Hire Solidity Developer

Name: Solidity Developer
Brand: Upstaff
Rating: 4.8 (54198 reviews)

Need a Solidity developer for your blockchain project, from crafting secure smart contracts, decentralized applications (dApps), to scalable solutions for Ethereum-based projects like DeFi, NFTs, and DAOs. Whether you need to hire a Solidity developer for a custom blockchain integration or a remote Solidity engineer to optimize gas costs, Upstaff connects you with top talent proficient in Solidity, Web3.js, and modern frameworks. Got a project? Let’s talk.

Start in 48 hours: Zero recruitment fees.
Every developer is pre-vetted and audit-ready.
From DeFi protocols to NFT marketplaces — we’ve done it before.
Flexible: part-time, full-time, or fixed-price projects.

2K+ Vetted Developers

KYD Know Your Developer

48 hours average start

Meet Upstaff’s Vetted Solidity Developers

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Rogerio F.Senior Solidity Developer

Solidity

...

- 4 years of experience in Ethereum blockchain and Solidity programming. - 2 years of experience in C , Python programming. - Highly professional blockchain developer with comprehensive accomplishments applying high-security smart contracts to ensure success and achieve goals. - Strong experience in EVM-compatible smart contracts development. Demonstrated success developing and seamlessly executing smart contracts in complex DeFi and DEX structures. - Upper-Intermediate English - Available ASAP

Middle

Bauru, Brazil

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SerhiiSolidity & Full-stack Web3 Engineer, Architect, Team-Lead.

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;

Senior

Ukraine

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TinaSolidity Smart Contract Developer

Solidity

...

- Experience working with Solidity; - Good understanding of Blockchain technology; - 3+ years of experience in Smart Contract development; - Deep skills with Hardhat, and Truffle; - Experience working with ethers.js and Web3.js; - Good knowledge of Ethereum, and BNB Chain; - Experience working on dApps, DeFi, and NFT projects; - In-depth abilities in creating and deploying ERC20, ERC721, ERC1155, BEP20, and BEP721 tokens; - Intermediate English.

Middle

Kazakhstan

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Sethu R.Blockchain/Solidity Engineer

Solidity

...

- A dedicated and goal-oriented individual with 3+ years of experience in the field of blockchain research and development; - Developed a blockchain prototype application that helps track the expenditure of public funds; - Conducted workshops, seminars, and webinars for students and professionals on various blockchain technologies; - Developed blockchain smart contracts for a central government-funded vaccination supply chain management project using Solidity; - Available: ASAP.

Middle

India

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Andrews R.Solidity Engineer, Product Manager

Solidity

NFT

Smart Contract

...

- Developer with 18+ years of experience in large IT companies , with Bachelor’s Degree in Systems Analysis and Blockchain Engineer training. - Developer of Smart Contracts and tokens since 2017 (Solidity -EVM ) and a great enthusiast participant in the world of cryptocurrencies since 2014. - Data Science Academy Mentor in 2020. - Advanced English. - Available ASAP.

Senior

Brazil

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Luan P.Senior Go/Solidity Blockchain Engineer

Ruby on Rails

Solidity

...

Acquired a bachelor's degree in Information Systems from UNIVEM in Brazil. Since 2014 work as a Web Developer and since 2021, I have been working closely with Web3 technologies. I always look to broaden my knowledge in the area and enjoy participating in new projects. - 8+ years experience in software development; - 5+ years experience with Ruby on Rails; - 3+ years experience with React / Next; - Experience working on projects related to the NFT marketplace and Web3 integration; - Good skills use Solidity for creating smart contracts (ERC-721 tokens); - Experience working with TypeScript, Go on different blockchain projects; - Worked with projects in the field of DeFi and DAO; - Intermediate English; - Available ASAP.

Senior

Sao Paulo, Brazil

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Steven S.Go/Solidity Blockchain Engineer

Solidity

...

- Fast-paced, high-quality, detail-oriented, and self-motivated developer with more than 10 years of experience in the IT industry. - I use the TDD approach for designing the architecture and implementing scalable and maintainable web apps/services. - I have been working on a bunch of projects and meanwhile, I worked in several positions across frontend developer, backend developer, full-stack developer, and lead engineer. - Bridge Smart Contract which is for transferring tokens across networks. - NFT Dapps such as madlab, Art Basel, Fateful Youth - eWallet App and GSM e-commerce product. - Smart contracts in complex Defi and DEX structure - Blockchain networks including Ethereum, BSC, Polygon, and Solana. - Deploy and work on various kinds of tokens - ERC20, ERC721, ERC721A, ERC1155. - Cross-chain smart contracts using LayerZero - NFT market smart contract for auction and offer with lazy minting - Proxy smart contract - NFT marketplace Dapp using Venly - Available: ASAP

Senior

Hong Kong

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Martin C.Expert Rust/Solidity Smart Contract Blockchain Developer

Rust

Solidity

...

