Sandip Mandal

About Sandip Mandal

Results-oriented Software Engineer with 2 years of experience building high-performance…

Experience

1. Software Engineer

   Jio Platforms Limited Jpl

   Jul 2023 — Present · Gurugram, IN

   Worked on large-scale backend systems supporting enterprise security and broadband session management, with a strong focus on scalability, reliability, and performance.SASE (Secure Access Service Edge) – Backend Systems• Contributed to a Java 8–based microservices platform for a SASE solution, enabling secure enterprise network access and endpoint protection.• Developed backend services to support distributed communication and coordination across multiple services.• Integrated Kafka-based asynchronous messaging, REST APIs, and internal RPC communication to enable reliable data flow.• Designed and maintained Aerospike-backed data layers used as both primary datastore and in-memory cache for low-latency, high-throughput workloads.• Optimized read/write performance using primary and secondary indexes in Aerospike.• Improved system reliability through enhanced concurrency handling using ConcurrentHashMap, reducing race-condition-related failures by ~30%.• Implemented bounded retry mechanisms for Kafka consumers, improving stability and reducing datastore timeout issues.• Participated in debugging, performance tuning, and production-readiness activities.BNG (Broadband Network Gateway) – Session Management• Built a Spring Boot service using Redis/KeyDB (Lettuce synchronous API) to persist broadband session data for ~4.95 million users.• Implemented robust session persistence and automated recovery workflows, eliminating manual session resets and improving service availability.• Designed optimized KeyDB schemas, leveraged pipelined operations, and tuned connection pools for high-concurrency traffic.• Worked with Active–Active KeyDB deployments to improve fault tolerance, latency, and availability.• Added monitoring and fault-detection logic for automated alerts and faster issue resolution.• Collaborated closely with networking, platform, and operations teams to ensure stable production deployments.