Shannen Hemrom
Cardiff
Summary
Data Engineer with experience designing and developing scalable data solutions to support business-critical systems and decision-making. Passionate about building reliable ETL pipelines, improving data quality, and transforming complex datasets into valuable insights. A collaborative team player with strong analytical and problem-solving skills, committed to delivering efficient and maintainable data solutions. Adaptable and eager to learn, with a keen interest in modern data engineering technologies, cloud platforms, and best practices.
Overview
4
4
years of professional experience
1
1
Certification
Work history
Junior data engineer
LDMS
Cardiff
06.2024 - Current
Data Engineer – Loan Migration Projects
- Developed and maintained ETL pipelines in Python to migrate loan agreement data into a debt and loan management platform, using Pandas, SQLAlchemy, and Oracle Database.
- Designed and implemented data transformation workflows to load data into target schemas while ensuring data integrity and compliance with migration requirements.
- Built automated data validation, reconciliation, and quality assurance checks to verify consistency and accuracy between source and target systems.
- Optimized ETL performance through parallel processing techniques, reducing execution times for large-scale data migration workloads.
- Performed data analysis and root-cause investigations to identify data quality issues, support business requirements, and improve migration outcomes.
- Led engineering delivery for the Ireland and Wales loan migration projects, coordinating development, testing, and deployment activities.
- Contributed to the Norway migration project within a cross-functional team, supporting pipeline development, data validation, and migration testing.
- Collaborated with business analysts, QA engineers, and stakeholders to translate migration requirements into scalable data solutions.
Software Developer
EcoGif
Cardiff
05.2022 - 11.2022
- Collaborated with multidisciplinary teams to develop an eco-friendly educational website.
- Built interactive games, AI chatbot functionality, and additional website features using React, HTML, CSS, and JavaScript.
- Conducted research and communicated effectively with stakeholders to support project development.
- Utilised C++ and SQL knowledge to contribute to secure database design and management.
- Helped deliver a dynamic, secure, and environmentally focused web platform.
Education
Bachelor of Science - Computer Science
University of South Wales
Skills
Time management
Communication skills
Leadership
Team building
Problem-solving
Technial Skills
- Programming Languages: Python, SQL, JavaScript
- Data Engineering: ETL Development, Data Migration, Data Validation, Data Reconciliation, Data Quality, Data Analysis
- Python Libraries: Pandas, SQLAlchemy
- Databases: Oracle Database, MongoDB
- Performance & Processing: Parallel Processing
- Version Control: Git, Bitbucket
- Project Management & Collaboration: Jira
- Web Technologies: React, HTML, CSS, JavaScript
Certification
Data Camp Career Track- Data Engineer in Python
Data Camp Career Track- ETL and ELT in Python
Data Camp Career Track- Introduction to Apache Airflow
Data Camp Career Track- Software Engineering Principles in Python
Data Camp Career Track- Data Warehousing Concepts
FreeCodeCamp - JavaScript Algorithms and Data Structures
Timeline
Junior data engineer
LDMS
06.2024 - Current
Software Developer
EcoGif
05.2022 - 11.2022
Bachelor of Science - Computer Science
University of South Wales