-As a senior Programmer and Blockchain developer, with over 6 years of development, I am an expert in NFT Website, NFT Art Generation, and NFT Marketplace, Solidity, Web3, EVM based network chains, Custom smart contracts, ERC20/721, ERC1155, NFTs, IDO's, Bridges Block explorers, UI Web3 Dapps Integration, IPFS. - Smart Contract Development (Solidity/ Rust/ Anchor Framework/ Cosmwasm) - Cardano smart contract by utilizing CosmWasm smart contract by utilizing Rust CosmWasm. - Solanasmartcontractimprovement(Unittest,Solana-program-library,Solana-web3,Raydiumtradeandorca)by utilizing Rust and Anchor system. - Polkadot Relay Chain using Substrate in Rust programming. - Smart contract advancement in networks (Ethereum, BSC, Matic/Polygon) by utilizing Solidity. - Uniswap V2, V3, Curve (Yearn, Convex), Sushiswap, Quickswap, etc. - Written smart contracts for ERC20, ERC223, ERC721, ERC1155, ICOs, airdrop, Vesting, MultiSig, Wallet, etc - DeFi, Dex protocols - Front-end development with Smart contract integration by utilizing Web3, truffle. React (Redux/Thunk/Saga), Typescript, Node js. - NFT minting website andNFT marketplace development(Create a listing by admin, flat&Crypto payment,Bundle Sale/ Bulk Transfers, Drop)

Middle

Buenos Aires, Argentina

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Let’s set up a call to address your requirements and set up an account.

Solidity Developers Tech Radar

Hiring a Solidity Developers? Then You Should Know What Certified Solidity Professionals Bring to the Table!

Table of Contents

Hire Solidity programming language and developer skills diagram. Source: upstaff.com (Hire Solidity Developers)

Solidity programming language and developer skills diagram. Source: Upstaff Hire

Why Hire a Solidity Developer?

A Solidity developer is a specialized software engineer who designs and deploys smart contracts and dApps on the Ethereum blockchain using the Solidity programming language. These experts enable businesses to create secure, transparent, and efficient solutions for industries like finance, gaming, and supply chain. By hiring a Solidity developer, you can leverage blockchain for DeFi platforms, NFT marketplaces, or data-driven analytics, ensuring robust and scalable applications tailored to your needs.

What Does a Solidity Developer Do?

Hire Solidity and Ethereum logo (Hire Solidity Developer for Ethereum)

Solidity developers write, test, and deploy smart contracts using Solidity, ensuring secure and efficient code for Ethereum-based applications. Their responsibilities include:

Designing smart contracts for DeFi protocols, NFT minting, or DAOs.
Integrating dApps with Web3.js, ethers.js, or APIs for seamless user experiences.
Optimizing gas usage to reduce transaction costs on Ethereum.
Conducting security audits to prevent vulnerabilities like reentrancy attacks.
Collaborating with Data Science teams to analyze blockchain data for insights.
Upstaff’s developers bring expertise in tools like Truffle, Hardhat, and Remix, delivering high-quality blockchain solutions.

Why Choose Upstaff to Hire Solidity Developers?

Upstaff has already successfully helped many crypto projects find solidity developers, from top15 Coinmarketcap projects to pre-seed early stage startups. Our developers are skilled in Ethereum, smart contract security, and integrations with cloud platforms like AWS or Polygon, ensuring your project meets industry standards. With a rigorous vetting process, flexible hiring options for remote or on-site roles, and a focus on blockchain innovation, Upstaff ensures you connect with talent that drives measurable results for your DeFi, NFT, or blockchain analytics projects.

