> Markdown version of [/jobs/ext/2661718-blockchain-developer](https://www.wearedevelopers.com/jobs/ext/2661718-blockchain-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Blockchain Developer - **Company:** Key Infotek Llc - **Location:** Jersey City, NJ, United States - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Collaborative Software, DevOps, Digital Signature, Enterprise Architecture Framework, Key Management, Node.Js, Public Key Infrastructure, Queueing Systems, RabbitMQ, Blockchain, Software Engineering, Backend, Event Driven Architecture, Hyperledger, Containerization, Kubernetes, Information Technology, Solidity, Apache Kafka, Web3.js, Asynchronous Programming, Docker - **Published:** August 31, 2026 - **Apply:** https://www.dice.com/job-detail/ef48b460-5297-4f4f-a03f-1278e7ad8698 ## About the Role * Bachelor's degree in Computer Science, Engineering, or a related discipline; MS is a plus * 8+ years of overall software engineering experience, with a strong backend development foundation * 2 to 4 years of hands-on experience in Web3 and blockchain application development, including smart contract development and blockchain protocol integration * 3 to 5 years of experience with backend development using Java/Spring, Node.js, or equivalent enterprise frameworks * Proficiency in Solidity smart contract development, including testing frameworks (Hardhat, Foundry, Truffle) and security best practices * Hands-on experience with Web3 libraries such as Web3J, Web3JS, Ethers.js, or Viem * Solid understanding of blockchain fundamentals consensus mechanisms, transaction lifecycle, gas models, wallet infrastructure, and key management * Experience with token standards (ERC-20, ERC-721, ERC-1155, ERC-3525, or equivalent) and tokenization patterns * Familiarity with permissioned blockchain networks (Hyperledger Besu, Fabric, Corda, or R3) is a strong plus * Experience with asynchronous programming, event-driven systems, and message queuing (Kafka, RabbitMQ, or equivalent) * Familiarity with DevOps practices, containerization (Docker, Kubernetes), and CI/CD pipelines * Understanding of cryptographic concepts digital signatures, hashing, PKI, and secure key management as applied to blockchain systems * Exposure to Layer 2 scaling solutions (Polygon, Optimism, zkSync, etc.) and cross-chain interoperability protocols is a plus * Experience in financial services or regulated industries is a plus * Familiarity with Agile/Scrum methodologies and distributed team collaboration tools ## Related Videos - [Smart Contract fundamentals - My first DApp](https://www.wearedevelopers.com/videos/52-smart-contract-fundamentals-my-first-dapp) - [Future-Proofing FinTech With Blockchain Technology](https://www.wearedevelopers.com/videos/808-future-proofing-fintech-with-blockchain-technology) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) - [DevOps Maturity Check – a way to balance autonomy and alignment](https://www.wearedevelopers.com/videos/58-devops-maturity-check-a-way-to-balance-autonomy-and-alignment) ## Related Articles - [7 tips on how to become a blockchain developer](https://www.wearedevelopers.com/magazine/53-7-tips-on-how-to-become-a-blockchain-developer) - [Why Blockchain? A Developer’s Perspective](https://www.wearedevelopers.com/magazine/616-why-blockchain-a-developer-s-perspective) - [From Hype to Code: Real Blockchain Use Cases for Developers](https://www.wearedevelopers.com/magazine/620-from-hype-to-code-real-blockchain-use-cases-for-developers) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer)