Staff-level infrastructure engineer focused on transaction execution systems, SDK architecture, and production reliability across EVM and Solana.
I build execution infrastructure that turns complex, failure-prone on-chain workflows into reliable product surfaces for users and developers.
- Website: peglerweb.services
- GitHub: @joepegler
- LinkedIn: joe-pegler
- Designed internal ERC-4337 orchestration architecture with parallel fee lookup, nonce handling, sponsorship, simulation, and execution paths to reduce latency versus provider-managed flows.
- Hardened sponsored and gasless execution with retries, simulation, fallback handling, ABI and Sourcify-backed error decoding, and structured operational errors.
- Unified multi-provider quote and execution routing across LiFi, Jupiter, 1inch, Odos, Mayan, LayerZero, and Relay behind one typed execution surface.
- Led SDK architecture for smart-account, quote, and transaction execution workflows used by frontend and backend teams.
- Architected Biconomy's flagship TypeScript SDK for smart accounts, modular clients, batching, signing, and multi-chain execution.
- Built and open-sourced Statecraft, a TypeScript-first Ethereum integration testing framework for deterministic scenario-based testing.
- ERC-4337 transaction orchestration and sponsorship infrastructure
- Simulation-first execution systems with retries and fallback logic
- Typed TypeScript SDKs for account abstraction and cross-chain workflows
- Reliability-focused backend infrastructure and operational debugging tooling
- Multi-provider routing systems across EVM and Solana
I design execution pipelines with simulation, retries, fallback handling, sponsorship flows, and typed operational errors so failures are predictable and debuggable in production.
I have implemented flows around EIP-712, EIP-1271, ERC-6492-style compatibility, Safe integrations, and passkey/P-256-related signing support.
I have built integration layers across LiFi, Jupiter, 1inch, Odos, Mayan, LayerZero, and Relay behind cohesive typed interfaces.
Owned transaction infrastructure, sponsorship flows, execution reliability, and developer tooling for a unified cross-chain DeFi product.
Led the core developer SDK for smart accounts and multi-chain transaction execution.
Shipped core Ethereum dApp surfaces from early product stages through production with emphasis on execution UX and integration boundaries.
- Execution infrastructure (ERC-4337, bundlers, sponsorship, gasless flows, simulation, retries, fallback handling)
- SDK and developer platforms (TypeScript, viem, typed APIs, modular clients, error models)
- Smart accounts and signing (EIP-712, EIP-1271, ERC-6492, Safe, P-256, passkeys)
- Cross-chain execution (EVM, Solana, LiFi, Jupiter, 1inch, Odos, Mayan, LayerZero, Relay)
- Reliability and testing (Vitest, Bun, GitHub Actions, forked-state testing, structured debugging)
- Backend systems (Node.js, NestJS, PostgreSQL, Redis)
- Statecraft: composable scenario runtime for testing Ethereum apps and ERC-4337 flows in Vitest.
Open to full-time, long-term contract, or selective fractional work across protocol infrastructure, transaction execution, SDKs, reliability, and developer tooling.