Smart Contract/Solidity Developer
Job in
New York, New York County, New York, 10261, USA
Listed on 2026-06-22
Listing for:
Harris Allied
Full Time, Contract
position Listed on 2026-06-22
Job specializations:
-
Software Development
Blockchain / Web3, Software Engineer, Backend Developer, DevOps
Job Description & How to Apply Below
Financial Technology industry leader has an immediate need for a Blockchain/Smart Contract Developer to join their world class technology team in a full time role based in midtown Manhattan. The individual in this exciting role is responsible for the development of blockchain-based applications and decentralized applications (dApps), from smart contract design to intuitive and high-performing blockchain integration. In this hybrid role you will work on the end-to-end delivery of secure, scalable, and engaging products.
Expertise with blockchain technology (e.g., smart contracts, web3 integration), cloud platforms, tools and frameworks, and Solidity
, Python and Type Script or Java is required.
- 3+ years of experience in blockchain / smart contract software engineering
- Designing, writing and building secure smart contracts for Ethereum based applications/token standards like ERC
20, ERC
721, and ERC
1400 using Solidity along with third party interfaces and design patterns like Upgradeable Proxy Pattern - Evaluating and integrating with multiple blockchain protocols, including both EVM and non-EVM ecosystems (Avalanche, Solana, Hyperledger)
- Hands-on experience with tools/frameworks like Open Zeppelin, Hardhat, Foundry, ethers.js; including writing comprehensive and automated tests (unit, integration and fuzz)
- Integrating / bridging between blockchain/distributed ledgers and external components
- Proficiency in two or more of the following languages:
Java, Typescript, Python
- Designing, implementing, and supporting distributed blockchain-based enterprise solutions for regulated domains (financial/banking/asset management) with Solidity
. - Familiarity with Web3 ecosystems, DeFi, cross-chain interoperability, wallet integrations, layer 2 & scaling solutions
- Familiarity with AI coding tools is a plus
- Working knowledge of cloud platforms (Google Cloud, AWS) is a plus
- Experience in software engineering with large and diverse codebase
- Excellent writing and communication skills
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