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| Job Position | Company | Posted | Location | Salary | Tags |
|---|---|---|---|---|---|
Okx | Remote | $72k - $101k | |||
Sorare | Paris, France | $152k - $153k | |||
Sentient | United States | $126k - $159k | |||
Sentient | Singapore, Singapore | $68k - $75k | |||
Sentient | United States | $105k - $157k | |||
RWA.xyz | New York, NY, United States | $130k - $170k | |||
Phantom | United States | $200k - $250k | |||
P2P. org | New York, NY, United States |
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OpenSea | New York, NY, United States | $180k - $270k | |||
Launchpadtechnologiesinc | Remote | $106k - $110k | |||
Monad Foundation | United States | $36k - $90k | |||
Integra | Remote | $32k - $54k | |||
Integra | Remote | $21k - $52k | |||
Integra | Remote | $79k - $85k | |||
Kraken | United States | $110k - $176k |
1. About BitFit Labs
We are building enterprise cryptocurrency wallet that combines advanced Multi-Party Computation (MPC) Threshold Signature Scheme (TSS) with an integrated local DEX aggregation engine.
This hybrid solution provides institutional-grade security for asset custody while enabling seamless, low-latency token swaps without relying on third-party APIs.
Core Features:Â
- MPC TSS-based Wallet InfrastructureÂ
- Signature Scheme: 2/3 threshold signature distributionÂ
- Multi-chain Support: Bitcoin (BTC), XRP, Solana (SOL), EVM-compatibleÂ
- chains (Ethereum, BNB Chain, Avalanche, Arbitrum, Polygon, etc.), TRONÂ
- Hardware Integration: Support for Ledger and Trezor hardware walletsÂ
- Secure Key Management: TSS nodes distributed across isolatedÂ
- environments with HSM integrationÂ
- Local EVM DEX Aggregator EngineÂ
- Customized Geth Client: Modified Geth node with integrated DEX aggregator functionalityÂ
- On-chain Liquidity Indexing: Direct indexing of liquidity pools from multiple DEXs (Uniswap, SushiSwap, Curve, etc.)Â
- Local Swap Simulation: EVM-based swap simulation to calculate optimal routes, slippage, and pricingÂ
- Zero Third-Party Dependencies: All aggregation logic executed locally for privacy and reliabilityÂ
- Low-Latency Routing: Sub-second swap path discovery and execution
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2. Key Responsibilities
- MPC/TSS Wallet DevelopmentÂ
- MPC Protocol Implementation: Design and implement MPC (Multi-Party Computation) protocols in Golang to build highly available private key sharding and distributed signature servicesÂ
- Key Lifecycle Management: Develop secure end-to-end key lifecycle management systems including key generation, storage, recovery, and destructionÂ
- Threshold Signature Scheme (TSS): Implement TSS algorithms and secure multi-party computation protocols for 2/3 signature distributionÂ
- 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 TRONÂ
- Hardware Security: Integrate HSM (Hardware Security Module) solutions (YubiHSM, AWS CloudHSM, Azure Dedicated HSM) for enhanced securityÂ
- DEX Aggregator Engine DevelopmentÂ
- Custom Geth Development: Build and maintain a modified Geth client with integrated DEX aggregator functionality for local swap routingÂ
- Liquidity Pool Indexing: Develop on-chain data indexing pipelines to track liquidity pools from major DEX protocols (Uniswap V2/V3, Balancer, Curve, KyberSwap) directly from event logsÂ
- Pool State Management: Parse and decode DEX pool states including reserves, fees, and tick data via customized Geth RPC or direct state accessÂ
- Real-time Registry: Design and maintain a local pool registry that stays synchronized with the blockchain in real-timeÂ
- Reorg Handling: Implement robust logic to handle blockchain reorganizations with rollback and re-indexing capabilitiesÂ
- Swap Simulation: Collaborate on EVM simulation integration to test swap routes locally before executionÂ
- API Development
- Internal APIs: Build and maintain internal APIs to expose pool data, routing results, and token balances to frontend servicesÂ
- Wallet APIs: Develop secure APIs for wallet operations, transaction signing, and blockchain interactionsÂ
- Hardware Wallet Integration: Implement interfaces for Ledger and Trezor hardware wallet integrationÂ
- System ArchitectureÂ
- Microservices Design: Architect scalable, secure microservice architecture supporting both MPC wallet operations and DEX aggregationÂ
- Performance Optimization: Optimize high-performance data pipelines and real-time event processing systemsÂ
- Security Implementation: Implement security best practices across all wallet and trading operationsÂ
3. Requirements
- Experience: 5+ years of backend development experience, with 3+ years focused on Golang developmentÂ
- MPC/TSS Expertise: Deep understanding of MPC/TSS technology stack with actual production system development experienceÂ
- Cryptography: Strong knowledge of Elliptic Curve Cryptography (ECC), Zero-Knowledge Proofs, and Threshold Signature schemesÂ
- Blockchain Protocol Experience: Extensive experience in blockchain protocol layer development, familiar with at least Ethereum, Bitcoin, and Solana mainstream public chainsÂ
- Security Systems: Development experience in high-security systems (financial, payments, cryptocurrency)Â
- EVM Knowledge: Solid understanding of EVM, ABI encoding/decoding, and Ethereum event log parsing- Node Interaction: Experience interacting with Ethereum nodes (Geth, Erigon, or similar RPC clients)Â
- DEX Protocols: Familiarity with at least 2 major DEX protocols; Uniswap V2/V3 AMM math knowledge is requiredÂ
- Cloud Native: Proficiency with Docker, Kubernetes, and CI/CD cloud-native technology stacksÂ
- System Design: Excellent system design capabilities with experience designing scalable microservice architecturesÂ
- Data Pipelines: Experience building high-performance data pipelines and real- time event processing systems
4. Preferred QualificationsÂ
4. Preferred QualificationsÂ
- Wallet & Custody Experience:Â
- Practical development experience with digital wallets, exchanges, or custody servicesÂ
- Familiarity with BIP-32, BIP-39, BIP-44 wallet standardsÂ
- DeFi & Trading:Â
- Experience with MEV bots, arbitrage systems, or existing DEX aggregatorsÂ
- Knowledge of graph-based routing algorithms for optimal swap pathsÂ
- Familiarity with WebSocket subscriptions for real-time block/log streamingÂ
- Open Source & Community:Â
- Contributions to open-source blockchain projects (Cosmos SDK, Ethereum clients, etc.)Â
- Active participation in blockchain developer communitiesÂ
- Advanced Technical Skills:Â
- Experience with zk-SNARKs, zk-STARKs, or other zero-knowledge proof systems
- Knowledge of cross-chain bridges and interoperability protocolsÂ
- Familiarity with FHE (Fully Homomorphic Encryption) or advanced cryptographic primitivesÂ
- Security Certifications:Â
- Cryptography or blockchain security certificationsÂ
- Experience with security audits and vulnerability assessmentsÂ