We are looking for an experienced Senior ETL Developer to join a large-scale data migration project in the telecommunications industry. This role focuses on analyzing existing Legacy ETL systems, reverse-engineering business logic, designing modern migration solutions, and guiding the development team in executing project deliverables.

Responsibilities
- Analyze source code, graphs, and code flows of existing Legacy ETL systems to understand and accurately restore business logic.
- Perform data profiling and data mapping from legacy source systems to new target systems
- Design data migration solution architectures and establish effective conversion patterns for high-volume ETL pipelines.
- Prepare technical documentation, including High-Level Design (HLD), Low-Level Design (LLD), and cutover/migration strategies.
- Provide technical direction, mentoring, and guidance to the development team throughout the ETL conversion and development process.
- Conduct regular code reviews and deliverable evaluations to ensure code quality, performance optimization,



and adherence to data architecture standards.
- Collaborate closely with Data Architects, Business Analysts, and Telco Domain Experts to ensure business logic validity and maintain data integrity during migration.
- Troubleshoot complex technical issues during the extraction, transformation, and loading (ETL) phases.

Requirements
- Minimum 3-5+ years of hands-on experience in ETL Development & Data Migration projects.
- Bachelor’s degree or higher in Computer Science, Information Technology, Software Engineering, or a related field.
- Proven experience in Legacy ETL projects (graph/code flow/source code analysis & logic restoration).
- Strong capability in migration solution design and conversion patterns.
- Ability to guide the development team and perform technical code/deliverable reviews.
- Preferred: Experience in solution design for large-scale ETL migration projects (Telco background is a plus).

Let's Build

📌 ETL Developer (Asia)
🏢 Merkleinnovation
📍 Asia