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Full Stack Developer
With over 5 years of experience in web development, including blockchain-related projects, AI agent development (LLMs), static sites, and complex systems-integration and manufacturing projects.
I can help bring your idea to life — dashboards, integrations with sales platforms and with AI — and I am always open to new challenges. I can also join an ongoing project or even fix that issue left behind in your vibe-coding project!
I hold a degree in Control & Automation Engineering from Pitágoras and a postgraduate degree in Distributed Software Architecture from PUC Minas. Solid experience with TypeScript, Node.js, NestJS, LLMs, React, Next.js, C# and .NET.
Career
Experience
Jun 2024 — Present
Software Architect & Full Stack Developer
Freelancer
As a freelancer, I worked on independent projects across different sectors, taking ownership from architecture to deployment. I built high-performance landing pages focused on SEO and conversion, admin panels for lead management and analytics, and SaaS platforms with real-time dashboards and metrics systems for digital products. In the Web3 space, I developed launch platforms with crypto wallet integration (RainbowKit, Wagmi), Hyperliquid network connectivity, NFT galleries, and Firebase-based whitelist systems. I also wrote smart contracts in Solidity and built integrations with multiple blockchains for DeFi platforms. Across these projects, I worked with React, Next.js, Astro, NestJS, TypeScript, Firebase, Solidity, and Tailwind CSS — always focused on user experience, performance, and scalability.
Jun 2021 — Jun 2024
Mid-level Software Engineer
Venturus →Worked on the stability and growth of critical applications across the full stack. Built APIs with Node.js, NestJS, and TypeScript, advanced user interfaces for the manufacturing industry using React, TypeScript, and Styled Components, and managed containers and deployments on AWS. Led integrations via GraphQL and REST, conducted pull request reviews, wrote unit and E2E tests, and followed agile practices with direct client communication in English. Key projects: delivered the back-end of a shopping assistant for a multinational company, building microservices on AWS integrated with Okta for authentication. Also contributed to a manufacturing platform for a company with over 80 factories worldwide, developing a BFF application that applied complex business rules on top of a GraphQL API.
May 2021 — Jun 2021
Junior Software Developer
Flapper →Maintenance and development of front-end features with ReactJS and Next.js. Bug fixing and version management with Git.
All work
Projects
End-to-end engineering from architecture to deployment. Each project is a live schematic of engineering decisions.
Demos, Personal & Hackathons
Other Projects
Personal projects, demos and hackathon submissions.
Get in touch
Get in touch.
Whether it's a project, a job opportunity, or just a technical conversation — I'm always open to hearing from people building interesting things.
contato@thalessantana.dev