Esref M.
Lead Data Engineer @Dot Collective
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WORK HISTORY
Lead Data Engineer @Dot Collective
London, GB
Led three teams in building and maintaining CRUK Supporter data pipelines, integrating with Semarchy MDM and synchronising data across Siebel and Salesforce CRM systems.• Designed and optimized ETL pipelines using AWS serverless infrastructure (DMS, S3, Lambda, Glue, Fargate), ensuring high performance and cost efficiency.• Implemented Airflow for orchestration, GitHub Actions for CI/CD, and developed scalable data processing workflows with PySpark.• Established a comprehensive testing framework for integration and end-to-end testing, improving system reliability and robustness.• Introduced the GitFlow branching strategy, streamlining release and environment management.• Proactively identified and resolved security, performance, and cost challenges, driving significant system improvements.• Provided technical leadership, mentoring team members, engaging with stakeholders, and delivering strategic solutions to complex business challenges.
EDUCATION
Karadeniz Technical University
Bachelor of Engineering (B.E.), Maritime Transportation and Management Engineering
Marmara University
Master's degree, Quantitative Methods
SKILLS
ABOUT ESREF M.
Reliable Senior Data Engineer keen to help companies identify areas to increase efficiency while decreasing the cost and time. My objective is to progress further in data field using the latest technologies which will challenge me and allow me to use my education, skills and experiences in a way that is mutually beneficial to both myself and my employer and allow for future growth and advancement.
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