Roshni Lingam

About Roshni Lingam

Backend Software Engineer with experience building large-scale, distributed, and highly available systems using Java, Spring Boot, and AWS. Currently a Software Engineer at Amazon (Payments Platform), contributing to mission-critical payment services that operate at massive scale and power high-traffic global events such as Prime Day.I focus on designing and optimizing cloud-native backend systems with a strong emphasis on reliability, performance, security, and operational excellence. My work spans service scalability, infrastructure automation, authentication modernization, and latency optimization in production environments handling millions of transactions per minute.**Impact at Amazon:**Scaled a core payments service to handle 1.4M+ TPM, maintaining 100% availability and consistent latency under peak loadDesigned a fail-fast pre-prod stage within production using AWS CDK, reducing deployment risk by 40%+Led migration of authentication flows to OAuth 2.0 across 5 critical services with zero downtimeBuilt serverless automation tools (Java + AWS Lambda) saving 11+ engineering hours/weekUpgraded critical services to JDK 17, achieving 20% latency reduction and higher throughputBeyond production systems, I have hands-on experience building microservices-based platforms, secure REST APIs, and event-driven systems, applying best practices like API Gateway, Circuit Breaker, Service Discovery, Distributed Tracing, and Reactive Programming.I bring a strong problem-solving mindset, backed by 400+ Data Structures & Algorithms problems solved on LeetCode, and I enjoy tackling ambiguous problems, owning systems end-to-end, and writing clean, maintainable code. Seeking SDE-1 / Backend Engineer roles where I can work on high-impact systems at scale and continue growing as a software engineer.

Experience

1. Software Engineer

   Amazon

   Feb 2024 — Present · Bengaluru, IN

   Part of Payment Service Team- Scaled a top-tier Payment Service to handle 1.4 million transactions per minute, ensuring 100% service availability during high-traffic events- Migrated API authentication protocols for 5 tier-1 services with 100% uptime, enhancing security by implementing OAuth 2.0. Leveraged Java Spring Beans and applied Google Guice for dependency management, improving modularity and maintainability- Designed and launched an automation tool to automate ticketing SOPs by leveraging Java and AWS Lambda, saving 11+ engineering hours per week and maximizing team productivity. Employed Infrastructure as Code using AWS CDK to simplify the creation of AWS resources and resource policies. Integrated internal services and APIs with the tool, optimized high-level design to reduce costs by 2%, and applied design principles to enhance code modularity.

Education

• G.H. Raisoni College of Engineering(GHRCE), Nagpur

  Bachelor of Technology - BTech, Computer Science and Engineering

• Podar International School, Nagpur

  Passed grade 10th

• Sri. Shivaji Science College, Congressnagar,Nagpur

  Passed grade 11th and grade12th , Science

  2017 — 2019