João Victor Pacheco Dias

Co-founder & CTO

ARB [2026]

Technology company with three areas: education, software development and a research laboratory. Its products include AEO Doctors, a digital presence service for physicians.

Partner & CTO

Lyen [06/2026-Present]

• • Technical leadership of the medical jobs platform
• • Platform architecture and product roadmap

CTO

Spero Science AI [2026-Present]

• • Technical leadership of the platform
• • Architecture and integration of predictive models in production

CTO

WingsAI [02/2025-Present]

• • Vertical AI
• • Micro-SaaS portfolio
• • International expansion

Technology Consultant

Conselho Brasileiro de Oftalmologia [09/2024-Present]

• • Consulting on technology solutions
• • Development of AI guidelines
• • Strategic innovation support

Startup Mentor

Bluefields Aceleradora [05/2019-Present]

Artificial intelligence mentoring.

Head of Artificial Intelligence

IA para Médicos [06/2018-Present]

• • Editor of Artificial Intelligence Futurism news applied to Medicine
• • Workshops about productionizing AI projects

Artificial Intelligence Coordinator

GeekVision - Clinical Hospital, University of São Paulo [05/2017-Present]

• • Supports AI innovation at University of São Paulo's Ophthalmology Clinics Hospital
• • Implemented Convolutional Neural Networks to assist low vision patients on identifying chosen elevators
• • Developed an Eye Drops Identifier with RetinaNet
• • Implemented Dashboards integrated with non relational databases to structure clinics data and deliver on a mobile solution
• • Developed a Dry-Eye disease solution with Neural Networks on Smartphones

Data & Analytics Management

iFood Pago [07/2024-02/2025]

• • Management of transactional data ingestion into the Data Lake using AWS DMS, S3 and PySpark
• • Continuous optimization of Data Lake jobs with AWS EMR and Glue
• • Creation of interactive dashboards for general analysis, anti-money laundering (AML) and fraud detection

Head of Data & Analytics

Zoop [11/2022-07/2024]

• • Data Lake expansion
• • Built data products
• • Data contracts and data quality

Senior Vice President of Data Science and Analytics

Captalys [08/2020-10/2022]

• • Structured the areas and set up the Analytics, BI, Data Science, Portfolio Monitoring and Data Engineering teams
• • Led the transformation of the company into an AI-Ready company
• • Implemented: the Data Lake, the Machine Learning model deployment environment, GraphQL to unify the API queries and the models documentation
• • Designed systems focused on scale, reproducibility and automation

Lead Data Scientist

NTT DATA [08/2019-07/2020]

• • Planned and executed large data science projects
• • Organized the career development of the Data Scientists at the company
• • Participated in management meetings to help establish data roadmap and strategies
• • Built a great team by both recruiting great talent and helping them grow
• • Implemented DataPrivacyOps with Federated Learning, Differential Privacy and Multi-party Computation

Data Scientist

NTT DATA [08/2017-08/2019]

• • Coordinated NTT DATA Machine Learning Community Americas
• • Led the Data Science team on publishing research papers
• • Spread AI culture and helped attracting more talent to the company
• • Supervised Neural Networks architecture framework implementation
• • GAN architectures for data augmentation
• • Automatic documents classification with ELMO + BI-LSTM + CNN + CRF
• • Developed a hybrid model for Automated Offline Handwritten Signature Verification on checkbooks using Convolutional Networks
• • Stock price estimation using LSTM + Attention
• • Object Detection, Recognition and Segmentation
• • Face Recognition, Alignment and De-identification
• • Developed a pedestrian tracking surveillance on Raspberry Pi 3
• • Developed a Retrieval-based banking chatbot on Facebook Messenger with Tensorflow

Statistician

NIC.br [01/2016-08/2017]

• • Developed an automated and optimized system focused on ensuring Brazil's complex Internet Traffic Measurement System database
• • Implemented prototypes of Disclosure Control Methods for MicroData databases

Statistical Analyst

Fundação Getúlio Vargas [01/2014-12/2015]

• • Created the sentiment analysis model for political debate in social media
• • Developed a spam filtering machine learning model applied to text data and Twitter account attributes
• • Co-implemented social network graphs framework, which illustrated major national and international newspapers, covers such as the Financial Times
• • Co-implemented a Bayesian spatial model using Twitter data applied on calculating ideological ideal points for legislative actors in Brazil

Trainee

Fundação Getúlio Vargas [2013-2014]

• • Developed a social Twitter bots identifier through NLP methods and model ensembling
• • Co-implemented social network graphs framework using Gephi and R packages
• • Created R Shiny visualisations for Urban Mobility

Co-founder

estatisti.CO [12/2012-12/2013]

In 2012 he co-founded www.estatisti.co, a statistics website with news, career tips, Big Data, theoretical statistics, scientific articles, biographies and job openings. It quickly became one of Brazil's best-known statistics websites.

External Journalism Operator

Rede Globo [07/2008-09/2009]

Acted in aid of adjustment of satellite signals from mobile units of telejournalism, color correction, equipment assembly and lighting for journalism outdoors production.