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Solidity Development Company

Build diverse dApps with our robust Solidity smart contracts and unfold innovations across new verticals of the web3 ecosystem.

Solidity Development Company

We Are an Expert Solidity Development Company

We create decentralized applications and smart contracts for multiple fronts like DeFi, DAOs, digital identity, gaming, tokenization and other legal applications. We have successfully deployed 80+ smart contracts and worked on 15+ blockchain projects.

Our Solidity Development Services

Smart Contract Development

We write, test and deploy contracts on blockchains like Ethereum, Neo, and Solana, helping clients leverage the benefits of Solidity programming language.

Digital Token Creation

We help you mint, upgrade and transfer your digital tokens powered by smart contract standards like ERC20, ERC721 and ERC1155.

Exchange Platform

We write and deploy secure, authenticated and upgradable code architected by our Solidity experts to help businesses build the exchange platform with the feature set specific to their niche.

dApp Development

dApp Development

We help you acquire both on-chain and off-chain data with the dApp microservices. As Solidity smart contract experts, we will identify the user and the components of the dApp, and deliver a perfect result.

Stablecoin Development

We help you build solidity-based smart contracts against crypto-volatility by launching Stablecoins. Peg cryptos to assets like fiat currency, gold or other assets to tap into defi opportunities. We understand custodian integrations and on-ramp and off-ramp architecture.

DAO Development

Starting from writing DAO smart contracts, deploying governance nodes and creating the interface, we understand how to build and launch DAOs.

Solidity Technology Tools

Solidity REPL

We write codes using Solidity REPL, a true general-purpose computing environment.


Using Solgraph, we generate a DOT graph that helps visualize the function control flow of smart contracts ad highlights security vulnerabilities.


We use Evmdis to perform static analysis on the bytecode that provides high abstraction than raw EVM operations.


We use Doxity to generate documentation for Solidity.

Our Solidity Smart Contracts Development Process

Requirement Gathering

  • Understanding the requirements for a new and existing application
  • Identify business logic for smart contracts
  • Define off-chain & on-chain business entities
  • Product’s roadmap

Team Members

  • Solutions Specialist
  • Technical Lead
  • UX Lead
  • Business Analyst
  • Solidity Consultant


  • NDA
  • Use cases
  • Off-chain & on-chain data

Technical Design

  • Create data flow diagrams
  • Design technical architecture
  • Document technical GDPR compliance requirement
  • Create sprints and delivery milestones

Team Members

  • Business Analyst
  • Solution Specialist
  • Product Manager
  • Solidity Architect
  • Developers


  • Flow diagram
  • System blueprint
  • Block definitions
  • Epics and user stories
  • Document scalability and security requirements


  • Pre-alpha
  • Alpha
  • Beta
  • Release Candidate
  • Production

Team Members

  • Developers
  • Quality Assurance
  • Team Leads
  • Scrum Master
  • Technical Architect


  • Source code
  • Smart Contracts
  • Builds
  • Test Blockchain Deployment


  • Provisioning
  • Deploy on Main Chain
  • Hybrid solution
    • Cloud deployment
    • App Store deployment

Team Members

  • DevOps
  • Quality Assurance
  • Delivery Manager


  • Internal distribution
  • If public blockchain
  • Main Network Release
  • Rollout execution
  • If hybrid solution
  • App Store release
  • Play Store release


  • Requirements gathering
  • Backlog prioritization

Team Members

  • Developers
  • Quality Assurance
  • Team Leads
  • Scrum Master
  • Technical Architect


  • Upgrades Smart Contracts
  • Deploy new contracts
  • If hybrid, Upgrade apps and microservices

Our Solidity Smart Contract Sample Code

The following sample Solidity code implements delegated voting through a voting smart contract that resolves electronic voting challenges, such as, how to assign voting rights to the right person and how to prevent manipulation.

pragma solidity >=0.4.22 <0.6.0;

/// @title Voting with delegation.
contract Ballot {
// This declares a new complex type which will
// be used for variables later.
// It will represent a single voter.
struct Voter {
uint weight; // weight is accumulated by delegation
bool voted; // if true, that person already voted
address delegate; // person delegated to
uint vote; // index of the voted proposal
// This is a type for a single proposal.
struct Proposal {
bytes32 name; // short name (up to 32 bytes)
uint voteCount; // number of accumulated votes
address public chairperson;
// This declares a state variable that
// stores a `Voter` struct for each possible address.
mapping(address => Voter) public voters;

// A dynamically-sized array of `Proposal` structs.
Proposal[] public proposals;

/// Create a new ballot to choose one of `proposalNames`.
constructor(bytes32[] memory proposalNames) public {
chairperson = msg.sender;
voters[chairperson].weight = 1;

// For each of the provided proposal names,
// create a new proposal object and add it
// to the end of the array.
for (uint i = 0; i < proposalNames.length; i++) {
// `Proposal({...})` creates a temporary
// Proposal object and `proposals.push(...)`
// appends it to the end of `proposals`.
name: proposalNames[i],
voteCount: 0

