Smart Contract Development Company
TOP 6 Smart contract development services
Upstaff employs a large pool of experienced blockchain developers internally. We’ve been in this business for over 10 years and have developed several state-of-the-,art solutions. As a result, we are able to offer our customers full-stack smart contract development and other services as mentioned below.1. Smart contract development
We have a dedicated development team who develops any form of such automatic and irrevocable “digital contract” which can satisfy all the customer’s needs and be implemented into any business niche.2. Smart contract design
Many of the design and programming rules that are currently used in typical software environments can also be leveraged on smart contract. We create the most intricate designs for a fair price.3. Smart contract audits
We ensure that a solution of this sort is tested to exclude errors and vulnerabilities before we deploy it on the mainnet. We also audit third party contracts to make sure there is nothing wrong with them.4. Smart contract optimization
When creating smart contracts, Upstaff uses an optimization approach that enables us to create cost and computation efficient solutions. This, in turn, cuts down the average consumption of gas.5. Smart contracts for dApps
We design many decentralized apps that support peering transactions directly from one end to the other. We help a customer’s business tackle any challenge in the most effective way possible using our smart contract.6. Hire smart contract developers
You can hire our employees if you are looking for experienced blockchain experts to optimize the current project. The experts at Upstaff are willing to assist you at any stage of your growth.Best smart contract platforms we work on
Upstaff has extensive experience creating blockchain and blockchain based solutions. We not only offer our clients all-purpose smart contract development but also advise them to choose the most suitable blockchain platform. We go through every tiny detail of each specific smart contract use case and help customers choose one of the platforms cited below.
Ethereum
Our Ethereum smart contract developers have years of experience in building smart contracts of all kinds, including decentralized applications on one of the most proven and renowned blockchain networks.Hyperledger
We will provide our customers with Hyperledger smart contract (chaincode) of all types on a highly scalable and secure Linux-based blockchain platform. These contracts are particularly lauded for data protection.EOS
Upstaff is willing to create any EOS smart contract which will let our clients take advantage of both the massive throughput that this platform provides to its users and the flexibility of its governance model.Tron
If you’re looking for scalable and stable business solutions, Upstaff will deliver smart contract MLM on Tron solutions that will definitely help you make more efficient business decisions.Solana
As one of the fastest blockchain platforms, Solana comes with several benefits to the user. We develop any Solana smart contract so that our clients can take advantage of the most important properties of the blockchain such as speed, cost, and scale.XDC Network
XDC smart contracts can be both efficient and interoperable. The inter-blockchain nature of such applications enables companies to design projects that will work across multiple scalable and economical platforms.Polkadot
Each Polkadot smart contract is the fastest, decentralises, and has the most security. In this spirit, Upstaff’s developers leverage all these advantages to offer enterprises lightning-fast, high-security dApps.Stellar
Fast, scalable, secure, and cost-effective transactions make Stellar smart contract an attractive proposition for companies of any size. If you would like your application to have all these advantages, our developers will customize it.XRP Ripple
Ripple is an international currency exchange and settlement platform for payments from around the globe. We can also build smart contract around the XRP Ledger.Some of the industrial smart contract solutions we deliver
Blockchain, and smart contracts in particular, are applicable across many industries, so it’s a one-size-fits-all platform for your business regardless of the industry you’re operating in. Upstaff creates smart contract for other companies as part of our daily development. These are just some of the industries we cover.
