Anand Singh Email & Phone Number

Bangalore Urban, Karnataka, India

• Upgraded the Haskell compiler version from GHC 8.10.7 to GHC 9.2.8 across repositories and libraries. This upgrade eventually led to code cleanup and data structure changes, open-source library upgrades, sandbox Docker.
• Optimized and unit-tested diverse functions and flows at the domain and framework levels to make them more efficient and scalable. This effort improved the overall throughput per core by 10% on the AWS EC2 instance of.
• Operated in a team on standardizing the methodology for analyzing the system performance of the Haskell codebase. This included incorporating benchmarking methods such as event logging for monitoring multithreads, CPU.
• Developed a Slack alert system for monitoring the throughput of our distributed system and tracking day-to-day changes across all our payment microservices and RESTful APIs. These APIs fetch data from Victoria Metrics.
• Added features like serialization, fixed parser issues and upgraded package support for GHC 9.2.8 compiler version in multiple open-source Haskell libraries such as fast-time and streamly-serialize-instances.

Bengaluru, Karnataka, India

• Designed scripts and dashboards for analyzing distributed system performance, generating reports, and comparing deployment performances. This effort made our analysis 10 times more efficient.
• Designed and developed features such as buy-now-pay-later and split-settlement flows, establishing a standard for integrating these payment methods across all payment gateways.
• Created CRUD APIs in PureScript for MySQL and PostgreSQL databases, implementing diverse payment features offered to merchants.
• Integrated payment gateways with Juspay’s backend infrastructure, which processes at least 30 million daily transactions.
• Migrated cryptographic functions from Javascript to Haskell which made functions more efficient, secure and type-safe.
• Managed domain-related errors, handled on-call issues and conducted peer code reviews.