Resume
Aron Ifanger Maciel
Chief Technology Officer (May 2025)
São José dos Campos, São Paulo, Brazil
Contact
Email:-LinkedIn: www.linkedin.com/in/aronifanger
Summary
I am the Chief Technology Officer (CTO) at Precision Data, responsible for leading company-wide
technology strategy, managing Azure cloud resources, overseeing legal and compliance aspects of
tech operations, and driving cross-functional alignment between business goals and technical
execution. In this role, I also lead strategic partnerships, coordinate internal security training, and
manage high-impact contracts, including those with Microsoft.
Previously, I served as Head of AI, where I led innovative projects in the healthcare sector, leveraging
technologies such as LangChain, ChatGPT, Anthropic, and CrewAI. My core expertise lies in Natural
Language Processing (NLP), prompt engineering, LLM agents, RAG (Retrieval-Augmented
Generation), vector databases, and semantic layer design. With over 10 years of experience in data
science and AI, I combine deep technical knowledge with leadership in scaling intelligent systems
and delivering business value through generative AI.
Experience
Precision Data Engineering & Data Science
Chief Technology Officer
January 2025 – Present (São Paulo, Brazil - remote)
Expanded Responsibilities:
• Oversight of company-wide technology strategy and operations.
• Governance of infrastructure and cloud architecture.
• Cross-functional collaboration with business leaders to define and align company goals.
Key Responsibilities:
• Reviewed legal and regulatory requirements in contracts.
• Maintained direct communication with the legal team to revise internal policies and ensure
compliance.
• Coordinated and delivered internal training on information security and data protection.
• Oversaw contract renewal and partner negotiations, including Microsoft licensing and enterprise
agreements.
• Managed strategic partnerships with data-sharing organizations and integration partners.
• Led goal-setting initiatives with other departments to ensure alignment between technology and
business strategy.
• Managed Azure resource usage to ensure cost efficiency, scalability, and operational excellence.
Head of AI
August 2023 – December 2024 (São Paulo, Brazil - remote)
Tech Stack: LangChain, ChatGPT, Groq, Anthropic, Azure ML, Llama, CrewAI, LLM Agents, Vector
Databases, RAG, Semantic Layer
Key Responsibilities:
• Led the development of AI functionalities in healthcare products.
• Drove the adoption of LLM Chains, RAG, and Agents, primarily using LangChain and CrewAI for task
automation and efficiency.
• Spearheaded prompt engineering, model evaluation, and fine-tuning strategies.
• Regularly tested and implemented various AI models, with strong emphasis on ChatGPT and
Anthropic.
• Managed a high-performance remote AI team, aligned with company OKRs and agile
methodologies.
Ambev
Lead Data Scientist
September 2022 – August 2023 (São Paulo, Brazil - remote)
• Introduced LLMs in the development of social media data analysis for identifying quality issues in
products.
• Led the adoption of NLP and AI solutions, including prompt engineering and model implementation
in key projects.
• Standardized methodologies and supervised the development of advanced data science models.
• Drove the integration of large-scale data solutions across procurement and supply departments.
Semantix
Data Science Specialist
January 2019 – August 2020 (São Paulo, Brazil)
• Led NLP model development for the legal sector, creating a proprietary legal document
classification tool.
• Managed the design and implementation of machine learning models to address challenges in
patent data analysis.
Data Scientist
May 2016 – June 2018 (São Paulo, Brazil)
• Developed machine learning models for Banco Next, focusing on transaction classification and
churn prediction.
• Utilized AWS tools such as Athena, S3, and Jupyter for developing data pipelines and ML models.
Education
MSc in Computer Science (Intelligent Systems)
Universidade Federal de São Paulo (UNIFESP), 2016
BSc in Computational Mathematics
Universidade Federal de São Paulo (UNIFESP), 2014
CS224N: Natural Language Processing with Deep Learning
Stanford Online, 2021, August
