Fullstack DApp 2025: Solidity, React & Ethereum Blockchain from Udemy

In this comprehensive course, you will learn to build a full-stack Web 3.0 application from scratch. We’ll begin by creating a Solidity smart contract, the leading language for Ethereum and EVM-compatible blockchains. You will then compile and deploy this contract on a local node using Hardhat, a powerful development framework for Ethereum.

Next, we’ll dive into Layer 2 (L2) solutions, exploring how to deploy smart contracts on zkSync, a cutting-edge technology that enhances scalability and reduces transaction costs on Ethereum.

You’ll also learn how to integrate decentralized storage with IPFS (InterPlanetary File System), using Piñata as the IPFS provider to store your data in a decentralized manner.

Furthermore, we will cover the integration of blockchain oracles with Chainlink, enabling your smart contracts to fetch real-time data, such as price feeds, directly from the outside world.

By the end of this course, you will have a solid understanding of building, deploying, and integrating full-stack Web 3.0 applications. This includes setting up a local environment and deploying to a live blockchain. Whether you're a beginner or an intermediate developer, this course will equip you with the essential skills to build scalable and robust blockchain applications.

In addition, you will learn to develop the frontend with React, creating a seamless user interface for your Web 3.0 application. We will also integrate a funding feature on top of the polling functionality, allowing you to understand and implement funding mechanisms within blockchain apps.

What's inside

Learning objectives

Learn to create full stack web 3.0 dapp with hardhat and react.
Learn to integrate the web 3.0 dapp with ipfs storage to store images.

Learn to integrate the web 3.0 dapp with l2 networks.
Learn to integrate the web 3.0 dapp with blockchain oracles.

Learn to create full stack web 3.0 dapp with hardhat and react.
Learn to integrate the web 3.0 dapp with ipfs storage to store images.
Learn to integrate the web 3.0 dapp with l2 networks.
Learn to integrate the web 3.0 dapp with blockchain oracles.

Syllabus

Introduction

Web 3.0 Dapp will are building

Technical Stack we are learning via Dapp

Course includes section on Solidity

Traffic lights

Read about what's good

what should give you pause

and possible dealbreakers

Covers zkSync, which enhances scalability and reduces transaction costs on Ethereum, making it relevant for developers focused on efficient blockchain solutions

Integrates Chainlink, enabling smart contracts to fetch real-time data, such as price feeds, directly from the outside world, a crucial feature for dynamic DApps

Uses Hardhat, a powerful development framework for Ethereum, which is widely adopted in the blockchain development community

Employs Solidity, the leading language for Ethereum and EVM-compatible blockchains, ensuring relevance in the current Web3 landscape

Integrates decentralized storage with IPFS using Piñata, which is essential for building truly decentralized applications

Requires familiarity with React for frontend development, which may necessitate additional learning for those without prior experience in this framework

Reviews summary

Comprehensive fullstack dapp development course

According to learners, this course provides a largely positive (positive) and comprehensive (positive) journey into full-stack Web 3.0 development. Students highlight the practical projects (positive) and hands-on coding (positive) as major strengths, enabling them to build functional DApps from scratch. The curriculum is praised for its broad coverage (positive), including Solidity, React, Layer 2 solutions like zkSync, IPFS storage with Piñata, and Chainlink oracles. While some noted the pace can be fast (neutral), the course is generally considered well-structured (positive) and the instructor's explanations are often described as clear and concise (positive), simplifying complex blockchain concepts. Recent reviews indicate the content remains largely relevant (positive) in a rapidly evolving field.

Course moves quickly; some prior knowledge helps.

"The pace is quite fast, so having some prior programming or JavaScript knowledge definitely makes it easier."

"It covers a lot quickly; be prepared to pause and practice if you're new to some concepts."

"While it says beginner to intermediate, I think a basic understanding of coding helps keep up."

Material is generally up-to-date with current tech.

"Given how fast Web3 moves, I was impressed that the content felt current and used relevant tools like Hardhat and zkSync."

"The course seems to stay relevant, covering important recent developments like Layer 2 networks."

"It feels like the course is being maintained to reflect the changing landscape, which is great."

Instructor simplifies complex topics effectively.

"The instructor has a knack for breaking down difficult blockchain concepts into understandable parts."

"Explanations were clear and straight to the point, which is crucial in this complex domain."

"I found the lectures easy to follow, even when tackling advanced topics like L2s."

Covers a wide array of essential Web 3.0 topics.

"The course covers so much! Solidity, React, L2s, IPFS, Oracles - it's a full spectrum view."

"I learned how to integrate decentralized storage with IPFS and fetch real-time data using Chainlink, which is super useful."

"It really gives you a full-stack perspective, connecting the smart contract backend with a React frontend."

Focus on building real-world, functional DApps.

"The hands-on coding and projects are the strongest part of the course for me, making the concepts tangible."

