Luís Sousa, Developer in Lisbon, Portugal
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Luís Sousa

Verified Expert  in Engineering

Data Science and Software Developer

Lisbon, Portugal
Toptal Member Since
July 28, 2022

Luís has been a professional software engineer for 13 years and a data scientist for four focusing on business-oriented Machine Learning projects. He has built data pipelines and high-value narrative-driven dashboards, architected cloud infrastructures, led teams, and lectured on Data Science subjects. He values short feedback loops and maintainable solutions while avoiding tech debt.


Miles in the Sky
Amazon Web Services (AWS), Notion, Git, Agile Workflow, IT Strategy...
Rumos (Universidade Atlântica)
Data Science, Data Scraping
R, Tidyverse, Python 3, Amazon Web Services (AWS),




Preferred Environment

Amazon Web Services (AWS), Python 3, R, Slack, Jira, Notion

The most amazing...

...tool I've developed was a mission-based web learning platform in AWS with built-in analytics, extensible by a team of developers with high quality and uptime.

Work Experience

VP of Engineering

2021 - PRESENT
Miles in the Sky
  • Designed and developed the core infrastructure, architecture, and data workflows.
  • Co-managed the Engineering team with the CTO. Developed a custom workflow for the company stack, enabling async, remote work, and a predictable delivery cadence.
  • Served as the technology gatekeeper, selecting projects with optimal feasibility, time-to-market, and value-added trade-offs.
Technologies: Amazon Web Services (AWS), Notion, Git, Agile Workflow, IT Strategy, Product Management, Slack, Strategy, Data Strategy, Web Scalability, Data Scraping


2019 - PRESENT
Rumos (Universidade Atlântica)
  • Developed materials for courses on Python for Data Science and Data Collection Techniques.
  • Taught live classes to students from six editions (so far) in Python for Data Science or Data Collection Techniques.
  • Engineered production-like environments and datasets to optimize the learning outcomes of students.
Technologies: Data Science, Data Scraping

Lead Data Scientist

2019 - 2022
  • Developed a model to deflect the support portal from opening tickets. Created a propensity-to-expand model for SaaS customers. Generated a real-time lead scoring model with ingestion from multiple systems.
  • Developed a Git-based ETL tool for R, Python, and SQL (Snowflake), gluing together the company's data ecosystem.
  • Oversaw an integrated growth model dashboard, with data ingestion from virtually all the company's systems.
Technologies: R, Tidyverse, Python 3, Amazon Web Services (AWS),, Salesforce Sales Cloud, Marketo, Git, Web Scraping, Data Scraping

Principal Software Engineer

2010 - 2018
  • Designed and developed a holistic field reporting platform for oil & gas inspection services (onshore and offshore), with about 100 daily users. This included hardware integrations.
  • Integrated the platform with existing systems (inventory management system, HRIS, ERP, etc.).
  • Designed and developed Business Intelligence features over the platform as an upsell play.
Technologies: PHP, JavaScript, SQL, Python, Bash Script, C#.NET, DLL

ETL Tool for R, Python, and SQL

The tool consists of an RStudio Connect app in Vue.js, with Flask and Plumber back-ends and Python and R libraries to support specific I/O features. The ETLs themselves run on Docker (via AWS ECS). ETL code is stored on GitHub. The tool handles cost management, monitoring, alarms, logging, and ETL inter-dependencies. The tool's goal was to empower business-savvy but not-so-tech-savvy people to autonomously set up data pipelines. I developed the entire system.


Python 3, R, Snowflake, SQL, Python, PHP, JavaScript, Bash Script, C#.NET


RStudio Shiny


Scikit-learn, Pandas, Tidyverse, Vue, Highcharts, D3.js, Ggplot2,


Data Analysis, Data Cleansing, Data Wrangling, Web Scraping, Data Scraping, Statistics, Analytical Thinking, Programming, Mathematics, Visual Storytelling, IT Strategy, Product Management, Strategy, Data Strategy, Web Scalability, Statistical Methods, Computer Science, Algorithms, Abstract Algebra, DLL


Seaborn, Salesforce Sales Cloud, Slack, Jira, Notion, Git, Mathematica


Amazon Web Services (AWS), Docker, Marketo, RStudio


Agile Workflow, Data Science

2005 - 2007

Master of Science Degree (Thesis Pending) in Informatics and Applied Mathematics

Instituto Superior Técnico - Lisbon, Portugal

2002 - 2005

Bachelor's Degree in Informatics and Applied Mathematics

Instituto Superior Técnico - Lisbon, Portugal

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