Full Stack Software Developer | TypeScript | Rust

• Led a team of 5 developers to successfully plan, implement, and launch an Android application facilitating family enrollment in housing improvement programs, overseeing end-to-end delivery and code review processes. • Architected and deployed a centralized JWT-based authentication and authorization system across multiple platform systems, securing both internally developed applications and service accounts for external integrations including Pipefy and Retool. • Restructured code repositories into a monorepo architecture using Turborepo, eliminating all CVEs related to vulnerable dependencies and improving maintainability across the platform. • Achieved an 85% reduction in infrastructure and software licensing costs by developing and launching an internal platform that replaced external dependencies on Pipefy and Retool. • Delivered a local-first web application with optimized performance, maintaining LCP (Largest Contentful Paint) between 1.57s and 2.3s for enhanced user experience. • Improved system reliability by reducing incident frequency from 1 every 3 days to 1 every 5 weeks through proactive monitoring and architectural improvements. • Instrumented applications with Sentry for comprehensive error tracking

• Conducted comprehensive internal analysis of existing systems to identify critical technical debt bottlenecks that were delaying delivery timelines and hindering team productivity. • Implemented a monorepo infrastructure enabling end-to-end testing in local environments, eliminating dependency on remote environments and accelerating development cycles. • Developed fixture tooling for integration testing scenarios, reducing development cycle time by enabling comprehensive end-to-end testing during feature development and bug fixes. • Architected and deployed a Single Sign-On (SSO) system unifying authentication across ASP.NET, .NET, and TypeScript platforms for seamless cross-system user experience. • Enhanced system stability by reducing downtime incidents from 1 every 2 days to 1 every 4 weeks through strategic technical debt resolution and infrastructure improvements. • Instrumented applications with Sentry for comprehensive error tracking, reducing average troubleshooting time from 6 hours to 1 hour and accelerating issue resolution.

First experience on digital communities (DAO) infrastructure. Unfortunately team was layoff due to product revenue issues. Context: Origami helps established organizations carry their success forward into Web3 #Achievement: - Delivered on tight deadline the front-end and back-end parts of a DAO proposal voting system with scheduled on-chain transaction executions #Duties: Development - Full-stack web3 development and code reviews #Techs: TypeScript | Node.js | AWS | Postgres | Fastify | Prisma | Vite/Vitest | Datadog | Solidity | React | Tailwind CSS | Redis | Wagmi | Permastore First experience on digital communities (DAO) infrastructure. Unfortunately team was layoff due to product revenue issues. Context: Origami helps established organizations carry their success forward into Web3 #Achievement: - Delivered on tight deadline the front-end and back-end parts of a DAO proposal voting system with scheduled on-chain transaction executions #Duties: Development - Full-stack web3 development and code reviews #Techs: TypeScript | Node.js | AWS | Postgres | Fastify | Prisma | Vite/Vitest | Datadog | Solidity | React | Tailwind CSS | Redis | Wagmi | Permastore Skills: Prisma ORM · Blockchain · Database Management System (DBMS) · Cloud Platform · Front-end · TypeScript · DevOps Practices · Frameworks · Continuous Integration and Continuous Delivery (CI/CD) · Blockchain Node Development · User Experience Maximization · backend development · RESTFul API Integration

