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Ethereum Developer Course in Amsterdam - June

The course takes place at B Startup School in Amsterdam. For the duration of the 4 days two of B9lab's instructors will be on site to guide you through understanding Ethereum and building a decentralised application prototype.

There is a whole lot of hype around Blockchain. But how does it work? What is a smart contract? Why is everyone so excited about DAOs? And what does all of this have to do with cryptocurrencies?

And most importantly, how do you program for a blockchain network?

About This Course

This course teaches software engineers the basics of blockchain technology as well as languages and tools required to build decentralised applications on the Ethereum platform. It is aimed at experienced programmers, introducing everything needed to understand the technology, write smart contracts and build applications that interact with them.

Participants will learn about the Ethereum platform, the programming language Solidity, how to use web3 and the Truffle framework and lastly, how to tie everything together. Step by step, participants build a fully functioning decentralised application, deploy it and test it.


After the 4-day workshop you will have the opportunity to go through the B9lab certification exam. B9lab awards certificates to participants who show very strong ability and understanding. The pass mark is fairly high and requires an average of 80% or more. Successful participants receive a certificate that is verified on the Ethereum blockchain.

Exam and Timeline

At the end of the 4-day workshop, participants have 2 weeks to submit their final project if they choose to attempt the certification route.


You will need a computer with at least 8 GB of RAM and 50 GB of free hard-disk space. The course is designed to be operating system agnostic to you can use recent versions of any Linux distribution, OSX or Windows. You may get away with just 4GB of RAM if your computer is running Ubuntu.

  • 1 year of active development experience with an object-oriented programming language
  • Experience with JavaScript,HTML, CSS, git and Linux.


The workshop runs over 4 days. Each day is 8 hours long and includes a lunch break.

Course Syllabus

Blockchain Foundation

The course covers the very basics of blockchain technology, from data structures to live projects. Serves as both a reminder for participants who know the basics and a clear introduction for those who don't.

  • What is a blockchain?
  • What are transactions and blocks?
  • How do P2P systems operate?
  • The most prominent consensus mechanisms
  • Difference between private, consortium, and public networks
  • What does the data structure look like?
  • How do Smart Contracts work?
  • What is the Ethereum Virtual Machine?
  • What is a Hash?
  • How do public/private keys work?
  • What is a Merkle tree?
  • What is the double-spend problem?

Ethereum Basics

The window into any blockchain network is the node. This course teaches students how to run a node and how to install, configure and use the most common Ethereum clients.

  • The Ethereum ecosystem, DApps and DAOs
  • What is Mist and how does it work?
  • What is Ether, an account, a Faucet?
  • Compile, deploy and instantiate contracts
  • Configuring, running and working with the go-ethereum client
  • Account management and mining
  • Understand the different stages of a contract deployment
  • How to interact with a contract once deployed?
  • What does the setup process for a private network look like?


The most prominent language used for the development of smart contracts is Solidity. The course covers all aspects from value types and inheritance to more exotic features and optimisation.

  • Contract classes, Functions and conditionals
  • Inheritance & abstract contracts
  • Libraries
  • Types & Optimisation
  • Global Variables
  • Debugging

Web3 & Truffle

The toolkit to aid development of decentralised applications is growing. This course introduces the two most currently relevant and covers everything from installation and setup to custom configuration and scripting.

  • Building an interface to interact with a smart contract
  • Setting up event-driven interfaces
  • Adapting Truffle’s default behaviour
  • Write functional tests for smart contracts
  • How to manually test contract functionality?
  • Instantiate web3 and communicate with a contract from an HTML page
  • Use client side signing and remote nodes for light DApps
  • How does web3 and truffle work with Angular.js?

Project Work

This course will guide you through the development of a sophisticated decentralised marketplace, including a smart contract backend system and a full frontend.

Your course team

Elias Haase

Elias has been spending the past 10 years planning, building and running applications. His background is in Artificial Intelligence. Since the early days of bitcoin he has been following the progress of blockchain tech and has been gathering experience with smart contracts / trustless computation since late 2014.

Course Staff Image #2

Ibo Sy

Ibo is a software engineer and entrepreneur with extensive experience in native desktop, web and mobile application development. He has worked on 3D Virtual and Augmented Reality projects and has a knack for embedded systems. He has been delivering software projects for 10 years.