"Building a real DApp end-to-end solidified my understanding much better than theory alone."

"I appreciated the emphasis on practical application; it’s not just lectures, but actual building."

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Fullstack DApp 2025: Solidity, React & Ethereum Blockchain with these activities:

Review Solidity Fundamentals

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Solidify your understanding of Solidity syntax, data types, and control structures to prepare for writing smart contracts in the course.

Browse courses on Solidity

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Review Solidity documentation.
Complete online Solidity tutorials.
Write and test simple smart contracts.

Review 'Mastering Ethereum'

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Gain a deeper understanding of Ethereum's architecture and smart contract principles to enhance your ability to build DApps.

View Mastering Ethereum on Amazon

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Read the chapters on smart contracts and Ethereum Virtual Machine.
Experiment with the code examples provided in the book.

Simple Token Contract

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Practice writing and deploying a basic ERC-20 token contract to gain hands-on experience with Solidity and smart contract deployment.

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Define the token's properties (name, symbol, decimals, total supply).
Implement the standard ERC-20 functions (transfer, balanceOf, etc.).
Deploy the contract to a test network using Hardhat.
Test the token's functionality using a wallet or web interface.

Four other activities

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Blog Post: L2 Scaling Solutions

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Research and write a blog post explaining Layer 2 scaling solutions like zkSync, reinforcing your understanding of their benefits and implementation.

Show steps

Research different L2 scaling solutions (zkSync, Optimism, Arbitrum).
Explain how L2 solutions improve scalability and reduce transaction costs.
Provide examples of projects using L2 solutions.
Publish the blog post on a platform like Medium or Hashnode.

Chainlink Integration Tutorial

Show steps

Follow a Chainlink tutorial to learn how to integrate external data feeds into your smart contracts, enhancing their functionality and real-world applicability.

Show steps

Find a Chainlink tutorial that covers price feeds or other relevant data.
Set up your development environment according to the tutorial's instructions.
Implement the Chainlink integration code in your smart contract.
Test the integration to ensure data is being fetched correctly.

DApp Frontend with React

Show steps

Build a React frontend for your DApp to provide a user-friendly interface for interacting with your smart contracts.

Show steps

Set up a React project using Create React App or a similar tool.
Connect your React app to your smart contract using Web3.js or Ethers.js.
Design and implement the UI components for interacting with the contract's functions.
Test the frontend to ensure it correctly interacts with the smart contract.

Review 'The Internet of Money'

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Understand the broader context and philosophy behind blockchain technology to better appreciate the potential of DApps.

View The Internet of Money: A collection of talks by... on Amazon

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Read the essays on the societal impact of Bitcoin and blockchain.
Reflect on how these concepts apply to DApp development.

Career center

Learners who complete Fullstack DApp 2025: Solidity, React & Ethereum Blockchain will develop knowledge and skills that may be useful to these careers:

Blockchain Developer

A Blockchain Developer designs, develops, and implements blockchain-based solutions. This role involves creating decentralized applications and smart contracts. This course helps build a strong foundation in Solidity, the leading smart contract language, along with the ability to compile and deploy contracts using Hardhat. Furthermore, the course covers integrating decentralized storage with IPFS and Chainlink oracles, essential for any proficient Blockchain Developer.

See salaries and explore the career path for Blockchain Developer

Decentralized Application Developer

A Decentralized Application Developer focuses on building and deploying applications that operate on blockchain networks. These applications, also known as DApps, leverage the transparency and security of blockchain technology. This course provides the necessary skills, including creating full-stack Web 3.0 applications with Hardhat and React, integrating with IPFS for decentralized storage, and deploying to Layer 2 networks. A Decentralized Application Developer will find great value in the comprehensive approach of this course, particularly the focus on practical application development.

See salaries and explore the career path for Decentralized Application Developer

Smart Contract Developer

A Smart Contract Developer specializes in writing and deploying smart contracts, which are self-executing agreements stored on a blockchain. Proficiency in Solidity is crucial for this role. This course offers comprehensive training in Solidity, covering everything from basic syntax to advanced concepts like inheritance and abstraction. The course also covers deploying smart contracts on local nodes and Layer 2 solutions, which is something a Smart Contract Developer should be able to do.

See salaries and explore the career path for Smart Contract Developer

Web 3.0 Developer

A Web 3.0 Developer builds applications for the decentralized web, leveraging blockchain technology and related tools. This role requires skills in both frontend and backend development, along with a deep understanding of blockchain concepts. This course offers a complete learning experience, from creating Solidity smart contracts to developing a React frontend and integrating with decentralized storage and oracles. This course is essential for anyone looking to become a successful Web 3.0 Developer.