Some of the industrial smart contract solutions we deliverRights Management (Tokens)
Token smart contracts enable the creation, control, and ownership of specific digital tokens on blockchain networks. The token contract adds features into its tokens, giving owners the ability to enjoy utility/insurance in a dApp (utility token), voting weight in a protocol (governance token), equity in a business (security token), ownership of a particular real-world or digital product (non-fungible token), etc. For instance, the FIL token pays for Filecoin’s decentralized storage services and the COMP token lets you be part of Compound protocol governance.Financial Products (DeFi)
DeFi is a set of applications that, through smart contract, replicate traditional financial products and services including money markets, options, stablecoins, exchanges, and asset management, and combine multiple services to create new financial primitives through permissionless composability. The smart contract may store the funds of users in escrow and exchange them among users under certain circumstances. BarnBridge, for instance, uses smart contracts to automate trades if users need fixed asset exposure at a specific price (45% token A, 55% token B), while Aave uses smart contracts to allow for permissionless and decentralized lending and borrowing.Gaming and NFTs
Blockchain-based games employ smart contracts that allow tamper-proof execution of in-game commands. PoolTogether, for instance, is a risk-free savings game that lets users place their money in a collective pool that gets diverted into a money market where it gains interest. At the end of a certain time, the game closes and one player is chosen at random to get all the interest that has accrued and everyone else can withdraw their original bet. Likewise, limited edition NFTs can support equal distribution schemes and RPGs can offer random loot drops to ensure that all players get a fair chance at receiving exclusive digital assets. Most projects rely on Chainlink Verifiable Random Function (VRF) — a cryptographically validated random number generator (RNG) that has been shown to be tamper-proof, in other words, the RNG itself can be publically verified.Healthcare
The possibilities for smart contracts are enormous, particularly in the realm of data management and transparency.Finance
Blockchains and smart contracts are widely used in the financial industry where speed, transparency, and efficiency of payments is important.eCommerce
Smart contract automate the payment process, establish new payment channels, and track goods on-delivery.Logistics and Supply Chain
By utilizing blockchain technologies in this field, parties can trust an environment where every user can view the complete timeline of a given delivery item.Real Estate
The tokenization of the real estate market will not only facilitate the transactions, but also allow all parties in the transaction to see details of every property object.Government
Smart contract can transform many processes, such as tax collection, voting, etc., by making them easier and more efficient.Discover more about Smart Contract:
We Use the following Technologies for Smart Contract
Brownie
Cardano
ERC-1155
ERC-20
ERC-223
ERC-721
ERC-777
ETH (Ethereum blockchain)
EVM
Ganache CLI
Hardhat
Haskell
NEAR
NFT
OpenZeppelin
Plutus
Plutus Core
Remix
Rust
Solana
Solidity
Substrate
Truffle
Truffle suite
Waffle
Web Assembly
WebAssembly
Meet our Smart Contract development team
Haskell 3yr.
Scala 2yr.
Plutus 2yr.
Akka
Cardano
- 3 years of experience in Plutus / Cardano smart contracts developer role (Plutus Core, Plutarch)
- Cardano ecosystem knowledge
- Haskell, Scala, Cabal/Stack, GADTs/Type families, Generics, Servant, lenses, mtl, free monads - senior-level professional
- Functional programming with FRP, Redux, Event sourcing, Category theory
- OOP, OOD, UML, Design patterns, SOLID, DI. TDD, BDD, Unit, functional, and integration testing
- 14 years of experience in software engineering
Node.js 5yr.
React 3yr.
Solidity
NFT
• 15+ years of commercial software development experience
• Solid knowledge of Solidity, C++, JavaScript, TypeScript;
• Deep understanding of blockchain architecture and smart contract logic;
• Cosmos, Tron, Avalanche, Binance Smart Chain, Ethereum dApps;
• Strong skills in developing NFT smart contracts. Support and payload verification;
• NFT Marketplaces (ERC - 721/1155), Crypto Payment Solutions & DeFi Cross Chain Bridges - ERC-20 Tokens, ICO, DEX, Staking, Swapping;
• Highly qualified knowledge of Stripe payment system integration to blockchain data;
• 10+ years experience working with Python;
• 5 years experience working with Node.js;
• Strong abilities with Express;
• Experience working with Docker, and Kubernetes (K8s);
• 3+ years of development experience with React.js.