TOP instruments, IDEs, libs and resources of a Solidity Developer

Tool Category	Tool Description
Development Frameworks	Hardhat Truffle Foundry
Testing Tools	Mocha Chai Echidna MythX OpenZeppelin Test Environment
Deployment and Interaction Libraries	ethers.js web3.js
Static Analysis and Security Tools	Slither Mythril Certora Prover Securify
Blockchain Development Tools	Ganache Alchemy Infura Tenderly QuickNode Brownie Moralis
Development Environments and IDEs	Remix IDE Visual Studio Code IntelliJ IDEA
Explorers and Debugging Tools	Etherscan Tenderly The Graph Parity/Trace BlockScout
Versioning and Dependency Management	Solc Node.js + npm
Additional Tools and Services	IPFS Chainlink Alchemy Monitor OpenZeppelin Defender Pocket Network Biconomy
Learning and Documentation	Solidity Official Documentation CryptoZombies Ethernaut

Why Upstaff

Upstaff is a technology partner with expertise in AI, Web3, Software, and Data. We help businesses gain competitive edge by optimizing existing systems and utilizing modern technology to fuel business growth.

Real-time project team launch

<24h

Interview First Engineers

Upstaff's network enables clients to access specialists within hours & days, streamlining the hiring process to 24-48 hours, start ASAP.

x10

Faster Talent Acquisition

Upstaff's network & platform enables clients to scale up and down blazing fast. Every hire typically is 10x faster comparing to regular recruitement workflow.

Vetted and Trusted Network

100%

Security And Vetting-First

AI tools and expert human reviewers in the vetting process is combined with track record & historically collected feedbacks from clients and teammates.

~50h

Save Time For Deep Vetting

In average, we save over 50 hours of client team to interview candidates for each job position. We are fueled by a passion for tech expertise, drawn from our deep understanding of the industry.

Flexible Engagement Models

Custom Engagement Models

Flexible staffing solutions, accommodating both short-term projects and longer-term engagements, full-time & part-time

Unique Talent Ecosystem

Candidate Staffing Platform stores data about past and present candidates, enables fast work and scalability, providing clients with valuable insights into their talent pipeline.

Transparent

No Hidden Costs

Price quoted is the total price to you. No hidden or unexpected cost for for candidate placement.

One Consolidated Invoice

No matter how many engineers you employ, there is only one monthly consolidated invoice.

How to hire with Upstaff

Talk to Our Talent Expert

Our journey starts with a 30-min discovery call to explore your project challenges, technical needs and team diversity.

Meet Carefully Matched Talents

Within 1-3 days, we’ll share profiles and connect you with the right talents for your project. Schedule a call to meet engineers in person.

Validate Your Choice

Bring new talent on board with a trial period to confirm you hire the right one. There are no termination fees or hidden costs.

Trusted by Businesses

Upstaff operates as a partner, not just an agency. Express that they aim for long-term cooperation and are dedicated to fulfilling client requirements, whether it’s a short one-month project or a more extended collaboration.

Trusted by People - Testimonials and Reviews

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.

Case Studies

Ready to hire trusted and vetted
Solidity developers?

All developers and available for an interview. Let’s discuss your project.

Book a Call

FAQs about Solidity Development: An Object-Oriented Programming Language

What is Solidity, and why is it important for blockchain?

Solidity is a high-level programming language designed for writing smart contracts on the Ethereum blockchain. Its importance lies in enabling developers to create secure, automated, and transparent applications like DeFi protocols, NFTs, and DAOs, driving innovation in decentralized systems.

How to Hire a Solidity Developer to Rapidly Develop Your Blockchain Project

If you urgently need to hire solidity developers and resources for finding the right candidate are lacking, Upstaff is exactly the service you need. We approach the selection of Solidity developers professionally, tailored precisely to your needs. From placing the call to the completion of your task by a qualified developer, only a few days will pass.

Where is the Best Place to Find Solidity Developers with Flexible Engagement Models?

Undoubtedly, there are dozens, if not hundreds, of specialized services and platforms on the network for finding the right Solidity engineer. At Upstaff, we will recommend engineers with the mindset and experience relevant to your project challenges. We will interview, vet, and match solidity engineers to bring only the best candidates for the final round. This will save you time and bring your engineering team to a new level.

How Are Upstaff Solidity Developers Different? Offering Tailored Solutions for Your Blockchain Needs

AI tools and expert human reviewers in the vetting process are combined with a track record and historically collected feedback from clients and teammates. On average, we save over 50 hours for client teams in interviewing Solidity candidates for each job position. We are fueled by a passion for technical expertise, drawn from our deep understanding of the industry, making us the perfect partner when you need to hire solidity developers.

What are common Solidity developer interview questions?

When hiring a Solidity developer, expect questions like:

How do you optimize gas costs in a Solidity smart contract?
Can you explain the difference between ERC-20 and ERC-721 tokens?
How do you prevent common vulnerabilities like reentrancy attacks?
Describe your experience with Truffle or Hardhat for testing.
How would you integrate a dApp with a front-end using Web3.js?
Upstaff’s developers are pre-screened to excel in these technical areas.

