ETL Developer

Position: ETL Developer

Contract: W2 Only

Responsibilities:

• Design, develop, and maintain scalable ETL pipelines to support data integration and backend services for mobile and enterprise applications.
• Collaborate with Android/mobile development teams to understand data needs for performance monitoring, analytics, and reporting.
• Build and maintain data workflows that connect to APIs, GraphQL, and RESTful services to extract, transform, and load data from diverse sources.
• Develop efficient ETL solutions using tools such as Apache NiFi, Apache Airflow, Talend, or custom Python/Scala-based pipelines.
• Ensure data quality, validation, and integrity across internal and external data sources.
• Optimize ETL jobs for performance, scalability, and minimal latency especially for real-time data analytics use cases in mobile environments.
• Create and maintain documentation on ETL processes, data models, and transformation logic.
• Work with version control systems like Git and participate in code reviews and source control branching strategies.
• Collaborate closely with backend engineers, mobile developers, project managers, and data analysts in a fast-paced agile environment.
• Provide accurate development time estimates and deliver within tight deadlines.

Required Qualifications:

• 7 10+ years of experience in ETL development, data engineering, or a similar backend role.
• Strong experience in developing ETL workflows and data pipelines using tools such as Talend, Informatica, Apache Spark, or custom scripts (e.g., Python, SQL).
• Solid understanding of API-based data extraction, including REST and GraphQL (Apollo client experience is a plus).
• Proven ability to build and optimize data pipelines for performance and reliability.
• Experience with cloud platforms like AWS, Google Cloud Platform, or Azure and services such as S3, Redshift, BigQuery, or Dataflow.
• Strong SQL and data modeling skills.
• Familiarity with Git for version control and tools like Jira or Azure DevOps for issue tracking.
• Excellent communication and cross-functional collaboration skills.

Nice to Have:

• Experience supporting mobile development teams with backend or analytics-focused data.
• Familiarity with app telemetry tools (Firebase, Mixpanel, etc.) and mobile performance data pipelines.
• Exposure to Kotlin or Android data layer architectures (helpful but not required).
• Experience with performance and accessibility data aggregation for mobile applications.