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AI Engineering Bootcamp: Building AI Applications (LangChain, LLM APIs + more)

Learn to build AI applications using LLM APIs and cutting edge tools including LangChain, LangSmith, and LangGraph. This is developer training for the new era of programming.

25 Days

Average time students take to complete this course.

Last updated: August 2025

Rated 4.9 out of 5 on Trustpilot

What you'll learn

  • Use OpenAI & Gemini APIs to build real-world AI applications
  • Craft effective prompts using proven engineering techniques
  • Build chatbots, voice apps, and image generation tools
  • Use LangChain to create agents that use memory and tools
  • Work with embeddings & RAG for smarter search and Q&A
  • Build multi-step agents with LangGraph and LangSmith
  • Analyze, debug, and improve LLM-powered apps
  • Build a full-featured AI Research Assistant from scratch

This course is your hands-on path to becoming a Generative AI engineer...someone who doesn’t just use AI, but builds with it.

You’ll start by leveling up your Python skills, mastering how to structure modular code, handle APIs, and manipulate data. Then, you’ll dive deep into the world of large language models (LLMs)—how they work, how they’re trained, and how to talk to them effectively through advanced prompt engineering.

From there, it’s all about application. You’ll learn how to build real-world AI-powered apps using the OpenAI and Gemini APIs—working with chat, image, and audio features. You’ll go even further by learning frameworks like LangChain for chaining prompts and building agents, and LangGraph for orchestrating stateful, multi-step workflows. You’ll give your apps memory using embeddings and vector databases, and learn to debug and scale production-ready systems with LangSmith.

And it’s not just theory. Throughout the course, you’ll build chatbots, intelligent image tools, search-driven Q&A systems, and more. The final capstone brings everything together as you build a research agent that uses retrieval, tools, and reasoning to generate high-quality summaries of real-world data.

This is how you go from experimenting with AI… to engineering it.

What Else Should I Know?

By becoming a ZTM member you'll not only get access to all our bootcamp courses, bytes, and projects.

But you’ll also get to join our exclusive live online community classroom to learn alongside thousands of students, alumni, mentors, TAs and Instructors.

Most importantly, you'll be learning from an industry professional (Andrei) that has actual real-world experience with AI Engineering. He teaches you the exact strategies and techniques he uses in his role.

Finally, as with all ZTM courses, this course is a living thing. It will be constantly updated as the landscape changes so you can use it as your go-to guide for building smarter AI applications using RAG both now and throughout your career.

Join 1,000s of Zero To Mastery graduates that have gotten hired and are now working at companies like Google, Tesla, Amazon, Apple, IBM, JP Morgan, Facebook, Shopify + other top tech companies.

They come from all different backgrounds, ages, and experiences. Many even started as complete beginners.

So there's no reason it can't be you too.

And you have nothing to lose. Because you can start learning right now and if this course isn't everything you expected, we'll refund you 100% within 30 days. No hassles and no questions asked.

When's the best time to get started? Today!

There's never a bad time to learn in-demand skills. But the sooner, the better. So start learning to build Generative AI applications today by joining the ZTM Academy. You'll have a clear roadmap to developing the skills to build your own projects, get hired, and advance your career.

Join Zero To Mastery Now

What you'll build

The best way to learn about AI is to actually build AI applications. Not just watch endless tutorials. That's why a key part of this course is the real-world projects that you'll build. Plus they'll look great on your portfolio.

Build a Conversational AI Agent with Gemini API

Build a Conversational AI Agent with Gemini API

Create a chat-based AI assistant using Google’s Gemini API. Learn how to handle conversations, stream responses, and build a responsive, real-world chatbot interface.

Build a Healthy Daily Meal Planner with OpenAI API

Build a Healthy Daily Meal Planner with OpenAI API

Use the OpenAI API and DALL·E to generate a full day of healthy meals, complete with recipes and original images. Learn prompt design and multi-modal AI workflows.

