Thiago Miguel
ML Engineer · Inatel 2024 · FIAP PG

THIAGOMIGUEL

Specialist in Computer Vision and Deep Learning applied to scalable intelligent systems, from research to production.

Deep LearningComputer VisionMLOpsrPPG · PPG · ECGYOLOv8BiLSTM · AttentionHPC GPUDigital HealthSHAP · LIMEFastAPI · DockerDeep LearningComputer VisionMLOpsrPPG · PPG · ECGYOLOv8BiLSTM · AttentionHPC GPUDigital HealthSHAP · LIMEFastAPI · Docker
About Me

ENGINEERING
WITH REAL
IMPACT

Computer Engineering graduate from Inatel (2024) with academic distinction, 2nd place in class. Postgraduate student in Machine Learning Engineering at FIAP, focused on MLOps, Big Data and production AI.

I build Artificial Intelligence and Machine Learning pipelines to transform data into intelligent systems in production. I work with computer vision, signal processing and Deep Learning models running on high-performance infrastructure, from raw data to deployment.

3+
Years of experience
Class ranking
GPU
HPC in production
AI
Systems in production
Projects

APPLIED
SOLUTIONS

01 / 04
📡

TOI: Vital Signs via Video

Complete pipeline for BPM, SpO₂ and RPM extraction via facial video. rPPG + Deep Learning + Anti-Spoofing on NVIDIA DGX H200.

rPPGMediaPipeFFTGPUAnti-Spoofing
02 / 04

ECG: Morphological Analysis

Advanced digital filtering, R-peak detection and feature extraction. Optuna optimization, ROC-AUC evaluation.

ButterworthP-QRS-TOptunaROC-AUC
03 / 04
🧍

Abdominal Volume 2D

YOLOv8 Transfer Learning for segmentation. 3D geometric modeling from 2D image input.

YOLOv8SegmentationGeometricRegression
04 / 04
🎓

Datathon: Passos Mágicos

Educational risk prediction model with XGBoost and Optuna. ROC-AUC 0.794 on data from 2,845 students. Full stack with FastAPI, Docker and Prometheus.

XGBoostOptunaFastAPIDockerPrometheusLLMOllamaGrafanaRetraining
Deep Dive · Project 01

TOI — VITAL
SIGNS IN
REAL TIME

System for estimating vital signs from facial video using remote photoplethysmography (rPPG) techniques. The pipeline performs facial detection, dynamic segmentation of regions of interest based on 3D landmarks and temporal extraction of color variations associated with blood flow. Signals are processed by spectral filtering and frequency-domain analysis to estimate BPM, SpO₂ and respiratory rate. Execution runs on NVIDIA DGX H200 high-performance infrastructure with real-time inference.

Deep Dive · Project 02

ECG —
MORPHOLOGICAL
ANALYSIS

Morphological analysis pipeline for ECG signals enabling automatic detection of cardiac patterns. The system performs signal preprocessing, identification of P-QRS-T complexes and extraction of morphological features used by machine learning models. Training is optimized with Optuna and evaluation follows a rigorous protocol with stratified cross-validation and metrics such as ROC-AUC and Kappa.

Deep Dive · Project 03

ABDOMINAL
VOLUME
2D → 3D

Abdominal volumetric estimation system from 2D images using computer vision and geometric modeling. The pipeline employs body segmentation based on YOLOv8 with Transfer Learning, enabling a pre-trained model to be adapted for automatic detection and extraction of the abdominal region. From the extracted mask and body contour, volume is estimated by elliptical and semi-ellipsoidal approximations with refined adjustment via non-linear regression. The approach enables fast, non-invasive estimates with potential application in clinical screening.

Deep Dive · Project 04

DATATHON
PASSOS
MÁGICOS

Predictive model of educational risk to identify, at the start of each annual cycle, students most likely to end the year with INDE below 7.0. The system uses XGBoost with hyperparameter optimization via Optuna, achieving ROC-AUC of 0.794 and F1 of 0.617 on the 2024 test set. Infrastructure includes an API with FastAPI, monitoring with Prometheus and Grafana and three automatic layers of data leakage detection. Project developed for the NGO Passos Mágicos using data from 2,845 students over three annual cycles.

Project 01 · TOI System · rPPG Pipeline

VITAL SIGNS FROM FACIAL VIDEO

TOI · ANIMATION
ROI — FOREHEAD
rPPG SAMPLING
ACTIVE
72
BPM
97
SpO₂ %
16
RPM
PPG Signal · Band-pass Filtered
Project 02 · ECG Analysis · Morphological Features

ECG SIGNAL
ANALYSIS

Advanced digital filtering + automatic detection of P-QRS-T complexes + extraction of 40+ cardiac morphological features.

