Data Engineer

Comcast Advertising is building large-scale data products that power reliable analytics for many users. In this onsite Data Engineering role in Willow Grove, PA
, you will design and deliver high-performance data pipelines on AWS
, using modern big data tooling and open table formats. You’ll help enable self-service analytics by focusing on data architecture, quality, and operational excellence.

• Architect, design, and build scalable data pipelines for large-scale data processing needs.
• Develop complex Big Data ETL workflows using frameworks such as Databricks Delta Live Tables (DLT).
• Design and implement data lake architectures, including Delta Lake and Apache Iceberg open table formats.
• Define, promote, and enforce data engineering best practices to support data quality, integrity, reliability, and performance
  .
• Lead observability and monitoring across pipelines, including data cataloging, lineage, and metadata management
  .
• Support delivery through peer reviews, knowledge sharing, production support, incident resolution, and change management.
• Follow strong code management and version control practices across development workflows.
• Create high-quality documentation (data flows, lineage diagrams, and architecture details) aligned to engineering standards.
• Ensure comprehensive coverage by building unit and integration tests using TDD principles.
• Own critical components of large-scale batch ETL systems, articulating data models and design decisions to Product, Engineering, and Leadership stakeholders.
• Build advanced semantic layers and support customer-facing self-service analytics solutions.
• Use independent judgment and discretion on complex, high-impact technical decisions.
• Maintain regular, consistent attendance with flexibility to work nights, weekends, or variable schedules as required.
• Work with semantic layer technologies such as Looker, Tab, Snowflake, and Databricks
  .
• Perform additional duties and responsibilities as assigned.

• Minimum 2 years of Data Engineering experience.
• Proficiency in Python and Py Spark , with a good grasp of SQL
  .
• Hands-on experience with Databricks and/or Snowflake is preferred.
• Experience with Data Warehouse modeling paradigms.
• Understanding of cloud-based architectures (AWS).
• Strong problem-solving skills.
• Nice to have certifications
  :
  • AWS Certified Developer Associate
  • Databricks Certified Data Engineer Associate
  • Snow Pro Advanced:
    Data Engineer
• A Bachelor’s Degree
  .
• Relevant work experience typically falls within 2 to 5 years
  .

SQL, Python, PySpark, Apache Spark, AWS, Databricks Delta Live Tables (DLT), Databricks, Delta Lake, Apache Iceberg, Looker, Tab, Snowflake

Pay Range: USD 79,728
- 132,880 per year. Comcast intends to offer base pay within this range based on job-related, non-discriminatory factors such as experience.

Application window: 30 days from the date the job is posted, unless the number of applicants requires it to close sooner or later.