App Support / DevOps Engineer – L3

App Support / DevOps Engineer – L3Client: United Airlines Location: Chicago, IL – Onsite Rate: $67/hr On C2C Visa: H1-B Experience: 10+ YearsRole: L3 Production Support Engineer responsible for supporting enterprise AWS data platforms, ETL pipelines, and Databricks workloads, troubleshooting critical production issues, and coordinating with onsite stakeholders and offshore engineering teams.Must-Have Skills:AWS: Glue, Redshift, S3, IAM, CloudWatchPySpark / Spark / Spark SQLDatabricks: Jobs, Workflows, Notebooks, ClustersAdvanced SQL: Joins, analytical functions, query optimization, performance tuningProduction/L3 support, incident management & RCAETL/ELT, Data Lakes, Data Warehousing & Data QualityStrong debugging of pipelines, applications, databases & cloud infrastructureGit, CI/CD & deployment processesPython/Shell scripting for automationMonitoring, logging, alerting & ticketing toolsKey Responsibilities:Own L3 production incidents from troubleshooting through RCA and permanent fix.Debug AWS Glue, Redshift, Databricks, PySpark and SQL issues.Handle pipeline failures, data mismatches, performance issues and access/configuration problems.Lead critical incident bridges and communicate with business/customer stakeholders.Coordinate onsite teams with offshore support/data engineering teams.Support releases, deployments and production validation.Create RCA, runbooks, troubleshooting guides and operational documentation.Automate repetitive support activities and improve monitoring.Mentor L1/L2 engineers.Soft Skills:Excellent customer-facing communicationStrong ownership and problem-solvingAbility to work under production pressureStrong stakeholder and offshore-team coordinationClear technical/business communicationPreferred: Airflow/MWAA, Step Functions, Lambda, ServiceNow/Jira, AWS/Databricks certification, enterprise/regulated environment experience.