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johann0301/README.md

Johann Bezerra de Andrade

Full-Stack Developer | Forward Deployment Engineer | AI Agents | Integration Specialist | APIs | Automations

I am a Full-Stack Developer focused on web development, system integrations, process automation, AI agents, and building solutions driven by real business problems.

I have practical experience working with web applications, REST APIs, data synchronization, corporate automation workflows, SaaS platform integrations, AI-powered bots, computer vision, and financial systems with a focus on security, traceability, and scalable architecture.

Currently

  • 💼 Forward Deployment Engineer at Jestor
  • 🎓 Bachelor's degree in Computer ScienceUNIESP Centro Universitário (in progress)
  • ⚙️ Focused on integrations, APIs, automations, AI agents, and full-stack development
  • 🌎 Full-stack development / integrations / AI agents / automation / platform engineering

Tech Stack

Backend, APIs & Integrations

TypeScript Node.js Express Python FastAPI Java Spring Boot REST API tRPC Zod

Technical specialties:

  • Full-stack application and API development
  • Integrations between ERPs, CRMs, SaaS platforms, and internal systems
  • REST APIs, tRPC, webhooks, and schema validation with Zod
  • Business process automation
  • Data synchronization across multiple platforms
  • Modular architecture with services, routers, and integration layers
  • Practical security fundamentals: RBAC, rate limiting, input validation, idempotency, audit logs, and encrypted fields

Frontend

React Next.js JavaScript TypeScript Tailwind CSS Zustand HTML5 CSS3

Experience with modular interfaces, operational dashboards, workflow-oriented web applications, internal panels, and API-driven screens.


AI Agents & Automation

LangChain LangGraph OpenAI Gemini n8n Evolution API Meta

Experience with AI agents, RAG, conversation memory, multi-agent orchestration, external tool automation, and messaging channel integrations through Evolution API and Meta.


Databases, Queues & Infrastructure

PostgreSQL Supabase MongoDB Redis BullMQ Prisma Drizzle Docker Linux Vercel Google Cloud

Experience with relational and document persistence, queues, cache, asynchronous processing, containerized deployments, CI/CD, and infrastructure for web applications and automations.


Computer Vision

OpenCV YOLO OpenVINO

Experience with video processing, people detection, tracking, counting in real environments, and deployment close to camera infrastructure.


Projects & Experience

  • Jestor Integrations: business automations and system integrations connecting Jestor with ERPs, reservation platforms and external APIs. Main stack: Jestor, Python, Omie, Stays, ReceitaWS/CNPJ, REST APIs and webhooks.
  • Akira Enem: internal full-stack platform for Akira Enem, with my strongest focus on financial/compliance flows, zero-custody payment orchestration, PIX, Brazilian invoices, U.S. clients/users, RBAC, idempotent webhooks and type-safe APIs. Main stack: T3 Stack, Next.js, TypeScript, tRPC, Drizzle and PostgreSQL.
  • Trova: AI concierge for hospitality/luxury travel with document ingestion, semantic search, PDF image extraction, conversation memory and location-aware responses. Main stack: n8n, FastAPI, Gemini, Supabase/pgvector, Meta and Docker.
  • Multi-Agent Platform: collaborative multi-agent backend with tool orchestration, conversation checkpointing, delayed jobs, calendar integrations and messaging through Evolution API. Main stack: TypeScript, Express, LangChain, LangGraph, Supabase/PostgreSQL, MongoDB, Redis and BullMQ.
  • Lu.ma Module: TypeScript npm package for event and RSVP workflows, participant sync, status history and E.164 phone normalization. Main stack: TypeScript, MongoDB, Zod and Lu.ma API.
  • Inflow: computer vision system for people counting in shopping mall cameras. Main stack: Python, OpenCV, YOLOv8, ByteTrack, BoT-SORT, OpenVINO and Docker.
  • Freelance Projects: full-stack development for corporate clients, including a high-performance web platform for Clutch Media. Main stack: Next.js, React, TypeScript, Vercel, AWS/AWS Amplify, Google Cloud, Redis and i18n.

Featured Expertise

✔ Full-stack web application development
✔ System integration across ERPs, CRMs, and SaaS platforms
✔ Business workflow automation
✔ AI agents connected to tools, APIs, and databases
✔ Scalable APIs with TypeScript, Node.js, FastAPI, tRPC, and REST
✔ Data synchronization across multiple platforms
✔ Resilient and event-oriented integration modeling
✔ Practical security fundamentals applied to web systems
✔ Computer vision applied to real-world environments


Currently Studying & Researching

  • Advanced AI agent architectures
  • Multi-agent orchestration with tools and memory
  • Resilient integrations between systems and external APIs
  • Advanced T3 Stack patterns with Next.js, TypeScript, Drizzle, and tRPC
  • Computer vision applied to retail environments

Where to Find Me

LinkedIn Email GitHub

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