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Smart Contract Development Company

Smart Contract Development
Smart Contract Development

TOP 6 Smart contract development services

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.

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.

We Use the following Technologies for Smart Contract

Brownie
Cardano
Cardano
ERC-1155
ERC-20
ERC-223
ERC-721
ERC-777
ETH (Ethereum blockchain)
ETH (Ethereum blockchain)
EVM
EVM
Ganache CLI
Hardhat
Hardhat
Haskell
Haskell
NEAR
NEAR
NFT
OpenZeppelin
Plutus
Plutus Core
Remix
Rust
Rust
Solana
Solana
Solidity
Solidity
Substrate
Substrate
Truffle
Truffle
Truffle suite
Waffle
Web Assembly
WebAssembly
WebAssembly

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Meet our Smart Contract development team

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).

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Seniority Expert (10+ years)
Location Mexico
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

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Seniority Senior (5-10 years)
Location Ukraine
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;

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Seniority Senior (5-10 years)
Location Ukraine
Blockchain
...

I am a seasoned blockchain developer with proven experience in building, optimizing, and scaling projects across multiple layers and ecosystems. Beyond development, I also bring strategic connections and marketing expertise to help projects succeed from launch to adoption.

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Seniority Senior (5-10 years)
Location Odesa, Ukraine
SOLID 8yr.
DeFi
Cross Chain Bridges
Smart Contract
Azure DevOps
...

Dynamic Senior Blockchain Developer with over 8 years of experience in building and deploying enterprise-grade blockchain applications. Proficient in Solidity and Rust, expertly crafted DeFi protocols managing $75M+ TVL and facilitated $100M+ in cross-chain volume. Proven leadership in guiding engineering teams to deliver high-performance technologies such as a network bridge for Solana-Ethereum interoperability and Cosmos SDK chains. Innovated within the blockchain space by implementing TSS/MPC for secure transactions, designing advanced Layer 2 scaling solutions, developing DEX platforms, and ensuring system robustness through comprehensive DevOps practices. Educated in Computer Science from Sonoma State University, this engineer brings a wealth of knowledge in blockchain frameworks and protocols, programming languages including Solidity, Rust, and Go, as well as cloud infrastructures like AWS/GCP, underpinned by a command of software development methodologies.

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Seniority Expert (10+ years)
Smart Contract 8yr.
Blockchain 6yr.
Rust 5yr.
Solidity 5yr.
Go
...

Software engineer with a Bachelor’s in Computer Science and 8 years of experience specializes in blockchain development, smart contracts, and DApps, mainly in Solidity and Rust. Demonstrated expertise in Ethereum and Solana ecosystems with significant projects such as a fully-featured NFT marketplace and the first multichain swap protocol. Excelled in developing secure, scalable solutions with 99% test coverage in Rust, contributing to the advancement of decentralized protocols. Adept in various technologies including Go, Move, Web3, DeFi, and smart contract auditing, positioning as a valuable asset for blockchain-centric roles.

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Seniority Senior (5-10 years)
Location Zagreb, Croatia
Rust 2yr.
Solana 2yr.
...

- Blockchain Developer with a 5-year background in financial technologies, specializing in Crypto, De-Fi, and NFT domains. - Exhibits proficiency in several programming languages, including Solidity, Rust, JavaScript, and TypeScript. - Key technical experience encompasses Ethereum, Solana, IPFS, and advanced blockchain development tools and practices. - Has experience in smart contract architecture design, blockchain integration, and secure transaction implementation across multiple projects, such as decentralized gaming platforms, NFT collections, and crypto exchanges. - Demonstrated capabilities in both backend technologies (Node.js, Express.js) and cloud infrastructures (AWS suite) - Upper-Intermediate English

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Seniority Senior (5-10 years)
Location Warsaw, Poland
JavaScript 5yr.
Swift 5yr.
FDD 5yr.
Node.js
React
...

Software engineer with 9+ years of experience, excelling in full stack development with expertise in JavaScript, Swift, and iOS development. Proven track record of leading successful projects, including winning multiple hackathons and developing robust blockchain-based solutions. Demonstrates strong technical leadership, having managed diverse engineering teams and fostering agile best practices. Well-versed in various technologies like Node.js, React.js, Firebase services, Ethers.js, Web3.js, and AWS, with a solid foundation in computer science from Universidad Nacional del Nordeste. The engineer's proficiency in building scalable systems for music streaming, live video monitoring, and blockchain integration positions them as a valuable asset to any team seeking deep technical expertise and innovative solutions.

