Lucas Cruz
Professional Experience
Senior Machine Learning Engineer, Hurb
Dec 2021 – Sept 2024 (2 years and 9 months)
- Leadership: Directed Hurb's experimentation program, fostering a culture of innovation and data-driven decision-making.
- Collaboration: Worked cross-functionally with product, engineering, and data science teams to implement scalable experimentation solutions (feature flags, A/B tests, and multi-armed badint algorithms).
- Technical Expertise and Innovation: Led the project to employ Large Language Models to solve multiple tasks in the legal department, including to predict civil lawsuit outcomes with 83% accuracy in production.
Data Scientist (Internship), Murabei
Oct 2020 – April 2021 (7 months)
- Model Development: Designed and trained generalized linear and ensemble models for SME credit analysis using scikit-learn.
- Deployment: Model deployed through API gateway and serverless cloud computing in Google Cloud Platform.
R&D Engineer (Internship), TechnipFMC
May 2021 – Oct 2021 (7 months)
- Hardware Design: Designed PCBs for an underwater robotic manipulator, ensuring robust power and signal integrity.
Research Experience
Undergraduate Researcher, Signal Processing Lab, UFRJ
August 2020 – December 2021 (1 year and 5 months)
- Developed a Computer-Aided Diagnosis system for tuberculosis from chest X-ray images, improving diagnostic accuracy to 86%.
- Implemented a Hierarchical Mixture of Experts model using SVMs for image quality assessment in public health digitization, achieving F1 of 0.91.
Undergraduate Researcher, Control and Automation Lab, UFRJ
Mar 2018 – Jun 2019 (1 year and 4 months)
- Designed electronic systems for a Remotely Operated Vehicle (ROV) for underwater exploration.
- Prototyped PCBs for subsea use with Altium Designer, optimizing underwater thruster controls, cameras, and sensors for precision and reliability.
- Developed C++ routines for ROV communication and control, enabling SPI data interfacing between AVR microcontrollers to allow vehicle coordination.
Extracurricular Activities
Team Lead, MinervaBots Robotics Team
April 2017 – January 2020 (2 years and 9 months)
- Led the team to win 17 trophies in 6 categories over three years.
- Secured second place among American teams in the autonomous category at the 2019 All Japan Robot-Sumo Tournament in Tokyo.
- Managed a cross-functional team of mechanical, control and electrical engineers in developing an autonomous sumo robot.