• No scheduled vacations within the next 3 months;
Rust
Solana
- Senior Blockchain Engineer with 20+ years in software development and a strong track record in the Solana ecosystem;
- Experienced in Rust for Solana smart contract development, with extensive experience building on-chain programs for DeFi, staking, NFT, and messaging platforms;
- Skilled in full-stack development: React and TypeScript for front-end dApps, Node.js and Python for backend systems;
- Experience with AWS and Google Cloud for scalable cloud applications and infrastructure;
- Ability to lead teams and manage projects, including migrating Ethereum products to Solana (Community Gaming);
- Skilled in blockchain frameworks and tools: Anchor, CPI, Metaplex, Token-2022;
- Strong SQL background with hands-on experience in PostgreSQL, MySQL, and SQLite;
- Experienced in system architecture, Linux server administration, and distributed applications;
- Notable achievements include leading Solana product delivery for NeuralBond (on-chain messaging) and Palus Finance (staking platform).
Solidity 5yr.
Hardhat
Foundry
OpenZeppelin
- Lead Blockchain Engineer with 6+ years in software engineering and 5+ years specializing in Solidity and DeFi protocol architecture on EVM-compatible chains.
- Expertise in designing and deploying upgradeable DeFi vaults (ERC-4626), AMMs, DEXs, order-book trading systems, and yield-farming automation.
- Proficient with Hardhat, Foundry, OpenZeppelin, Slither, Chainlink oracles, ethers.js, and Web3.js for secure, gas-optimized smart contract development and audits.
- Experienced in leading distributed teams, enforcing protocol security strategies, and coordinating multi-disciplinary engineering workflows for production-grade blockchain solutions.
Solidity 4yr.
React 4yr.
TypeScript 4yr.
Foundry 2yr.
- Blockchain Engineer with 3+ years of experience in DeFi, smart contracts, and Web3 full stack development using Solidity, Foundry, React, TypeScript, wagmi, and viem.
- Skilled in secure smart contract development, fuzz testing, invariant testing, mainnet fork testing, and static analysis with Slither and Aderyn.
- Built scalable DeFi governance, vault, treasury, NFT, and subscription-based blockchain systems, plus fintech payment infrastructures integrating Binance APIs and microservices.
- Experienced with ERC20, ERC721, and ERC4626 standards, decentralized voting systems, and full stack development using Node.js, Express, React, and REST APIs.
Java 6yr.
Python 6yr.
Solidity 4yr.
Blockchain 4yr.
Smart Contract
- Software engineer with strong foundation in Computer Science and Engineering (AI & Robotics specialization) from Vellore Institute of Technology, CGPA 9.05/10.
- Proficient in Java, Solidity, Python, Rust, Go, and JavaScript; experienced in blockchain development, distributed systems, and financial transaction modules.
- Led zero-downtime Oracle to PostgreSQL migration, cutting costs by $500K+ annually and boosting system performance by 73%.
- Developed blockchain-based decentralized crowdfunding and immutable legal records platforms, recognized in top 10 at Smart India Hackathon 2023.
- Skilled in CI/CD, automated testing (Selenium), and security operations, ensuring robust, scalable software delivery.
Solidity 6yr.
Rust 4yr.
Solana 2yr.
- Senior Blockchain Developer with 5+ years designing and deploying smart contracts on Ethereum, EVM-compatible chains, and Solana using Solidity and Rust.
- Expertise in full-stack DApp development, integrating Web3 libraries (Ethers.js, Web3.js), wallet SDKs, and event-driven backend architectures.
- Proven track record optimizing gas costs, securing contracts with reentrancy guards and access control, and conducting internal audits to ensure robust security.
- Skilled in cross-chain token bridges, DeFi protocol design, and real-time systems handling.
- Strong background in Node.js, TypeScript, React, Next.js, REST/GraphQL APIs, Agile methodologies, and CI/CD pipelines.
Python 6yr.
Solidity 3yr.
Go 3yr.
TypeScript 3yr.
Smart Contract 3yr.
- Expertise in designing upgradeable smart contracts using the diamond pattern and UUPS proxies, managing 180k+ NFTs, and securing $2M+ in tokens with gas-optimized staking and vesting contracts.
- Proficient in Go, TypeScript, and Solidity, developing backend services, TypeScript SDKs, and cross-chain token bridges (Polygon, Ethereum, Base, Solana).
- Skilled in integrating Uniswap V3 oracles, building metatransaction flows, and automating multisig treasury operations with Node CLI tooling.
- Strong background in blockchain security, performing audits, vulnerability analysis with MythX and Slither, and implementing best practices before mainnet releases.
