How to Become a Blockchain Developer : Skills | Roles & Responsibilities

Become a Blockchain Developer?

Nowadays Blockchain is one of the most emerging technology. Apart from that being the revolutionary technology in the present market. The information in its publicly available for everyone and each of the blocks of data is highly secured with multiple chains.

The Basic concepts of Blockchain are creating digital identities, tracking everything and monitoring supply chains. According to one of the social networking site (LinkedIn), Blockchain development is one of the most emerging jobs of 2018.

Blockchain developers are basically two types of developers:

1. Core Blockchain developers – To design architecture of Blockchain

2. Blockchain developers – Use the architecture and create applications

For both of the developers, we need some basic knowledge and became Blockchain developers.

Below skills are you should learn to become a Blockchain developer with simple concepts:

1. Data Structures:

This is a very basic concept to learn Blockchain. To the understanding of solid data structures concepts with algorithms because of Blockchain is quite complex to understanding and developing. Blocks are even secured and strong by Cryptographic techniques we need to Data structure concepts.

Mostly preferable concepts in Data structures are like LinkedList, binary trees, Mapping techniques, and graphs. As well as an upgrade one of best programming languages is Java, Python, C, and C++.


After completion of Data Structures, concepts will go with Cryptography for public key encryption and decryption for digital signatures.  Basic knowledge of RSA and ECDSA concepts with solid knowledge of Mathematics.


Blockchain developers need an idea on Networking concepts like peer to peer networks, routing, configurations, and topologies for a chain mechanism. For communication exchange information need to learn OSI model and Protocols is enough for Blockchain developing.

4.Distributes Systems:

The distributed system is an autonomous computer that is connected using the distribution environment for sharing resource data within a single network. It is for reliability and transparency in blockchain mechanism.

5.Smart Contracts:

Last but not least smart contracts are a major role in Blockchain developing. It is a program that runs on the blockchain once the transaction is done. Smart Contracts are unbiasedly enforced to increase blockchain capabilities.

Summary: Blockchain developers Roles and Responsibilities are to developing coding in C/C++ or any other programming language including web development with Cryptography and strong knowledge on Maths for tracing chains.

Blockchain Evaluation

Blockchain is a distributed database that maintains a continuously growing list of records called blocks secured from adaptation. Blockchain was first coined by Satoshi Nakamoto in 2008 in his paper about Cryptocurrency.

Blockchain Versions: 1.0 to 4.0

Blockchain 1.0

Satoshi Nakamoto is first paper discussed only about Blockchain’s application in Cryptocurrency and he created Bitcoin in 03 Jan 2009.  Implementation of distributed ledger technology (DLT) to cryptocurrencies.

Example: Bitcoin

Blockchain 2.0 :

I)Blockchain 2.0 is data protection solution based version

II)Smart Contracts are small computer programs that “live” in the blockchain. It offers making it impossible to hack Smart Contracts.

II)Innovating in normal market and Legislation.

Examples : Banking & Payments and Smart Contracts.


Banking and Payments      Smart Contracts

Blockchain 3.0:

I) DWApp is an abbreviated form for Decentralized Web Application avoiding centralized infrastructure. DWApp simply means that fronted and contracts

II)Develop the application of Blockchain in all domains like Telecom, Retail etc.

Examples :

Retail, Telecom, IoT, Healthcare Insurance and Manufacturing domains


Blockchain 4.0

Compare with Blockchain versions 4.0 is highly improvement through Artificial Intelligence technology, machine learning and autonomously placing an order for replacement parts to arrive. In this version especially Industry demands.

Blockchain what and how

Cryptocurrency is the most buzzing word these days, you might have heard about blockchain around bitcoins. However, cryptocurrency and blockchain are two different things. Blockchain concept was initially presented by an unknown named Satoshi Nakamoto in 2008, whereas bitcoin was introduced in 2009. Basically, bitcoin uses the blockchain mechanism. Blockchain is not completely about bitcoin, there is more to it.

This article will provide information on what and how blockchain works.

What is Blockchain?

Blockchain is a robust, transparent, public ledger.

For instance, let us consider a banking scenario. Present for any online transactions we use banking service because they are the most trusted third parties. Two users, Allen and Mark would like to do a transaction. Allen transfers some amount to Mark using traditional banking service. Bank transfers the amount successfully, taking some amount as transaction charge and a time of an hour or so. Using blockchain mechanism users can do the same transaction much hasslefree, with cheap transaction charge and in a matter of seconds.

Blockchain works on distributed and public ledgers. In the above case whenever a transaction is made a new block is appended to the blockchain and it gets shared to each node verifies the genuineness of the block, after successful authentication each node would append this block to their blockchain.

Blockchain ensures complete security because it is decentralized and there is no central hub where all the transaction data is stored. The entire network has all the details of the transaction ensuring security.

How does Blockchain work?

Basically, each block contains some data as well as the link address to previous block and the next block. The chain is nothing but the link between blocks.

Block contains three elements.

1. Data

Data stored in the block depends on the application, In the above case as we are using the blockchain mechanism for transactions, each block stores transaction information.

2. Hash

Block also has hash. Hash is a unique identifier to block and its content. Once a block is created its hash is being calculated.

3. Hash of the previous block

Block contains hash nothing but a link to a previous block. This creates a chain of robust and secured blocks.


hashing prevents tampering but that’s not enough to keep the block secured so it uses an additional mechanism called Proof-of-work. In the case of bitcoin, It takes about 10 min to calculate proof-of-work and append a new block.

The proof-of-work mechanism makes it hard to tamper because if we tamper one block we still need to recalculate the proof of work for all blocks.

Applications of blockchain