Sai Kumar

Sr. Java Developer/ Full Stack Developer

Role: Full Stack Engineer at Walmart
Location: Dallas, TX, US
LinkedIn followers: 500 followers

Information TechnologyView LinkedIn profile

About Sai Kumar

Experienced Full Stack Developer with 12+ years of hands-on expertise building scalable, high-performance applications across finance, telecom, automobile, and e-commerce domains. Proficient in both front-end and back-end technologies, with a strong grasp of modern frameworks, databases, APIs, and cloud platforms. Known for writing clean, efficient code and delivering end-to-end solutions that drive business value. Adept at collaborating with cross-functional teams, adapting to fast-paced environments, and continuously learning new technologies. Open to opportunities across industries where I can contribute to impactful, innovative development projects.

Experience

Full Stack Engineer
Walmart
Apr 2025 — Present · Sunnyvale, CA, US
Designed and operated cloud-native platforms on AWS supporting data-intensive and ML-driven workloads at scale.• Built Go and Python microservices enabling ML inference and retraining workflows, optimized for performance and cost efficiency.• Developed Apache Airflow DAGs orchestrating model retraining, evaluation, and deployment pipelines.• Integrated Kafka-based event streaming to support real-time data ingestion for downstream analytics and ML use cases.

Contact information

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Current company

Razorpay

4K employees · Bangalore, Karnataka, India

Power your finance, grow your business. Razorpay is India’s first full-stack financial solutions company. We are on a mission to enhance the payment experience of over 300 million end consumers. And in doing so, we aim to enable Indian businesses - big and small - accept payments digitally with minimal effort and maximum ease. Razorpay has grown from being a payment gateway provider to a solutions-driven organization boasting of an extensive products suite to accept and disburse payments as well as raise capital and park money. In a nutshell, we fit into every nook and corner where your business touches money. #OutgrowOrdinary We identify ourselves as disruptors in the digital payments space and our vision is to power the financial ecosystem for other disruptors. Like attracts like and Razorpay actively looks to partner with established companies and startups that have either broken the glass ceiling in their industry or are set to. The Razorpay Product Suite today comprises verticals, along with Payment Gateway, like Payment Links, Payment Pages, Subscriptions, Smart Collect, Route, Razorpay Capital, RazorpayX, Payroll and Thirdwatch. Razorpay was started in 2014 by two IIT Roorkee alumni, Harshil Mathur and Shashank Kumar. Just a short few years later, Razorpay has evolved into a 800-odd strong organization with some of the best talents in the country helping some of the best companies manage their money movement seamlessly. Certified cool We are a bunch of spirited, ambitious and fun folks. And no, we’re not saying this ourselves--leading institutions have recognized Razorpay for the high trust and high-performance culture that we maintain. Our strength lies in the people we are and we go to great lengths to nurture a family of coders, designers, sellers, marketers, analysts, writers, runners, photographers, gamers, tinkerers, and above all, people who are dreamers and doers at the same time. Be a part of our exciting journey.

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About Sai Kumar

Experience

Full Stack Engineer

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