Solidity Developer

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  "location": {
    "raw": "Manassas, Virginia, United States",
    "city": "Manassas",
    "region": "VA",
    "country": "United States",
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  "workplace_type": "on_site",
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      "state": "Virginia",
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    "datePosted": "2026-03-09",
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    "description": "<p><span style=\"font-size: 12pt\"><a href=\"https://intellecteu.com/\" target=\"_blank\" rel=\"noopener noreferrer\">IntellectEU</a><span> is an international technology company focused on digital finance and emerging technologies. At IntellectEU we are on a mission to become the top-of-mind fintech company.  We are committed to our people and believe in building a better future with the newest technologies. We give rising talent and industry veterans the space to explore, launch ideas, and collaborate closely with our clients. With our technical hands-on experience in payments, blockchain and capital markets, there’s no challenge that’s left unsolved. Over the past two decades, we have earned our expertise in financial technology, executing on hundreds of complex integrations and co-creating new digital asset platforms alongside our clients. </span><br><br><span style=\"font-weight: bold\">Type of cooperation</span> - on-site, Manassas (Virginia) <br><br><span style=\"font-weight: bold\">Responsibilities:<br></span></span></p>\n<ul>\n<li><span style=\"font-size: 12pt\">Design, build, and deploy distributed ledger technology (DLT) solutions and smart contracts using Solidity, Java, and REST APIs.</span></li>\n<li><span style=\"font-size: 12pt\">Implement secure transaction logic using cryptographic techniques to protect digital assets and prevent unauthorized access.</span></li>\n<li><span style=\"font-size: 12pt\">Research, develop, and implement various blockchain protocols and consensus algorithms.</span></li>\n<li><span style=\"font-size: 12pt\">Collaborate with Product Owners and technical teams to gather requirements and define technical solutions.</span></li>\n<li><span style=\"font-size: 12pt\">Integrate blockchain solutions with enterprise systems, databases, and APIs.</span></li>\n<li><span style=\"font-size: 12pt\">Analyze and troubleshoot system performance, network issues, and blockchain transaction problems.</span></li>\n<li><span style=\"font-size: 12pt\">Develop documentation and technical specifications for blockchain implementations.</span></li>\n<li><span style=\"font-size: 12pt\">Contribute to continuous improvement, DevOps practices, and operational support.</span></li>\n<li><span style=\"font-size: 12pt\">Work with AWS deployment environments and infrastructure tools.</span><br><br></li>\n</ul>\n<p><span style=\"font-size: 12pt; font-weight: bold\">Requirements:</span></p>\n<p><span style=\"font-size: 12pt; font-weight: bold\">Must have<br></span></p>\n<ul>\n<li><span style=\"color: rgb(41, 42, 46); font-size: 12pt\">Bachelor’s or Master’s degree in information technology, computer science, engineering, or equivalent experience.</span><br></li>\n<li><span style=\"font-size: 12pt\">Solid foundation in smart contracts development and relevant technologies (Solidity, Typescript, Vyper etc).</span></li>\n<li><span style=\"font-size: 12pt\">Knowledge of smart contract dev tools/frameworks - foundry, hardhat, openzeppelin libraries (Upgradeable contracts, proxy patterns)</span></li>\n<li><span style=\"font-size: 12pt\">Knowledge of smart contract security aspects (re-entrance attack, Race conditions, Integer overflow/underflow, Denial of service, etc).</span></li>\n<li><span style=\"font-size: 12pt\">Experience with Solidity security testing tools like Slither, Mythril, and Echidna</span></li>\n<li><span style=\"font-size: 12pt\">Production experience with EVM-based blockchain applications.</span></li>\n<li><span style=\"font-size: 12pt\">Familiarity with basic cryptography and P2P networks.</span></li>\n<li><span style=\"font-size: 12pt\">Experience with web3.js or ether.js, and crypto wallets like MetaMask or MEW.</span></li>\n<li><span style=\"font-size: 12pt\">Understanding of RESTful web services design. </span></li>\n<li><span style=\"font-size: 12pt\">Understanding of the modern development ecosystem: Git, CI/CD, and automated testing.</span></li>\n</ul>\n<p><span style=\"font-size: 12pt; font-weight: bold\"><br></span></p>\n<ul></ul>\n<p><span style=\"font-size: 12pt; font-weight: bold\">Nice to have</span></p>\n<ul>\n<li><span style=\"font-size: 12pt\">Experience with Hyperledger Besu</span><br></li>\n<li><span style=\"font-size: 12pt\">Proficiency with databases such as MySQL, Oracle, and MongoDB.</span></li>\n<li><span style=\"font-size: 12pt\">Knowledge of Level 2 scaling technologies</span></li>\n<li><span style=\"font-size: 12pt\">Experience with implementing ERC20 and ERC721 or IERC1155 contracts.</span><br><br></li>\n</ul>\n<p><span style=\"font-size: 12pt; font-weight: bold\">We guarantee: </span></p>\n<ul>\n<li><span style=\"font-size: 12pt\">International experience in a stable company: the company has offices in Antwerp, Lisbon, Krakow, Kyiv, New York and operates on the market for over 15 years.</span></li>\n<li><span style=\"font-size: 12pt\">A passionate team in an innovative, casual, positive, and open work environment ready to meet your new ideas.</span></li>\n<li><span style=\"font-size: 12pt\">Great opportunities for personal and professional development as well as the chance to change the way the business works in the financial world.</span></li>\n</ul>\n<p><span style=\"font-size: 12pt\"><span style=\"font-size: 12pt; font-weight: bold\"><br>Join us to make an impact on the entire financial world!</span></span><br></p>\n<p><br><br></p>\n<p><span style=\"font-size: 12pt\"><span style=\"font-size: 8pt\"><span style=\"color: rgb(72, 65, 63)\">By submitting your application, you acknowledge that IntellectEU processes your personal data for recruitment purposes based on pre-contractual steps and legitimate interests. Your data may be shared with authorized personnel and service providers, including BambooHR, and transferred internationally with appropriate safeguards. We retain applicant data for up to 24 months unless otherwise required by law or requested for earlier deletion. For more details, see our </span><a href=\"https://www2.intellecteu.com/files/IntellectEU_General_Privacy_Policy.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Privacy Policy</a><span style=\"color: rgb(72, 65, 63)\">.</span></span></span></p>",
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    "minimumExperience": "Mid-level",
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