Sebastián Sarmiento

Curriculum Vitae

CV

Learning Scientist · Curriculum Engineer · EdTech Product Strategist

Skills

Measurement & Analytics
Item Response Theory (IRT) · Bayesian Knowledge Tracing (BKT) · Educational Data Mining (EDM) · psychometrics · learning analytics · assessment & item design
Curriculum & Learning Science
mastery-based learning · curriculum design · IB MYP · ESSA evidence tiers · instructional design
Product & Systems
product discovery · system design · automated quality gates · experimentation · data visualization
Technical
Python · SQL · R · LaTeX · Next.js · Firebase · AWS Bedrock · LLM / AI pipelines

Experience

AI-Driven Math Learning Strategist, HS Math DRI · Alpha School

2025 – Present

High-school math research, AI-assisted content, and the quality gates that keep it honest.

  • Built the Alpha HS Math Hub (Next.js, Firebase, AWS Bedrock): a research platform of 19 investigations graded by ESSA evidence tiers (I–IV).
  • Shipped a SAT-prep app to production: an AI-generated, hand-curated bank of 700+ verified items.
  • Institutionalized quality as automated build gates — a “derive-the-truth” check recomputes every answer and fails the build on mismatch.
  • Designed a cohort / sub-rung scaffolding engine so difficulty is a calibrated property, not a label.
  • Hardened the platform’s student-data pipelines — securing 42 unauthenticated routes so learner records stay protected, with zero production vulnerabilities.

Co-founder (part-time) · MACT — EdTech

2025 – Present

An early-stage Chilean EdTech for data-driven, personalized mathematics learning.

  • Founded the company and set its measurement and curriculum direction.
  • Designed the evidence model behind personalization — what a recommendation is allowed to assume about a learner.

Curricular Strategy Lead & Mathematics Coordinator — Middle Section · Craighouse School

2024 – 2025

IB MYP leadership, performance strategy, and data-informed instruction.

  • Led the entire Middle Section mathematics program under the IB MYP framework, ensuring curricular alignment and pedagogical consistency.
  • Supervised the teaching team and designed data-informed strategies to lift attainment and conceptual understanding.
  • Certified in Mathematics (CAT.1) and Administration of Evaluation in the MYP.

Item Constructor & Review Advisor · Universidad de Chile (DEMRE)

2024

Psychometrics (IRT) for national university-admission exams.

  • Designed and reviewed high-stakes items, ensuring psychometric validity and curricular alignment for the national testing instrument.

Professor · DUOC UC

2022 – 2024

Algebra, applied mathematics, and statistics for technical higher education.

  • Developed course content including mathematical modeling to strengthen students’ problem-solving.

Innovation Manager & Pedagogical Data Analyst · Preuniversitario Cpech

2016 – 2020

National-scale assessment data and a self-learning platform.

  • Managed national assessment results and surveys for 52 campuses, automating data management to optimize pedagogical operations.
  • Led development of a self-learning platform and information systems improving educational access.

Earlier Teaching & Academic Roles

2013 – 2021

Teaching Assistant at Pontificia Universidad Católica and math-teacher roles.

Selected Projects & Publications

Alpha HS Math Hub — research platform lead

Alpha School · internal

19 math investigations graded by ESSA evidence tiers (I–IV), each with a scrollytelling brief and a decision log.

SAT Prep (Desmos) — builder

Alpha School · internal

Production app with a bank of 700+ verified items, generated via an AI pipeline and gated by automated quality checks.

AI-Enhanced Cryptography Curriculum — designer

ISTELive 2025

An AI-supported unit selected for ISTELive 2025, resulting in a meeting with the ISTE CEO.

Product Book & Portfolio — author

ssarmiento.com/product-book

A curated, abstracted portfolio of products and research efforts, with the decision logic behind each build.

Research & Education

  • M.A. candidate, Educational Research — Universidad de Chile
  • Psychometrics · IRT · Bayesian Knowledge Tracing · educational data mining
  • AI-supported cryptography curriculum — selected for ISTELive 25

Languages & Interests

Languages
English (C1) · Spanish (native)
Interests
Bass & drums — I keep time for a living and for fun.