Skip to main content
Roney Lima do NascimentoRN
Open to opportunities

Roney Lima do Nascimento

@roneylimadonasciment

I build production-grade LLM/RAG systems, grounded in pure math and 16 years of Python.

Brazil
Message

What I'm looking for

I’m looking to build secure, production-grade LLM/RAG systems with measurable educational impact—combining rigorous pure-math foundations, hands-on deployment, privacy/ethics, and strong integration into real workflows.

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

CL
Current

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.

CL
Current

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.

Colégio São Luís logoCL
Current

Teacher of IBDP Mathematics Higher Level

May 2026 - Present (2 months)

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

Colégio São Luís logoCL
Current

Teacher of Applied Generative AI

May 2026 - Present (2 months)

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

SS

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.

St. Paul's School, Sao Paulo logoSP

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

SS

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.

St. Paul's School, Sao Paulo logoSP

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.

Colégio Anglo Vargem Grande Paulista logoCP

Professor de Matemática

Jun 2023 - Feb 2024 (8 months)

📚🔢 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

Cursinho Popular Clarice Lispector logoCL

Professor de Matemática

Feb 2023 - Feb 2024 (1 year)

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

CA

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.

CA

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.

UP

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.

CB

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) logoUU

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) logoUU

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.

UP

USP - Universidade de São Paulo

Licenciatura Plena em Matemática, Matemática

2010 - 2013

Stanford University logoSU

Stanford University

How to Learn Math For Teachers, Mathematics Education

2019 -

Course for teachers: How to Learn Math (2019).

UP

USP - Universidade de São Paulo

Mestre em Ciências, Matemática

2014 - 2017

Universidade de São Paulo (USP) logoUU

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.

IB

International Baccalaureate

Curso MYP Categoria 3 de Matemática, Matemática

2019 - 2019

Curso MYP categoria 3 de matemática.

SU

Stanford University

Math , Matemática

2019 - 2019

How to Learn Math For Teachers

IB

International Baccalaureate

MYP CAT 2 Mathematics, Matemática

2019 - 2019

Curso MYP categoria 2 de matemática do IB.

PP

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.

IT

ITEDUC

Professor na Era Digital, Teacher Education and Professional Development

2021 - 2021

Curso de formação de professores na era digital.

FV

FGV - Fundação Getulio Vargas

Matemática Financeira, Financial Mathematics

2021 - 2021

Curso de matemática financeira com aplicações e práticas educativas.

IS

Instituto Singularidades

Metodologias Ativas de Aprendizagem

2021 - 2021

Curso de metodologias oferecido pelo Instituto Singularidades.

IB

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

SU

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.

IB

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

UP

USP - Universidade de São Paulo

Doctor of Philosophy - PhD, Pure Mathematics

2024 - 2028

Get 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!

Sign up
Himalayas profile for an example user named Frankie Sullivan