Apr 2026 - Jun 2026 · 3 mos Technologies: PHP, Symfony, Angular, Node.js, NestJS, Python, C#, Docker, PostgreSQL, Redis, microservices, Azure DevOps, APIs. • Joined through the support team, diagnosing and resolving production issues in PHP/Symfony, Angular, and Node.js/NestJS systems with microservices architecture; earned promotion within the first month to the company's internal banking project, taking ownership of new feature development. • The C# microservice integrating with SEFAZ (Brazilian tax authority) for NF-e and CT-e lookups queried SEFAZ's systems without rate control, risking account blocks, steep fines, and service unavailability for violating SEFAZ's usage rules; implemented a sliding-window rate limiter enforcing those rules, turning the microservice into a gatekeeper against excessive queries and increasing fiscal validation reliability. • Created and evolved a Node.js orchestrator microservice to coordinate multiple Python OCR engines, increasing accuracy and resilience in automated document data extraction. • Implemented a feature-flag-controlled financial settlement lock: when a power of attorney is submitted, the PHP backend calls the OCR orchestrator microservice, dynamically routing to the correct engine via payload, to validate authorization between shipper and carrier before releasing payment, automatically blocking CT-e settlement without a valid power of attorney and reducing fraud and default risk. • Integrated AI coding assistants as pair-programming tools into the daily development workflow, increasing delivery speed and code quality and building hands-on fluency with AI-first engineering practices. • Wrote automated tests for PHP and Node.js services, directing AI coding assistants to generate test code from business rules and expected scenarios, strengthening regression coverage across the support and banking projects.

Feb 2024 - Mar 2025 · 1 yr 2 mos Technologies: React, Next.js, Node.js, JavaScript, TypeScript, MySQL, Redis, SQL Database Administration, Docker, Data Streaming, Server-Side Development, tRPC, Tailwind CSS, queue processing, Linux, third-party API integrations, Git, GitHub, CRM, Omnichannel, APIs, DevOps. • Improved the ticket checkout flow, reducing friction and increasing conversion rates. • Event communications were limited to email; built a WhatsApp notification system integrated with Meta's official API via webhooks and REST APIs, alerting customers to successful and failed purchases, upcoming events, and event-day issues, improving customer engagement. • Meta's WhatsApp API exposes only endpoints, not a communication interface, leaving support unable to respond to customers; introduced an open-source omnichannel tool, built the server infrastructure from scratch, and integrated it with Meta's API and the notification system, delivering multi-channel support in under one week, cutting implementation time and costs and letting support scale while increasing customer satisfaction. • Improved backend integration with the payment provider, increasing reliability and transaction visibility. • Redesigned the payment logic to support individual payment accounts per event producer, simplifying financial management and payouts. • Initiated the development of a financial reporting module in the producer dashboard, enabling real-time access to revenue and payment data.

Jan 2024 - Apr 2026 · 2 yrs 4 mos Technologies: Node.js, JavaScript, TypeScript, Python, React, Express, PostgreSQL, Redis, RabbitMQ, BullMQ, Prisma, NoSQL, MongoDB, Docker, AI integrations, Vitest, Git, GitHub, GitHub Actions, CI/CD, n8n, Event-driven Architecture, ERP, CRM, APIs, DevOps. • Engineered a remote Learning Management System (Node.js, React.js, PostgreSQL) with a multi-gateway payment router that retried declined transactions on alternate providers, letting a college with local-only operations expand nationwide while cutting payment failures and lifting revenue. • Built a WhatsApp chatbot product automating customer service via configurable conversation flows and auto-generated CRM cards per interaction, freeing sales teams to focus on closing and letting marketing scale WhatsApp traffic. • Built and licensed a multi-tenant AI-powered SDR agent (LangChain, Python, Node.js, PostgreSQL, RAG/pgvector) that qualified and managed leads inside client CRMs via WhatsApp with session-aware AI-to-human handoff, increasing sales and response speed. • Built an MVP AI agent (LangChain, n8n) for Mercado Livre sellers that auto-answered buyer questions via a RAG knowledge base (PostgreSQL/pgvector) against product listings, responding to buyers in under 5 minutes. • Designed a multi-tenant platform (React.js, Node.js, RabbitMQ, event-driven architecture) automating hiring and operations for cleaning franchises, with real-time service tracking entirely through WhatsApp and no dedicated app. • Reduced ERP implementation costs by replacing commercial systems with customized open-source alternatives, saving client companies an average of R$100,000 per implementation. • Wrote unit tests with Vitest and implemented CI/CD pipelines via GitHub Actions, cutting deployment time from 1 hour to 20 minutes and strengthening regression coverage. • Owned architecture design across all projects and served as sole DevOps engineer, managing infrastructure on Digital Ocean with Docker.

May 2023 - Mar 2025 · 1 yr 11 mos Technologies: Vue.js 2, Node.js, Koa.js, PostgreSQL, Redis, Git, GitHub, CRM, Omnichannel, APIs, DevOps. • Developed the CRM end-to-end, covering both backend and frontend, from initial design to final delivery, establishing the client's core sales tooling from scratch. • Implemented a fully dynamic CRM model, allowing pipelines, stages, phases, and fields to be created and customized directly through the interface without technical intervention. • Implemented RBAC-based access control policies, ensuring granular permission management by user role. • Designed and implemented a multi-tenant architecture, enabling the company to operate multiple business units in isolation, similar to a franchise model. • Built native WhatsApp integration, enabling automatic card and record creation in the CRM from incoming messages, connecting communication directly to the sales pipeline. • Customized and deployed an open-source omnichannel customer support solution integrated into the CRM ecosystem, reducing tooling costs and centralizing customer communication in one place. • Delivered the project fully to the client, with the system running in production and actively used.

