Hire Top Solidity developers

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Hire Solidity developers among the 20K+ engineers who have applied to UltraGenius

Rishabh

Solidity developer

Rishabh is a software engineer having 7+ years of experience designing various smart contracts for Ethereum. He possesses strong understanding of Blockchain.

Expert in

Blockchain

HTML

SQL

React

Experience

10 Years

Availability

Full Time

Mahesh

Solidity developer

Mahesh is a software engineer having 3+ years of experience designing various smart contracts for Ethereum. He possesses strong understanding of Blockchain and cloud-based applications.

Expert in

Cloud

Blockchain

CSS

HTML

Experience

10 Years

Availability

Full Time

John

Solidity developer

John is a software engineer having 10+ years of experience developing Blockchain applications using NodeJS and Blockchain. He has also worked on designing the smart contracts.

Expert in

NodeJS

Blockchain

CSS

HTML

Experience

10 Years

Availability

Full Time

Hire the best Solidity developers with UltraGenius

Solidity is a popular object-oriented programming language for implementing smart contracts on multiple blockchain platforms like Ethereum. Solidity language helps Solidity developers use self-implementing business logic in smart contracts which leaves a non-repeatable transactions record. Solidity provides support for creating contracts for crowdfunding, voting, multi-signature wallets, and auctions. 

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UltraGenius provides you only the best Solidity developers for hire

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Want to hire Solidity developers on your own? Here are the skills you must look for while hiring the best Solidity developers

Hiring Solidity developers might be an intricate task for you if you are a non-technical manager. Solidity is a popular object-oriented programming language for implementing smart contracts on multiple blockchain platforms like Ethereum. Solidity language helps Solidity developers use self-implementing business logic in smart contracts which leaves a non-repeatable transactions record. Solidity provides support for creating contracts for crowdfunding, voting, multi-signature wallets, and auctions. But, hiring the most skilled Solidity developers among thousands of developers is a challenging task for anyone. So, UltraGenius is here to assist you while recruiting the top talented Solidity developers on your own. UltraGenius understands your job requirements and gets you only the top developers who have in-depth knowledge of software development.

The following skills you must look for while hiring a Solidity developer – 

Familiarity with Brownie Framework

Brownie is one of the best frameworks of Python for writing smart contracts. Brownie comes with the technology that includes Python, Etherscan Plugin, Blockchain Forking, Vyper support, and Web3.js. Brownie automates the deployment of smart contracts onto the Blockchain and initializes or integrates the transactions if needed.

Knowledge of Ganache Software

Ganache is a personal software used for developing and deploying Ethereum and Corda applications. Smart Contracts are deployed using Ganache software. Set the “Environment” from Javascript Virtual Machine to Web3.js in the DEPLOY and RUN TRANSACTIONS panel and thus you connect your Metamask wallet to Mainnet and then click on DEPLOY.

After doing this, a transaction has to be signed with Metamask and you can deploy your smart contract.

Familiarity with Embark

Embark is a framework used for deploying smart contracts on Ethereum platform and enables Blockchain users to access them with traditional Javascript code. Embark provides easy development and deployment of Decentralized Applications (DApps) and integrates them with EVM blockchains, Decentralized Storages, and Decentralized communication platforms. Embark handles the migration of contracts and automatically deploys them again as per needs.

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Good grasping of NodeJS

NodeJS is a widely used run-time for writing server-side web applications with Javascript. Its fast asynchronous non-blocking I/O which handles multiple requests at the same time without blocking another request. Many Blockchain frameworks are built on NodeJS backend. The Solidity developers must be familiar with – Web3.js, ipfs-core, bitcoinsjs-lib, coingecko-api, truffle, CCXT, and ethers.js.

Expert in managing with Version Control Systems (VCS)

Hire Solidity developers must have a very good knowledge of version control systems like Git, TFS, SVN, and Mercurial. Mostly, developers use Git for their work- it helps keep track of the frequent changes that occur in code or to collaborate with others on a project. Along with this they need to know how to use commands like add, push, pull and commit which allow them to work independently on their code by branching off occasionally if desired.

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Experience with OpenZeppelin

Solidity developers must have knowledge and experience working with OpenZeppelin platform, which is used to create useful tools for smart contracts. Default tools are ERC20 and ERC21. OpenZeppelin also contains its upgradable contracts functionality which provides a Solidity developer the advantage of deploying a proxy contract and the developer can update the smart contract whenever the changes are needed.

