Job Description
Position: Blockchain / Protocol Engineer
Location: Iselin NJ
Duration: Contract
Job ID: 177733
Only W2
Are you passionate about blockchain protocols, distributed systems, and applied cryptography? We are seeking a Lead Protocol Engineer to help build a cutting-edge Digital Asset Platform focused on solving one of the biggest challenges in institutional finance-delivering regulatory compliance while preserving transaction confidentiality.
This role sits at the intersection of cryptography, blockchain infrastructure, and high-performance distributed systems, offering the opportunity to design and develop core protocol components from the ground up.
Key Responsibilities Core Protocol Development - Architect and develop a custom blockchain application using Go (Golang), Cosmos SDK, and CometBFT (Tendermint).
- Design scalable and secure protocol components for institutional-grade digital asset settlement.
Cryptographic Engineering - Implement and optimize privacy-preserving cryptographic primitives including:
- Pedersen Commitments
- Bulletproofs (Range Proofs)
- Ensure cryptographic solutions operate without requiring a trusted setup.
Consensus & Distributed Systems - Develop custom ABCI++ extensions including:
- Prepare Proposal
- Vote Extensions
- Build and support an on-chain Multi-Party Computation (MPC) mixing network.
State Machine Design - Design and maintain custom KVStore state machines.
- Manage homomorphically encrypted balances using Elliptic Curve cryptography rather than traditional plaintext accounting models.
Performance Optimization - Optimize cryptographic operations such as:
- Scalar multiplication
- Point addition
- Improve throughput, latency, and scalability across distributed environments.
Regulatory Auditing Infrastructure - Develop secure off-chain query layers.
- Implement \"view key\" mechanisms enabling permissioned regulatory oversight while maintaining privacy.
Required Qualifications: - 5+ years of Software Engineering experience.
- 3+ years of backend or systems programming experience.
- Expert-level proficiency in Go (Golang).
- 1+ year of experience building reliable distributed systems.
Experience with: - BFT Consensus Algorithms
- P2P Networking
- State Replication
- 6+ months of hands-on experience with Elliptic Curve Cryptography (ECC).
- Strong understanding of distributed architecture, performance optimization, and systems design.
Ideal Candidate: - Deep interest in blockchain protocol development.
- Experience building low-level distributed systems.
- Strong understanding of applied cryptography and privacy-preserving technologies.
- Ability to translate mathematical concepts into production-grade software.
- Comfortable operating in highly complex, research-driven engineering environments.
Preferred Experience: - Cosmos SDK
- CometBFT / Tendermint
- Blockchain protocol engineering
- MPC (Multi-Party Computation)
- Zero-Knowledge Proofs (ZKP)
- Cryptographic protocol implementation
- Financial services, digital assets, or fintech platforms
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