Gaurav Saini

Engineer | Data Structures | Algorithms | Java | Distributed Systems

Gurugram, Haryana, India

About

Experience

  • SDE 3 at MongoDB
    May 2026 - Present · 2 mos

  • Senior Software Engineer at Expedia Group
    Mar 2026 - May 2026 · 3 mos

  • SDE 2 at Amazon
    Mar 2022 - Feb 2026 · 4 yrs

    – Owning end-to-end delivery of a large-scale greenfield platform, driving requirement analysis, system design (HLD/LLD), implementation, testing, deployment, and long-term maintainability across distributed frontend, backend, and AWS cloud infrastructure.– Architected and built reusable horizontal services including ForeignExchangeService, enabling multi-currency and multi-country expansion; service is consumed by 20+ internal microservices with strict availability, latency, and correctness guarantees.– Led a cross-functional tiger team of 3 SDE-1s and 2 SDE-2s to design and deliver a high-throughput f inancial reporting and analytics platform processing 100+ GBs of data across 20+ upstream systems.– Designed and implemented a near real-time cost tracking and variance analysis system to monitor contingency usage for Amazon-managed $8.5B+ global construction portfolio, including $327MM contingency funding, directly supporting finance and executive leadership decisions.– Defined scalable data models, optimized ingestion pipelines, and implemented fault-tolerant aggregation workflows to ensure data accuracy, consistency, and performance under high data volume and concurrency.– Actively mentoring junior engineers, driving code quality, reviewing designs, and influencing architectural decisions across teams to ensure long-term scalability and operational excellence.

  • Software Engineer at Nykaa
    Oct 2020 - Mar 2022 · 1 yr 6 mos

    Backend Engineer(spring boot)