BITFIT LABS PTE LTD

Senior Blockchain Engineer

9.0/10

BITFIT LABS PTE LTD

$150,000 – $180,000 USD
Remote
senior
29 days ago
cryptoweb3GolangMPCTSSElliptic Curve CryptographyZero-Knowledge ProofsDockerKubernetesCI/CD

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Description

About BitFit Labs

We are building enterprise cryptocurrency wallet powered by advanced Multi-Party Computation (MPC) Threshold Signature Scheme (TSS). This solution provides institutional-grade security for asset custody through distributed key management technology. Core Features

  • β€’Signature Scheme: 2/3 threshold signature distribution
  • β€’Multi-chain Support: Bitcoin (BTC), XRP, Solana (SOL), EVM-compatible chains (Ethereum, BNB Chain, Avalanche, Arbitrum, Polygon, etc.), TRON
  • β€’Hardware Integration: Support for Ledger and Trezor hardware wallets
  • β€’Secure Key Management: TSS nodes distributed across isolated environments with HSM integration

Key Responsibilities

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

Preferred Qualifications

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

Requirements

Requirements

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