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Senior Blockchain Developer

TALENDICA United State
Visa Sponsorship
This Job is No Longer Active This position is no longer accepting applications
AI Summary

Lead blockchain application development, smart contract creation, and protocol integration. Leverage Java/Spring, Node.js, and Web3 libraries. Minimum 8 years of software engineering experience required.

Key Highlights
8+ years of software engineering experience
2-4 years of Web3 and blockchain development
3-5 years of backend development using Java/Spring or Node.js
Key Responsibilities
Develop and maintain blockchain applications and smart contracts
Integrate blockchain protocols and Web3 libraries
Collaborate with cross-functional teams using Agile/Scrum methodologies
Technical Skills Required
Java/Spring Node.js Solidity
Benefits & Perks
Visa sponsorship (USC/GC only)
Nice to Have
Experience with permissioned blockchain networks (Hyperledger, Corda, R3)
Exposure to Layer 2 scaling solutions and cross-chain interoperability

Job Description


Role: Blockchain Developer

Job Location: NYC, NY/ Jersey City, NJ

Duration: FTE

Visa Type:- Only USC/GC


Qualifications / Experience

· 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



Thanks & Regards,


Alok Kumar | TALENDICA

Sr. Technical Recruiter


44 Saratoga Lane, Monroe Township, NJ 08831


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