Summary
Overview
Work History
Education
Skills
Timeline
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Tonny Mutumba

Denver,CO

Summary

Result-oriented person with experience in data manipulation, analysis, visualization and reporting, actively seeking to transition into a software engineering role by leveraging my technical skills in programming languages like Python and SQL to build robust data-driven applications.

Overview

8
8
years of professional experience

Work History

Data Engineer Apprentice

Data Engineering Academy
04.2025 - 09.2025
  • Designed and optimized ETL pipelines using SQL and Python to extract, transform, and load large datasets.
  • Built data models and integrated data into warehouses (Snowflake, Redshift, BigQuery) to support analytics.
  • Worked with Kafka to develop real-time streaming pipelines for ingestion and processing.
  • Gained hands-on experience with AWS services(S3, RDS, EC2) for storage, compute, and data integration.
  • Applied SQL tuning (indexing, partitioning, query optimization) to improve performance on high-volume data.
  • Delivered capstone projects simulating enterprise data engineering workflows from ingestion to reporting.

Data & Analytics Engineer

WESTERN UNION (HQ)
01.2021 - 04.2025
  • Supported multiple large scale cloud data migration projects from on-prem snowflake, integrating data from Oracle and legacy system using Python and Spark.
  • Partnered with cross-functional teams to develop, design and implement data-driven solutions to business challenges leveraging GitLab for version control and collaboration.
  • Deployed complex ELT pipelines using snowflake features such as Snowpipe, Streams, and Tasks to automate data ingestion and transformation for auditing and compliance.
  • Coordinated with Auditors and provided in-depth information about different data sets.
  • Utilized AWS to generate and manage reports supporting fieldwork activities, ensuring efficient data accessibility and accuracy during audit processes.
  • Applied advanced SQL techniques, including CTEs, window functions, and stored procedures for large-scale financial data analysis.

Database administrator (PostgreSQL)

COGNIXIA INC
01.2020 - 01.2021
  • Optimized database performance through identifying and resolving query bottlenecks, maintained security policies to protect sensitive data.
  • Created Complex Query selections and filtered data by using advanced SQL operations like JOINS, Subqueries, window functions, and stored procedures.
  • Daily log analysis through pgbadger tool and query tuning.
  • Monitored the DB growth for every month in DWH databases, implemented some table partitioning.
  • Performed minor level upgrades by installing new packages.

Computer Lab Technician

METROPOLITAN STATE UNIVERSITY OF DENVER
01.2018 - 01.2020
  • Performed troubleshooting, data entry and recovery, tracking issues, and documentation.
  • Identified, measured, and recommended improvement strategies to improve IT services.

Education

Bachelor of Computer Science -

Metropolitan State University of Denver
01.2020

Skills

  • Programming Languages (Python, SQL)
  • Data Analysis Tools (Pandas, NumPy, Matplotlib, Power BI)
  • Data Warehousing (snowflake, redshift)
  • Cloud Computing (AWS)
  • Version Control (Git)
  • SDLC (Agile Methodologies)
  • Data pipeline design
  • Data modeling
  • Data warehousing
  • ETL development

Timeline

Data Engineer Apprentice

Data Engineering Academy
04.2025 - 09.2025

Data & Analytics Engineer

WESTERN UNION (HQ)
01.2021 - 04.2025

Database administrator (PostgreSQL)

COGNIXIA INC
01.2020 - 01.2021

Computer Lab Technician

METROPOLITAN STATE UNIVERSITY OF DENVER
01.2018 - 01.2020

Bachelor of Computer Science -

Metropolitan State University of Denver

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Tonny Mutumba