Build SDKs built on common client architectures (Web, Android, iOS) in order to help YouTube meet users• Built and led a team of software engineers in the development and improvement of YouTube's embedded video player across various platforms and devices. • Collaborated with the product management team to establish team vision, mission and roadmap, created and maintain yearly and quarterly OKRs.• Built embeds player performance improvement roadmap, built embeds player technical direction roadmap• Built scrum process with Taskflow and mentor coach team work with new processes like sprint planning, review, retrospective, understanding estimation points, velocity burndown, etc. Reporting the progress to stakeholders by building automated dashboard and spreadsheets.• Collaborated with cross-functional teams to launch high impact projects like Google Search partner features and Ads teams on regulatory compliance projects• Mentored and coached team members, fostering a culture of continuous learning and improvementTech stack: Web (JS/TS/HTML5), C++, mobile (Android and iOS)

Led and built engineer team to develop community builder platform (Facebook Groups product)• Built, retain, coach great engineering team• Built community builder platform to support groups, community messaging and page product on Android, iOS and server platform.Tech stack: PHP/Hack, C++, mobile (Android and iOS)

Leading team building AI/ML platform.Creating team SDLC process and CI/CDTech stack: Java, Python, Spring Boot, MySQL, AWS, Docker, Kubernetes

Led and built engineer team to develop platform services of Uplift online transaction platform. Created engineering process to ensure productivity of development that include CI/CD , automation build, automation test, code static analysis, code coverage check, QA test activity management, automatic release process.- Built Machine Learning based fraud detecting and underwriting platform- Rewrote and migrated monolithic application to Java based microservice architecture- Built a high efficient engineer team from ground up- Created engineering /software development process to increase productivity. - Designed and implemented development, QA, staging environments and process of software lifecycle managementTech stack:Java, Spring Boot, Spring Cloud, AWS, docker, DynamoDB, PostgreSQL, Amazon Kinesis Data Stream (MQ)

Led and guided software engineer teams. Delivered Samsung Pay, Bixby related services to millions of users. Built a solid engineering team from ground zero. Provided technical directions and architectures. - Built Samsung Pay Value added services including gift card mall, membership, deals, offers, reward, promotion. Helped Samsung Pay maintain millions of active users. - Built Samsung Bixby, a voice assistant involving AI, machine learningTechnical stack: Java, Java script, Micro services, mobile (Android) AWS, Docker

Delivered a mobile wallet solution can interact with Non-NFC POS and acquired by Samsung. Built great engineer team. Hands on every detail of system – coding/architecting key components. Created engineering process from zero including CI/CD, Automation build and test, code static analysis, code coverage check, QA process management, release process. - Built world’s first mobile wallet interacting with traditional (non-NFC) POS acquired by Samsung later and turned into Samsung Pay. - Built Engineering team from ground up and created engineering process to ensure productivity of team Technical stack: Java, Java script, Micro service, mobile (Android and iOS), Embedded C, AWS, Docker

Delivered mobile payment gateway and mobile (iOS and Android) frontend. Built and led great software engineering team. - Built mobile payment gateway using by many Europe banks todayTechnical stack: Java, mobile (Android and iOS)

Delivered mobile payment gateway and embedded client software in mobile POS system. - Built mobile payment gateway and mobile POS client softwareTechnical stack: Java, embedded system (C/C++)

Delivered mobile payment gateway and embedded POS system. - Built mobile POS solution (MIPS Embedded platform) and payment gateway to support itTechnical stack: Java, embedded system (C/C++), Windows C++

Contributed on eCommerce checked out gateway services. Built two factor authentication system for payment service.Technical stack: Java, C++

Worked on COBOL/Mainframe based banking and credit card processor system.