
Ricardo Buitrago Ruiz
Debating Club Co-founder and President

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About me
cartesia.ai | MSc in Machine Learning @ Carnegie Mellon | La Caixa Foundation Fellow | Mathematician and Physicist
Education

Aquinas-Roncalli Debating Society
2016 - 2019Debate and Public SpeakingAwards at national debate competitions: • Spanish National Champion (PreCmude UAM, July 2019) • Second best speaker at I Torneo de Debate Vila de Verín (April, 2019) • Top team in speaker points in I Torneo BP CEU (March, 2019) and I Torneo de Debate Vila de Verín (April, 2019)Participation in international debate competitions: • Speaker at the Spanish World University Debate Championahip in Chile (July, 2018) and Peru (July, 2019) • Speaker at The Oxford… Show more Awards at national debate competitions: • Spanish National Champion (PreCmude UAM, July 2019) • Second best speaker at I Torneo de Debate Vila de Verín (April, 2019) • Top team in speaker points in I Torneo BP CEU (March, 2019) and I Torneo de Debate Vila de Verín (April, 2019)Participation in international debate competitions: • Speaker at the Spanish World University Debate Championahip in Chile (July, 2018) and Peru (July, 2019) • Speaker at The Oxford InterVarsity (November, 2018) • Speaker at Paris Open (February, 2019) Show less

Universidad Complutense de Madrid
2016 - 2021Bachelor of Science - BS Applied Mathematics• Machine Learning thesis: "Solving non-linear Partial Differential Equations using Deep Learning" - Implemented a Machine Learning method to solve high-dimensional parabolic PDEs. - Reformulated PDEs using Backward Stochastic Differential Equations and approximated the unknown gradient with Deep Neural Networks. • Physics thesis: “Analysis of Astrophysical Data using Bayesian Statistics” - Designed a method to compute the posterior probability distribution of a variable for… Show more • Machine Learning thesis: "Solving non-linear Partial Differential Equations using Deep Learning" - Implemented a Machine Learning method to solve high-dimensional parabolic PDEs. - Reformulated PDEs using Backward Stochastic Differential Equations and approximated the unknown gradient with Deep Neural Networks. • Physics thesis: “Analysis of Astrophysical Data using Bayesian Statistics” - Designed a method to compute the posterior probability distribution of a variable for which only an upper bound can be observed. - Invented a new posterior probability distribution to analyze several features jointly, , producing posterior distributions that are less affected by outliers. - Found robust probability distributions for the masses of 25 black holes, for which previously only an upper bound was known, by combining knowledge in Bayesian Statistics, Physics and Markov Chain Monte Carlo.• Excellence Scholarship of Comunidad de Madrid (2016-2017, 2017-2018 and 2018-2019) Show less

Carnegie Mellon University
2023 - 2024Master of Science - MS Machine Learning- Courses: Advanced Introduction to Machine Learning, Intermediate Statistics, Deep Learning Systems Implementation

UCLA
2019 - 2020Bachelor of Science - BS Mathematics and Physics 4/4Fully funded exchange program• Physics courses in General Relativity and Gravitation, Particle Physics, Quantum Mechanics and Nuclear Physics• Mathematics courses in Algorithms, Numerical Analysis, Optimization and Galois Theory• Graduate mathematics course in Differential Topology
Experience

Colegio Mayor Aquinas - Santo Tomás de Aquino
Sept 2016 - Apr 2019Debating Club Co-founder and President• Raised money for funds by negotiating with the directors of the colleges • Managed the budget and decided which trainings to take and which tournaments to attend• Formed a team of over 20 participants of the activity• Trained the new members of the club.

Train&Talk
Sept 2018 - Jul 2019Communication Consultant• Designed and implemented a corporate communication course for the sales division of a mayor technology company. It was focused on improving communication skills to persuade clients to purchase Cloud and Artificial Intelligence services. • Selected content and created presentations (with PowerPoint) of university-level debate courses.

Universidad Complutense de Madrid
Sept 2020 - Jun 2021Research AssistantResearch project: Machine Learning to prevent the next Market Meltdown• Implemented an innovative Machine Learning method to solve nonlinear PDE’s in Python (using Tensorflow). Created a custom Neural Network by defining layers and an architecture to join them together. • Enhanced the Machine Learning model by using several methods such as continuous visualization of weights at each epoch, fine tuning of optimizer’s parameters, custom weight initialization and design of accuracy metrics.• Applied the method to the Black-Scholes equation, which is a PDE widely used in Financial Mathematics.• Modelled the default risk (risk of someone not paying their debt) with a non-linear term in the PDE and solved it.• Found differences in prices of up to 10% compared to the risk-blind traditional solution. Show less

Santander Corporate & Investment Banking
Sept 2021 - Jul 2023Quantitative Analyst• Developed stochastic models in Python and C++ to price exotic interest rate financial products• Products: capfloors, swaptions, bermudan swaptions, Constant Maturity Swaps (CMS), CMS Spread options, Callable Deposits, Balance Guaranteed Swaps.• Collaborated with 50+ people to enhance the software library. Substituted a sequential search with a hash-based search to reduce process computation time from 30 minutes to 2 minutes. Leveraged C++ templates to price different financial products with the same Monte Carlo algorithm.• Developed the library in an agile manner to adapt to markets’ changes, while maintaining the mathematical rigor, scalability, and efficiency of the code. Exploited Python inheritance to integrate a new data format from a data provider, rapidly adapting yet making minimal changes in the library.• Built a loan database of 200GB by setting up a server to host the data, establishing a SFTP connection to download it, and developing a Python API (executable through Excel) to read it. Analyzed over 1bn loans to extract prepayment information depending on country, loan type and vintage. Show less

Cartesia
May 2024 - nowMachine Learning Intern
Licenses & Certifications

AWS fundamentals: Going Cloud-Native
CourseraMar 2020
Machine Learning by Andrew Ng
CourseraAug 2020
Carnet de conducir B2
Dirección General de TráficoAug 2017
English C2 (IELTS: 8.5/9)
IELTS OfficialNov 2019- View certificate

Natural Language Processing with Classification and Vector Spaces
DeepLearning.AIMar 2021 - View certificate

”la Caixa” Foundation Fellows
Fundación ”la Caixa”Jan 2022 - View certificate

MSc in Machine Learning
Carnegie Mellon UniversityDec 2024 
Nova Talent member
Nova TalentMar 2020
Languages
- enEnglish
- spSpanish
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