0797 469 136
Nairobi, Kenya
Dennis Guchu medium.com/@gitauguchu
github.com/dnguchu
Data Engineer linkedin.com/in/dnguchu
SKILLS
Databases: PostgreSQL, MySQL, Azure SQL Database CI/CD: GitHub Actions, Docker
Querying Language: SQL (Advanced) Unit Testing: Unittest, Pytest
Programming Languages: Python, R BI Tools: Power BI, Excel
Cloud Technologies: Microsoft Azure, AWS, Azure Data Factory Operating Systems: Windows, Linux
Data Engineering Tools: Databricks, n8n Workflows Version Control: Git
Data Integration: ETL Pipelines, REST APIs Mathematics: Statistics, Algebra
EXPERIENCE
DATA ENGINEERING INTERN June 2025 — September 2025
Tangazoletu Limited Nairobi, Kenya
• Tangazoletu is a client-centric, Kenyan IT fintech firm that develops IT solutions automating business processes to promote
efficiency and innovation.
• Participated in the extraction, transformation, and loading (ETL) of financial and client data using Python and SQL, improving
data accuracy and accessibility across systems.
• Designed and maintained automated data pipelines using n8n workflows and Azure Data Factory, ensuring seamless data flow
across internal applications.
• Supported the development of a credit scoring pipeline incorporating Gradient Boosting and LLM-based models, improving loan
approval precision.
• Collaborated in digitizing contract documents and integrating them into cloud storage on Azure, enhancing revenue assurance
and document traceability.
• Conducted troubleshooting and performance optimization on existing data workflows, reducing downtime and improving data
refresh rates by 20%.
• Partnered with cross-functional teams to monitor data pipeline performance and cloud infrastructure uptime.
DATA ANALYST INTERN June 2024 — October 2024
Tiny Totos Kenya Nairobi, Kenya
• Tiny Totos is a fast-paced startup improving service delivery standards for private slum-based daycares in Nairobi.
• Extracted, cleaned, and standardized large datasets from multiple sources, ensuring reliability for analytics and pipeline
integration.
• Built and maintained Power BI dashboards and automated Excel-based reports, enabling real-time monitoring of key
performance indicators (KPIs).
• Supported the migration of on-premise data workflows to the cloud using Azure services, improving data accessibility for
distributed teams.
• Collaborated with operations teams to resolve data inconsistencies and troubleshoot data ingestion errors in daily reporting
pipelines.
• Created scripts in Python for data validation and automation, reducing manual reporting time by 30%.
• Documented data flows and transformations, enhancing collaboration between analytics and engineering teams.
EDUCATION
BSc. Data Science and Analytics September 2022 — July 2026
Jomo Kenyatta University of Agriculture and Technology Nairobi, Kenya
CERTIFICATIONS
AWS Certified Cloud Practitioner
Python for Data Science and Machine Learning
Microsoft Power BI Data Analyst
Nairobi, Kenya
Dennis Guchu medium.com/@gitauguchu
github.com/dnguchu
Data Engineer linkedin.com/in/dnguchu
SKILLS
Databases: PostgreSQL, MySQL, Azure SQL Database CI/CD: GitHub Actions, Docker
Querying Language: SQL (Advanced) Unit Testing: Unittest, Pytest
Programming Languages: Python, R BI Tools: Power BI, Excel
Cloud Technologies: Microsoft Azure, AWS, Azure Data Factory Operating Systems: Windows, Linux
Data Engineering Tools: Databricks, n8n Workflows Version Control: Git
Data Integration: ETL Pipelines, REST APIs Mathematics: Statistics, Algebra
EXPERIENCE
DATA ENGINEERING INTERN June 2025 — September 2025
Tangazoletu Limited Nairobi, Kenya
• Tangazoletu is a client-centric, Kenyan IT fintech firm that develops IT solutions automating business processes to promote
efficiency and innovation.
• Participated in the extraction, transformation, and loading (ETL) of financial and client data using Python and SQL, improving
data accuracy and accessibility across systems.
• Designed and maintained automated data pipelines using n8n workflows and Azure Data Factory, ensuring seamless data flow
across internal applications.
• Supported the development of a credit scoring pipeline incorporating Gradient Boosting and LLM-based models, improving loan
approval precision.
• Collaborated in digitizing contract documents and integrating them into cloud storage on Azure, enhancing revenue assurance
and document traceability.
• Conducted troubleshooting and performance optimization on existing data workflows, reducing downtime and improving data
refresh rates by 20%.
• Partnered with cross-functional teams to monitor data pipeline performance and cloud infrastructure uptime.
DATA ANALYST INTERN June 2024 — October 2024
Tiny Totos Kenya Nairobi, Kenya
• Tiny Totos is a fast-paced startup improving service delivery standards for private slum-based daycares in Nairobi.
• Extracted, cleaned, and standardized large datasets from multiple sources, ensuring reliability for analytics and pipeline
integration.
• Built and maintained Power BI dashboards and automated Excel-based reports, enabling real-time monitoring of key
performance indicators (KPIs).
• Supported the migration of on-premise data workflows to the cloud using Azure services, improving data accessibility for
distributed teams.
• Collaborated with operations teams to resolve data inconsistencies and troubleshoot data ingestion errors in daily reporting
pipelines.
• Created scripts in Python for data validation and automation, reducing manual reporting time by 30%.
• Documented data flows and transformations, enhancing collaboration between analytics and engineering teams.
EDUCATION
BSc. Data Science and Analytics September 2022 — July 2026
Jomo Kenyatta University of Agriculture and Technology Nairobi, Kenya
CERTIFICATIONS
AWS Certified Cloud Practitioner
Python for Data Science and Machine Learning
Microsoft Power BI Data Analyst