Solidity 2yr.
Foundry 1yr.
Hardhat 1yr.
Rust
- Over 2 years of expertise in blockchain development, specializing in Solidity, Rust, and smart contract security auditing across 150+ networks including Ethereum and Layer 2 chains.
- Experienced in full-stack development using TypeScript, Node.js, React.js, and cloud technologies, with strong command of testing frameworks like Hardhat, Foundry, and static analysis tools.
- Engineering background with a Bachelor’s degree in Electrical Engineering and advanced training in smart contract hacking and Solidity development, emphasizing secure, scalable, and maintainable code architectures.
Solidity 3yr.
Node.js 2yr.
TypeScript 2yr.
Hardhat 2yr.
Foundry 2yr.
Senior Smart Contract Engineer with 3+ years shipping DeFi, NFT, and ICO/TGE platforms across Ethereum, Polygon, BSC, and Base. Expert in Solidity, Hardhat, Foundry, ethers.js, and Viem — 200,000+ users served, 95%+ test coverage, zero critical vulnerabilities.
Solidity, Ethers.js, Viem, Hardhat, Foundry, Slither, OpenZeppelin, UUPS Proxy, ERC-20/721/1155, Chainlink, ECDSA, Node.js, TypeScript, React.js, The Graph, AWS, Git, Ethereum, Polygon, BSC, Base
Solidity 5yr.
Smart Contract 5yr.
Node.js 3yr.
Express 3yr.
Web3.js 1yr.
- Blockchain engineer with 6+ years in smart contract development using Solidity, Ethereum, Chainlink, and OpenZeppelin, specializing in upgradeable contracts.
- Proficient in backend API development with Node.js, AWS Lambda, DynamoDB, and integration of decentralized data analytics via The Graph protocol.
- Experienced in DevOps automation for blockchain deployments using Hardhat, Truffle, OpenZeppelin Defender, and Gelato, enhancing system security and scalability.
- Holds a Bachelor's degree in Information Science and Engineering with a 9.16 CGPA, certified by Emurgo Academy and Atrium Academy, and recognized for contributions in international hackathons and research conferences.
ETH (Ethereum blockchain)
Smart Contract
Web3
Developed and deployed blockchain and web3 applications involving smart contracts, wallet integrations, token management, and decentralized features. Built scalable frontend and backend systems using React.js, Node.js, and MongoDB. Worked on optimizing application performance, improving user experience, and integrating blockchain functionality securely with modern web technologies.
3 Most Common Engagement Models:
Project-Based Smart Contract Development
Our project-based engagement platform allows your business to quickly develop new products or services. Using our project-based structure, we collaborate with you to figure out what your project needs are and provide premium Smart Contract Development Services. We care about project goals and timelines.
Dedicated Smart Contracts Development Team
We have dedicated development teams to help your company develop cutting-edge products that leverage decentralized web benefits. Our professional smart contract Developers will exclusively work on your project and create high-quality Smart Contract Development Solutions.
At our smart contract development company, we provide team extensions services so that your company can grow in the ability to develop and deliver faster. Our smart contract developers are certified and can easily fit into your existing team to provide high-end services.
Smart Contract Consulting and Audit
At Upstaff, we specialize in providing consulting services to help make the right decisions regarding smart contracts development, smart contracts audit, conducting thorough market research, feasibility assessment, analysis of blockchain platforms, prioritizing of features, etc. We provide consulting services to align your project with the market needs and business objectives so that your product works successfully and is sustainable on the market.
Our cooperation process
01
Business and technical analysis
Before even committing a single line of code, we thoroughly review the client’s needs, the project requirements, and any potential risks the application may face later on. We also conduct a technical review of the project and recommend the blockchain network in which the app will be deployed.
02
Technical design
This phase allows Upstaff’s team to develop the technical blueprint of the project and create all the required documents that will be utilised later in putting into practice. Our smart contract development company considers every small detail of the future application to accommodate all use cases of clients.
