Nicolas (Valderrama) Valderrama Barrera-Data Analyst & Digital Transformation Consultant
Check rate
Experience
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.
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.
Industry experience
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Experienced in Banking and Finance and Government and Administration.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Business Intelligence, Information Technology, Operations, and Production.
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
Education
University of Hildesheim
M.Sc. in Data Analytics · Data Analytics · Germany
Universidad Militar Nueva Granada
B.Sc. in Mechatronics Engineering · Mechatronics Engineering · Colombia · Final GPA: 4.02/5.00
Certifications & licenses
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
Introduction To DevOps
IBM
Machine Learning With Python
IBM
Statistics
Experience
Global experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Nicolas is based in Hildesheim, Germany.
Nicolas speaks the following languages: Spanish (Native), English (Intermediate).
Nicolas has at least 1 year of experience. During this time, Nicolas has worked in at least 2 different roles and for 2 different companies. The average length of individual experience is 1 year and 6 months. Note that Nicolas may not have shared all experience and actually has more experience.
Based on recent experience, Nicolas would be well-suited for roles such as: Data Analyst & Digital Transformation Consultant, Data Transformation Intern.
Nicolas's most recent position is Data Analyst & Digital Transformation Consultant at Management Solutions.
In recent years, Nicolas has worked for Management Solutions and Central Bank of Colombia.
Nicolas is most experienced in industries like Banking and Finance and Government and Administration.
Nicolas is most experienced in business areas like Business Intelligence, Information Technology, and Operations. Nicolas also has some experience in Production.
Nicolas holds a Master in Data Analytics from University of Hildesheim and a Bachelor in Mechatronics Engineering from Universidad Militar Nueva Granada.
Nicolas has 8 certificates. Among them, these include: AWS Cloud Solutions Architect Professional, AWS Fundamentals Specialization, and Building Deep Learning Models With TensorFlow.
The availability of Nicolas needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
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The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 26 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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