First professional experience with Blockchain, Solidity and Elixir. Context: Zed Run is the first play-to-earn digital horse racing game of skill to live not only on the blockchain but in an open market. Zed horses are “breathing NFTs” that you can breed, race, buy/sell and lend/borrow. #Achievements: - Core developer of a novel NFT lending feature which increased ~20% of paying users by allowing them to race top notch horses. Solidity contracts were audited by Quantstamp on Polygon - Solved a more than year-long memory leak on a core business service that handled concurrent incoming on-chain events and outgoing on-chain transactions - Delivered a solution that reduced financial barriers of entry in order to create a free to play web2 game experience which later accounted for 70% of new signups - Cleaned up the front-end build to remove all warnings - Guaranteed integrity checks from a mission critical Airdrop for ~200k players (Merkle (Tree) Proofs) #Duties: - Development - Full-stack web3 development including solidity smart-contracts, nodejs, elixir back-end and code reviews - Analysis - Close work with product and design teams, suggesting changes for faster future-development time - Support - On-call as second level support, monitoring system usage and errors. Create tools for faster ad-hoc solutions #Techs: JavaScript/TypeScript | React | Node.js | Postgres | Firebase | GCP | Elixir | Solidity | Foundry | Datadog | Jest | Chakra UI | Web3 | SVG | GraphQL (backend + frontend) | Webpack | Redis | WebSocket First professional experience with Blockchain, Solidity and Elixir. Context: Zed Run is the first play-to-earn digital horse racing game of skill to live not only on the blockchain but in an open market. Zed horses are “breathing NFTs” that you can breed, race, buy/sell and lend/borrow. #Achievements: - Core developer of a novel NFT lending feature which increased ~20% of paying users by allowing them to race top notch horses. Solidity contracts were audited by Quantstamp on Polygon - Solved a more than year-long memory leak on a core business service that handled concurrent incoming on-chain events and outgoing on-chain transactions - Delivered a solution that reduced financial barriers of entry in order to create a free to play web2 game experience which later accounted for 70% of new signups - Cleaned up the front-end build to remove all warnings - Guaranteed integrity checks from a mission critical Airdrop for ~200k players (Merkle (Tree) Proofs) #Duties: - Development - Full-stack web3 development including solidity smart-contracts, nodejs, elixir back-end and code reviews - Analysis - Close work with product and design teams, suggesting changes for faster future-development time - Support - On-call as second level support, monitoring system usage and errors. Create tools for faster ad-hoc solutions #Techs: JavaScript/TypeScript | React | Node.js | Postgres | Firebase | GCP | Elixir | Solidity | Foundry | Datadog | Jest | Chakra UI | Web3 | SVG | GraphQL (backend + frontend) | Webpack | Redis | WebSocket Skills: PostgreSQL · Blockchain · Google Cloud Platform (GCP) · Non-Fungible Tokens (NFTs) · Database Management System (DBMS) · Cloud Platform · Front-end · Data Analytics · TypeScript · Elixir · Amazon Web Services (AWS) · DevOps Practices · Frameworks · Continuous Integration and Continuous Delivery (CI/CD) · Blockchain Node Development · User Experience Maximization · backend development · RESTFul API Integration

My first experience building a full platform using only NoSQL as a data layer. Context: MedQ is an app that facilitates the learning of medical students to enter their intended internship program. To this end, it developed the MedQ study platform with questions, flashcards, tests and mock exams that tracks student performance and creates an intelligent daily schedule of review activities. #Achievement: - In less than a year, architect and developed app from scratch by a team of two developers which later had 10k+ users on free tier and 1k+ subscribers #Duties: Development - Architecture decision and full-stack development. Planning and executing DB schema changes with no downtime Analysis - Closely working with founders to bring unique spaced repetition algorithm, UX and UI ideas to a working product Support - Troubleshoot user sent errors #Techs: JavaScript | React | Webpack | Node.js | Firebase | Firestore | BigQuery | GCP | Sentry My first experience building a full platform using only NoSQL as a data layer. Context: MedQ is an app that facilitates the learning of medical students to enter their intended internship program. To this end, it developed the MedQ study platform with questions, flashcards, tests and mock exams that tracks student performance and creates an intelligent daily schedule of review activities. #Achievement: - In less than a year, architect and developed app from scratch by a team of two developers which later had 10k+ users on free tier and 1k+ subscribers #Duties: Development - Architecture decision and full-stack development. Planning and executing DB schema changes with no downtime Analysis - Closely working with founders to bring unique spaced repetition algorithm, UX and UI ideas to a working product Support - Troubleshoot user sent errors #Techs: JavaScript | React | Webpack | Node.js | Firebase | Firestore | BigQuery | GCP | Sentry Skills: NoSQL · Google Cloud Platform (GCP) · Database Management System (DBMS) · Cloud Platform · Front-end · Data Analytics · JavaScript · Solution Architecture · Cloud Firestore · DevOps Practices · Frameworks · User Experience Maximization · backend development · RESTFul API Integration

Context: Gradus is a Business Consulting and Services company that has been building a successful history with approximately 430 projects for over 190 clients in Brazil and 25 other countries, aimed at supporting the top management of companies in a variety of turnaround programs #Achievements: - Lead a major feature development for browsing through budgeting, costs and actions history over all system data - Reduced by ~30% query latency to users with Leadership roles. This special case uses hierarchical access permission preventing the use of simple joins #Duties: Development - Tech lead, full-stack development, architect new features, create quality assurance tests and code review Analysis - Requirement analysis with product owners, breaking it down to tasks and sprint planning Support - Close work with first level support team for troubleshooting and fast responses DevOps - Write deploy scripts and plan deployment for over 15 clients, each one with their own production, homolog and develop environment #Techs: Java | JavaScript | Dropwizard | AngularJS | AWS EC2 ELB S3 RDS | Node.js | Selenium Context: Gradus is a Business Consulting and Services company that has been building a successful history with approximately 430 projects for over 190 clients in Brazil and 25 other countries, aimed at supporting the top management of companies in a variety of turnaround programs #Achievements: - Lead a major feature development for browsing through budgeting, costs and actions history over all system data - Reduced by ~30% query latency to users with Leadership roles. This special case uses hierarchical access permission preventing the use of simple joins #Duties: Development - Tech lead, full-stack development, architect new features, create quality assurance tests and code review Analysis - Requirement analysis with product owners, breaking it down to tasks and sprint planning Support - Close work with first level support team for troubleshooting and fast responses DevOps - Write deploy scripts and plan deployment for over 15 clients, each one with their own production, homolog and develop environment #Techs: Java | JavaScript | Dropwizard | AngularJS | AWS EC2 ELB S3 RDS | Node.js | Selenium Skills: MySQL · Database Management System (DBMS) · Cloud Platform · Java · Technical Leadership · Front-end · Data Analytics · JavaScript · Python (Programming Language) · Amazon Web Services (AWS) · Frameworks · User Experience Maximization · backend development · RESTFul API Integration Skills: MySQL · Database Management System (DBMS) · Cloud Platform · Java · Technical Leadership · Front-end · Data Analytics · JavaScript · Python (Programming Language) · Amazon Web Services (AWS) · Frameworks · User Experience Maximization · backend development · RESTFul API Integration