Solidity vs. other blockchain languages: What’s the difference?

Solidity is tailored for Ethereum, excelling in smart contract development for DeFi and NFTs. Compared to Rust (used for Solana) or Vyper (a simpler Ethereum alternative), Solidity offers robust libraries and widespread adoption, making it ideal for Ethereum-based projects. Upstaff’s developers are versed in Solidity’s unique strengths.

What certifications should a Solidity developer have?

While formal Solidity certifications are rare, developers often hold credentials like Ethereum Developer Certification (e.g., ConsenSys Academy) or demonstrate expertise through portfolios and GitHub contributions. Upstaff ensures our developers have proven skills in Solidity and related tools.

How Quickly Can I Hire Solidity Developers Through Upstaff? Benefit from Strong Communication

Our journey starts with a 30-minute discovery call to explore your project challenges, technical needs, and team diversity. Meet Carefully Matched Solidity Talents. Within 1-3 days, we’ll share profiles and connect you with the right talents for your project. Schedule a call to meet engineers in person. Validate Your Choice. Bring a new Solidity developer on board with a trial period to confirm that you’ve hired the right one. There are no termination fees or hidden costs.

How Does Upstaff Vet Remote Solidity Engineers? Ensuring You Get Skilled Solidity Developers

Upstaff Managers conduct an introductory round with potential candidates to assess their soft skills. Additionally, the talent’s hard skills are evaluated through testing or verification by a qualified developer during a technical interview. The Upstaff Staffing Platform stores data on past and present Solidity candidates. Upstaff managers also assess talent and facilitate rapid work and scalability, offering clients valuable insights into their talent pipeline. Additionally, we have a matching system within the platform that operates in real-time, facilitating efficient pairing of candidates with suitable positions, making it easier than ever to hire solidity developers.

Hire Solidity Developer

Meet Upstaff’s Vetted Solidity Developers

Rogerio F.Senior Solidity Developer

SerhiiSolidity & Full-stack Web3 Engineer, Architect, Team-Lead.

TinaSolidity Smart Contract Developer

Sethu R.Blockchain/Solidity Engineer

Andrews R.Solidity Engineer, Product Manager

Luan P.Senior Go/Solidity Blockchain Engineer

Steven S.Go/Solidity Blockchain Engineer

Martin C.Expert Rust/Solidity Smart Contract Blockchain Developer

Let’s set up a call to address your requirements and set up an account.

Solidity Developers Tech Radar

Talk to Our Expert

Hiring a Solidity Developers? Then You Should Know What Certified Solidity Professionals Bring to the Table!

Why Hire a Solidity Developer?

What Does a Solidity Developer Do?

Why Choose Upstaff to Hire Solidity Developers?

TOP instruments, IDEs, libs and resources of a Solidity Developer

Development Frameworks

Testing Tools

Deployment and Interaction Libraries

Static Analysis and Security Tools

Blockchain Development Tools

Development Environments and IDEs

Explorers and Debugging Tools

Versioning and Dependency Management

Additional Tools and Services

Learning and Documentation

Talk to Our Expert

Why Upstaff

Interview First Engineers

Faster Talent Acquisition

Security And Vetting-First

Save Time For Deep Vetting

Custom Engagement Models

Unique Talent Ecosystem

No Hidden Costs

One Consolidated Invoice

How to hire with Upstaff

Trusted by Businesses

Case Studies

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

Upstaff builds AI-Driven Data Platform for Environmental Organizations

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

Decentralized Software and Blockchain Ecosystem:

Ready to hire trusted and vetted Solidity developers?

FAQs about Solidity Development: An Object-Oriented Programming Language

What is Solidity, and why is it important for blockchain?

How to Hire a Solidity Developer to Rapidly Develop Your Blockchain Project

Where is the Best Place to Find Solidity Developers with Flexible Engagement Models?

How Are Upstaff Solidity Developers Different? Offering Tailored Solutions for Your Blockchain Needs

What are common Solidity developer interview questions?

Solidity vs. other blockchain languages: What’s the difference?

What certifications should a Solidity developer have?

How Quickly Can I Hire Solidity Developers Through Upstaff? Benefit from Strong Communication

How Does Upstaff Vet Remote Solidity Engineers? Ensuring You Get Skilled Solidity Developers

Ready to hire trusted and vetted
Solidity developers?