Hello, World!​I'm Matheus Leca

1 yr 5 mo

Unity 6 · C# · HTML · CSS · JavaScript · .NET · EF Core · PostgreSQL · Git · GitHub · GitHub Actions · Docker · DigitalOcean · Unity WebGL

• Led the development of a cross-platform safety-training simulator using Unity 6, C#, HTML, CSS, and JavaScript to train employees to identify workplace hazards through immersive 3D and 360° scenarios across web, mobile, desktop, and Meta Quest VR.
• Built an online training backend using .NET, EF Core, and PostgreSQL to manage training level creation and availability, sharing, leaderboards, and employee submissions with Clean Architecture.
• Automated deployments, database migrations, and testing using Git, GitHub, GitHub Actions, Docker, and DigitalOcean, applying Test-Driven Development to support reliable delivery.
• Engineered a custom Unity WebGL asset pipeline with automated asset splitting, parallel downloads, and client-side reassembly to overcome the 100 MB hosting limit and enable deployment of the full simulator.

1 yr 8 mo

Java · Spring · Spring Boot · HTML · CSS · JavaScript · Python · MySQL · MongoDB

• Improved students' understanding of software architecture and design patterns using Java, Spring, Spring Boot, HTML, CSS, and JavaScript through lectures and practical instruction on microservices and modular monoliths.
• Strengthened students' object-oriented programming and data structures skills using Python, MySQL, and MongoDB by providing individualized guidance and feedback on labs, assignments, and projects.
• Supported programming, databases, software design, architecture, and web development instruction across six undergraduate and graduate courses, helping students develop practical skills in these areas.

1 yr 7 mo

Java · Spring Boot · Angular · Kafka · Ionic · REST APIs · RabbitMQ · AWS · C# · .NET · HTML · CSS · JavaScript · Git · GitHub · GitHub Actions · Linux · Unix

• Led the development of an enterprise application using Java, Spring Boot, microservices, Angular, and Kafka to manage inventory and predict repositioning needs, streamlining government workflows and reducing operational costs while collaborating with stakeholders to refine requirements and deliver requested features.
• Digitized electricity-service operations using Ionic, REST APIs, RabbitMQ, and AWS to monitor service availability and requests and automate asynchronous data exchange, improving operational efficiency and supporting revenue growth.
• Developed and optimized a flood-monitoring application using C#, .NET, HTML, CSS, and JavaScript to collect real-time water-level data and support emergency-service responses.
• Improved application maintainability by applying SOLID principles and supported reliable delivery using Git, GitHub, and GitHub Actions for automated CI/CD and testing across Linux and Unix environments throughout the Software Development Life Cycle (SDLC), following Agile/Scrum practices and conducting code reviews.

1 yr 5 mo

React · Vue · jQuery · HTML · CSS · JavaScript · Node.js · Express · MongoDB · AWS · Git · GitLab

• Developed React, Vue, jQuery, HTML, CSS, and JavaScript workflows to digitize and streamline social-security accounting processes, reducing software costs by collaborating with stakeholders to refine functional and non-functional requirements.
• Enabled reliable cloud deployment using Node.js, Express, MongoDB, and AWS, supporting scalable application hosting, backend services, and persistent application data.
• Improved software reliability using Git, GitLab, Test-Driven Development, Agile/Scrum and code reviews throughout the SDLC, supporting consistent and reliable feature delivery.

1 yr 9 mo

JavaScript · TypeScript · Node.js · OpenAI Assistants API

• Enhanced undergraduate learning using JavaScript, TypeScript, Node.js, and OpenAI Assistants API to develop an AI tutoring application integrated with Discord, providing accessible, on-demand academic support.
• Strengthened students' understanding of Theoretical Foundations of Computer Science through individualized explanations, feedback, and academic guidance.
• Improved learning and assessment by delivering lectures, creating and grading coursework, and holding weekly office hours to explain technical concepts in plain language and provide individualized support.