My first experience with the exciting world of agile methodologies. Context: UOL Content and Services offers more than 1,000 channels of journalism, information, entertainment and services. With 90% coverage (9 out of 10 Brazilians access UOL content every month). UOL also offers entertainment products (UOL Play, UOL Economy +, UOL Club), security and Assistance (Antivirus, Technical Assistance, UOL Resolve), solutions for digital media (Advertising), among others. #Achievements: - Tech Lead and Scrum Master of a small team (4 developers) that delivered a fast billing system for UOL Diveo clients' cloud usage. Prices changed frequently and billing was based on event date. API latency was constantly on the 25ms, considering p95 - Traceable logs over distributed billing systems and monitored with Splunk Dashboards for systems misbehavior reducing revenue loss and facilitating troubleshooting - Refactored the critical notification system used internally by every UOL Service, leading to faster lead time for adding new features #Duties: Development - Full-stack development of over 5 billing micro-services Analysis - Requirement analysis with product board and breaking it down to tasks Support - Complex / critical issue investigation and resolution DevOps - Describe, plan and monitor multi system deployments with no Docker goodies #Techs: Java EE Stack | JUnit | Spring MVC | JMS | Splunk | Oracle | SMTP | JBoss HA My first experience with the exciting world of agile methodologies. Context: UOL Content and Services offers more than 1,000 channels of journalism, information, entertainment and services. With 90% coverage (9 out of 10 Brazilians access UOL content every month). UOL also offers entertainment products (UOL Play, UOL Economy +, UOL Club), security and Assistance (Antivirus, Technical Assistance, UOL Resolve), solutions for digital media (Advertising), among others. #Achievements: - Tech Lead and Scrum Master of a small team (4 developers) that delivered a fast billing system for UOL Diveo clients' cloud usage. Prices changed frequently and billing was based on event date. API latency was constantly on the 25ms, considering p95 - Traceable logs over distributed billing systems and monitored with Splunk Dashboards for systems misbehavior reducing revenue loss and facilitating troubleshooting - Refactored the critical notification system used internally by every UOL Service, leading to faster lead time for adding new features #Duties: Development - Full-stack development of over 5 billing micro-services Analysis - Requirement analysis with product board and breaking it down to tasks Support - Complex / critical issue investigation and resolution DevOps - Describe, plan and monitor multi system deployments with no Docker goodies #Techs: Java EE Stack | JUnit | Spring MVC | JMS | Splunk | Oracle | SMTP | JBoss HA Skills: Database Management System (DBMS) · Data Analytics · backend development · RESTFul API Integration

This was my very first real job as a software developer. Context: Atom BI - Business Intelligence is a solution that helps managers, analysts and business people to monitor, analyze and make better decisions through Dashboards and graphical analysis that are interactive and flexible. #Achievements: - Fully automated process to extract, transform and load (ETL) user databases into Pentaho BI - Billing system based on user storage and CPU usage over previous month #Duties: - Sole back-end developer, from scratch to production-ready platform #Techs: Java | Spring MVC | Pentaho suite tools | Postgres | PL/SQL This was my very first real job as a software developer. Context: Atom BI - Business Intelligence is a solution that helps managers, analysts and business people to monitor, analyze and make better decisions through Dashboards and graphical analysis that are interactive and flexible. #Achievements: - Fully automated process to extract, transform and load (ETL) user databases into Pentaho BI - Billing system based on user storage and CPU usage over previous month #Duties: - Sole back-end developer, from scratch to production-ready platform #Techs: Java | Spring MVC | Pentaho suite tools | Postgres | PL/SQL Skills: backend development · RESTFul API Integration