Guilherme Eugenio de Sá

Software developer Intern @ TOTVS

About

I currently work as a Software Engineering Intern at TOTVS — Brazil's largest technology company — where I develop and maintain critical corporate systems using AdvPL, TLPP, and Java. Day-to-day, I work with REST API integration, SQL data modeling and querying, and mobile development with Flutter. My Software Engineering degree gives me the theoretical foundation; the internship gives me reality: systems running in hundreds of Brazilian companies, real deadlines, code that has to work. I'm looking to deepen my career in backend development and scalable system architecture. My Google Cloud certifications are part of my planned expansion into cloud computing. Open to: conversations about internships and junior developer positions, especially at companies working with Java, ERP systems, or B2B SaaS solutions. 📩 Send me a message — I always reply.

Country

City

Brazil

Industry

Transportation/Trucking/Railroad

Skill

Java, Desenvolvimento de back-end, API REST, Sistemas ERP, Metodologias ágeis no desenvolvimento de aplicações, Programação orientada a objetos (POO), Desenvolvimento de aplicativos móveis, Computação em nuvem, Google Cloud Platform (GCP), Desenvolvimento full stack, Git, Flutter, SQL, Advpl, TLPP, Engenharia, Resolução de problemas, Computação, Comunicação, Capacidade de organização

Experience

Software developer Intern

TOTVS

2026-2 - Present · 8 mos

São José dos Campos, São Paulo, Brazil

I work on the development and maintenance of corporate systems using TOTVS proprietary languages: AdvPL and TLPP — niche technologies in high demand within Brazil's ERP ecosystem. Responsibilities and activities: • Feature development and bug fixing in ERP systems using AdvPL and TLPP • Creation and integration of REST APIs for inter-system communication • SQL data modeling and manipulation • Mobile development with Flutter • Java development in backend and system integration contexts Tech stack: AdvPL · TLPP · Java · Flutter · REST APIs · SQL · FullStack Development · ERP Systems

Ajudante de carpintaria

ETR Woodwork Installation | Millwork Installation

2024-2 - 2024-5 · 4 mos

Work experience abroad (New Orleans, USA) at a company specializing in carpentry and millwork installations. A period marked by the development of cross-cultural adaptability, professional communication in English, and resilience in an international work environment. Highlights: US work experience · professional English communication · multicultural adaptation · discipline and proactivity

Education

Estácio

Computer Software Engineering

2024-7 - 2028-6 · 4 yrs

Degree focused on the fundamentals of software development, system architecture, data structures, relational databases, and requirements engineering. Strong foundation in object-oriented programming, agile methodologies (Scrum/Kanban), and software quality practices. Highlighted subjects: Algorithms and Data Structures · Databases · Object-Oriented Programming · Requirements Engineering · Computer Networks Practical complement: simultaneous internship at TOTVS — Brazil's largest tech company — where I apply classroom concepts daily to real corporate projects.