•Independently designed and led the development of a new feature, identifying changes across the data pipeline and managing the entire project lifecycle from planning to deployment, emphasizing scalability and performance optimizations.•Built and optimized a low-latency Spring Boot-based database reading service, delivering millisecond response times for queries and scalable performance for large datasets, meeting stringent performance requirements.•Developed a widely-used, robust database accessor library with integrated resource management, system health checks, and failover handling, simplifying big data operations, enhancing team productivity, and improving system resilience.•Created a SQL-like querying client for HBase using Spring Boot, enabling seamless access to large-scale databases and significantly improving developer efficiency across various use cases.•Conducted resilience testing for critical services and clusters, ensuring reliability and peak performance under high traffic and peak load conditions.•Developed and maintained scalable backend systems to support data aggregation and processing, leveraging distributed system tools such as HDFS, Hive, HBase, and Spark.•Designed optimized NoSQL table schemas for fast reads and storage efficiency, achieving 40% storage savings and improved query performance on terabytes of data.•Engineered a Spark and Scala-based bulk load tool, reducing data ingestion times by 30% and enhancing system scalability for large-scale processing.

Designing and implementing streaming API requested by Atlassian customer to unblock migration to Atlassian Cloud.Connected Amazon Kinesis to internal Atlassian services to act as stream source and for replay capabilities.Use Server-sent events to stream to customers subscribed that subscribed using Spring framework.

Designed and integrated a new database and analytics service to AWS Glue Elastic Views.Experience with multiple AWS technologies like DynamoDB, ECS, and Kinesis Data Streams.Designed and implemented a system to store operational metadata using DynamoDB to enforce concurrency control.Developed and maintained cloud infrastructure for project operations using AWS CDK.