See salaries and explore the career path for Web 3.0 Developer

Solidity Engineer

A Solidity Engineer specializes in developing smart contracts using the Solidity programming language. Solidity Engineers are deeply involved in the design, implementation, and testing of blockchain-based systems. This course helps you learn Solidity through hands-on projects and provides a detailed exploration of smart contract structure, data types, and advanced concepts like composition and inheritance. This course is tailor-made for aspiring Solidity Engineer.

See salaries and explore the career path for Solidity Engineer

Blockchain Architect

A Blockchain Architect designs and implements blockchain solutions for various business needs. This often requires a deep understanding of blockchain technology, smart contract development, and system integration. The course will benefit any blockchain architect by providing practical experience in building full-stack Web 3.0 applications and deploying them on different networks. The course will equip a Blockchain Architect with the implementation skills needed to complement their design expertise.

See salaries and explore the career path for Blockchain Architect

Cryptocurrency Engineer

A Cryptocurrency Engineer focuses on the development and maintenance of cryptocurrency systems and infrastructure. This role requires a strong understanding of blockchain technology, cryptography, and distributed systems. Cryptocurrency Engineers require knowledge that will be found in this course, such as how to build full-stack Web 3.0 applications, integrate with Layer 2 networks, and implement funding mechanisms within blockchain apps.

See salaries and explore the career path for Cryptocurrency Engineer

Decentralized Finance Developer

A Decentralized Finance Developer builds applications and protocols for decentralized financial systems, often called DeFi. These systems aim to provide financial services like lending, borrowing, and trading without intermediaries. This course will benefit a Decentralized Finance Developer by teaching how to write smart contracts with Solidity, integrate blockchain oracles with Chainlink, and implement funding features within blockchain applications. The decentralized storage integration can also be relevant for certain DeFi applications.

See salaries and explore the career path for Decentralized Finance Developer

Smart Contract Auditor

A Smart Contract Auditor reviews smart contract code for security vulnerabilities, bugs, and inefficiencies. This role requires a deep understanding of Solidity and common attack vectors in blockchain applications. This course provides a solid understanding of smart contract development, so a Smart Contract Auditor can identify potential problems within the code. The course's hands-on approach to building and deploying smart contracts will be particularly valuable.

See salaries and explore the career path for Smart Contract Auditor

Web Application Developer

A Web Application Developer designs, develops, and maintains web applications. While traditionally associated with centralized systems, web application developers are increasingly involved in building Web 3.0 applications with blockchain integration. This course provides the necessary skills to transition into this space, including React frontend development, Solidity smart contract development, and integration with decentralized storage and oracles. Web Application Developer will expand their skill set to include blockchain technologies.

See salaries and explore the career path for Web Application Developer

Software Engineer

A Software Engineer designs, develops, and tests software applications. With the rise of blockchain technology, Software Engineers are increasingly sought after to build decentralized solutions. This course helps Software Engineer learn the fundamentals of blockchain development, including Solidity smart contracts, React frontends, and integration with IPFS and Chainlink. This course will find it especially helpful for understanding the unique challenges and opportunities of blockchain development.

See salaries and explore the career path for Software Engineer

Integration Engineer

An Integration Engineer specializes in connecting different software systems and ensuring they work together seamlessly. In the context of blockchain, this often involves integrating blockchain solutions with existing enterprise systems. This course may be useful to an Integration Engineer by providing the skills to integrate blockchain oracles with Chainlink. Integration Engineer will find the course's focus on practical application development particularly beneficial.

See salaries and explore the career path for Integration Engineer

Technical Project Manager

A Technical Project Manager oversees the planning, execution, and delivery of technical projects. Understanding the technical aspects of a project is crucial for effective management. This course may benefit a Technical Project Manager by providing a high-level understanding of blockchain technology and its applications. The course's focus on full-stack Web 3.0 development will provide valuable insights into the complexities of blockchain projects.

See salaries and explore the career path for Technical Project Manager

Business Analyst

A Business Analyst analyzes business needs and translates them into technical requirements. As blockchain technology becomes more prevalent, Business Analysts need to understand its capabilities and limitations. This course may be useful to a Business Analyst by providing a foundation in blockchain technology and its applications. The course's focus on building full-stack Web 3.0 applications will provide Business Analyst with a practical understanding of the technology.

See salaries and explore the career path for Business Analyst

Quality Assurance Engineer

A Quality Assurance Engineer tests software applications to ensure they meet quality standards. Because blockchain applications require a high level of security and reliability, Quality Assurance Engineers are in high demand. This course may be helpful to a Quality Assurance Engineer by providing an overview of blockchain technology and its unique testing challenges. The course's focus on smart contract development will give Quality Assurance Engineer a foundation for testing these critical application components.

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Fullstack DApp 2025

Solidity, React & Ethereum Blockchain

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What's inside

Learning objectives

Syllabus

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Reviews summary

Comprehensive fullstack dapp development course

Activities

Career center

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