Roney Lima do Nascimento
@roneylimadonasciment
I build production-grade LLM/RAG systems, grounded in pure math and 16 years of Python.
What I'm looking for
I’m an AI Solutions Expert designing and deploying production-grade ML systems at scale, with hands-on experience across the full LLM lifecycle. I fine-tune models with LoRA (including Mistral-7B adapters published on HuggingFace), build embedding generation pipelines, and implement RAG architectures with vector stores and semantic retrieval.
My production ML work includes IBPREDICTIONS—where I combine XGBoost, LightGBM, and CatBoost with Optuna hyperparameter tuning, an ElasticNet meta-learner, and Conformal Prediction for calibrated uncertainty quantification. I also build Paulean AI (a RAG assistant for structured and unstructured enterprise data) and St. Paul’s Marker (OCR plus NLG-based formative feedback at batch inference scale), and I develop the AI Teachers platform used by 15,000+ educators monthly.
I’m currently a PhD candidate in Pure Mathematics at the University of Sao Paulo (USP), and I bring deep theoretical command of linear algebra, optimisation, and probability that underpins Transformers, attention mechanisms, and gradient-based learning. I translate that foundation into practical engineering decisions so systems are both effective and trustworthy.
Alongside R&D, I teach Applied Generative AI and I develop “secure, classroom-ready AI” that reduces staff workload, personalises learning, and strengthens data-informed decision-making. I lead pilots and impact evaluation, integrate AI with iSAMS/LMS/SharePoint, embed privacy, ethics, and safeguarding in every solution, and I share my work through my book “Generative AI for Teachers,” peer review for Springer Nature (EAIT) and EDM 2026, and speaking as a confirmed keynote at ICAILY 2026.
Experience
Work history, roles, and key accomplishments
IBDP HL Maths Teacher
Colégio São Luís
May 2026 - Present (2 months)
Teacher of IB Diploma Programme Mathematics at Higher Level for Colégio São Luís, supporting DP1 and DP2 students through the full two-year HL syllabus and assessment preparation. Focuses on precision in research-style mathematics practice translated into classroom instruction.
Applied Generative AI Teacher
Colégio São Luís
May 2026 - Present (2 months)
Teacher of Applied Generative AI at Colégio São Luís, leading the elective programme in IA Aplicada with hands-on learning using frontier large language models. Translates generative AI capability into pedagogy while maintaining assessment integrity, ethical guardrails, and Jesuit education values.
Teacher of IB Diploma Programme Mathematics at Higher Level for Colégio São Luís, working with DP1 and DP2 students through the full two-year HL syllabus, internal assessment and preparation for external examinations. The role demands the precision of a research mathematician translated into classroom practice, supporting students who plan to pursue mathematically intensive university courses in B
Teacher of Applied Generative AI at Colégio São Luís, one of São Paulo's flagship Jesuit schools. I lead the elective programme in IA Aplicada, designing hands-on classroom experiences with frontier large language models, and translating state-of-the-art generative AI capability into pedagogical practice that respects assessment integrity, ethical guardrails and the Jesuit tradition of education i
Pursuing a PhD in Pure Mathematics
Feb 2024 - Present (2 years 5 months)
Pursuing a PhD in Pure Mathematics
PhD Candidate, Pure Math
USP - Universidade de São Paulo
Feb 2024 - Present (2 years 5 months)
Pursuing a PhD in Pure Mathematics at the University of São Paulo (USP).
AI Solution Developer (Whole)
St. Paul's School
Feb 2025 - Jun 2026 (1 year 4 months)
Designed and delivered secure, classroom-ready AI solutions to reduce staff workload, personalize learning, and support data-informed decision-making. Led pilots and impact evaluation, integrating AI with iSAMS, LMS, and SharePoint, and built RAG assistants and predictive dashboards while training staff on privacy, ethics, and safeguarding.
