunities that foster collaboration, innovation, and growth.

I am a dedicated Backend Developer with over 4 years of experience in backend and full-stack development. My journey began with a Bachelor's Degree in Computer Science, followed by a Postgraduate program in Software Engineering. I have a strong passion for clean architecture and pragmatic problem-solving, which has driven my success in delivering scalable and high-performance systems.

Currently, I work at BigDataCorp as a Development Analyst, where I develop and maintain RESTful APIs using Python (FastAPI) and C# (.NET Core). My role involves optimizing data ingestion and transformation services, ensuring data integrity across distributed systems, and participating in Agile ceremonies. I take pride in my ability to implement asynchronous processing and caching layers, which have improved API response times by over 40%.

Previously, I served as a Full Stack Developer at ACCO Brands (Tilibra), where I developed internal systems using Oracle and Microsoft SQL Server. My contributions included refactoring legacy code to reduce system downtime and integrating dashboards for real-time performance tracking. I am fluent in English and currently seeking international remote opportunities to further my career.

Experience

Work history, roles, and key accomplishments

Current

Development Analyst

Current

BigDataCorp

Oct 2024 - Present (10 months)

Developed and maintained RESTful APIs using Python (FastAPI) and C# (.NET Core) to power real-time data ingestion and transformation services. Integrated PostgreSQL and MongoDB databases, optimizing indexing strategies and ensuring data integrity across distributed systems.

Python fastAPI C .NET Core PostgreSQL MongoDB Agile Pytest xUnit ETL

Full Stack Developer

ACCO Brands (Tilibra)

Jan 2021 - Present (4 years 7 months)

Developed and maintained internal systems using Oracle11g/19c and Microsoft SQL Server, ensuring data integrity and high performance for enterprise applications. Refactored legacy Java/PLSQL code, reducing system downtime by 65%.

Microsoft SQL Server Java Pl SQL JavaScript PHP InforLN Infor LN

Education

Degrees, certifications, and relevant coursework

Pontifical Catholic University of Rio de Janeiro (PUC-Rio)

Postgraduate in Software Engineering, Software Engineering

2025 -

Currently pursuing a postgraduate degree in Software Engineering, focusing on advanced concepts and practices in software development. This program enhances my expertise in building robust and scalable software solutions.

USC - Brazil

Bachelor’s Degree in Computer Science, Computer Science

2019 - 2022

Completed a Bachelor’s Degree in Computer Science, gaining a strong foundation in computer science principles. This included coursework in algorithms, data structures, and software development methodologies.

UNESP - ETEC Isaac Portal Roldán

Technical Degree in Electronics, Electronics

2014 - 2016

Obtained a Technical Degree in Electronics, providing a solid understanding of electronic systems and hardware. This program developed my skills in technical problem-solving and practical application of electronic principles.