Firm understanding of Object Oriented Programming

Object Oriented Programming has four pillars on which it stands – Encapsulation, Inheritance, Abstraction, and Polymorphism. Encapsulation protects the class variables from begin directly accessed and modified. The Solidity developers can use the getter() and setter() methods to access the data variables. Abstraction, on the other hand, provides only the essential details without showing the implementation details. Inheritance provides the advantage of code-reusability. Polymorphism provides the class to act differently upon invocation. Solidity is an object-oriented programming language so the Solidity developers must be strong in OOP concepts.

Familiarity with Hardhat

Hardhat is an Ethereum development platform for Solidity developers. Hardhat provides an integrated environment for performing tasks such as  interacting with a smart contract, automatically checking the mistakes in code, running test cases, etc.

Knowledge of Smart Contracts

Smart Contracts are collections of programs that automatically tend to execute, control , and document an agreement when pre-determined conditions are met, so that all participants can predict the outcome without involving any intermediary . The objective of smart contracts is to reduce the – 

  • Enforcement and arbitrations costs.
  • Need of trusted intermediators.
  • Malevolent and accidental exceptions.
  • Fraud losses.
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Knowledge of Ethers.js

Ethers.js is a lightweight general purpose  Javascript library used to interact with Ethereum Blockchain and easily design your applications’s front-end with its large collection of libraries. With the help of Ethers.js, the Solidity code becomes less buggy, well-designed, well-documented, and keeps users private keys secure and safe. 

Certified Enterprise Blockchain Professional (CEBP) certification

To become a Solidity developer, one must be proficient in Blockchain as smart contracts are implemented on Blockchain platforms. Certified Enterprise Blockchain Professional (CEBP) is a developer who has profound knowledge in Blockchain and can design excellent  Blockchain applications for businesses. The Blockchain certified professional can create Blockchain and cryptocurrencies extremely well and use the Blockchain knowledge in Artificial Intelligence and Internet of Things field. 

Knowledge of Metamask

Metamask provides Blockchain users the facility to handle accounts and their keys more securely by isolating them from the context of any site. This is the greatest advantage for the users to store their keys on a single central server. A transaction is initiated in Metamask by invoking the eth_sendTransaction method. It may be sending an ether, or may result in changing the state on the Blockchain in any number of ways, creating a smart contract, or sending tokens. 

Familiarity with Web3.js

Web3.js is a vast collection of libraries which provides Solidity developers to connect with a remote or local ethereum node using a IPC or HTTP connection. Web3.js can retrieve user accounts, interact with smart contracts, send transactions, and many more. The web3.js is installed in any Javascript project easily, and permits the project’s DApp to send and get information to and from a Blockchain database. 

Excellent knowledge of Truffle framework

Truffle is a very well-known Blockchain environment, testing framework, and an asset Blockchain pipeline that uses the Ethereum Virtual Machine (EVM). Truffle is designed and developed for the Solidity developers for deploying and testing their smart contracts written on Solidity. Popular Truffle commands include – truffle init, truffle compile, truffle test, and truffle migrate. Truffle framework provides in-built compilation of smart contracts, linking, deployment, and binary management. 

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Connect with the top 1% Solidity developers of the world at the lowest price

Solidity language is used for writing smart contracts which are immutable and stored on public Blockchain database. The advantage of smart contracts is that users don’t have to rely on third-party to process their transactions, they are sent automatically and everyone in the peer group is informed about it. But recruiting the best Solidity developers is not an easy task when a large no. of Solidity  developers are competing to grab the job opportunities.

Top Interview Questions to ask while hiring a Solidity developer

A Smart Contract is a computer program which represents an agreement between two users. Smart Contracts are stored on a public Blockchain database and transactions can be automatically made without the need of any third-party. Financial Services, Healthcare System, Government voting system, and Supply Chain are some examples of smart contracts.

Truffle is a very well-known Blockchain environment, testing framework, and an asset Blockchain pipeline that uses the Ethereum Virtual Machine (EVM). Truffle is designed and developed for the freelance Solidity developers for deploying and testing their smart contracts written on Solidity. Popular Truffle commands include - truffle init, truffle compile, truffle test, and truffle migrate. Truffle framework provides in-built compilation of smart contracts, linking, deployment, and binary management. 

Ethereum is a powerful platform for developing and deploying Blockchain applications. It is a decentralized public ledger that records and verifies the transactions. Solidity is a robust object-oriented programming language designed for writing smart contracts on Ethereum. Solidity provides the error-free implementation of the smart contracts of Ethereum due to its object-oriented, flexibility, and counterintuitive ways of problem solving.

