# Sakthikumar Ponnusamy > Engineering at Meta - ex-Amazon, ex-Intuit, ex-Sony Location: San Francisco Bay Area, United States Profile: https://flows.cv/sakthikumar I’m a Staff Software Engineer with nearly two decades of experience designing and scaling products that serve billions of users worldwide. My background spans fintech, payments, robotics, mobile banking, media platforms, and IoT—driven by a passion for building secure, scalable, and high-impact systems. Expertise: AI/ML, Model training/fine-tuning, On-device inference, Agentic Frameworks, Payments, Fintech, Large-Scale Platforms, Mobile Technologies, Robotics, DRM & Media Systems, IoT Strengths: End-to-End Architecture, Secure Systems, Scalability, Cross-Functional Leadership, Mentorship ## Work Experience ### Staff Software Engineer @ Meta Jan 2020 – Present | San Francisco Bay Area * Tech leads the end-to-end architecture and development of WhatsApp India Payments, and building seamless peer-to-peer and merchant transactions. * Driving the design and rollout of enterprise payment products on WhatsApp, taking them from concept to large-scale adoption. * Working closely with product, design, and business teams to deliver intuitive, secure, and scalable payments product in WhatsApp Android/iOS. * Mentoring engineers, introduced architectural and process improvements to strengthen mobile product development and long-term platform scalability. ### Software Development Engineer @ Amazon Jan 2018 – Jan 2020 | San Francisco Bay Area * Astro Robot - https://www.amazon.science/blog/astros-intelligent-motion-brings-state-of-the-art-navigation-to-the-home * Core engineer on Amazon Astro robotics, designing and implementing launcher applications and proactive interaction experiences. * Led the adoption of modern mobile frameworks (MVVM, RxAndroid) to improve development practices. * Reduced defects and boosted engineering efficiency by modernizing architecture and tooling. * Enhanced overall system responsiveness and user experience through performance-focused development. ### Staff Software Engineer @ Intuit Jan 2012 – Jan 2018 | San Francisco Bay Area (Intuit Financial Services acquired by NCR later) * Led the end-to-end redesign of Intuit’s mobile banking platform, serving 15+ million users. * Delivered key mobile features including Login, SSO, Remote Deposit Capture (RDC), Money Transfer, and introduced eye print and voice print authentication for secure login. * Automated release processes, tripling deployment velocity and improving delivery efficiency. * Optimized network performance, reducing latency by 50% to enhance mobile user experience. * Scaled the platform to support 650+ financial institutions, enabling enterprise-wide adoption. ### Founder @ Non-Profit Advisor & Technologist Jan 2011 – Jan 2015 Founded and led a non-profit initiative providing technical guidance, architecture strategy, and product-building support to mission-driven startups such as LogiNets Oy. Designed and developed Hejje, a mobile and sensor-based wildlife tracking application, successfully deployed across multiple reserve forests in India (including Bandipur). Recognized and featured in leading publications including National Geographic, Times of India, Deccan Herald, New Indian Express, India’s Endangered, Deccan Chronicle, and Wildlife Trust of India, highlighting the system’s role in transforming wildlife protection. ### Technical Lead @ Sony Jan 2008 – Jan 2012 * Led The Open DRM Framework, integrated into the Android Open Source Project(AOSP) and deployed on billions of Android devices. http://developer.android.com/reference/android/drm/package-summary.html * Developed Sony’s proprietary DRM plugin and MPEG4 parser, enabling secure, high-performance media playback across millions of devices. * Redesigned Sony’s media player, improving playback efficiency by 80%+. * Designed a JavaScript library for DLNA device discovery to simplify cross-device interactions. * Led development of a cross-platform image browser for Android and iOS, enhancing user experience across multiple platforms. ### Member Technical Staff @ HCL Technologies Jan 2007 – Jan 2008 | Chennai Area, India * Designed and implemented monitoring widgets for Cisco security devices to track system health and usage. * Developed an intuitive dashboard with advanced visualizations to analyze historical trends and optimize device policies using RHI (Route Health Injection) and PISA. * Delivered robust, high-quality features while consistently resolving critical production incidents within SLA. * Ensured system reliability and operational excellence through proactive monitoring and efficient issue resolution. ### Software Developer @ xMobile Solutions Jan 2005 – Jan 2007 | Coimbatore Area, India * Developed innovative mobile applications like Proxpro and Jumptap on J2ME for Nokia, Motorola, and Samsung devices, deployed on nearly half a million devices. * Built the Zeetoo hands-free gaming app using a proprietary IoT protocol, quickly adopted by 10,000+ users. * Focused on creating engaging, user-friendly mobile experiences that leveraged emerging mobile and IoT technologies. ## Education ### Applied AI/ML and Data Science MIT Professional Education ### Bachelor of Engineering (B.E.) in Computer Science Anna University Chennai ## Contact & Social - LinkedIn: https://linkedin.com/in/sakthiponnusamy --- Source: https://flows.cv/sakthikumar JSON Resume: https://flows.cv/sakthikumar/resume.json Last updated: 2026-04-12