gabriel martins
Lead AI Scientist | Semantic AI & Knowledge Graphs
Salary / Daily rate
São Paulo, State of São Paulo, Brazil
Freelance
Languages
About me
Intro
Lead AI Scientist & Ontologist with 6+ years specializing in Knowledge Graphs, LLMOps, and semantic AI architectures. Engineered end-to-end RAG pipelines integrating 30+ databases, dramatically improving knowledge retrieval accuracy. Expert in LLMs, vector databases, and complex data integration for scalable AI solutions.
Work experience
Lead AI Scientist
MycelionFreelance
Mar 2023 - Present
3 years 8 months
Fortaleza - Zone 1, Fortaleza - Ceará, Brazil
Led AI innovation in LLMOps and Hybrid AI; engineered end-to-end RAG pipelines by integrating Knowledge Graphs with LLMs, substantially increasing knowledge retrieval accuracy and system interoperability.
Semantic AI Architect
Cidacs Fiocruz
Jan 2022 - Dec 2022
1 year
Salvador, State of Bahia, Brazil
Architected and executed the semantic integration of 30+ large, heterogeneous relational databases from the Brazilian Ministry of Health, establishing a unified Knowledge Graph layer for advanced discoverability.
École des Mines de Saint-Étienne
Apr 2020 - Dec 2021
1 year 9 months
Saint-Étienne, France
AI Research Engineer
Nov 2020 - Dec 2021
1 year 2 months
Saint-Étienne, France
Investigated and defined benchmarking strategies for semantic interoperability challenges within complex Internet of Things (IoT) and Web of Things (WoT) scenarios.
Semantic AI Architect
Apr 2020 - Oct 2020
7 months
Saint-Étienne, France
Developed and implemented a core knowledge model and API architecture to support dynamic service composition and general-purpose queries for urban transportation systems.
AI Research Engineer
Université Grenoble Alpes
Jun 2018 - May 2019
1 year
Grenoble, France
nvestigated and created a multi-dimensional spatio-temporal Knowledge Model (QB4ST, GeoSPARQL) from heterogeneous environmental datasets to support expert decision-making in climate analysis.
R&D Project Manager
Instituto Federal de Educação, Ciência e Tecnologia do Ceará
Nov 2017 - May 2018
7 months
Aracati, Ceará, 62800-000, Brazil
Managed a distributed R&D team (Backend, Mobile, Hardware) to implement a unified service and user data model via Semantic Web/Graph architecture.
Instituto Federal de Educação, Ciência e Tecnologia do Ceará
Aug 2014 - Mar 2017
2 years 8 months
Fortaleza - Zone 1, Fortaleza - Ceará, Brazil
Msc Thesis
Aug 2014 - Mar 2017
2 years 8 months
Fortaleza - Zone 1, Fortaleza - Ceará, Brazil
Investigated, Developed, and contributed in the field of Ontologies (knowledge-graphs) applied on Healthcare, enhancing decision-making processes with data integration for risk analysis in public health system related to maternal death risk on Brazilian public Health.
Professor
Mar 2016 - May 2016
3 months
Aracati, Ceará, 62800-000, Brazil
Disciplines taught: AI (ML, Neural Networks) and Advanced Databases (SQL, Semantic Web, Triplestores).
DevOps Engineer
(Instituto Federal de Educação, Ciência e Tecnologia do Ceará) - NASH
Sep 2013 - Oct 2014
1 year 2 months
Fortaleza - Zone 1, Fortaleza - Ceará, Brazil
Provided foundational experience in peripheral application development for ERP and web applications
DevOps Developer
Horizonte Technology System
Oct 2011 - Oct 2013
2 years 1 month
Fortaleza - Zone 1, Fortaleza - Ceará, Brazil
I've worked on JAVA, C, Python, and Java FX in order to develop peripherical softwares for an ERP.
Técnico de suporte de helpdesk
SEBRA
Apr 2011 - Oct 2011
7 months
Fortaleza - Zone 1, Fortaleza - Ceará, Brazil
Education
Université Grenoble Alpes
Doctor in Computer science
2018 - 2019
2 years
Instituto Federal de Educação, Ciência e Tecnologia do Ceará
Mestrado em Ciências da Computação
2015 - 2017
3 years