kallal Roy

Principal Software Engineer/SDE3

• Job Details:Led a team developing a data lake using change data capture (CDC), achieving a 40 percent cost reduction and a 10x performance improvement. Served as the primary developer for proof-of-concept (POC) efforts, evaluating and recommending the best-fit solutions based on team skillsets and industry standards for technologies such as Kafka (Confluent, MSK, Redpanda, etc.), Debezium (stand alone, connector based), and Kafka Connect (different connector), Clickhouse. Developed two microservices: one for component deployment of connectors and another for a notification service equipped with self-healing and auto-recovery mechanisms for enhanced error handling. Took ownership of CDC observability, implementing monitoring and alerting using Prometheus, Grafana, Redis pub/sub, PagerDuty, GChat, and email notifications. Built a centralized command center to manage services, deployments, and monitoring workflows, significantly reducing developer effort and manual errors. This initiative led to a 30 percent reduction in production incidents, improving the reliability of the system and operational efficiency.

Member of Technical Staff

• Job Details:Led a team developing a payment gateway solution, focusing on back office, merchant onboarding, and underwriting. Owned the end-to-end development of 20+ feature releases, improved the auto-approval rate from 17 to 63 percent, and integrated 15+ KYB (LexisNexis) and KYC (Experian, TransUnion) vendor solutions using third party REST and SOAP APIs. Contributed in the development of 5+ RESTful microservices using Java, Spring Boot/Cloud, JUnit, Liquibase, Kafka, Activity BPM, and Angular. Provided production support, resolved incidents, and monitored live environments. Led cross-team collaboration, participated in design discussions, and performed code reviews to ensure high-quality deliverables.

Software Engineer

• Job Details:Developed a chatbot using AWS Lex for a logistics client, enabling seamless communication with end users on multiple messaging platforms, including Facebook Messenger, Viber, and WhatsApp.