ETL Developer (SQL & GCP)

5-10 Years

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Job Description

Key Responsibilities:

1. ETL Pipeline Development:

Design, develop, and maintain scalable ETL processes to extract, transform, and load data from various structured and unstructured sources into GCP-based data warehouses (BigQuery, Cloud SQL, Cloud Storage, etc.).
Develop efficient SQL queries and scripts to support data transformation, aggregation, and validation.
Optimize ETL workflows to ensure low-latency data processing and high performance.

2. Google Cloud Dataform & Data Transformation:

Utilize Google Cloud Dataform to implement SQL-based data transformations in BigQuery following best practices in data modeling, version control, and dependency management.
Develop modular SQL workflows using Dataform to simplify transformation logic and enhance reusability.
Integrate Dataform into existing ETL/ELT pipelines to streamline data engineering and analytics workflows.
Leverage Dataform's automated testing, scheduling, and Git-based version control for collaborative development and data quality assurance.

3. Data Integration & Management:

Work with diverse data sources (databases, APIs, streaming data, and cloud storage) to integrate data into centralized repositories.
Ensure data consistency, integrity, and accuracy through rigorous testing and validation.
Implement incremental data loads, change data capture (CDC), and batch/real-time ETL strategies.
Leverage GCP services like Dataflow, Dataproc, Cloud Functions, and Pub/Sub to handle data ingestion and transformation.

4. Database & SQL Development:

Write complex SQL queries, stored procedures, and functions to support analytical and operational data needs.
Optimize SQL queries for performance tuning and cost efficiency in BigQuery, Cloud SQL, and other relational databases.
Ensure proper indexing, partitioning, and clustering strategies for optimal query performance.

5. Cloud & DevOps Integration:

Deploy and monitor ETL workflows using GCP-native tools (Cloud Composer/Airflow, Dataform, Dataflow, Dataprep, etc.).
Implement CI/CD pipelines for ETL jobs using Terraform, Cloud Build, GitHub Actions, or Jenkins.
Work with Infrastructure and DevOps teams to ensure secure and reliable deployment of ETL solutions in a cloud environment.

6. Data Quality & Governance:

Implement data validation, data cleansing, and error-handling mechanisms in ETL pipelines.
Monitor data pipeline performance and ensure timely resolution of issues and failures.
Work with stakeholders to define data governance policies, metadata management, and access controls.

7. Documentation & Collaboration:

Maintain comprehensive documentation for ETL workflows, data transformations, and technical design.
Collaborate with data engineers, data analysts, and business teams to understand data needs and optimize data processing workflows.
Conduct code reviews and provide mentorship to junior developers when necessary.

Required Skills & Qualifications:

1. Technical Skills:

ETL Development:

Hands-on experience in designing and implementing ETL pipelines.
Proficiency in ETL tools such as Apache Airflow (Cloud Composer), Dataflow, or Informatica.

SQL & Database Management:

Strong expertise in SQL (DDL, DML, performance tuning, indexing, partitioning, stored procedures, etc.).
Experience working with relational (Cloud SQL, PostgreSQL, MySQL) and NoSQL databases (Bigtable, Firestore, MongoDB, etc.).

Cloud (GCP) Expertise: