Open
01
Rejogy
Mobile product: organization, payments and matchmaking for sports matches.
GO · REACT NATIVE · POSTGRESQL · STRIPE
PT
CONTACT
Full Stack & AI
Software Engineer
Marcelo
Murilo
I build products from zero to production: backends in Node.js and TypeScript, LLM agents with RAG and MCP, and computer vision. I also prototype interactive experiences.
NODE.JS · TYPESCRIPT · PYTHON · POSTGRESQL · LLMS
CLICK OR SCROLL TO EXPLORE
better with sound
02
Every product
10:42
...
...
?
Every product
starts with a
problem that's still
poorly defined.
Messages, spreadsheets,
data, siloed systems,
and plenty of questions.
Client
...
We need a system
that organizes all this.
Planilha.xlsx
...
NameItemStatus
Order 1LaundryPending
Order 2ShoesPending
Order 3WashPending
Database
...
- USERS
- ORDERS
- SERVICES
- LOCATIONS
- ...
API
...
- GET /orders
- POST /services
- PUT /status
- ...
Legacy system
...
- UNDOCUMENTED
- NOT SCALABLE
- ...
AI Model
...
- ERRORS: 23%
- LATENCY: HIGH
- COST: HIGH
- ...
We need
something
better!
Now what?
03
I organize,
I organize,
structure
and turn it
into a product.
From problem to production:
architecture, data, automation,
AI and interface.
01
UNDERSTAND
the problem
PROBLEM
BUSINESS
RULES
02
DESIGN
the architecture
API &
DATABASE
03
BUILD
and test
AUTOMATION
& AI
INTERFACE
04
DELIVER
and ship to production
PRODUCTION
BACKENDNode.js · TypeScript · Go · Python
DATAPostgreSQL · Redis · S3 · Vector DB
AILLMs · RAG · MCP · Agents
DEVOPSDocker · CI/CD · GCP
QUALITY FOCUS
—
TESTING · MONITORING · SCALABILITY
Products & live sites
02
Open
View demo
02
Boy Arena
Interactive prototype in Phaser + TypeScript — an engine study, game loop and web build.
PHASER · TYPESCRIPT · VITE · GitHub
Repositories
03
Chat
Kit
RAG · Hugging Face
01
Portfolio Chat Kit
This very portfolio's assistant (instant answers, RAG-backed AI and mascot) extracted into its own open-source kit.
NODE.JS · TYPESCRIPT · RAG · HUGGING FACE
RAG
& Agents
FastAPI · Claude
02
Agents & RAG
RAG MVP + multi-agent orchestrator: hybrid retrieval, model routing and observability.
PYTHON · FASTAPI · RAG · ANTHROPIC
Face
Embeddings
InsightFace · OpenCV
03
Face Embeddings
Face recognition service: embedding extraction, matching and vector indexing.
PYTHON · INSIGHTFACE · OPENCV
Professional journey
Experience
- 2024 — PRESENT Rejogy Founder & Lead Engineer –80% EFFORT ORGANIZING MATCHES
- 2024 — PRESENT Freelance AI & Automation Engineer LLM AGENTS VIA MCP · VISION WITH YOLOV8
- JAN 2026 — MAY 2026 Instituto Azimuth Backend Developer — Automation & AI CRITICAL QUERIES FROM 20 MIN → 1–2 S
- APR 2025 — NOV 2025 CDTI Software Engineering Intern ANGULAR + TYPESCRIPT · INTERNAL AI TOOLS
- JUN 2024 — AUG 2025 Maximize Support Analyst — Product Focus –30–50% REWORK ON TICKETS
EDUCATION: SYSTEMS ANALYSIS AND DEVELOPMENT — UNDB (2023–2025) · INFORMATION SYSTEMS — IFMA (2023–2027)
Stack
BACKEND & DATA
- Node.js
- TypeScript
- Python
- Go
- PostgreSQL
- Redis
- REST APIs
AI & VISION
- RAG
- MCP
- LLM Agents
- pgvector
- Qdrant
- OCR
- YOLOv8
- OpenCV
FRONTEND & MOBILE
- React
- React Native
- Expo
- Angular
- Vite
- Tailwind
- Phaser
CLOUD & DEVOPS
- Google Cloud Run
- Docker
- GitHub Actions
- Linux
- Supabase
- Stripe Connect