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Seniority Senior (5-10 years)
Blockchain 7yr.
Smart Contract 7yr.
Solidity 6yr.
Dapp 6yr.
DeFi 6yr.
...

Blockchain Developer | Web3 Engineer | Smart Contract Specialist Experienced Blockchain Developer with a deep understanding of decentralized applications (dApps), smart contracts, and blockchain architecture. Skilled in Ethereum, Solana, and Binance Smart Chain (BSC), with expertise in Solidity, Rust, and Web3 integrations. Passionate about building scalable, secure, and efficient blockchain solutions that drive innovation in DeFi, NFTs, and enterprise blockchain applications.Key Skills & Expertise: ✅ Blockchain Development: Smart contracts, tokenomics, DeFi protocols, NFT marketplaces ✅ Smart Contract Programming: Solidity, Rust, Move, Cairo ✅ Fullstack Web3 Development: Node.js, React, Next.js, Nest.js, Web3.js, Ethers.js ✅ Blockchain Frameworks: Ethereum, Solana, BSC, Polygon, Hyperledger ✅ Security & Auditing: Smart contract security, cryptography, vulnerability mitigation ✅ Infrastructure & DevOps: IPFS, The Graph, Oracles, Infura, Alchemy, Hardhat, Truffle ✅ Consensus & Protocols: Proof of Work (PoW), Proof of Stake (PoS), Layer 2 scaling

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Seniority Senior (5-10 years)
Location United States
Rust 2yr.
Solidity
...

- Engineer who has 6+ years of experience with many programming languages, frameworks, and platforms; - 2+ years experience with developing smart contracts on Rust; - Solid skills with Solidity; - Working experience in building an NFT marketplace platform on Polygon and Binance Smart Chain using ERC-721 and ERC-1155; - Experience with ether.js, web3.js, and JS/TS frameworks; - Familiar with blockchain Ethereum, Binance, Tron, Solana, Polkadot, Tezos, Polygon, Huobi ECO chain, etc; - Deep knowledge in implemented Metamask, Torus, and other wallets to increase user experiences with the web apps; - Advanced English; - Available ASAP.

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Seniority Senior (5-10 years)
Location Singapore
NFT 5yr.
Smart Contract
FDD
CI/CD
SOLID
...

Accomplished Blockchain Developer with over 5 years of expertise in designing and implementing advanced applications with a focus on blockchain technology, smart contract and dApp development. Strengths include hands-on experience with PoS/PoA sidechains, Ethereum, Binance, Tron, and a plethora of ERC standards, backed by robust skills in Golang, JavaScript, Solidity, and cloud technologies. Proficient in fostering innovative database design, API development, and server management, which are further enhanced by a seasoned track record in deploying blockchain solutions on AWS and GCP. Distinguished by participation in high-profile projects like decentralized exchanges and NFT platforms, showcasing not only technical prowess but also effective collaboration with cross-functional global teams and deployment of CI/CD pipelines.

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Seniority Senior (5-10 years)
Location Indore G.P.O., India
PHP
NestJS
microservices architecture
TypeScript
React
...

Senior Full Stack Developer with a Master’s in Computer Science and a depth of experience in front/backend technologies across multiple domains. Practical knowledge of Python, Django, Next.js, NestJS, and a robust foundation in PostgreSQL. Proven capability in leading development projects, optimizing database schemas, and leveraging CI/CD pipelines with Docker and Kubernetes. Skilled in Agile methodologies, project management, and UI/UX design paired with a substantial background in IoT solutions, showcasing versatility and technical prowess. Recognized for streamlining operations, reducing costs through automation, and advancing retail technology platforms.

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Seniority Senior (5-10 years)
Location Frankfurt, Germany

3 most common engagement models:

chart laptop scaled aspect ratio

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.
team job photo

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.

woman with data dashboard

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.
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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.
Europe’s Data Vision: Dataspaces for Zero-Trust AI Infrastructure
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Europe’s Data Vision: Dataspaces for Zero-Trust AI Infrastructure

Upstaff builds AI-Driven Data Platform for Environmental Organizations
Case Studies

Upstaff builds AI-Driven Data Platform for Environmental Organizations

Bringing 2M+ Wallet Ecosystem to the Next Level Decentralized Operating System.
Case Studies

Bringing 2M+ Wallet Ecosystem to the Next Level Decentralized Operating System.

Frequently Asked Questions

What is a smart contract? Arrow

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? Arrow

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? Arrow

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? Arrow

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? Arrow

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? Arrow

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? Arrow

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? Arrow

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? Arrow

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 Arrow

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.

What Trends to Expect in 2025 Arrow

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.