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Kevin Lee
Senior Backend Engineer specializing in Python and AWS serverless/data pipelines
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Serverless-focused backend/data engineer who has delivered production Python services on AWS (FastAPI on Lambda/API Gateway) plus Glue-based ETL pipelines from S3 to relational databases. Strong in operational reliability (timeouts, retries, monitoring/alerts) and modernization work, including parallel-run parity validation for migrating legacy batch logic to Python services. Demonstrated measurable SQL tuning impact (15 min to under 3 min).
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Key Strengths
- Built and operated production serverless Python APIs on AWS (FastAPI on Lambda behind API Gateway)
- Reliability-focused design: explicit timeouts, small functions, Step Functions for long workflows, layered retries
- Delivered IaC + CI/CD deployments using CloudFormation with automated testing/deployments
- Implemented IAM-based authentication/authorization at API Gateway with defensive permission checks in services
- Built AWS Glue ETL from S3 to relational databases with data quality checks and schema evolution handling
- Incident ownership for failed batch/ETL runs using CloudWatch alerts and Glue logs; restored pipelines and added schema validation to prevent recurrence
- SQL performance optimization: reduced aggregation query runtime from ~15 minutes to <3 minutes via indexing and batching
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