03
Development
After doing all the preparation work, it’s time to create the code and construct the app as specified in the documentation. When written into the blockchain, smart contracts can never be modified or undone. Therefore we employ the Testnet to ensure it is error and bug-free and that it meets all the specifications of the documentation.
04
Testing stage
At this stage, our specialists run all sorts of audits, including security one, to uncover every possibility of any deviation from what we’ve outlined in advance. We even look for all possible leaks and plug them. This step also includes how optimized the app is for Upstaff’s experts.
05
Deployment on Mainnet
Once the app is tested on Testnet and adjusted to its performance, the smart contract can be sent to the selected blockchain network. As more users and capabilities are added, any change will be possible because of the open-source nature of the code.Case Studies
We closely collaborate with recruitment & talent acquisition teams on urgent or hard-to-fill positions. Discover how startups and top-tier companies benefit.
Frequently Asked Questions
What is a smart contract?
Smart contracts are software programs executed by computers on a blockchain network. Each smart contract contains code that carries conditions that, when fulfilled, executes actions. Because they are deployed on a decentralized blockchain rather than a centralised server, smart contracts let multiple parties arrive at a collective conclusion accurately, efficiently, and without the possibility of manipulation.
Powered in their current incarnation by the Ethereum blockchain, smart contracts have been the foundation of the Web3 space; the core of DeFi, NFT, gaming and other Web3 centric applications.
Whether it is codifying arbitrarily defined contract terms between irreconcilable entities, automating and decentralized markets, or issuing fungible and non-fungible tokens, smart contracts are how developers implement decentralized blockchain applications. Follow on for a primer on smart contracts and society’s impact.
What are the benefits of a smart contract?
One benefit of using them is that they mitigate or even eliminate the need for intermediaries. Smart contracts operate in a completely autonomous fashion, and so neither party is required to keep track of its execution. These apps can never be changed, which makes smart contracts one of the most secure and efficient ways to establish digital contracts. They can be implemented across most, if not all, the domains and specialties.
What are smart technology’s advantages over traditional contract?
They are fast and secure. Smart contracts are what get you out of the middleman and, as a result, make all your trades and operations cost-effective.
What are the best blockchain frameworks for smart contract creation?
When it comes to selecting the best smart contract development platform, our professionals look at various factors, such as transaction speed, scale, consensus type, etc.
How do smart contracts work?
These are software programs that consist of a particular series of events and states. Upon achieving some state, something specific occurs.
What does smart contract do?
Such a digital contract is commonly deployed across many industries to provide independent payments of any kind that can be made rapidly and cost effectively.
What is the most popular smart contract?
The blockchain world has a lot of good smart contracts out there, but the best one by far is Ethereum’s ERC-20 token standard. It has since become the preferred method of creating new tokens on the Ethereum blockchain, powering millions of ICOs and dApps.
Which Platform is Best suited for Smart Contract development?
Ethereum is the most used and preferred platform for creating smart contracts because of its excellent infrastructure, vast developer community, and language compatibility. Other platforms, such as EOS, TRON, and Binance Smart Chain are also increasingly being used for smart contract development.
What programming languages do you use to write smart contract?
Here at Upstaff, we are leveraging Solidity which is a programming language built specifically for Ethereum blockchain-based smart contracts. Depending on the requirements of our clients, we may use other languages such as Rust and Vyper.
3 Smart Contracts Trends in 2024
1. Seamless Integration with Traditional Business Operations
Perhaps the biggest 2024 trends would be blending smart contracts with existing business processes. Businesses are becoming increasingly conscious of how smart contracts can streamline, reduce costs, and mitigate risk through automated day-to-day tasks and compliance with the agreement.
In supply chain management, for example, smart contracts can automatically track and validate the goods which will eliminate fraud and error. Smart contracts can speed the transfer of property instantly in real estate by eliminating intermediaries and thereby accelerating the transaction.
Smart contracts are transforming the legal world, too. Legal documents are typically very tedious and time-consuming, but smart contracts automate a lot of this. For example:
Contract Execution Automated: Smart contracts are executed automatically under pre-set conditions with no need for user action.
Dispute Resolution: Since there are clear and irrefutable signatures on the blockchain, disputes can be quickly and transparently settled.
