Guilherme Souza

Guilherme Souza

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ABOUT ME
Passionate about bridging software engineering rigor with data-driven
Passionate about bridging software engineering rigor with data-driven

Senior Software Engineer with 5+ years of experience building scalable, high-availability systems across enterprise and cloud-native environments.

I specialize in full-stack development, system architecture, and designing reliable APIs and services that support high-load transactional platforms.

Currently working with modern cloud technologies, developing distributed services and responsive applications using Node.js, TypeScript, React, and Kubernetes, while improving CI/CD pipelines, testing practices, and overall platform reliability.

Previously at SMS group, I designed and maintained enterprise systems used in global industrial operations using .NET, C#, and Oracle PL/SQL, focusing on performance optimization and large-scale transactional workloads.

At Vetta, I led the design of a core software module, improved system reliability, and helped enforce clean architecture practices through code reviews and CI/CD processes.

I hold a Master’s degree in Data Science with a focus on AI/ML, which strengthens my ability to approach complex engineering challenges from both software and data perspectives.

Tech Stack: Node.js • TypeScript • React • Kubernetes • REST APIs • Microservices • PostgreSQL • Firestore • Docker • CI/CD • .NET • C# • PL/SQL • Software Architecture

Brasilia (-03:00)
Joined May 2025
EXPERTISE
5 years experience
5 years experience
3 years experience
3 years experience

REVIEWS FROM CLIENTS

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SOCIAL PRESENCE
GitHub
TaskManager.Api
C#
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sillentInstaller
C#
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Stack Overflow
125 Reputation
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8
EMPLOYMENTS
Senior Software Engineer
Scratch Financial
2025-12-01-Present

Senior full-stack engineer focused on designing and building scalable, high-availability systems for transactional platforms and moder...

Senior full-stack engineer focused on designing and building scalable, high-availability systems for transactional platforms and modern cloud-native environments.

🔹 Architect and develop scalable full-stack applications supporting high-load systems

🔹 Build and maintain backend services and APIs (REST / GraphQL) using Node.js and TypeScript

🔹 Develop responsive front-end applications with React for customer-facing and internal tools

🔹 Design modular, fault-tolerant components using event-driven and Pub/Sub patterns

🔹 Contribute to platform modernization, migrating services to Kubernetes-native infrastructure

🔹 Design and maintain SQL and NoSQL data models ensuring performance and data integrity

🔹 Improve CI/CD pipelines, automated testing, and deployment workflows

🔹 Collaborate with product managers, designers, and engineers to deliver scalable solutions

🔹 Conduct code reviews and technical mentorship within the engineering team

🔹 Support production systems, incident response, and postmortem analysis

SQL
Node.js
Firebase
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SQL
Node.js
Firebase
React
Google Cloud Platform
Kubernetes
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Software Developer
SMS Group
2024-05-01-2026-02-01

I engineer a cutting-edge Yard Management System that optimizes steel plant logistics across Europe and Asia. My core contributions in...

I engineer a cutting-edge Yard Management System that optimizes steel plant logistics across Europe and Asia. My core contributions include:

🔹 System Architecture: Developing a C# microservice backend to orchestrate real-time coordination between L1 automation systems (PLCs) and L2 MES platforms, enabling seamless material flow tracking

🔹 Industrial Integration: Designing robust interfaces for PLC communication and MES data synchronization, ensuring millisecond-level precision in production environments

🔹 Database Optimization: Leveraging Oracle PL/SQL to manage high-throughput transactional data from cranes, transporters, and inventory systems

🔹 Global Deployment: Delivering scalable solutions adapted to operational workflows in multinational clients.

C#
Node.js
Entity Framework
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C#
Node.js
Entity Framework
TypeScript
Oracle PL/SQL
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Fullstack Developer
Vetta SMS Group
2022-05-01-2024-05-01

Driving scalable solutions for enterprise software

🔹Technical Leadership: Spearheaded the design and development of a core mod...

Driving scalable solutions for enterprise software

🔹Technical Leadership: Spearheaded the design and development of a core module for the company’s flagship product, collaborating with a cross-functional global team to deliver a solution that enhanced system scalability and reliability

🔹Production Optimization: Conducted root cause analysis on critical production issues, implementing preventative measures that significantly reduced system downtime and improved operational stability

🔹Code Quality Advocate: Led bi-weekly code review sessions, enforcing adherence to SOLID principles, design patterns, and best practices, resulting in cleaner, more maintainable codebases

🔹Project Management: Delivered multiple high-priority projects on time by effectively managing tasks, resources, and stakeholder expectations in a fast-paced Agile environment

Key Contributions:

✅ Improved system performance and reliability through optimized software design

✅ Reduced downtime by proactively addressing production bottlenecks

✅ Ensured codebase integrity through rigorous review processes

✅ Balanced competing priorities to meet tight deadlines without compromising quality

C#
Node.js
Oracle PL/SQL
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C#
Node.js
Oracle PL/SQL
React
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