ECG · LEAD II · 25mm/sBW FILTERED
HR: 75 bpmQRS: 88msPR: 162msQT: 380msAUC ROC: 0.94
volume_estimation.py · YOLOv8 + Geometric Modeling
Project 03 · Volume Estimation · YOLOv8 + Geometric Modeling

ABDOMINAL
VOLUME
2D → 3D

ABDOMINAL ROI DETECTED94.2%CONFYOLOv8 · TRANSFER LEARNING · SEGMENTATION
FRONTAL VIEW
W = 82 cma = 41cm
LATERAL VIEW
D = 24 cmc = 24cmb = 28cmSEMI-ELLIPSOID FIT
GEOMETRIC FITTING · ELLIPTICAL APPROXIMATION
V = ½ · (4/3)π · a · b · ca=41b=28c=24
8.4 L
VOLUME EST.
Semi-axes
a41 cm
b28 cm
c24 cm
94% CONFIDENCE
CAPTURE · 1/3
8.4 L
VOLUME
82 cm
WAIST
94%
CONFIDENCE
Pipeline
CAPTURE
ROI EXTRACT
GEOMETRIC FIT
VOLUME EST.
Project 04 · Risk Prediction · XGBoost + Optuna · ONG Passos Mágicos

DATATHON
PASSOS
MÁGICOS

predict_risk.py · 2845 students · cycle 2024
STUDENTINDERISK INDE < 7.0STATUS
PM-22417
50%
✓ OK
PM-10877
50%
✓ OK
PM-33127
50%
✓ OK
PM-09437
50%
✓ OK
PM-27567
50%
✓ OK
PM-16347
50%
✓ OK
0.794
ROC-AUC
0.617
F1 Score
2845
STUDENTS
Stack · XGBoost + Optuna · FastAPI · Prometheus · Grafana
INDE < 7.0LEAKAGE CHECKSTRATIFIED CVMONITORING
Journey

PROFESSIONAL
JOURNEY

With a background in electronics and computer architecture, my career evolved towards the application of Artificial Intelligence and Machine Learning in engineering and research projects, combining technical rigor, data analysis and the development of solutions with real-world impact.

2025 — presentpresenteducation
FIAP

Postgrad in Machine Learning Engineering

MLOps, Big Data and AI in production.

Aug 2024 — presentpresent
Inatel

Machine Learning Specialist

Computer vision, Deep Learning, HPC/GPU (NVIDIA DGX H200) and AI systems in production.

Jul 2021 — Dec 2024
Inatel

Academic Mentoring

Digital Electronics I & II, Computer Architecture and Special Topics I.

2020 — Jul 2024education
Inatel

Computer Engineering

Graduated with academic distinction, 2nd place in class.

Aug 2023 — Jul 2024
Pixel TI

Project Analyst

Embedded systems, data acquisition and IoT projects.

Feb 2023 — Jul 2023
Toodoo

Flutter Trainee

Mobile development, UI/UX and backend integration.

Process

FROM DATA
TO DEPLOY

01
📥

ACQUISITION

Real-time collection via edge sensors. Data structuring and image preprocessing for pipelines.

02
🧠

MODELING

Training Deep Learning architectures focused on high accuracy and low inference latency.

03
⚙️

MLOPS

Packaging, orchestration and continuous monitoring. CI/CD for ML models.

04
📊

UX & PRODUCT

Dashboards that translate complex backends into fluid user experiences.

05
🔍

XAI

LIME/SHAP for prediction transparency. Technical metrics translated into business impact.

Tech Stack

TOOLS
& TECHNOLOGIES

Deep Learning
  • PyTorch / TensorFlow
  • CNNs · RNNs · BiLSTM
  • Attention Mechanisms
  • GANs
  • Transfer Learning
Computer Vision
  • YOLOv8
  • OpenCV
  • MediaPipe Face Mesh
  • Haar Cascade · Dlib
  • Segmentation & ROI
MLOps & Infra
  • FastAPI / Flask
  • Docker · Kubernetes
  • NVIDIA DGX H200
  • MLflow · Optuna
  • CI/CD Pipelines
Data & Signals
  • ECG · PPG · rPPG
  • Butterworth · S-G Filter
  • FFT · Band-pass
  • LIME · SHAP
  • ROC-AUC · Cross-val
Public Presence

BEYOND
CODE

🎤

TECHNICAL TALK

Presentation on applied Artificial Intelligence, cryptocurrencies, DeFi and the impact of intelligent algorithms on the evolution of financial systems.

AI and DeFi · Future of Cryptocurrencies · HackTownView →
📺

HPC/AI INTERVIEW

Interview on NVIDIA DGX H200 infrastructure, GPU architecture, real-time inference pipelines.

HPC & Artificial Intelligence · TV Interview 2024View →
📡

LIVE TOI DEMO

Recorded demo of TOI in action, estimating BPM, SpO₂ and RPM from facial video with the full pipeline running.

TOI Live Demo · Vital Signs via Facial VideoWatch →
📄

TECHNICAL PAPER

Article on the evolution of payment systems in Brazil, from mainframes to PIX and the future with programmable money and decentralized finance.

Article · From Paper to PIX · Inatel BlogRead →

It doesn't matter where you start what matters is how you move forward from there.

Thiago Miguel · ML Engineer

Contact

LET'S
WORKTOGETHER

Open to ML Engineering opportunities, AI consulting and technical collaborations where data and models drive real impact on product or operations.