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Nicolas (Valderrama) Valderrama Barrera

Data Analyst & Digital Transformation Consultant

Nicolas Valderrama Barrera
Hildesheim, Germany

Experience

Oct 2024 - Apr 2025
7 months

Data Analyst & Digital Transformation Consultant

Management Solutions

  • Built a Looker-based analytics application with Python preprocessing and AppScript write-back to support client outreach for 50 bankers (scaling to 200).
  • Cut manual call-logging time from ~5 minutes to ~1 minute, improving operational efficiency and ensuring audit traceability.
  • Delivered dashboards used daily by bankers and weekly by managers to prioritise clients, analyse rejection drivers, and evaluate performance.
  • Worked in Agile cycles with stakeholders to iterate data requirements and prepare the platform for rollout to 200+ users.
Feb 2024 - Jul 2024
6 months
Colombia

Data Transformation Intern

Central Bank of Colombia

  • Digitised manual tracking in a banknote production plant using PowerApps and PowerAutomate with SQL and Python preprocessing.
  • Reduced registration time by ~30% and enabled real-time operational dashboards in Power BI across multiple sub-process lines.
  • Supported staged rollout with both paper and digital traceability to preserve compliance during adoption.
  • Collaborated in Agile reviews to refine user workflows and extend the solution to additional production sub-processes.

Summary

Data Analyst with experience in consulting and financial environments, designing data solutions used in production by business stakeholders.

I work with Python, SQL, Power BI, and AWS to build ELT processes and deliver analytics that support decision-making at scale.

Previously contributed to digital transformation projects in the Central Bank and a consulting firm.

Seeking roles where I can create value through data-driven execution and scalable analytics.

Skills

  • Programming & Querying — Python, Sql, R
  • Analytics & Bi — Power Bi, Tableau, Looker Studio, Data Visualization
  • Data Engineering Foundations — Elt Pipelines, Data Cleaning, Data Governance
  • Aws & Cloud — S3, Glue, Athena, Lambda, Kinesis, Ec2, Redshift, Iam
  • Automation & Tools — Git, Docker, Powerapps, Powerautomate, Devops (Scrum)
  • Machine Learning — Scikit-learn, Tensorflow, Pytorch

Languages

Spanish
Native
English
Intermediate

Education

Apr 2025 - Present

University of Hildesheim

M.Sc. in Data Analytics · Data Analytics · Germany

Jun 2018 - Jun 2024

Universidad Militar Nueva Granada

B.Sc. in Mechatronics Engineering · Mechatronics Engineering · Colombia · Final GPA: 4.02/5.00

Certifications & licenses

AWS Cloud Solutions Architect Professional

AWS

AWS Fundamentals Specialization

AWS

Building Deep Learning Models With TensorFlow

IBM

Deep Learning & Neural Networks With Keras

IBM

Deep Neural Networks With PyTorch

IBM

Google Data Analytics Professional Certificate

Google

Introduction To DevOps

IBM

Machine Learning With Python

IBM

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