Aug 2022 – May 2024 · 1 yr 9 mos

• Tech Stack:
• Android, Java, C++, NodeJs, ReactJS
• > Enabling Notifications in 3P Alexa Device.
• > Enabling DRM protection in 3P Alexa Device.
• > Created multiple Alexa Skills.
• > Learning for AWS Cloud certifications
• > Amazon Security Certifier, responsible for certifying applications.

Sep 2021 – Jul 2022 · 10 mos · Bengaluru, Karnataka, India

• Tech Stack- Java, Spring Boot, Cassandra, Redis, MsSql AWS Services- OpenSearch, SQS, DMS, Lambda, EC2, S3.
• 1) PnL Report V4: Created a DMS task to migrate SQL tables to ElasticSearch Index (OpenSearch). Ran multiple load tests using Apace Jmeter on lambda, and EC2 using multiple configurations to squeeze out every ounce of performance. Introduced multi-threading using executor service to further increase the TPS (Transactions per second). Migrated the report generation process from being synchronous to asynchronous using SQS Result: TPS increased from 200/s to 1500/s for 5 million users' 10 years data = 14Billion records on each ES index.
• 2) Paper Trading: Designing a new system from scratch to enable users to trade on our platform without using the real-world currency. Exploring Cassandra for this.
• 3) Query Optimization: Added pagination in multiple sql query in a cleanup job to introduce batch processing of data. Result: Now the job can handle huge data.

Jun 2021 – Sep 2021 · 3 mos · Gurugram, Haryana, India

• Tech Stack - Python, Flask, Java, Spring Boot, PostgreSQL, Kafka, Elastic Search, Redis, AWS.
• Developed a new service from scratch used for maintaining Ledger of all the changes in the inventory. Integrated 3 services with the Ledger service through Kafka (Asynchronous) to capture any change in inventory.
• Automated the task of identification and flushing of the expired/damaged inventory. Developed 3 APIs to revamp the existing process by introducing features that will decrease the time by 10x.
• Responsible for the onboarding of new developers

Feb 2021 – May 2021 · 3 mos · Gurugram, Haryana, India