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Puyu Yang
Senior Cloud Platform Engineer specializing in AI infrastructure and distributed systems
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About
Engineer with hands-on experience shipping production Python integrations and designing for reliability from day one, including idempotency, retries, dead-letter handling, contract checks, and full observability. Also brings web automation experience with Puppeteer and has implemented high-availability failover using load balancer liveness checks, backup environments, and cold standby architecture.
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Key Strengths
- Production-grade integration reliability engineering
- Strong observability mindset with logs, metrics, traces, and alerting
- Thoughtful handling of failure modes like duplicates, schema drift, outages, and rate limits
- High availability and failover architecture design
- Test strategy across unit, integration, end-to-end, and contract layers
- Pragmatic web automation using Puppeteer with stability-focused selector and wait strategies
- Process-driven approach to automating ambiguous manual workflows
- Edge-case-oriented debugging and hardening
- Led monolith-to-microservices migration to AKS with cross-region standardization
- Built unified observability stack (OpenTelemetry + Prometheus/Loki/Tempo + Grafana) with alerting across regions/AZs
- Delivered 99.9% production uptime and improved incident debugging/resolution via centralized monitoring
- Implemented DR/failover with standby environment and automated traffic switching based on health checks
- Automated infrastructure and delivery with Terraform + GitHub Actions, enabling releases in minutes
- Modernization execution with blue-green deployments, canaries, and staged rollouts to avoid regressions/SLA breaches
- CTO-facing roadmap ownership: translated ambiguous reliability/scalability goals into phased modernization plan and tradeoffs
- Built and productionized Kubernetes-native AI agent platform (AgScale) using Go CRDs/controllers with governance, budgets, and SRE-grade reliability controls
- Operated effectively with minimal oversight across multiple teams/vendors; launched 20+ internal systems in China while adapting to local regulations
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