Harpreet Singh

Senior Software Engineer with 7 years of experience building and deploying scalable backend applications and microservices using Java, Kotlin, and Spring Boot. Skilled in developing high-scale distributed, cloud-native systems, integrating AWS services, and resolving complex production issues. Experienced across the full development lifecycle, including development, testing, deployment, infrastructure planning.

• Built and scaled backend microservices powering Airtel Work platform supporting enterprise field operations. • Led decomposition of large Task Service into domain-specific microservices, improving scalability, deployment velocity, and maintainability. • Designed and developed B2B Acquisition microservice from scratch enabling LOB-specific workflows and extensibility.

• Developed backend services supporting invoicing, payments, expenses, and credit workflows in Paytm’s business platform. • Built configurable multi-stage approval systems enabling permission-driven and conditionbased workflow approvals. • Designed scalable workflow architecture supporting dynamic rule creation and extensible approval pipelines.