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Jorge Mendoza
Senior Full-Stack Developer specializing in Python, AWS serverless, and data workflows
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About
Backend/data engineer from ALDI Tech Hub who modernized legacy analytics (Excel/SAS) into production-grade Python services on AWS serverless (FastAPI on Lambda behind API Gateway with Step Functions). Strong in reliability and operations (Cognito auth, retries/timeouts, structured logging, CloudWatch alarms) and data pipelines (Glue ETL with schema evolution); delivered measurable SQL tuning gains (30s to 2s, 70% CPU reduction).
Experience
Education
Key Strengths
- Built production Python APIs on AWS serverless (FastAPI + Lambda + API Gateway + Step Functions)
- Reliability engineering: global exception middleware, timeouts, retries (tenacity), structured logging with correlation IDs
- ETL expertise with AWS Glue (crawlers, Data Catalog) handling schema evolution and data quality validation
- Incident ownership for data pipelines: detected schema drift, triaged via CloudWatch/Glue logs, added validation and alerts, restored within hours
- Modernized legacy SAS pricing/statistical model into modular Python services with parity validation against historical runs
- SQL performance optimization: eliminated full table scans via CTE rewrites + targeted indexes; reduced query time 30s→2s and CPU load by 70%
- End-to-end delivery with IaC and CI/CD (Terraform, CodePipeline/CodeBuild) plus secrets/config via Parameter Store and IAM
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