Jan 2023 - Jan 2024 · 1 yr 1 mo Technologies: Vue.js 2, Node.js, Koa.js, JavaScript, TypeScript, PostgreSQL, Redis, Strapi, Stripe, n8n, Google Geocode, Ionic, Capacitor, Git, GitHub, CRM, Omnichannel, APIs, DevOps. • Delivered continuous improvements to the core platform used nationwide by franchisees and representatives, keeping it aligned with evolving business and compliance needs. • Built a mass communication and notification system with mandatory read confirmation, improving institutional communication and providing legal assurance. • Developed a social media content centralization platform with Stripe-integrated subscription billing, adding a new monetization stream to the franchise model. • Redesigned the platform UI with a mobile-first, responsive approach, improving user experience. • Led the migration from web-only to iOS and Android apps (Ionic, Capacitor), including store publishing, extending the platform's reach to mobile users nationwide. • Built native and n8n-based automations integrating Google services, CRMs, payment gateways, and Meta tools, eliminating manual work across marketing and operations. • Managed and customized open-source tools, accelerating delivery and reducing development costs. • Built landing pages and marketing funnels for digital launches, accelerating time-to-market for new campaigns. • Implemented CRM-integrated chatbot flows, reducing response time and improving operational efficiency. • Directed the company's technology strategy and software architecture, aligning technical investments with business objectives and product decisions. • Led the technical team and coordinated project execution, tracking priorities and deadlines while translating business needs into viable technical solutions.

Oct 2019 - Jan 2023 · 3 yrs 4 mos • Dedicated two years to formal self-study and live execution of day-trading, swing-trading, position-trading, and long-term investment strategies across USD futures, the Bovespa futures index, and cryptocurrency markets. • Traded personal capital on the B3 exchange using Profit Pro, managing risk through the extreme volatility and circuit breakers of the 2020 pandemic market crash while holding live USD futures positions. • Returned to software development as a freelance web developer, building marketing campaign websites for clients while deepening digital marketing expertise (SEO, landing pages, conversion funnels), the bridge back into full-time engineering that led to the ICF Group role above.

Jun 2018 - Oct 2019 · 1 yr 5 mos Technologies: Uniface, PL/SQL, Oracle Database, HTML, JavaScript, CSS, ER/Studio. • Improved user experience by implementing dynamic field display logic (e.g., Individual vs. Corporate registration), reducing visual clutter and operational errors. • Designed and implemented a contextual help and documentation system integrated into the application (F1 help and field-level tooltips), increasing user productivity and reducing operational questions. • Optimized critical batch processing routines, cutting execution time from approximately 3 hours to around 30 minutes. • Developed credit eligibility analysis systems that validated CPF and CNPJ data against government databases and blocked non-compliant disbursements, saving more than R$1 million (BRL) in regulatory fines. • Integrated with SERASA for credit risk analysis, processing and structuring non-standard responses and presenting the information clearly to end users. • Introduced modern interfaces using HTML, JavaScript, and CSS widgets integrated with Uniface, significantly improving the visual and interactive quality of the system. • Implemented code modularization practices, reusable functions, and includes, reducing duplication and improving maintainability. • Developed routines to calculate and distribute profit-sharing payments to cooperative members. • Built complex data models in Oracle Database using ER/Studio, applying advanced PL/SQL across the system's data layer, providing a reliable foundation for the credit and eligibility systems built on top of it.

Mar 2018 - Jun 2018 · 4 mos Technologies: Java, Object-Oriented Programming (OOP) ,PostgreSQL, Java Swing, JDBC, Eclipse • Developed and maintained core features of a laboratory management desktop system using Java, object-oriented programming, and JDBC integration with PostgreSQL, supporting day-to-day laboratory operations. • Collaborated within an agile Scrum-based development team, using Eclipse as the primary development environment.

Jan 2016 - Dec 2017 · 2 yrs Technologies: PHP, HTML, CSS, JavaScript, AJAX, jQuery, MySQL, VBA, Microsoft Access, Git, GitHub. • Began as an IT support technician, maintaining computers, printers, and monitors, before advancing into database modeling and automation work. • Modeled and maintained databases in MySQL and Microsoft Access to support internal systems, improving data consistency for day-to-day operations. • Integrated SisBB (Banco do Brasil's mainframe system) with Excel spreadsheets using VBA, automating data updates and consolidation. • Developed browser-based macros and automations to extract data from the internal intranet and generate Excel reports, reducing manual data-entry work for internal teams. • Built front-end features for internal intranet systems using JavaScript, AJAX, and jQuery, improving usability of internal tools. • Customized and maintained a WordPress-based internal blog, including custom PHP development, supporting internal communications. • Built an end-to-end system to manage branch manager absences, including request submission, approval workflows, and a visual heatmap dashboard for real-time monitoring, significantly improving operational control.