Ankur Rana

About Ankur Rana

Senior software engineer and system architect with 10+ years of experience optimising and improving performance on large-scale distributed systems. Currently at Microsoft, building AI-powered Copilot Agents that serve employees globally.Here\'s a snapshot of what I\'ve delivered:Optimised search architecture at Tokopedia (Goto Group), reducing p99 latency from 210ms to 105ms — a 50% improvement — by tuning Elasticsearch index mappings, shard strategy, and data distribution across high-throughput servicesBuilt an open-source Index Mapping Analyser (Golang) that automated Elasticsearch configuration optimisation across 100+ production clusters at scaleDecomposed a monolithic application into event-driven microservices communicating via Kafka, designing, building, and maintaining them as the sole developerArchitected a real-time tracking platform for Dominos Delivery Partners handling millions of requests per second — enabling live driver-to-customer visibility at scaleLed the onboarding of multiple Fortune 500 enterprise customers onto Microsoft\'s ESS platform, directly contributing to product revenue growthCore expertise: Golang (Go) · TypeScript · Java · Elasticsearch · Apache Kafka · gRPC · Redis · PostgreSQL · Docker · Terraform · GCP · AWS · System Design (HLD/LLD) · Microservices · Event-Driven Architecture · LLMs · Microsoft Copilot StudioI\'m passionate about system design, performance engineering, and leveraging AI to accelerate software delivery. Always open to connecting with fellow engineers, architects, and anyone working on interesting distributed systems challenges.

Experience

1. Senior Software Engineer

   Microsoft

   Oct 2024 — Present · Bengaluru, IN

   Building ESS, an AI-powered Copilot Agent that streamlines employee interactions with HR and IT systems, serving Microsoft\'s global workforce of employees.Took end-to-end ownership of the extensibility platform post engineering; resolved critical production blockers that unblocked ESS rollout for multiple strategic enterprise customers, maintaining customer confidence and retentionDesigned and implemented natural-language workflows powered by LLMs and Microsoft Copilot Studio, reducing average HR/IT task completion time by replacing multi-step manual processes with conversational interactionsLed the onboarding of multiple Fortune 500 and multi-million dollar enterprise customers onto the ESS platform, directly contributing to product revenue growth and market expansionStreamlined customer support channels and built internal knowledge-sharing processes, reducing support ticket resolution time and enabling the support team to handle issues independentlyMentored and onboarded new engineers to the project, distributing ownership across 3 additional contributors and improving execution velocityProactively joined customer escalation calls, resolving blocking issues within hours and ensuring uninterrupted ESS adoption momentumTech: Microsoft Copilot Studio, LLMs, Enterprise Integrations

Education

• JSS

  Bachelor of Engineering (B.E.), Computer Science

  2011 — 2012