Job Description
We are building a Web3 financial application targeting real users. The core responsibility of this role is to integrate, invoke, and orchestrate existing on-chain smart contracts and data with high quality, ensuring stable and secure connectivity to backend systems and mobile products. You will be responsible for transforming complex on-chain capabilities into usable, reliable, and scalable application-level functionalities.
Work Approach
- Engineering pragmatism with a focus on feasibility
- Emphasis on stability, security, and user experience
- Ability to drive progress autonomously under ambiguous requirements
- Skilled at abstracting complex systems into reusable modules
- Proficient in using AI tools to enhance efficiency
- Capable of delivering high-quality work rapidly
Key Responsibilities
- Wallet & Account Integration: Implement chain abstraction, account abstraction, and gasless solutions.
- User-Friendly Wallet Creation: Enable Web2 methods (e.g., Passkeys, biometrics, social accounts) while ensuring non-custodial security.
- Session Layer: Manage Auth Tokens and Session Keys to facilitate instant transactions without frequent signature requests.
- Multi-Chain Aggregation: Support EVM, Solana, and other ecosystems.
- Smart Contract Integration: Architect backend services interacting with multiple ecosystems (EVM standards like ERC-20/ERC-4337, Solana SPL Tokens, Token-2022).
- Transaction Lifecycle: Handle building, signing, sending, confirming, and retrying failed transactions.
- Cross-Chain Monitoring: Develop services integrating RPCs, handling delays, reorgs, and gas estimation.
- Indexer Maintenance: Manage Base and Solana testnet/mainnet indexers.
- Future Transaction Support: Adapt to emerging transaction types.
- GraphQL Integration: Provide client-friendly access to transaction data.
Job Requirements
- Proven experience in Web3 backend development
- Deep understanding of EVM and Solana ecosystems
- Expertise in wallet SDKs and third-party protocol integration
- Strong problem-solving skills in blockchain edge cases
- Ability to design resilient distributed systems
Benefits
Why join us? - Focus on real-user products, not "concept chains" - Deep involvement in Web3 application architecture - High impact on product experience and system reliability - Small team with high ownership and low bureaucracy - Competitive compensation with long-term incentives Interested? Let's talk. Share your GitHub/portfolio and describe the most challenging third-party protocol or wallet SDK you've integrated.
