Daniel Alejandro Castillo Martín
Data Scientist
Guadalajara, Jalisco,JAL
Summary
Experienced Data Scientist and BI Developer with a strong foundation in finance and fintech, including specialized expertise in crypto and blockchain. Experienced in both startup and corporate environments, with a solid grasp of project management methodologies. Driven to leverage data-driven insights to solve complex challenges and enable strategic decision-making within fast-paced, high-performance teams.
Committed to continuous learning and professional growth, I excel in collaborative, innovative environments—delivering impactful solutions that align with organizational goals and create lasting value. Ready to apply my technical expertise and leadership skills to projects that drive meaningful change.
Overview
5
5
years of professional experience
2
2
Languages
Work History
Data Scientist
Grupo Toka
10.2023 - Current
- Developed and deployed an end-to-end ML pipeline that forecasts critical financial flows with a MAPE under 15%, significantly improving operational planning accuracy.
- Developed automated fraud detection alerts that identify suspicious user transactions and trigger real-time email notifications to the risk team, effectively reducing fraud exposure.
- Led and developed the full project lifecycle for income analytics in a Fintech subsidiary, delivering insights that empowered strategic decision-making.
- Designed multiple ETL processes for operational and financial teams, enhancing efficiency and delivering relevant KPIs for better performance tracking.
- Automated and optimized compliance-sensitive processes reduce processing times, human error, boost productivity, and lower regulatory risk.
- Built an automated SQL and Python data matching system to reconcile internal and stakeholder data, directly contributing to the recovery of a high-value, delinquent portfolio through active negotiation participation.
- Mentored and managed a team of analysts, improving workflow efficiency, reporting quality, and operational procedures, aligned with company objectives.
Associate Program Manager
Sanmina Corporation
02.2023 - 10.2023
- Ensure that committed demand gets delivered on time, and work with cross-functional teams to manage a medical project.
- Monitor and provide solutions, and creative initiatives, to optimize the rework processes for a telecommunications project.
- Lead teams from different areas to achieve common organizational goals.
- Providing results, analyzing data, and providing reports to the stakeholders to track progress.
- Successfully recovered a significant number of delinquent accounts for rework services.
Customer Success Manager
Smartrader Inc.
03.2022 - 01.2023
- Boosted user acquisition through content and experience management: Developed impactful educational content and monitored customer experience with tools like Microsoft Office, Intercom, and Notion, supporting user growth and satisfaction.
- Strengthened Social Media Community: Enhanced community engagement through targeted content creation and analytics, increasing our online reach, and fostering stronger user connections.
- Product Evangelism and Community Engagement: Presented our product as a speaker at a key industry event, led online user forums, and actively promoted our startup through strategic networking.
- Author of Weekly News & Analysis Blog: Wrote and curated a weekly blog featuring industry news, analysis, and insights, providing valuable content to our community, and keeping users engaged with the latest trends and developments.
Data Science Intern
Smartrader Inc.
08.2021 - 02.2022
- Contributed to algorithmic trading models and strategy optimization: Assisted the lead data scientist and development team in executing and testing various algorithmic trading models to track performance. Conducted research and implemented innovative ideas to help the team develop more efficient strategies.
Customer Service Representative
Beliveo México
01.2017 - 08.2017
- Developed key customer service skills: gained valuable experience as a customer service agent, building essential skills such as situation management, problem-solving, emotional intelligence, and database exploration.
Education
BBA - Administración Financiera Y Sistemas
Universidad De Guadalajara
Guadalajara, Jalisco, Mexico 05.2017 - 01.2022
No Degree - Data Science And Analytics
CoderHouse
Buenos Aires, Argentina (Remote) 05.2001 - 06.2023
Skills
Python (data analysis, machine learning libraries)
SQL (database management, ETL development, advanced query writing)
Data Science & Analytics (data preprocessing, modeling, evaluation)
Business Intelligence (Power BI, data visualization)
Machine Learning (supervised and unsupervised techniques)
Computing & Cloud Fundamentals (GitHub, basic Java, AWS)
Critical Thinking & Problem Solving
Logical Thinking
Decision Making
Team Leadership & Collaboration
Project Management (Agile methodologies, Jira)
Personal Information
- Date of Birth: 01/01/99
- Nationality: Mexican
Timeline
Data Scientist
Grupo Toka
10.2023 - Current
Associate Program Manager
Sanmina Corporation
02.2023 - 10.2023
Customer Success Manager
Smartrader Inc.
03.2022 - 01.2023
Data Science Intern
Smartrader Inc.
08.2021 - 02.2022
BBA - Administración Financiera Y Sistemas
Universidad De Guadalajara
05.2017 - 01.2022
Customer Service Representative
Beliveo México
01.2017 - 08.2017
No Degree - Data Science And Analytics
CoderHouse
05.2001 - 06.2023