AI Solution Developer (Whole School)
Feb 2025 - Jun 2026 (1 year 4 months)
I design and deliver secure, classroom-ready AI that reduces staff workload, personalises learning and strengthens data-informed decision-making. I lead pilots and impact evaluation, integrate AI with iSAMS, LMS and SharePoint, automate reporting and scheduling, and build RAG assistants and predictive dashboards for pupil progress and early intervention. I train staff and embed privacy, ethics and
IBDP HL Maths & KS3/IGCSE
St. Paul's School
Dec 2023 - May 2026 (2 years 5 months)
Developed rigorous and engaging instruction in IBDP Higher Level Mathematics, KS3, and IGCSE Mathematics at St. Paul's School. Emphasized deep conceptual understanding and problem-solving, collaborating with colleagues to strengthen the mathematics curriculum.
IBDP Higher Level Mathematics Teacher & KS3/IGCSE Educator
Dec 2023 - May 2026 (2 years 5 months)
• Developed engaging and rigorous instruction in IBDP Higher Level Mathematics, KS3, and IGCSE Mathematics at St. Paul's School.
• Focused on fostering deep conceptual understanding and problem-solving skills in students.
• Achieved a significant improvement in student performance and engagement in mathematics.
• Collaborated with colleagues to enhance the overall mathematics curriculum.
📚🔢 Passionate about unraveling the mysteries of numbers and sharing knowledge, I am honored to serve as a Mathematics Teacher at the renowned Anglo Vargem Grande Paulista School. 💡🎓
With a solid journey in the world of education, my mission is to inspire and empower the next generation of bright minds to master the universal language of numbers and elevate their analytical skills. My pedagogical
Committed to the mission of promoting education as a transformative and egalitarian force, I am honored to serve as a Volunteer Mathematics Teacher at the Clarice Lispector Popular Preparatory School.
At the Clarice Lispector Popular Preparatory School, I witness the powerful connection between education and social change. Each student who progresses in their educational journey becomes an agent o
Program Mentor - Cientista Aprendiz
Colégio Dante Alighieri
Jan 2022 - Feb 2024 (2 years 1 month)
Provided guidance for pre-scientific initiation research in the Apprentice Scientist (Cientista Aprendiz) programme at Colégio Dante Alighieri.
Professor Orientador do Programa Cientista Aprendiz
Jan 2022 - Feb 2024 (2 years 1 month)
Guidance for Pre-Scientific Initiation research in the Apprentice Scientist Program.
Teacher of elective courses in Financial Education and Investments: strategies for decision-making.
Finance Education & Investment Teacher
Colégio Dante Alighieri
Jan 2021 - Jan 2023 (2 years)
Taught elective courses in Financial Education and Investments at Colégio Dante Alighieri, covering strategies for decision-making.
Professor de matemática do ensino médio na modalidade online, presencial e hibrida.
Mathematics & Logic Teacher
Escola Internacional de Alphaville
Jan 2016 - Jan 2020 (4 years)
Provided mathematics and logic lessons for middle and high school students, tailored to individual learning needs and curriculum requirements.
Offering mathematics and logic lessons tailored for students in middle and high school, focusing on individual learning needs and curriculum requirements.
Offering mathematics and logic lessons tailored for students in middle and high school, focusing on individual learning needs and curriculum requirements.
Preparatory course for ITA. Classes every Saturday from 8:00 AM to 12:00 PM at the Objetivo unit on Paulista Avenue.
Pre-Vestibular (ITA) Math Teacher
Curso Objetivo
Feb 2015 - Dec 2015 (10 months)
Taught in a preparatory (pré-vestibular) course for ITA at Curso Objetivo, with classes held on Saturdays at the Objetivo unit on Paulista Avenue.
Professor do Cursinho de matemática Objetivo, atuando em diversas unidades na capital paulista.
Cursinho Objetivo Math Teacher
Curso Objetivo
Feb 2014 - Dec 2015 (1 year 10 months)
Taught mathematics in the Cursinho de matemática Objetivo across multiple units in São Paulo’s capital.
Professor Bolsista
May 2013 - Apr 2014 (11 months)
Research on teaching Probability through games, in partnership with the University of Oxford for a project led by Professor Terezinha Nunes.
CAPES Research Teaching Fellow
CAPES
May 2013 - Apr 2014 (11 months)
Conducted research on teaching probability through games in partnership with the University of Oxford for a project led by Professor Terezinha Nunes.
Teaching classes for middle school students.
Middle School Math Teacher
Diretoria de Ensino Norte 2
Feb 2012 - Feb 2014 (2 years)
Taught classes for middle school students.
