Cross Chain DeFi Routing Architecture Lead

About the project

I’m ready to move our hybrid DeFi infrastructure from concept to production and need a senior architect who can own the full cross-chain routing stack end-to-end. The core networks in scope are Base (EVM), Solana (SVM) and Sui (Move). On top of that, the platform must expose ERC-4337 account-abstraction rails so we can offer completely gas-free user flows. Key functional pillars • Biometric onboarding through WebAuthn so retail users glide straight from KYC into non-custodial wallets. • True gasless execution driven by ERC-4337 paymaster flows. • Hardware middleware automation via CEN/XFS drivers to let ATMs, kiosks and embedded banking devices push transactions directly into our rails. I already run an AI-native development environment (Cursor, Copilot, GPT-powered test generation) and expect you to orchestrate these agents rather than rely on traditional manual loops. Formal verification, differential fuzzing and static-analysis gates need to run automatically on every commit. What you will hand over 1. A modular routing engine that detects the cheapest path across Base, Solana and Sui in real time and executes atomically. 2. Smart-contract libraries (Move & Solidity) formally verified, with proofs or audit artefacts. 3. A biometric onboarding micro-service that speaks WebAuthn and mints ERC-4337 accounts on demand. 4. CEN/XFS middleware service bridging hardware events to the routing engine. 5. CI/CD pipeline scripts plus IaC for rapid redeploy to our Kubernetes cluster. 6. Complete test coverage: unit, integration, property-based and load tests showing 1 000 TPS at <300 ms median latency. Code quality, provable security and clear documentation are non-negotiable. If you thrive in a high-velocity, AI-assisted workflow and can ship production-grade systems that scale globally, let’s talk deliverables and timelines. Candidates must demonstrate master-level proficiency in the following precise technological frameworks:1. Smart Contract & Core Ledger DevelopmentEVM Chains: Advanced Solidity and low-level Yul Assembly (explicitly required for memory-allocation gas optimization inside our Paymaster contracts).SVM Chains: Rust paired with the Solana Anchor framework (optimized for high-performance, parallel transaction architectures).Move Chains: Move Language natively tailored for the Sui Network (leveraging object-based data structures for parallel computation).Development Frameworks: Foundry, Hardhat, and Solana CLI tools.2. Cryptographic Authentication & Account Abstraction LayerERC-4337 Architecture: Proven deployment of custom smart accounts, alternative mempool validation loops, EntryPoint contracts, and gas-sponsoring Paymaster contracts.AA Toolkits: ZeroDev Kernel, Biconomy SDK, and UserOperation bundler integration frameworks.Keyless Onboarding Engine: Comprehensive integration of the WebAuthn API to interface with device-level physical security chips (Secure Enclave on iOS, TEE on Android). Native integration of Turnkey SDK or Capsule SDK for secp256r1 elliptic curve key orchestration.3. High-Velocity Payment Middleware & Cross-Chain ClearingCross-Chain Interoperability: Hands-on integration of Circle’s Cross-Chain Transfer Protocol (CCTP) APIs to handle programmable, instant minting and burning of stablecoins (USDC/EURC) directly on-chain.Transaction Surveillance: Live integration of Chainalysis KYT (Know Your Transaction) APIs and automated mempool transaction parsing webhooks.4. Hardware Edge Middleware & Simulation AutomationATM/Kiosk Integration: Experience or working knowledge of the international banking CEN/XFS 3.0 driver standard protocol to control automated currency deposit cassettes and security document printers.Biometrics Integration: FaceTec 3D Face Verification SDK and infrared device camera driver hooks.5. AI-Native Tooling & Cybersecurity AuditingAI Code Acceleration: Absolute fluency in Cursor IDE, GitHub Copilot Enterprise context indexing, and prompt engineering protocols.Autonomous Security Testing: Deep experience configuring automated static analysis and fuzzing agents via Slither, Echidna, Mythril, and CertiK Skyfall/Foundry formal verification suites.Simulation Environments: Experience mapping multi-agent synthetic user networks via LangGraph or CrewAI to execute pre-launch stress-testing.

Skills required