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Manvir Singh
Senior Full-Stack & Mobile Software Engineer specializing in cloud-based applications
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About
Data/ML backend engineer with hands-on production experience spanning RAG services (LlamaIndex/OpenAI) and AWS data platforms. Has delivered Terraform-managed AWS architectures (Lambda + ECS Fargate) with secure secrets handling, built Glue-to-Redshift ETL with schema evolution controls, modernized SAS reporting into Python microservices, and achieved major Redshift query speedups (2+ hours to under 15 minutes).
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Key Strengths
- Built production RAG backend using FastAPI with Pydantic-based validation and bounded retries
- Delivered AWS serverless + container architecture (API Gateway/Lambda + ECS Fargate) with Terraform and CI/CD
- Secure secrets/config management via IAM-scoped access to SSM Parameter Store and Secrets Manager; mitigated throttling via in-memory caching
- Designed AWS Glue ETL from S3/RDS to Redshift with crawler-driven schema updates, schema versioning, partitioning, and data quality checks
- Modernized SAS reporting into Python microservice with PostgreSQL using parallel run validation and incremental migration with fallback
- Redshift performance tuning: reduced daily aggregation runtime from 2+ hours to <15 minutes using sort/dist keys and batched inserts
- Owned data pipeline incident response: detected via CloudWatch/SNS, triaged logs, mitigated impact, and added schema validation/pre-run alerts
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