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Ayyappan Manikandan

Senior Software Engineer specializing in backend microservices and distributed systems

WalmartCleveland State UniversityUnited States7 Years ExperienceSenior LevelWorks On-Site

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About

Senior software engineer (5+ years) from Walmart Global Tech who owned and operated high-scale supplier inventory submission systems, including a microservice handling submissions up to 500k items and a data platform processing ~10TB/day. Strong in AWS/Kubernetes (EKS), Kafka/Spark streaming + batch pipelines, and production operations (on-call, metrics/alerting), with demonstrated performance wins (30% faster responses, 50% faster processing).

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Key Strengths

  • Owned end-to-end production microservice for supplier inventory submissions (up to 500k items per submission)
  • Designed scalable stateless services on AWS EKS with Kafka-based real-time streaming
  • Built monitoring/alerting with CloudWatch and custom metrics (throughput, latency, error rates) and handled on-call incidents
  • Performance optimization driven by metrics (reduced response times by ~30%)
  • Scaled data processing to ~10TB/day by migrating workloads to Apache Spark (cut processing time by ~50%)
  • Implemented reliability patterns (automated retries, idempotent processing, deduplication) and managed schema evolution with schema registry/versioning
  • Improved scalability for traffic spikes via Kafka partitioning and Kubernetes autoscaling; managed infra with Terraform
  • Used observability to quickly diagnose and resolve production bottlenecks (DB query/index fix resolved issue in under an hour)

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Experience

Senior Software EngineerWalmart Global Tech · Sep 2023 – Present
Member of Technical StaffZoho Corporation · Sep 2019 – Jul 2022
Software EngineerWipro · May 2018 – Jul 2019

Education

Cleveland State Universitymaster, Computer Science
Anna Universitybachelor, Computer Science

Languages

English

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Ayyappan ManikandanSenior Software Engineer specializing in backend microservices and distributed systems