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David Sierra

David Sierra


Data Manager



My Portfolio Highlights

My New Certification

Data Analyst Associate

My New Certification

Data Scientist Associate

My New Course

Introduction to Python

Data guardian, protecting the integrity and privacy of valuable information.

My Work

Take a look at my latest work.


Introduction to Statistics in R


Joining Data with dplyr


gapminder, ggplot

My Certifications

These are the industry credentials that I’ve earned.

Data Analyst


Data Scientist


DataCamp Course Completion

Take a look at all the courses I’ve completed on DataCamp.

My Work Experience

Where I've interned and worked during my career.

RBCI | Jul 2023 - Present

Senior Data Management Specialist


AlphaSights | Jul 2021 - Aug 2021

Strategic Advisor

Conducted strategic analysis throughout the customer's new education and innovation technology suite implementation.
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GLG | Jun 2021 - Present

Council Member

Performance management and technology consultant and facilitator. Expertise in implementation and qualitative research. Primarily provides corporate strategy, healthcare, and project management consulting services. I blend first-hand knowledge and skills to handle complex customer issues and confidentially deliver optimal results.

United States Air Force | Feb 2016 - Oct 2020

Contract Manager

As a Sergeant, I operated as a Contracting Officer's Representative at David Grant Medical Center. I directed the acquisition of the laboratory's supplies, services, and maintenance while managing a zero-based budget for support staff.

Booz Allen Hamilton | Mar 2018 - Aug 2020

Error Prevention Instructor

I coached staff on how to create and sustain a High-Reliability Organization. I co-sponsored a joint DoD/VA risk mitigation policy that increased access and clinical currency in collaboration with the CMO. Reducing the medical group's safety events by 86% was recognized by my being honored with the Air Force Commendation Medal.

United States Air Force | Oct 2014 - Feb 2016

Medical Logistician

I instructed on principal training and development for apprentice technicians. Additionally, I authored a new Cold Chain protocol for live-tissue implants. The 59th Medical Wing recognized my impact with the Air Force Achievement Medal.

My Education

Take a look at my formal education

Master of Science in Business AnalyticsGolden Gate University | 2023
Bachelor of Arts in ManagementGolden Gate University | 2022
Associate of Arts and Sciences in Logistics, Materials, and Supply Chain ManagementCollege of the Air Force | 2019

About Me

David Sierra

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