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Shiva Kumar
Mid-Level Full-Stack Developer specializing in Java/Spring Boot and React in banking
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About
Full-stack engineer (4+ years) with Citigroup experience building a modular banking dashboard using React/TypeScript/Redux and a Java Spring Boot microservices backend (12+ services) integrated with Kafka. Strong in reliability/observability and cloud operations on AWS (EC2/S3/Lambda, CloudWatch, Prometheus, ELK, IaC with Terraform/CloudFormation), with quantified improvements in latency, development speed, and data pipeline correctness.
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Key Strengths
- Owned end-to-end modular banking dashboard delivery (frontend, backend microservices, deployment)
- Built reusable React/TypeScript component system; reduced time to build new modules by 30%
- Engineered 12+ microservices integrated with Kafka for real-time processing; reduced critical pipeline latency by 20%
- Designed idempotent Kafka consumers to prevent duplicate-event data inconsistencies
- Implemented retries/caching for third-party integrations; improved response time by 30%
- Optimized SQL/MongoDB queries for backfills; reduced data retrieval time by 40%
- Set up observability with Prometheus/CloudWatch and ELK-based logging/alerting across services
- Cloud migration from monolith to microservices in a high-ambiguity environment (real-time fraud detection requirements)
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