Build a Q&A App for Private Documents using RAG and LangChain

Build a Q&A App for Private Documents using RAG and LangChain

Build a smart Q&A system that answers questions from your own private documents using LangChain, embeddings, and vector databases for powerful, retrieval-based reasoning.

Build an AI Essay Writer and Reviser using LangGraph

Build an AI Essay Writer and Reviser using LangGraph

Design an AI essay writer that reflects, revises, and improves its drafts. Learn how to build iterative, agentic workflows with LangGraph and custom logic.

Build a Master Research Agent with LangGraph, GPT-4o, RAG, Pinecone, ArXiv, and Google SerpAPI

Build a Master Research Agent with LangGraph, GPT-4o, RAG, Pinecone, ArXiv, and Google SerpAPI

Build a full-stack research assistant that finds, summarizes, and structures insights from ArXiv and the web—powered by GPT-4o, LangGraph, RAG, and real-time tools.

+ 4 more exciting projects to practice your new skills

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Course curriculum

To make sure this course is a good fit for you, you can start building AI applications for free right now by clicking any of the PREVIEW links below.

Section 00 - Introduction

6 lectures

AI Engineering Bootcamp: Building AI Applications2:01

PREVIEW

Exercise: Meet Your Classmates and Instructor

PREVIEW

ZTM Plugin + Understanding Your Video Player

PREVIEW

A Note on Course Prerequisites

PREVIEW

Course Resources

PREVIEW

Set Your Learning Streak Goal

PREVIEW

Section 01 - Virtual Environments in Jupyter Notebook

2 lectures

Section 02 - Essential Python Libraries for AI: Requests & Pandas

17 lectures

Section 03 - Introduction to LLMs, APIs, and AI Libraries

7 lectures

Section 04 - Deep Dive into LLMs

10 lectures

Section 05 - Diving into OpenAI API with Python

17 lectures

Section 06 - Prompt Engineering for Generative AI

10 lectures

Section 07 - OpenAI API Project: Building a Healthy Daily Meal Plan

6 lectures

Section 08 - Diving into Google’s Gemini API

12 lectures

Section 09 - Gemini API Project: Talking With an Image

7 lectures

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Meet your instructor

Your instructor (Andrei) isn't just an expert with years of real-world professional experience. He has been in your shoes. He makes learning fun. He makes complex topics feel simple. He will motivate you. He will push you. And he will go above and beyond to help you succeed.

Andrei Dumitrescu

Hi, I'm Andrei Dumitrescu!

Andrei is a Senior Network & Software Engineer with 15+ years of experience and over 50,000+ students have taken at least one of his top-rated courses.

SEE MY BIO & COURSES

Andrei Dumitrescu

DevOps Engineer

Frequently asked questions

Are there any prerequisites for this course?

  • Basic Python knowledge is required. Don't have that? You can start learning today by taking our Python Bootcamp course!

Who is this course for?

  • Anyone who wants a step-by-step guide to learning to build AI applications and be able to get hired as an AI Developer or AI Engineer
  • Anyone who wants to launch or accelerate their career in AI
  • Students, Developers, Machine Learning Engineers, Data Scientists, AI Developers, and AI Engineers who want to demonstrate practical, professional-level skills by actually building real AI applications
  • Anyone looking to expand their knowledge and toolkit when it comes to AI
  • You're still confused and stuck after taking online AI application development tutorials
  • You're frustrated with your progress with all of the beginner AI software courses out there that don't go beyond the basics and don't give you real-world practice or skills you need to actually get hired

Do you provide a certificate of completion?

We definitely do and they are quite nice. You will also be able to add Zero To Mastery Academy to the education section of your LinkedIn profile as well.

Are there subtitles?

Yes! We have high quality subtitles in 6 different languages: English, Spanish, French, German, Arabic, and Hindi.

You can even adjust the text size, color, background and more so that the subtitles are perfect just for you!

Still have more questions about the Academy?

Still have more questions specific to the Academy membership? No problem, we answer some more here.

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