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Lucas G.

Lucas G.

AI & Machine Learning Engineer · Senior

Brazil · Rate on request

Professional Overview

I build LLM systems that survive production — SLAs, compliance, legacy stacks. At Serasa Experian (FTSE 100), architected an enterprise AI platform on MCP, serving 300+ engineers. 6 years backend: TypeScript/Node.js, C#/.NET, Java. RAG, agents, LLM orchestration. English C1. UTC-3, overlaps US/EU hours. Open to remote full-time or B2B contract.

Intro

Experience

Company
Serasa Experian (Experian plc)
Oct 2025 – Nov 1111
Role title
Software Engineer II (Backend)

AI Expertise

AI & Machine Learning Engineers Automation & AI Workflows

Skills

Python PyTorch RAG Prompt Engineering

Employment Type

Full-time

Description of Responsibilities

  • Architected Codebuddy, enterprise AI platform on MCP (Model Context Protocol)
  • Delivered LLM-powered skills into any IDE, standardized to company policy
  • Built stack-specific AI assistants, PSA automation, and compliance workflows
  • Build Java and Python backend services for high-volume credit systems (LGPD)
  • Partner with Product, Data, and Risk teams on credit-decision APIs

Key Achievements / KPIs

  • Drove platform adoption to 300+ engineers org-wide
  • Innersource community: 10–15 contribution requests/week
Company
Foursys
Nov 2023 – Oct 2025
Role title
Software Engineer (Backend)

AI Expertise

Automation & AI Workflows Data Science & Analytics

Skills

Python Azure SQL

Employment Type

Full-time

Description of Responsibilities

  • Architected scalable services and APIs in C#/.NET Core and Node.js/TypeScript
  • Optimized SQL Server databases and queries for large-scale data operations
  • Mentored junior developers and led code reviews, reducing technical debt
  • Delivered end-to-end features (.NET backend + React) with product and UX teams
Company
Backend Engineer (Node.js) - Contract
Jul 2023 – Sep 2023
Role title
KRUZER

AI Expertise

Automation & AI Workflows

Skills

Python AWS

Employment Type

Full-time

Description of Responsibilities

  • Delivered RESTful APIs in TypeScript/Node.js with SQL Server and MongoDB
  • Containerized services with Docker/Kubernetes, enabling CI/CD pipelines

Education

School
UNIPDS
Jun 2027 – Jun 2027
Degree / Program
Postgraduate Program in AI Engineering

Field of Study: AI Engineering

School
Facens
Jan 2019 – Dec 2023
Degree / Program
Bachelor's Degree in Computer Engineering

Field of Study: Computer Engineering

Areas of Expertise

AI & Machine Learning Engineers

Design, train, and ship production ML models — from data pipelines to model inference at scale. Covers supervised learning, neural networks, LLM integration, and model optimisation.

NLP & Prompt Engineering

Build natural language processing systems, fine-tune large language models, and craft reliable production prompts for AI-powered products.

AI Product & Strategy

Translate AI capabilities into product roadmaps, define success metrics, and drive adoption across engineering and business teams.

Open to

Full-time Contract

Skills

Experience Level

Senior

Current location

Brazil

Time Zone

Sao Paulo UTC-3

Primary Work Language

Portuguese

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