Senior Blockchain Engineer

About the role

This role focuses on developing an enterprise cryptocurrency wallet that uses Multi-Party Computation (MPC) and Threshold Signature Scheme (TSS) for secure asset custody. You will be responsible for implementing MPC protocols in Golang to enable private key sharding and distributed signature services, alongside managing the entire key lifecycle from generation to recovery. The work involves ensuring the wallet's security through 2/3 threshold signature distribution.

A key part of the position includes integrating the wallet with various blockchain networks, such as Bitcoin, XRP, Solana, and EVM-compatible chains. You will also implement interfaces for hardware wallets like Ledger and Trezor, and integrate Hardware Security Modules (HSM) for enhanced security. The role extends to developing internal and external APIs for wallet operations, transaction signing, and exposing data to frontend services.

Success in this role means architecting scalable and secure microservice architectures for MPC wallet operations. This includes optimizing high-performance data pipelines and real-time event processing systems, while consistently applying security best practices across all development. Your contributions will directly impact the institutional-grade security and multi-chain functionality of the enterprise wallet.

The annual salary for this position ranges from $150,000 to $180,000.

Skills that matter here

• Golang: This role requires developing MPC protocols, key lifecycle management, and API services primarily using Golang.
• MPC: You will design and implement Multi-Party Computation protocols for private key sharding and distributed signature services.
• TSS: The position involves implementing Threshold Signature Scheme algorithms for 2/3 signature distribution within the wallet.
• Elliptic Curve Cryptography: A strong understanding of ECC is necessary for implementing and securing cryptographic operations within the wallet.
• Zero-Knowledge Proofs: Knowledge of Zero-Knowledge Proofs is required for developing advanced security features.
• Docker: Proficiency with Docker is needed for managing and deploying cloud-native applications within the microservice architecture.

Who this role suits

• A developer with at least five years of backend experience, including three years specifically in Golang.
• Someone who has a deep understanding of MPC/TSS technology and has developed production systems using these.
• An individual with strong knowledge of cryptography, including Elliptic Curve Cryptography and Zero-Knowledge Proofs.
• A professional experienced in developing high-security systems within financial, payments, or cryptocurrency sectors.

From the employer

Key Responsibilities

• MPC/TSS Wallet Development
• MPC Protocol Implementation: Design and implement MPC (Multi-Party Computation) protocols in Golang to build highly available private key sharding and distributed signature services
• Key Lifecycle Management: Develop secure end-to-end key lifecycle management systems including key generation, storage, recovery, and destruction
• Threshold Signature Scheme (TSS): Implement TSS algorithms and secure multi-party computation protocols for 2/3 signature distribution
• Multi-chain Integration: Build integration layers for multiple blockchain networks including Bitcoin (BTC), XRP, Solana (SOL), EVM-compatible chains (ETH, BNB, AVAX, ARB, POL), and TRON
• Hardware Security: Integrate HSM (Hardware Security Module) solutions (YubiHSM, AWS CloudHSM, Azure Dedicated HSM) for enhanced security
• API Development
• Internal APIs: Build and maintain internal APIs to expose pool data, routing results, and token balances to frontend services
• Wallet APIs: Develop secure APIs for wallet operations, transaction signing, and blockchain interactions
• Hardware Wallet Integration: Implement interfaces for Ledger and Trezor hardware wallet integration
• System Architecture
• Microservices Design: Architect scalable, secure microservice architecture supporting MPC wallet operations
• Performance Optimization: Optimize high-performance data pipelines and real-time event processing systems
• Security Implementation: Implement security best practices across all wallet and trading operations

Requirements

• Experience: 5+ years of backend development experience, with 3+ years focused on Golang development
• MPC/TSS Expertise: Deep understanding of MPC/TSS technology stack with actual production system development experience
• Cryptography: Strong knowledge of Elliptic Curve Cryptography (ECC), Zero-Knowledge Proofs, and Threshold Signature schemes
• Blockchain Protocol Experience: Extensive experience in blockchain protocol layer development, familiar with at least Ethereum, Bitcoin, and Solana mainstream public chains
• Security Systems: Development experience in high-security systems (financial, payments, cryptocurrency)
• Cloud Native: Proficiency with Docker, Kubernetes, and CI/CD cloud-native technology stacks
• System Design: Excellent system design capabilities with experience designing scalable microservice architectures
• Data Pipelines: Experience building high-performance data pipelines and real-time event processing systems

Preferred Qualifications

• Wallet & Custody Experience:
• Practical development experience with digital wallets, exchanges, or custody services
• Familiarity with BIP-32, BIP-39, BIP-44 wallet standards
• Open Source & Community:
• Contributions to open-source blockchain projects (Cosmos SDK, Ethereum clients, etc.)
• Active participation in blockchain developer communities
• Advanced Technical Skills:
• Experience with zk-SNARKs, zk-STARKs, or other zero-knowledge proof systems
• Knowledge of cross-chain bridges and interoperability protocols
• Familiarity with FHE (Fully Homomorphic Encryption) or advanced cryptographic primitives
• Security Certifications:
• Cryptography or blockchain security certifications
• Experience with security audits and vulnerability assessments