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Leonardo – Python, LLM, AI agent development, experts in Lemon.io

Leonardo

From United Kingdom (UTC+1)flag

AI Engineer|Senior
Machine Learning Engineer|Senior
MLOps Engineer|Senior
Data Engineer|Senior

Leonardo – Python, LLM, AI agent development

Leonardo is a senior ML/AI engineer with strong expertise in Python, SQL, NLP, LLM evaluation, and pragmatic MLOps. He has led the design and deployment of production-grade NLP and LLM pipelines, including evaluation frameworks and agentic AI systems. His background includes architectural leadership, mentoring, and direct client communication. Feedback highlights his clear communication, product-first mindset, and hands-on engineering approach.

18 years of commercial experience in
Accounting
Construction
Scientific research
Financial asset management
Main technologies
Python
7 years
LLM
2 years
AI agent development
2 years
Machine learning
7 years
MLOps
7 years
SQL
18 years
PyTorch
5 years
FastAPI
7 years
Additional skills
MLflow
Data annotation
AWS
NLP
Pandas
NumPy
Java
LLM evaluation
LLM benchmarks
Scikit-learn
Tensorflow
Keras
Kafka
Direct hire
Possible
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Experience Highlights

Senior Software Engineer I
Jan 2026 - Ongoing5 months
Project Overview

A platform for real-time anomaly detection and monitoring of connected vehicle data, enabling automated identification of abnormal behavior and improving operational reliability through advanced data analysis.

Responsibilities:
  • Architected and launched the Anomalous Stops detection platform, processing approximately 20M trips per day;
  • Drove approximately $1M in annual cost savings through strategic platform migration initiatives;
  • Released ML-enabled features to major fleet customers, averaging 5K+ vehicles.
Project Tech stack:
Golang
AWS
PostGIS
Senior Software Engineer
Dec 2012 - May 202613 years 4 months
Project Overview

Built a construction project management platform for tracking budgets, expenses, revenue, and project progress, providing end-to-end visibility into financial and operational performance throughout the project lifecycle.

Responsibilities:
  • Developed the foundational system architecture and code patterns of a construction project management platform;
  • Built the early stages of a successful platform for managing construction works and payroll;
  • Designed frameworks and tooling that enabled the engineering team to develop 2x faster.
Project Tech stack:
.NET
Microsoft Azure
SQL Server
SQL
C#
Senior Machine Learning Engineer
Jan 2021 - Jan 20265 years
Project Overview

Built an AI-powered platform for extracting, classifying, and analyzing information from news articles, enabling automated processing of unstructured text to generate structured insights and support data-driven decision-making.

Responsibilities:
  • Led the design and development of production-grade NLP and LLM systems for entity extraction from large-scale unstructured data sources;
  • Architected end-to-end ML pipelines covering data collection, annotation, experimentation, fine-tuning, evaluation, deployment, and monitoring;
  • Developed and productionized multilingual PyTorch models across 7 languages;
  • Deployed GPU-backed BERT and coreference models into production, increasing extraction recall from 30% to 50%;
  • Led technical decisions for ML platform initiatives across product, data, and engineering teams;
  • Designed agentic AI platforms, including ground-truth generation, evaluation frameworks, fine-tuning, and release processes;
  • Mentored engineers on ML engineering practices and scalable system design.
Project Tech stack:
PyTorch
LLM
AI agent development
Kubernetes
AWS
CI
CD
Pandas
NumPy
Python
Java
SQL
BERT
NLP
MLOps
Senior Software Engineer
Nov 2018 - Jan 20212 years 2 months
Project Overview

Built an AI and machine learning platform for automated extraction, classification, and analysis of information from news articles, transforming unstructured content into structured data for downstream processing and decision-making.

Responsibilities:
  • Integrated machine learning models into high-throughput streaming services;
  • Re-architected data streaming platforms, doubling extraction throughput;
  • Led migration of ML-derived datasets into centralized cloud-based data platforms;
  • Collaborated with ML engineers and data scientists to operationalize production models.
Project Tech stack:
Machine learning

Education

2012
Computer Science
Bachelor’s Degree

Languages

Portuguese
Advanced
English
Advanced

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