Amar Khamkar Email and Phone Number

- Developed more than 40+ tools & still counting- Impacting 30k+ users per month- Writing articles on developing various tools, projects using different technologies

Designed -> code -> testing -> canary deployment -> monitoring -> Documentation Repeat ^HB Static Failover [PHP, Akamai]: • Developed and maintained static failover to handle infrastructure failures using Akamai rules,reducing 5xx errors to 0% on publisher pages.Client-Side JavaScript Serving [Typescript,express]: • Integrated the Protected Audience API (an alternative to third-party cookies) with other bidders, creating an additional revenue stream forthe team. • Designed a service for adslot performance, measuring total view time & total count, sent to our House Bidder, increased winning rate by 5-10%. • Fixed ad code wrapping logic,resolving 5-10% of ad rendering failures and 20-30% of logging discrepancies on Yahoo and other customers.Supply Side Platform (JS Stitching Service) [Golang, Kafka]: • Added logging of JavaScript and internal config size in Kafka. This helped developers reduce debugging time by 50% forfailoverrate issues on certain customers due to the Akamai 1MB limit. • Optimized pod memory usage by creating an HTTP client only once and serving the same instance for all subsequentrequests.Managed Prebid Solution [Typescript,express]: • Engineered a custom Targeting Flow using the Decorator Pattern, ensuring consistent targeting to Google Ad Manager.Kafka Dequeuer Service for Prebid [Spring Boot, Kafka]: • Derived internal agency and DSP Ids from other bidders using our internal DB mapping with a cron running every 30 minutes, achieving O(1) lookup. Logging these results with a 2-3% match rate.Cookie Syncing Service [PHP]: • Added redirection service that enabled cookie syncing with all bidders behind us with Prebid Server, increasing the cookie match rate by 10-20%.

- Developed multiple small & medium scale features for HackerResume & exploredA/B testing. Updated whole UI & functionality of hackerresume.Integrated CI/CD(travisCI) to hackerresume repository & wrote unit tests for the same.- Fixed the bugs which were occurring frequently & reported by users.- Worked with hackerrrank job-board(majorly in job scraping part) solved some of the issues thatdevelopers facing in the existing code-base & scrape some of tech job roles from web.