Ethereum Virtual Machine (EVM) is a virtual machine that provides a higher level of abstraction between the Ethereum programs and executing machine. EVM increases the efficiency of Ethereum platform and improves software portability. EVM ensures that applications are separated from their host and from each other. For executing tasks, EVM uses a set of instructions. There are total 140 opcodes which makes EVM to be Turing complete, i.e., EVM is able to complete each and every task if the resources are enough. 

Ethereum wallets are the applications which let Blockchain users interact with their Ethereum account. Wallets provide users the facility to manage their accounts on Ethereum platform. Ethereum wallets are controlled through a password or a private key that allows users to transfer funds within the wallet. Anyone who has their private keys or passwords can access their funds.

An Ethereum address is a string of letters and numbers beginning with " 0x". The balance of each and every Ethereum address can be seen on the Blockchain network but who is controlling the address is not known as the address is represented through a public string of letters and numbers,

Blockchain is decentralized, distributed, and public ledger that contains multiple transactions which are accessible across a network and every time when a new transaction takes place in the chain, the record is added to every peer's ledger.

  • Distributed Digitalized Ledger - Each participant of Blockchain can access the complete database along with the changes made to it. It is not allowed for a single participant to regulate the information. Every participant can automatically predict the outcome of an event without the need for any intermediary. The Blockchain database is decentralized, i.e., distributed among multiple participants hence known as Distributed Ledger Technology (DLT).
  • Computational Logic - Transactions in Blockchain are programmed with computational logic. Hence, participants can set up the algorithms that will automatically invoke the transactions between the nodes.
  • Immutability of Records - Once the transaction is inserted in the database and the accounts are updated in a record, that record cannot be changed because each record is connected to the previously come records. Several data structures and algorithms are used to ensure the immutability of records, chronological ordering, and availability to all other networking nodes.
  • Node-to-Node Transmission - In Blockchain, the transmission of information takes place straight-forwardly between peers instead of a centralized node. Each user/node stores the information and forwards it to all other participants in the network.
  • Transparency along with Pseudonymity - A transaction and its information are visible and accessible to anyone within the blockchain system. The transaction takes place between blockchain addresses and each node has a unique 30 plus alpha-numeric characters address associated with it. Participants can choose to be anonymous or provide their identity to other participants in the network.

Proof-of-Work (PoW) algorithm confirms the transaction and creates a new block in the Blockchain network. In the PoW algorithm, miners compete with each other to complete their transactions on the network. This is called Mining. The first miner who solves the blocks problems earns a reward. 

 

In Proof-of-Stake (PoS) algorithm, a set of nodes stake their cryptocurrencies for the transaction validation. The creator of a new block is selected in a deterministic manner depending on its wealth. PoS doesn’t give any block reward, hence miners take the transaction fees only. Proof-of-Stake can be more cost-effective as compared to Proof-of-Work.

Frequently Asked Questions

UltraGenius is one of the leading platforms for hiring remote talent and connecting developer and part-time developers with Silicon Valley businesses. We focus on finding the best talents who will perform extremely well and will be easily integrated into your teams. We filter out only the top 1% most skilled developers among the 20K+ developers who have applied on our platform. Candidates have to prove their self-reported experience by giving Ultragenius’ s skill tests.

UltraGenius first tests the developer’s skill set by conducting a two and half hour hiring test. Our hiring test judges a candidate on all aspects like aptitude, case study analysis, verbal and reasoning, coding questions based on data structures and algorithms, software engineering, system design, and more. Then, there is another round for the candidates who are selected from this round called “Higher-level Assessment Skill Test”, which is a video round that deeply analyzes Solidity developers’ major skills and asks questions about the projects they have worked upon.

Fill up the form which is on every hiring freelancers’ page and we will inform you once we select the top 1% Solidity developers matching your job requirements.  After analyzing the candidates based on their resumes and two assessment tests, we provide you the feedback quickly. And if the developer selected by our team are fit for your job role, then we also provide the onboarding.

UltraGenius offers you only the most skilled developers who are top 1% among the 20K+ developers who have applied on our platform. After a rigorous selection and testing process, we sort out only the top candidates for you. You can check out UltraGenius’ s selection process for hiring  Solidity developers on https://www.ultragenius.club/hire-solidity-freelancer.

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