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Achievement: Pull SharkAchievement: YOLO

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Achievement: Pull SharkAchievement: YOLO

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itswillian/README.md
Willian Pacheco Silva. Tech Lead in software engineering: full stack, cloud and DevOps. Computer Engineer with a master's from UFES. Builds software from design to production. Founder of Loomis. Particles gather around the optimum of a contour map.

GitHub​LinkedIn​Email​Portfolio​Lattes​ORCID

I'm a software engineer who works full stack and full cycle, from architecture and back-end to front-end and cloud infrastructure, with attention to scalable systems and clear engineering standards.

I started programming in 2015, at 14, studying on my own, and then took the SENAI technical course. I completed Computer Engineering at UFES in 2023 and a Master's in Electrical Engineering in 2026, with a dissertation on AI and sensor fusion with FBG sensors and four published papers in machine learning and optimization. Along the way I grew into a technical leadership role. Today I run my own technology company, Loomis, and occasionally teach mathematics, programming and music.

The full story, publications and projects are in my portfolio.

Back-end and cloud. Services and apps on AWS, in Python, Node.js, React and Next.js: Linux servers on EC2, microservices on ECS Fargate, provisioning with Terraform and CloudFormation. Docker, CI/CD and APIs with FastAPI and Swagger. Git on GitHub and GitLab. Technologies: Python, Node.js, FastAPI, PostgreSQL, Docker, Linux, AWS, CloudFormation, Terraform, CI/CD, GitHub, GitLab. Machine learning and research. Applied research in sensor fusion with FBG sensors, using neural networks, LLMs and time series. In software development, I use LLMs and AI agents, with Claude and Codex, for implementation and review. Technologies: PyTorch, TensorFlow, Keras, OpenAI Codex, Claude. Front-end. Interfaces in React, Next.js, SvelteKit and TypeScript, with HTML, CSS and Sass, and design in Figma. Projects include a Pomodoro timer, a WhatsApp Web clone, a product catalog and a contact list. Technologies: React, Next.js, SvelteKit, TypeScript, JavaScript, HTML5, CSS3, Sass, Figma.

Loomis. Custom software, from design to production. Loomis Desenvolvimento de Softwares Ltda. is the software development and architecture company I founded in January 2026. Strategy: Technical decisions tied to business goals. Architecture: Well-structured systems, easy to maintain and evolve. Build: Implementation of back-end services and web applications. Evolution: Continuous maintenance and improvement of what runs in production. Talk to Loomis by email.

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  1. node-crud-microservice node-crud-microservice Public archive

    CRUD microservice built with Node.js, Docker and PostgreSQL.

    JavaScript

  2. wps-timer wps-timer Public

    Pomodoro timer with preset durations, audible alerts and browser notifications when time is up.

    TypeScript

  3. finetuned-model-api finetuned-model-api Public archive

    Flask API for sentiment classification using a fine-tuned Hugging Face model.

    Python

  4. particle-swarm-optimization particle-swarm-optimization Public archive

    Multi-objective particle swarm optimization (MOPSO) for resource allocation problems, balancing multiple objectives and constraints.

    Jupyter Notebook 1

  5. itswillian.github.io itswillian.github.io Public

    Personal portfolio built with HTML, CSS and JavaScript: my story, skills, studies and projects.

    JavaScript

  6. wps-termo wps-termo Public archive

    Clone of the Term.ooo word game, built with Next.js and TypeScript.

    TypeScript