ABOUT ME
Founding AI Full-Stack Engineer at CoGrader, building an AI grading and feedback platform that helps K-12 teachers grade a class set of essays in minutes instead of a weekend. I own features end to end across product, React, shared components, Node.js services, queue workers, LLM engines, Firestore, observability, and cloud infrastructure.
My standout contribution is the CoGrader browser extension: a product surface that puts CoGrader directly inside LMS grading screens and avoids months of bureaucratic partner integrations. It supports workflows across Canvas, Blackboard, Schoology, Brightspace, Microsoft Teams for Education, and Google Classroom, with Moodle import validation against a real customer sandbox.
I work on applied AI with Gemini, OpenAI, Anthropic, prompt engineering, evals, RAG, and MCP. I also care about the product edge of engineering: teacher-facing copy, error taxonomy, observability, cost tracking, and the distinction between recognized blockers and genuine system failures.
I use AI as leverage in my own engineering workflow. Claude Code, custom skills, routed agent context, and MCP servers connected to PostHog, Axiom, Slack, Azure, and GitHub help me investigate, implement, review, and communicate faster over live systems instead of guesses.
PRESENTATIONS
ChatGPT in WhatsApp
My presentation on integrating ChatGPT into WhatsApp (using Facebook official API) with Nest.js.
CERTIFICATIONS
Google Cloud Platform (GCP)
Certified in Google Cloud Platform, with hands-on experience building and operating cloud infrastructure, AI workloads, data systems, and production services on GCP.
EXPERIENCES
Founding AI Full-Stack Engineer2025 – Present
CoGrader, Remote
As a founding engineer, I build CoGrader's AI grading and feedback platform, helping teachers grade a class set of essays in minutes instead of a weekend. It runs on LLMs (Gemini, OpenAI, Anthropic) over Google Cloud, backed by $250K+ in GCP credits. I own features end to end: grading and feedback pipelines, backend services, the web app, the browser extension, the data layer, and the infrastructure under it.
Standout contribution: built the browser extension that puts CoGrader directly inside Canvas, Blackboard, Schoology, Brightspace, Microsoft Teams for Education, and Google Classroom. Instead of waiting months on LMS partner integrations, teachers install it and CoGrader appears in the grading screen they already use. That removed a major funnel bottleneck, raised conversion, and opened schools and districts that would otherwise be blocked.
AI:
- Gemini
- OpenAI
- Anthropic / Claude
- Prompt engineering
- Evaluation harnesses
- RAG (retrieval-augmented generation)
- Model Context Protocol (MCP)
- Claude Code for agentic development workflows
Frontend:
- React
- Vite and Astro
- TypeScript
- Mantine and in-house design system
- Tailwind
- Plasmo / Chrome MV3 browser extension
Product & integrations:
- Canvas, Blackboard, Schoology, Brightspace, Microsoft Teams for Education, Google Classroom, and Moodle validation work
- Google Classroom, EdLink, LMS and rostering workflows
- File ingestion: PDF, DOCX, handwritten scans, audio, spreadsheets, ZIP
- Teacher-facing error states, copy, and workflow reliability
Backend:
- Node.js / Express
- Python
- Firestore / Firebase Admin
- Redis and BullMQ queue workers
- Stripe
Data, observability & infrastructure:
- Google Cloud (GCP), Azure and AWS
- Terraform and Docker
- Render-to-Azure migration work
- PostHog product analytics, feature flags and experiments
- Axiom structured logging
- BigQuery and Dataform
- Cost tracking and product analytics
- GitHub Actions, pnpm and Turborepo monorepo
How I work:
- Fix causes, not symptoms: trace bugs to the mechanism instead of patching only the call site.
- Treat observability as a product surface: recognized blockers should not look like infrastructure failures.
- Use AI as leverage with routed agent context, custom skills, and MCP servers wired to live systems.
GoatVPNJun 2024 – Present
Founder & Tech Lead, Remote
Led the complete technical conception, development, and delivery of the GoatVPN platform — architecture, backend, frontend, and third-party integrations.