Law Enforcement: Smart contracts can make sure they are legal, and comply with laws and regulations by writing rules into the code. The more businesses that leverage blockchain technology, the more smart contracts will enter their processes, creating innovation across multiple industries. 2. Enhanced Regulatory Frameworks and Broader Adoption
As governments and regulators around the world begin to see the potential of blockchain and smart contracts, they’re attempting to come up with guidelines and standards for their adoption. With the EU’s support for the Data Act, including a critical provision to govern smart contracts, we have made a massive leap toward more transparency and security. The US, and even Asia, are moving toward building smart contract regulatory infrastructures as well. What does this mean? More regulatory clarity will enable businesses to make more strategic use of smart contracts. With clear legal frameworks, smart contracts can become more widely used across industries with broad acceptance. This transformation will also address security, privacy and compliance issues and create an ecosystem that is conducive to innovation and expansion. 3. Breakthroughs in Decentralised Finance (DeFi) One of the most innovative uses of smart contracts is DeFi. Smart contracts are at the heart of the DeFi revolution, enabling decentralised financial services. Smart contracts – from decentralised exchanges to loan ecosystems – are automating billions of dollars of transactions per day, propelling the DeFi industry and providing financial services that are accessible and interoperable across blockchain networks. We’re always working on new DeFi protocols and platforms to give consumers even more advanced, safe financial products. Artificial market makers (AMMs), yield farming, and decentralised exchanges (DEXs) are a few innovations that will further advance and give users greater access to financial services and investment possibilities.
Dispute Resolution: Since there are clear and irrefutable signatures on the blockchain, disputes can be quickly and transparently settled.
Law Enforcement: Smart contracts can make sure they are legal, and comply with laws and regulations by writing rules into the code. The more businesses that leverage blockchain technology, the more smart contracts will enter their processes, creating innovation across multiple industries. 2. Enhanced Regulatory Frameworks and Broader Adoption
As governments and regulators around the world begin to see the potential of blockchain and smart contracts, they’re attempting to come up with guidelines and standards for their adoption. With the EU’s support for the Data Act, including a critical provision to govern smart contracts, we have made a massive leap toward more transparency and security. The US, and even Asia, are moving toward building smart contract regulatory infrastructures as well. What does this mean? More regulatory clarity will enable businesses to make more strategic use of smart contracts. With clear legal frameworks, smart contracts can become more widely used across industries with broad acceptance. This transformation will also address security, privacy and compliance issues and create an ecosystem that is conducive to innovation and expansion. 3. Breakthroughs in Decentralised Finance (DeFi) One of the most innovative uses of smart contracts is DeFi. Smart contracts are at the heart of the DeFi revolution, enabling decentralised financial services. Smart contracts – from decentralised exchanges to loan ecosystems – are automating billions of dollars of transactions per day, propelling the DeFi industry and providing financial services that are accessible and interoperable across blockchain networks. We’re always working on new DeFi protocols and platforms to give consumers even more advanced, safe financial products. Artificial market makers (AMMs), yield farming, and decentralised exchanges (DEXs) are a few innovations that will further advance and give users greater access to financial services and investment possibilities.
What Trends to Expect in 2025
Looking ahead to the future, several trends are expected to shape the future of smart contracts:
- Identity Management
Using blockchain technology, our smart contract development services can help individuals create a secure and portable digital identity. By implementing smart contracts, we can provide individuals with control over their digital identity, streamlining identity verification processes across different organizations. This will help reduce identity fraud and increase the security of personal data. - Lending
Our smart contract development services can help lending platforms reduce the need for intermediaries and minimize credit risk. We can automate lending processes by implementing blockchain-based smart contracts, enabling faster and more cost-effective loans. This will help reduce costs for lenders and borrowers, increasing access to credit and improving the efficiency of lending platforms. - Insaurance
At our smart contract development company, we can help automate insurance claims processing using blockchain-based smart contracts. By implementing smart contracts, we can create a transparent and secure system for insurance claims processing, ensuring timely and accurate compensation while minimizing fraud and errors. This will help reduce costs for insurers and increase trust in the insurance system.