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Peifeng Hu
Junior Software Development Engineer specializing in AWS distributed systems and data orchestration
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About
Backend/platform engineer with deep AWS experience who built a high-reliability ingestion platform (Lambda + Step Functions + DynamoDB) that became the single source of truth for training/qualification certification data across an AU region, handling high-volume async updates with strong consistency controls. Also led a major API migration from Lambda to ECS/Fargate to eliminate cold starts and increase throughput, and has hands-on EKS/Kubernetes operations plus Kafka partitioning/ordering expertise.
Experience
Education
Key Strengths
- Designed and implemented reliable AWS ingestion layer (Lambda + Step Functions) as single source of truth for training/qualification data
- Scaled DynamoDB ingestion to ~50k updates with partition-aware batching and conditional writes to avoid contention
- Strong data consistency approach for async upstream sources (version-controlled writes, schema normalization/validation, concurrency guards)
- Streaming systems expertise: corrected Kafka ordering issues via deterministic partitioning and sequence checks
- Executed production migration from Lambda to ECS/Fargate to remove cold starts and raise compute/concurrency ceilings
- Hands-on Kubernetes/EKS operations (manifests, resource tuning, HPA autoscaling, rolling updates)
- Practical GitOps implementation with infra/config in Git and automated deployments from main
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