Christian Nwamba

Chris Nwamba is a Senior Developer Advocate at AWS focusing on AWS Amplify. He is also a teacher with years of experience building products and communities.

AI Web
How to Build a NestJS AI Chatbot with Google Gemini

In this post, we will build a real-time FAQ chatbot for a tax management SaaS using Gemini 2.5 Flash and NestJS with Server-Sent Events (SSE) to stream replies to the user. You'll learn how to set up Gemini and understand how context caching works.

by Christian Nwamba
March 06, 2026 10 min read Share
Web React
An Introduction to TanStack DB: A Reactive Data Layer for Modern Web Applications

In this article, we will build a to-do app to see TanStack DB in action. We’ll cover how to set up collections, what “live queries” are, and why “differential dataflow” makes it so fast. We'll also cover when to use TanStack DB and when TanStack Query alone is enough.

by Christian Nwamba
March 03, 2026 17 min read Share
Web
How to Build a NestJS API for Full-Text Search with OpenSearch

OpenSearch is an open-source search library that simplifies analysis of large volumes of data and result tuning. See how to create a NestJS API with this full-text search capability.

by Christian Nwamba
February 16, 2026 13 min read Share
Web Angular
Image Optimization in Angular Applications

In this guide, we will see how to use Angular’s NgOptimizedImage directive to address some common image optimization concerns effortlessly.

by Christian Nwamba
February 10, 2026 14 min read Share
Web React
Automating Complex Workflow in Your Next.js Application with Inngest

We’ll build a simple loan application with Next.js and Inngest, plus go over the tools that were used to orchestrate complex workflows before Inngest.

by Christian Nwamba
December 18, 2025 9 min read Share