Cristian David Sainea Cespedes
Bogotá
Summary
Data analysis professional prepared to deliver impactful insights and drive business decisions. Adept in data visualization, statistical analysis, and database management, with strong focus on teamwork and adaptability. Known for reliability, analytical thinking, and results-driven approach. Skilled in Python, SQL, Power BI, and Excel, ensuring robust data solutions and strategic recommendations.
Overview
5
5
years of professional experience
Work History
Data Analysis Instructor - Python
Bogota Institute of Technology (BIT)
03.2025 - Current
- Deliver engaging and informative classes on data analysis using Python, focusing on libraries such as Pandas, Seaborn, Matplotlib, and NumPy.
- Teach students essential skills in data cleaning, analysis, and visualization, preparing them for real-world applications.
- Introduce foundational concepts of Machine Learning (ML) models to provide students with a comprehensive understanding of data science workflows.
- Conduct remote lessons, ensuring effective communication and support for students in a virtual learning environment.
Functional Analyst
Banco AV Villas
02.2024 - Current
- Streamlined business processes by conducting detailed requirements analysis and providing actionable recommendations for improvement.
- Participated in the migration of confidential data to a cloud-based data lake (AWS), reducing operational costs and enhancing computing efficiency.
- Designed and implemented internal process improvements to automate repetitive tasks, significantly reducing data delivery times.
- Improved the quality of requirements by performing in-depth analysis and creating clear, comprehensive documentation.
- Resolved ambiguities in requirements documentation, ensuring clarity for technical teams and minimizing rework efforts.
Data Analyst
LogicSource
12.2022 - 02.2024
- Manage end-to-end "Ingest to Publish" processes, including data extraction, transformation, and quality assurance for diverse datasets from retail industries.
- Ensure data accuracy and reliability by implementing robust quality control measures and validation processes.
- Collaborate with cross-functional teams to support data-driven decision-making and achieve organizational goals.
- Participated in an R&D fair, presenting an innovative project focused on standardizing supplier names using Unsupervised Machine Learning and Natural Language Processing (NLP) techniques.
Professor Data Analysis Bootcamp
Bogota Institute of Technology (BIT)
05.2023 - 06.2023
- Delivered comprehensive instruction to a class of 30 students, covering foundational Excel skills, dynamic tables and graphs creation, Power BI reports development and optimization, and KPI design and analysis.
- Designed and implemented assessment methods, including tests, quizzes, and hands-on projects, to evaluate student performance and progress.
- Utilized real-world datasets from diverse industries, such as education, app usage analytics, and human resources, to provide practical, industry-relevant learning experiences.
- Fostered a collaborative learning environment, equipping students with the technical and analytical skills necessary for data-driven decision-making.
Data Analyst and Project Management Support
Teleperformance
06.2021 - 12.2022
- Responsible for data normalization, cleaning, and analysis using T-SQL and Python, ensuring data quality and accuracy for decision-making.
- Created stored procedures, automated ETL processes, and scheduled server jobs to handle large datasets efficiently.
- Worked with different teams to build data pipelines, reducing processing times and improving workflow efficiency.
- Designed user-friendly Power BI dashboards and visualizations, making it easier for stakeholders to analyze and filter data.
- Communicated effectively with project managers and team leaders to address needs and resolve issues in cross-departmental projects.
- Supported internal departments by providing data solutions that aligned with company goals and improved operational processes.
Workforce Real Time Analyst
Teleperformance
04.2020 - 06.2021
- Monitored real-time operations to ensure smooth workflow and minimize disruptions caused by absenteeism or system issues.
- Made quick, data-driven decisions to maintain service levels and avoid operational setbacks.
- Generated detailed reports using SQL, PowerBI and Excel to provide insights into key performance indicators (KPIs) and support decision-making.
- Ensured compliance with security policies by deprovisioning tools and access for employees as needed.
- Developed and maintained real-time data streaming pipelines to capture and process data with minimal delay, enabling near real-time analysis.
Education
Bachelor of Science - Computer And Systems Engineering
Universidad Nacional De Colombia
Bogotá, Colombia12-2022
Master of Science - Computer And Systems Engineering
Universidad Jorge Tadeo Lozano
Bogotá, Colombia08-2025
Skills
- Data analysis
- Python programming
- Data visualization
- SQL querying
- Power BI development
- ETL processes
- SQL Server databases
- Data storytelling
- Oracle SQL developer
- Power Query
Timeline
Data Analysis Instructor - Python
Bogota Institute of Technology (BIT)
03.2025 - Current
Functional Analyst
Banco AV Villas
02.2024 - Current
Professor Data Analysis Bootcamp
Bogota Institute of Technology (BIT)
05.2023 - 06.2023
Data Analyst
LogicSource
12.2022 - 02.2024
Data Analyst and Project Management Support
Teleperformance
06.2021 - 12.2022
Workforce Real Time Analyst
Teleperformance
04.2020 - 06.2021
Bachelor of Science - Computer And Systems Engineering
Universidad Nacional De Colombia
Master of Science - Computer And Systems Engineering
Universidad Jorge Tadeo Lozano
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