Sankar Bahunadam

Full Stack & AI Engineer | Azure & AWS Specialist | LLMs, LangChain, RAG Systems | Spring Boot, React, FastAPI • RAG/LangChain • Kafka/Redis • CI/CD & Terraform

Role: Full-stack Developer at American Express
Location: Dallas, TX, US
LinkedIn followers: 500 followers

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About Sankar Bahunadam

Full-Stack Java & AI Engineer with 5 + years of experience delivering high-performance…

Experience

Full-stack Developer
American Express
Feb 2025 — Present · Phoenix, AZ, US
Designed and developed React.js + TypeScript + FastAPI analytics dashboards, reducing R&D report generation time from 72 hours to less than 8 hours.Integrated LangChain, LlamaIndex, and RAG architecture into research tools, cutting document search times from 45 minutes to under 1 second with 92% relevance accuracy.Built and deployed Flask microservices on Azure Kubernetes Service (AKS) with Terraform-managed infrastructure, enabling zero-downtime rolling updates and independent scaling of services.Automated ingestion and indexing of 50K+ research documents via Azure Functions + n8n, saving 15+ hours/month in manual uploads.Collaborated with data engineers to implement Azure Data Factory pipelines for automated data refresh, improving dataset update frequency from weekly to daily.Configured GitHub Actions CI/CD pipelines for automated build, testing, and deployment to Azure environments, accelerating delivery cycles.

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Current company

American Express

Financial Services · 10K employees · World Financial Center, 200 Vesey Street, New York, NY, 10285, US

At American Express, we know that with the right backing, people and businesses have the power to progress in incredible ways. Whether we’re supporting our customers’ financial confidence to move ahead, taking commerce to new heights, or encouraging people to explore the world, our colleagues are constantly striving to uphold our powerful backing promise to our customers and each other every day. These beliefs have been our North Star for 170 years as our business transformed – from helping evacuate travelers during World Wars, to ensuring the safety of our customers’ funds during the Great Depression in the U.S., to creating the Shop Small® movement to help small businesses recover from the Financial Crisis, to providing aid to communities impacted by many natural disasters and so much more. For generations, the key to our success has been the determination and resilience of our American Express colleagues. Now, as a globally integrated payments company, we work together to provide customers with access to products, insights and world-class experiences that enrich lives and build business success. Join us and let’s lead the way together. Learn more about us at: https://www.americanexpress.com/careers https://www.americanexpress.com/ https://www.facebook.com/AmericanExpressUS https://www.instagram.com/americanexpress/ https://twitter.com/americanexpress https://www.youtube.com/user/AmericanExpress See our community guidelines at: https://www.americanexpress.com/en-us/company/community-guidelines/ If you have a customer service issue or question, please visit www.americanexpress.com/contactus

americanexpress.com

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About Sankar Bahunadam

Experience

Full-stack Developer

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