KOUSHINDRA KUMAR

• Designed and deployed scalable microservices using Java, Spring Boot, and Kafka, ensuring high availability and fault tolerance.
• Built event-driven pipelines with Akka Streams to process parallel Kafka events for real-time processing.
• Implemented distributed system patterns (Circuit Breaker, Event Discovery, Saga, CQRS, Pub/Sub) to improve system resilience and consistency.
• Automated CI/CD pipelines in Buildkite with SonarQube scans, JUnit tests, and multi-environment deployments.
• Provisioned and managed GCP infrastructure (Pub/Sub, BigQuery, service accounts) via Terraform for reproducibility.
• Enhanced observability using Datadog, ELK, and Kubernetes monitoring, reducing MTTR during production incidents.
• Managed Kubernetes clusters (deployments, scaling, DNS, quotas) for optimized performance and cost efficiency.
• Mentored 4+ junior engineers, conducting code reviews, pair programming, and technical sessions.
• Led on-call rotations, performed RCA for live issues, and collaborated with stakeholders for quick resolution.

● Strategic Campaign Development: Led the design and execution of a targeted campaign feature leveraging Java Spring Boot, MongoDB, MySQL, Elasticsearch, and Redis.

● Market Penetration: Strategically tailored the campaign to deepen market reach, resulting in a substantial 20% uplift in customer acquisition by offering personalized incentives.

● Direct Business Impact: The personalized campaign initiative directly contributed to a notable 15% increase in overall company profits, fortifying brand loyalty.

● Collaboration & Integration: Fostered cross-departmental collaboration to ensure the campaign's flawless integration across various platforms and customer touchpoints.

● Data-Driven Optimization: Continually analyzed campaign KPIs, optimizing offers in real-time, which sustained and even improved customer engagement rates throughout the campaign duration.

• Led and mentored a team enhancing payment integration systems with Spring Boot and REST/SOAP services.
• Applied MVC and Repository patterns, ensuring clean architecture and maintainability.
• Optimized MySQL and MongoDB/Elasticsearch with sharding and indexing to improve query performance.
• Automated builds with Maven and JFrog Artifactory, ensuring reusable and reliable artifacts.
• Implemented CI/CD pipelines (Git, Jenkins, Docker, Helm) for streamlined Kubernetes deployments.
• Documented APIs with Swagger, enabling easy integration and collaboration across teams.

• Developed FLEX83 PaaS system for IoT using Java, Kafka, MQTT, Spring Boot, and Hibernate.
• Applied Hystrix and Circuit Breaker patterns to ensure system fault tolerance.
• Improved database performance by optimizing MongoDB and MySQL connectors with indexing, sharding, and query optimization.
• Deployed services on AWS (EC2, S3, Lambda, RDS, EKS, CloudFront, IAM, VPC) with Docker and Kubernetes.
• Implemented JUnit and Mockito tests for automated validation and better code reliability.
• Provided technical support, performed RCA for critical issues, and introduced automated alerts to reduce downtime.
• Integrated Kafka real-time streaming with Spring Cloud Stream and optimized consumption using multithreading.