// Give `voter` the right to vote on this ballot.
// May only be called by `chairperson`.
function giveRightToVote(address voter) public {
// If the first argument of `require` evaluates
// to `false`, execution terminates and all
// changes to the state and to Ether balances
// are reverted.
// This used to consume all gas in old EVM versions, but
// not anymore.
// It is often a good idea to use `require` to check if
// functions are called correctly.
// As a second argument, you can also provide an
// explanation about what went wrong.
msg.sender == chairperson,
"Only chairperson can give right to vote."
"The voter already voted."
require(voters[voter].weight == 0);
voters[voter].weight = 1;
/// Delegate your vote to the voter `to`.
function delegate(address to) public {
// assigns reference
Voter storage sender = voters[msg.sender];
require(!sender.voted, "You already voted.");

require(to != msg.sender, "Self-delegation is disallowed.");

// Forward the delegation as long as
// `to` also delegated.
// In general, such loops are very dangerous,
// because if they run too long, they might
// need more gas than is available in a block.
// In this case, the delegation will not be executed,
// but in other situations, such loops might
// cause a contract to get "stuck" completely.
while (voters[to].delegate != address(0)) {
to = voters[to].delegate;

// We found a loop in the delegation, not allowed.
require(to != msg.sender, "Found loop in delegation.");

// Since `sender` is a reference, this
// modifies `voters[msg.sender].voted`
sender.voted = true;
sender.delegate = to;
Voter storage delegate_ = voters[to];
if (delegate_.voted) {
// If the delegate already voted,
// directly add to the number of votes
proposals[].voteCount += sender.weight;
} else {
// If the delegate did not vote yet,
// add to her weight.
delegate_.weight += sender.weight;

/// Give your vote (including votes delegated to you)
/// to proposal `proposals[proposal].name`.
function vote(uint proposal) public {
Voter storage sender = voters[msg.sender];
require(sender.weight != 0, "Has no right to vote");
require(!sender.voted, "Already voted.");
sender.voted = true; = proposal;

// If `proposal` is out of the range of the array,
// this will throw automatically and revert all
// changes.
proposals[proposal].voteCount += sender.weight;

/// @dev Computes the winning proposal taking all
/// previous votes into account.
function winningProposal() public view
returns (uint winningProposal_)
uint winningVoteCount = 0;
for (uint p = 0; p < proposals.length; p++) {
if (proposals[p].voteCount > winningVoteCount) {
winningVoteCount = proposals[p].voteCount;
winningProposal_ = p;

// Calls winningProposal() function to get the index
// of the winner contained in the proposals array and then
// returns the name of the winner
function winnerName() public view
returns (bytes32 winnerName_)
winnerName_ = proposals[winningProposal()].name;

Big Brands Trust Us


Meet Our Solidity Smart Contract Expert

Akash Takyar

Akash Takyar

Our Engagement Models

Digital Transformation Services LeewayHertz

Dedicated Development Team

Our developers leverage cutting-edge cognitive technologies to deliver high-quality services and tailored solutions to our clients.

Dedicated software development team LeewayHertz

Team Extension

Our team extension model is designed to assist clients seeking to expand their teams with the precise expertise needed for their projects.

Dedicated software development team LeewayHertz

Project-based Model

Our project-oriented approach, supported by our team of software development specialists, is dedicated to fostering client collaboration and achieving specific project objectives.

Get Started Today

1. Contact Us

Fill out the contact form protected by NDA, book a calendar and schedule a Zoom Meeting with our experts.

2. Get a Consultation

Get on a call with our team to know the feasibility of your project idea.

3. Get a Cost Estimate

Based on the project requirements, we share a project proposal with budget and timeline estimates.

4. Project Kickoff

Once the project is signed, we bring together a team from a range of disciplines to kick start your project.

Get your Solidity Smart Contracts today

Frequently Asked Questions

What is Solidity development?

Solidity is an object-oriented programming language created by the Ethereum network team for constructing, designing, and implementing smart contracts on Blockchain platforms. It is the native language of Ethereum and provides several advantages and benefits for developing decentralized applications on the network.

For what purpose is solidity development used?

Solidity development services are mostly used for establishing smart contracts. It also acts as a tool for creating machine-level code and compiling it as an EVM.

Why should we choose Leewayhertz for Solidity development?

Here is the reason why you should choose our services for Solidity development

  • We provide dedicated Solidity developers with experience delivering good quality and assured results.
  • We follow strategies and advanced tools like Solgraph, Doxity, Solidity REPL, and more for Solidity development.
  • Our services are diverse and are completely transparent, and secure. 

What are the features of Solidity?

Solidity is a programming language that is statistically typed and supports inheritance, libraries, and complex user-defined types. It also allows one file to contain multiple contracts with a single namespace. 

Are Solidity and Python similar?

Solidity is an object-oriented and high-level programming language widely used to build smart contracts on Ethereum or any other blockchain network. It is, however, greatly influenced by the three most used programming languages: Python, C++, and JavaScript.