M Raafay Khan Email & Phone Number

Islamabad, PK

• Proposed and spearheaded the transition of 5+ monolithic modules to microservices using Go and Docker, boostingcapacity from 2,000 to 30,000 nodes.
• Implemented a distributed, load-balanced network discovery service, improving discovery speed by 220%.
• Refactored a monolithic java based IoT network state generator application, achieving a 300ms response time pernode request with 2000 nodes, in line with SLA requirements.
• Collaborated with product management to implement a RFC protocol bridging gaps identified through analysis. This initiative resulted in a 30% increase in engineering efficiency and a 70% reduction in post-release issues.
• Enhanced system performance by implementing caching and memoization strategies using Redis, reducing p95 APIresponse time by approximately 400%.Managerial Responsibilities:- Write and review RFCs - Interview, mentor.

• Engineered a distributed highly scalable Routing SaaS: Leveraged AWS Fargate enhancing routing capacity from64 to 2000 concurrent operations also resulting in reduction of AWS compute costs by approximately 95%.
• Designed and developled a High-Performance Calculations Engine using JavaScript with GRPC that seamlesslyintegrates across 6+ microservices, handling over 30,000 requests per hour while maintaining 50ms SLArequirements.
• Led the development of a ZATCA-compliant taxation and compliance module, generating over 2,000 secure taxreceipts per hour and boosting revenue by AED 25M monthly and enhancing market analytics.
• Engineered a recommendation engine leveraging Redis and deferred refreshing strategies for dynamically sortingproduct lists for each user. This reduced product load times by 35% and decreased database queries by ~20%.
• Directed Retailo's fintech engineering team, expanding the team size by 65%. Recruited, mentored, and led a high-performing team to drive innovation and growth within the company.Technologies:Stack: Nodejs, NestJs.