Mohit Kumar

Software Engineer

Propellyr Inc.•  May 2022 - June 2024

Designed a highly concurrent API calling service using AWS Lambda and AWS SQS to replace old Java executor pool service for updating metadata of 1 million plus entries, reducing execution time by 80%. Optimized ClickHouse queries for efficient analysis of 100 million-row Crypto Transaction data, achieving sub-10 millisecond response times. Built high-performance Apache Spark pipeline for Ethereum data processing (4GB/hour), reducing data storage by 90% using partitioning and Parquet compression, enabling efficient analysis. Built an orchestration pipeline for a fast query interface, slashing spin-up time from over a minute to 25 seconds, resulting in a 75% performance improvement. Migrated from AWS EC2 to AWS ECS, for better horizontal stability and automation. Developed multiple Spring Boot microservices to analyze transactions across diverse DeFi platforms such as Aave and Uniswap. Engineered a high-performance logging ingestion pipeline using Apache Kafka and rsyslog, processing 4GB/hour with low latency.