AVAILABLE FOR OPPORTUNITIES

João
Gameiro

Data Scientist, Machine Learning Engineer, and Cybersecurity Analyst — building at the intersection of threat intelligence, anomaly detection, and security analytics.

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João Gameiro
Lausanne, Switzerland
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01 — ABOUT

Built different.
On purpose.

I'm a Portuguese Data Scientist, ML Engineer, and Cybersecurity Analyst based in Lausanne, Switzerland. I hold a BSc in Data Science, an MSc in Data Science and Business Analytics from Universidade Nova de Lisboa, and a CompTIA Security+ certification.

My work sits at a rare intersection: the analytical rigour of ML engineering applied to threat detection, anomaly identification, and security operations. Three years in tech across Bobst, Toyota Motor Europe, and Leadzai — shipping production ML systems — now combined with deep hands-on security practice.

Proficient across offensive and defensive security, Python, KQL, and data pipelines. Building with Microsoft Sentinel, Defender, and FortiSIEM. Fluent in the language of both data and adversarial thinking.

28+
COUNTRIES VISITED
3+
YEARS IN TECH
4
LANGUAGES SPOKEN
Portuguese
NATIVE
English
C2
Spanish
C1
French
B1
SEC+
COMPTIA CERTIFIED
02 — THE INTERSECTION

Where data science
meets security.

DATA
SCIENCE
CYBER
SECURITY
threat
intel
& ML
ML Anomaly Detection
Unsupervised learning to identify abnormal network behaviour at scale
Threat Intelligence
OSINT + data pipelines to enrich IOCs and map attacker infrastructure
SIEM Analytics
KQL + Python to build detection rules, hunt threats, reduce false positives
Security Data Engineering
Log pipelines, correlation engines, automated alerting infrastructure
03 — SKILLS

Tools & Technologies

SECURITY
Kali Linux Nmap Wireshark Metasploit Burp Suite OSINT Microsoft Defender FortiSIEM Autopsy Steghide ELK Stack Hydra Netcat
DATA & ML
Python KQL SQL TensorFlow PyTorch Pandas Scikit-learn NLP / NER XGBoost Power BI Tableau R NumPy
CLOUD & SIEM
Microsoft Sentinel Azure FortiSIEM Microsoft Defender KQL (Sentinel) Docker Git Linux Raspberry Pi
04 — EXPERIENCE

Professional Journey

JAN 2026 — PRESENT · LAUSANNE, SWITZERLAND
Cybersecurity Analyst
Independent — Security Research & Lab Practice
Full-time focus on cybersecurity: network reconnaissance, vulnerability assessment, offensive/defensive tooling, SIEM deployment with Microsoft Sentinel and FortiSIEM. CompTIA Security+ certified. Building ML-powered threat detection systems combining data science and security engineering.
DEC 2024 — JAN 2026 · LAUSANNE, SWITZERLAND
Data Scientist / Analyst
Bobst
Advanced manufacturing analytics and industrial ML systems for one of the world's leading packaging machinery manufacturers. Python, Azure, KQL, and data pipelines for production optimisation, predictive maintenance, and operational reporting.
AUG 2023 — AUG 2024 · BRUSSELS, BELGIUM
Data Scientist
Toyota Motor Europe
Automotive production data analysis and ML-driven process optimisation across European manufacturing facilities. KPI modelling, statistical analysis, and cross-functional reporting for operational excellence teams.
JAN 2022 — JUL 2023 · LISBON, PORTUGAL
Machine Learning Engineer
Leadzai
Developed a Natural Language Processing and text mining system to identify common characteristics of high-performing ads across industries — enabling replication of successful patterns for clients. Built end-to-end NLP pipeline covering data collection, feature extraction, and model deployment for production advertising intelligence.
05 — PROJECTS

Selected Work

DATA SCIENCE × SECURITY
ML-Powered Threat Detection Engine
Unsupervised anomaly detection on network logs using Isolation Forest and autoencoders. Ingests data from Kali lab, surfaces behavioural outliers, and pushes structured alerts to ELK Stack SIEM. Bridges ML engineering with real SOC workflows.
↗ github — coming soon
Python Scikit-learn ELK Stack Kali Linux Docker
Status: In progress
001
002
SECURITY
SSH Brute-Force Detection Lab
Simulated SSH brute-force attacks, built Splunk/ELK dashboards with threshold-based alerting and auth.log analysis.
Kali Metasploit Splunk auth.log
↗ github — coming soon
003
SECURITY
Steganography Forensics Lab
End-to-end steganography pipeline: embed payloads in images, detect and extract using Binwalk, Steghide, and ExifTool. Documented steganalysis methodology.
Steghide Binwalk Python Kali
↗ github — coming soon
004
DATA SCIENCE × SECURITY
OSINT Intelligence Pipeline
Automated OSINT tool in Python integrating Shodan, theHarvester, and Holehe to map digital footprints and enrich threat intelligence data.
Python Shodan API Holehe Pandas
↗ github — coming soon
005
DATA SCIENCE
Ad Performance NLP System
NLP and text mining pipeline to identify common characteristics of high-performing ads across industries, enabling replication of successful patterns for clients at Leadzai.
Python NLP Text Mining Scikit-learn
↗ github — coming soon
06 — CONTACT

Let's work together.

Open to cybersecurity analyst roles in Switzerland or remote. Particularly interested in SOC analyst, threat intelligence, and security analytics positions.

email jgameiro77@gmail.com → linkedin linkedin.com/in/joao-gameiroo → github github.com/gameirow →