Key Deliverables & Technologies
Backend:
- NestJS (API)
- Node-ssh to manage VPN connections via WireGuard shell scripts
- Pusher (websockets)
- JWT auth strategy
Database:
- MongoDB Atlas (data persistence)
- Redis (cache and queue processing)
Frontend:
- React
- Next.js
- Tailwind
- TailAdmin (operator-focused admin dashboard)
- react-simple-maps (world map with servers)
Integrations:
- Stripe API (recurring payments)
- Apple Store API (verify Apple webhook payments)
- Cryptomus API (crypto gateway)
- NoxPay API (Pix gateway)
- HaveIBeenPwned API (email-breach check)
- Leakcheck API (credential-breach check)
- Dehashed API (credential-breach check)
- Slack API (payment/cookie event notifications)
- Google Tag Manager (conversion events)
- Meta API (conversion events after payment)
Infrastructure:
- New Relic (monitoring)
- DataPacket (SSH server management)
- AWS ECS
- AWS Cognito (social auth)
- AWS SES (emails)
- GitHub Actions & CI/CD
- Cron routines
- Shell scripts to provision DataPacket Linux servers
Team Leadership:
- Structured and hired the full technical team: DevOps, Web Frontend, Mobile (cross-platform and native) and iOS native developer.
Impact: Delivered high-performance, scalable, and secure solutions through hands-on development and strategic vision.
Tech LeadMar 2023 – Jun 2024
GO-K Digital, Remote
Tech Lead & Senior Software Engineer at Grafeno Digital, leading the Credit Emission project and driving technical excellence across full-stack development.
Technical Leadership:
- Architect and develop scalable APIs in NestJS with full Swagger documentation
- Design robust data solutions with PostgreSQL and Redis caching layers
- Containerized deployments with Docker and Kubernetes orchestration
- Build responsive front-ends with React and TypeScript
DevOps & Infrastructure:
- Automate CI/CD pipelines through GitHub Actions
- Monitor production with Grafana (DEV/STG) and New Relic (PROD)
- Manage AWS cloud infrastructure for performance and scalability
Team Development:
- Lead Individual Development Plans (IDPs) to accelerate team growth
- Mentor developers and establish best practices across the org
Impact: Delivered high-performance, scalable applications while fostering team expansion and driving success through technical innovation and strategic leadership.
Tech LeadJul 2022 – Feb 2023
Itaú BBA, São Paulo
Itaú BBA was building a new Bankline for corporate clients. I was responsible for the Authentication and User Permissions squad within it.
DevOps:
- AWS EKS (Spring Boot deploy)
- AWS S3 (Angular deploy)
- AWS API Gateway (API security)
- AWS CodePipeline (deployment)
- AWS STS (cross-app tokens)
- Docker
- Charon (encrypting front-end to back-end requests)
Back-end:
- Java
- Spring Boot 2.6.8
- Hexagonal Architecture
- Auth0 & CIAM
- TDD (90% coverage)
- Swagger (API documentation)
Front-end:
- React
- Voxel (internal framework)
- Accessibility
- TDD (90% coverage)
FIC EngineerSep 2021 – Jul 2022
Trustly
Trustly is a payment gateway across North America and Europe. I integrated Trustly's gateway with American banks using Web Scraping and REST APIs.
Back-end:
- Java
- PostgreSQL
- Docker
- Git
- AWS / GCP / Azure (rotating IPs for web scraping)
- Scrum with Jira
Software EngineerJun 2019 – May 2021
Itaú Unibanco
Worked in the Mobile sector, developing new WebViews in Angular embedded in the Android and iOS applications.
Stack:
- Angular (front-end)
- Java
- AWS S3 + CodePipeline (deploy)
- Docker
- Jenkins
Senior Technology ConsultantMar 2020 – Mar 2021
Sthorm
Full-stack delivery for the ViralCure project (viralcure.org).
Stack:
- Angular (front-end)
- NestJS
- PostgreSQL
- Docker
- Scrum with Trello
Software EngineerApr 2018 – Jun 2019
Accenture
Worked on the Porto Seguro project.
Stack:
- Angular + Angular Material
- Java
- Node.js
- Jenkins
Software EngineerApr 2016 – Jan 2017
QueroQuitar
Built integrations via WebService, REST and SOAP for multiple providers.
Stack:
- Angular (front-end)
- Laravel & Lumen
- MongoDB
- MySQL
- Docker
- TDD
Software Engineer InternDec 2014 – Feb 2015
Ingresse
Back-end:
- PHP
- Symfony
- Nginx
- REST API
- Git
InternNov 2013 – Oct 2014
Porto Seguro
EDUCATION
Systems AnalysisSep 2014 – Jun 2016
Universidade Paulista
Full Stack DevelopmentMay 2014 – Jun 2014
Net Coders
Web Development, WebmasterSep 2012 – Jun 2013
SENAI São Paulo
CERTIFICATE
AWS – Cloud PractitionerPresent
Foundational understanding of AWS Cloud concepts, services, and terminology — a strong base for pursuing role-based AWS certifications.