Math 2000 Exhibition. Assisting students of all ages to facilitate the understanding of various mathematical topics
Math Exhibition Expositor
Universidade de São Paulo
Jan 2010 - Dec 2013 (3 years 11 months)
Worked as an exhibitor for Math 2000 exhibition, assisting students of all ages in understanding various mathematical topics.
Mathematics classes for pre-university entrance exam students.
Math Teacher (Cursinho Popular)
Cursinho Popular da Brasilândia
Jan 2004 - Feb 2010 (6 years 1 month)
Provided mathematics instruction for pre-university entrance exam students at Cursinho Popular da Brasilândia.
Education
Degrees, certifications, and relevant coursework
Universidade de São Paulo (USP)
Doctor of Philosophy (PhD), Pure Mathematics
2024 -
PhD candidate in Pure Mathematics at the University of São Paulo (USP), starting Feb 2024.
Universidade de São Paulo (USP)
Licenciatura Plena em Matemática, Mathematics
2010 - 2013
Licenciatura Plena in Mathematics at the University of São Paulo (USP) from 2010 to 2013.
USP - Universidade de São Paulo
Licenciatura Plena em Matemática, Matemática
2010 - 2013
Stanford University
How to Learn Math For Teachers, Mathematics Education
2019 -
Course for teachers: How to Learn Math (2019).
USP - Universidade de São Paulo
Mestre em Ciências, Matemática
2014 - 2017
Universidade de São Paulo (USP)
Master of Science (MSc), Mathematics
2014 - 2017
MSc in Mathematics at the University of São Paulo (USP) from 2014 to 2017.
International Baccalaureate
Curso MYP Categoria 3 de Matemática, Matemática
2019 - 2019
Curso MYP categoria 3 de matemática.
Stanford University
Math , Matemática
2019 - 2019
How to Learn Math For Teachers
International Baccalaureate
MYP CAT 2 Mathematics, Matemática
2019 - 2019
Curso MYP categoria 2 de matemática do IB.
Pontifícia Universidade Católica de São Paulo
Economia Comportamental e Tomada de Decisão, Finance
2021 - 2021
Curso brilhantemente lecionado pela professor Paula Sauer sobre tomada de decisão, Nudges e ruídos.
ITEDUC
Professor na Era Digital, Teacher Education and Professional Development
2021 - 2021
Curso de formação de professores na era digital.
FGV - Fundação Getulio Vargas
Matemática Financeira, Financial Mathematics
2021 - 2021
Curso de matemática financeira com aplicações e práticas educativas.
Instituto Singularidades
Metodologias Ativas de Aprendizagem
2021 - 2021
Curso de metodologias oferecido pelo Instituto Singularidades.
Ibmec
Master of Business Administration - MBA, Finanças
2022 - 2023
O MBA em Finanças do Ibmec tem o objetivo de ampliar a capacidade do participante de compreender, dominar e aplicar conceitos e práticas contemporâneas na área financeira. Por meio de uma abordagem prática, o curso proporciona as condições para que o participante utilize as principais ferramentas e consiga avaliar seus efeitos práticos no âmbito da gestão financeira nas organizações, permitindo el
Stanford University
Mathematics
2021 - 2023
Transformed by Dr. Jo Boaler's Mathematical Mindset Course at Stanford!
Thrilled to share my transformative journey through Dr. Jo Boaler's illuminating course on Mathematical Mindset at Stanford University.
Ibmec
Postgraduate Certificate (Lato Sensu), Leadership
2023 - 2024
Postgraduate Lato Sensu programme (450 hours) focused on leadership, innovation, and technology, with strong emphasis on Artificial Intelligence and emerging digital tools. Covered agile methodologies, data-driven decision-making, People Analytics, and organisational transformation through AI. The course also explored emotional intelligence, ESG strategies, and high-performance team leadership.
A
USP - Universidade de São Paulo
Doctor of Philosophy - PhD, Pure Mathematics
2024 - 2028
Tech stack
Software and tools used professionally
Availability
Location
Authorized to work in
Job categories
Skills
Interested in hiring Roney?
You can contact Roney and 90k+ other talented remote workers on Himalayas.
Message RoneyGet matched with your dream remote job
Sign up now and join over 250,000+ remote workers who receive personalized job alerts, curated job matches, and more for free!
