# Balachandar Sampath > Software Engineer @ Box | Ex-Meta, OCI, Visa | Backend & Full-Stack | AI Native Engineer Location: San Francisco Bay Area, United States Profile: https://flows.cv/balachandar As a software engineer, I specialize in building and optimizing large-scale distributed systems. At Oracle, I contribute to the Oracle Cloud Infrastructure team by developing solutions like caching and hedging algorithms, resulting in significant performance improvements, including 2x reduction in worst-case response times. My role also encompasses feature validation through rigorous testing and metrics analysis, ensuring seamless and reliable production rollouts. Previously at Meta, I played a pivotal role in driving revenue growth for Click to WhatsApp Ads, leveraging data-driven experimentation and full-stack development to enhance user engagement. My expertise spans system performance optimization, data pipeline development, and collaborative feature design to deliver impactful results. Dedicated to innovation, I aim to solve complex technical challenges that empower teams and create value for users. ## Work Experience ### Software Engineer @ Box Jan 2025 – Present | San Francisco Bay Area ### Software Engineer @ Oracle Jan 2024 – Jan 2025 | San Francisco Bay Area Spearheaded performance improvements for Oracle Cloud Infrastructure’s Object Storage service by developing features such as caching and hedging algorithms to optimize object retrieval latency. Designed and implemented a hedging algorithm to mitigate tail latency in object retrieval, achieving a 2x reduction in worst-case response times. Developed a caching layer for small object retrieval that reduced backend storage calls and data hotspotting, improving overall latency by 40%. Executed comprehensive feature validation using load testing, pre-prod simulations, and dashboard metrics to ensure safe, phased production rollouts. Mentored junior engineers, reduced on-call incidents by identifying root causes through in-depth analysis and fine tuning the alarms. ### Software Engineer @ Meta Jan 2019 – Jan 2023 | Menlo Park, California, United States Business Messaging Monetization/Click to WhatsApp Advertisement Business Messaging Growth Small Business and Products Growth Pages Growth Contributed to Meta’s Ads Monetization team by building features to help grow Click to WhatsApp Ads revenue, which was generating $1.5B as per public quarterly earnings report. Leveraged data-driven experimentation (A/B testing, funnel analysis) to identify growth opportunities and influence product roadmap decisions. Delivered cross-functional features such as linking WhatsApp numbers to Instagram/Facebook profiles, enhancing top of the funnel for generating more Click to WhatsApp Ads revenue. Executed full-stack development using ReactJS, mobile frameworks, data pipelines, graph databases, GraphQL, and PHP; also supported ML model training through label preparation. Created Click to WhatsApp Ads for the Instagram Reels surface, opening a new revenue stream by enabling direct business engagement within Reels. Developed an insights dashboard to track ads performance, conducted privacy/integrity/data reviews, and executed a phased production rollout. Won top-fixer award in Meta’s org-level Fixathon for outstanding issue resolution impact and cross-system bug fixes. ### Software Engineer Intern @ Visa Jan 2018 – Jan 2018 | Bellevue, Washington Developed a dashboard in AngularJS to show merchant statistics and integrated Google Analytics. Automated SQL script generation thereby reducing 99% time by creating a UI tool using electron framework. Won VISA global hackathon by securing two prizes in the competition. ### Full-stack Developer (Associate Systems Analyst) @ Visa Jan 2015 – Jan 2017 | Bengaluru Area, India Cloud Provisioning Service Projects Built a compliance assurance web app using Java Spring, MongoDB, and AngularJS, improving Visa’s cloud provisioning security and reducing manual effort by 40%. Engineered a monitoring infrastructure to observe hostmetrics of deployed servers with Logstash, Elasticsearch, Kafka, and NodeJS, and created a dashboard and alerts, significantly enhancing system availability and reliability. Developed REST APIs using Spring to interface with HP ILO remote consoles, enabling secure and efficient server access and management. Researched and registered two Trade Secrets with Intellectual Property Division of VISA Inc and got patent awards. Payment Technology Tokenization Projects Led development of a web app using Java, AngularJS, and MySQL that accelerated onboarding of new banks to Visa’s Tokenization Service (e.g., Apple Pay), reducing setup time by 40%. ### In plant trainee @ HCL career devlpment center Jan 2013 – Jan 2013 | Chennai, Tamil Nadu, India Networking, System Administration ## Education ### Master's degree in Computer Software Engineering Arizona State University ### Bachelor of Engineering (B.E.) in Computer Science and Engineering Anna University Chennai ### H.S.C in Mathematics, Biology Kamaraj Matriculation Higher Secondary School ### S.S.L.C in Science, Mathematics Kamaraj Matriculation Higher Secondary School ## Contact & Social - LinkedIn: https://linkedin.com/in/balachandarsampath --- Source: https://flows.cv/balachandar JSON Resume: https://flows.cv/balachandar/resume.json Last updated: 2026-04-11