Java Jobs in Web3

Please read the job description carefully before applying.

• Engagement Type: W2 only (No C2C / No C2H)
• Candidates must be authorized to work in the U.S. on W2

Professional references and work authorization verification will be requested during later stages of the interview process, if shortlisted.

Interested and qualified candidates are encouraged to apply

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Senior Blockchain Developer (5–6+ Years Experience)

Location: Manassas, VA (Hybrid)

Duration: 12 Months

Job Type: Contract (Hybrid)

Employment: W2 only (No C2C / No C2H)

Visa: Any except OPT EAD | H1B Transfers allowed

Job Overview

We are looking for a Senior Blockchain Developer with a minimum of 5–6 years of hands-on experience in designing and delivering enterprise-grade blockchain and distributed ledger solutions. The ideal candidate has deep expertise in smart contracts, cloud-based deployments, secure architectures, and scalable financial systems.

Key Responsibilities

• Design, develop, and maintain blockchain applications and smart contracts using Solidity, Python, Java, TypeScript, JSON, and REST APIs
• Build and deploy DLT-based applications across EVM and non-EVM platforms
• Implement cryptographic security mechanisms for secure transactions and data integrity
• Develop and optimize blockchain protocols, consensus mechanisms, and privacy infrastructure
• Create and maintain technical and architectural documentation
• Support test setup, QA, UAT, and Production deployments
• Deploy and manage blockchain solutions on AWS
• Build and maintain CI/CD pipelines and containerized deployments
• Collaborate with cross-functional teams to deliver scalable and secure solutions

Mandatory Skills & Experience (5–6+ Years Required)

• Overall Blockchain / DLT Experience: 5–6+ years
• AWS Cloud Deployments: 5+ years
• Smart Contracts & Solidity: 5+ years
• Python: 5+ years
• TypeScript: Hands-on experience
• Java: Hands-on experience
• CI/CD Pipelines: Strong hands-on experience
• Containerization: Docker, Kubernetes, or similar

Technical Skill Set

• Blockchain: EVM & non-EVM chains, Smart Contracts, Privacy Infrastructure
• Programming: Solidity, Python, Java, TypeScript
• Cloud & DevOps: AWS, CI/CD, Docker, Kubernetes
• Security: Cryptography, digital signatures, secure transaction handling
• APIs & Integration: REST APIs, JSON
• Testing & Support: QA, UAT, Production support

Preferred Qualifications

• Experience with financial services or high-throughput transaction systems
• Knowledge of blockchain security audits, compliance, and governance
• Strong communication and documentation skills
• Experience working in hybrid or enterprise environments