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sushant kumar
Mid-level Full-Stack Engineer specializing in AI and LLM-powered systems
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Shopify full-stack engineer focused on AI/LLM-powered merchant automation products. They have hands-on experience building React/TypeScript and Python/FastAPI systems for long-running agentic workflows, including orchestration, guardrails, observability, and customer-facing trust features, with measurable gains in task completion and latency.
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Key Strengths
- Built end-to-end AI-powered merchant workflow platform at Shopify
- Strong full-stack ownership across React frontend and Python/FastAPI backend
- Designed event-driven microservices architecture for long-running workflows
- Implemented reliable LLM tool-calling with validation, retries, and guardrails
- Built workflow orchestration layer and state machine systems
- Production deployment on AWS and Kubernetes with observability instrumentation
- Data-driven evaluation mindset using task success, latency, and response quality metrics
- Customer-centered AI product design focused on trust, transparency, and control
- Improved task completion rates by 35% and reduced workflow latency by 25%
- Launched merchant assistant feature that improved task completion by 25%
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