Anupam Kumar

Software Engineer II at Gojek (2025-05 – Present)

• Architected a high-throughput Home page in GoFood app, then migrated full page from different microservices
• Deep-dived into Elasticsearch internals to overhaul search relevance; implemented custom query DSL for distance-based ranking and keyword mapping, resolving critical sorting inconsistencies in high-density urban areas
• Spearheaded backend observability improvements across multiple microservices by implementing structured error classification. Filtered out noise, leading to highly accurate SLA/SLO metrics, refined circuit-breaker thresholds, and significantly reduced MTTR during production incidents
• Streamlined microservices architecture by leading the migration of legacy data integrations to a unified Search API, successfully decoupling core backend dependencies and modernizing platform architecture
• Optimized Elasticsearch ingestion pipelines via semantic job filtering, reducing redundant requests
• Delivered critical backend features across discovery, search, and booking services; established robust A/B testing guardrails to prevent panics and ensure high system availability

Software Development Engineer - 1 at Juspay (2023-07 – 2025-05)

• Spearheaded end-to-end development of a UPI payment processing system encompassing business flow orchestration, atomic transactions, and NPCI certification across all UPI features
• Architected and implemented core REST APIs, retry mechanisms, and event-driven workflows using Kafka, ensuring high availability and fault tolerance at scale
• Engineered a robust observability pipeline — logging, monitoring, and metrics — for 1M+ daily transactions using OpenTelemetry, Prometheus, and ClickHouse, enabling real-time visibility into system performance
• Engineered PPI CBS API integration and traffic shaping with Kafka, developing a dynamic bank adapter to standardize and streamline interactions across multiple bank APIs
• Led the design and development of a Card Management System, including card authorization APIs, database architecture, and SDK integration with end-to-end encryption
• Secured all external communications for 1M+ daily transactions by implementing end-to-end encryption (JWE/JWS) and pin verification with HSM integration

Associate Software Development Engineer at Juspay (2022-08 – 2023-06)

• Designed and delivered a large-scale real-time customer complaint resolution system for UPI, integrated with Google, Amazon, and CRED, reducing pending transactions by 57%
• Implemented and Certified UPI-on-credit-card architecture, enabling EMI and bill payment functionality within the UPI stack
• Optimized Haskell code for high-throughput performance; conducted load testing at 20K TPS and resolved critical production bugs
• Led the design, development, and certification of ACS for Rupay Card Authentication

Software Development Engineer Intern at Juspay (2022-03 – 2022-07)

• Optimized UPI APIs by 10x, adding batch encryption & pagination
• Automated data issue resolution for 20K+ UPI customers with scheduled scripts
• Integrated risk check to transaction logic to successfully enable merchant UPI operations

B.E. in Electronics and Communication Engineering – Thapar Institute of Engineering and Technology (2018-07 – 2022-06)