Team Lead Web3

Xsolla is a global commerce company that provides tools and services to help video game developers fund, distribute, market, and monetize their games. It operates as a merchant of record and supports game developers around the world.

• Architect Web3 backend systems using ZK Stack infrastructure and ERC-4337 Account Abstraction primitives
• Define the technical strategy for the User Operation lifecycle, including bundler/paymaster integration and gas-sponsorship policies
• Lead ZK Stack / ZKsync Era integration decisions, including EraVM optimizations, native Account Abstraction, L1L2 bridging architecture, and system contract interactions
• Design session-key and permission primitives for prompt-free gameplay transactions
• Own signing and confirmation flows, including EIP-712, ERC-1271, Web Authn/passkey signers, and wallet-facing standards
• Oversee the smart contract interaction layer, including abigen code generation, factory dependencies, upgradeability, and migration patterns
• Review complex code for blockchain-specific edge cases, including reorg handling, transaction finality, and L2 gas estimation failures
• Identify systemic risks involving key management, signature phishing, and bundler/RPC dependencies, and lead initiatives to resolve them
• Improve blockchain observability through transaction tracking, event monitoring, and on-chain analytics
• Contribute hands-on to critical features involving multi-chain operations
• Lead and mentor a team of up to 8 backend engineers
• Conduct regular 1:1s, performance reviews, and career development conversations
• Hire and onboard new team members
• Foster technical excellence, collaboration, and continuous learning
• Manage team workload and maintain a sustainable delivery pace
• Own delivery predictability and sprint commitments
• Collaborate with Product to refine requirements and estimate work
• Report team progress, risks, and blockers to stakeholders
• Improve development processes and team efficiency
• Onboard and understand the codebase, architecture, and team dynamics
• Establish regular 1:1s and team rituals
• Deliver at least one significant feature or improvement in the first 3 months
• Improve delivery predictability and code quality metrics, address technical debt, and develop career growth plans for all team members within the first 6 months
• Ensure consistent, high-quality delivery, measurable improvements in system performance and reliability, and team member growth

• 5+ Years of commercial experience with Go, or 7+ years with other backend languages and Go proficiency
• Strong expertise in distributed systems and microservices architecture
• Deep knowledge of MongoDB, PostgreSQL, and Redis
• Experience with message queues, including NATS, RabbitMQ, or Kafka
• Understanding of API design, including REST, Web Socket, and gRPC
• Experience with Docker, Kubernetes, and CI/CD pipelines
• Blockchain development experience involving Ethereum/EVM smart contract interaction, transaction lifecycle, gas models, nonce management, and token standards
• Working knowledge of ERC-4337 Account Abstraction, including EntryPoint, User Operation lifecycle, bundler/paymaster roles, and gas estimation failure modes
• 2+ Years of experience leading engineering teams
• Track record of mentoring and developing engineers
• Experience with agile methodologies and sprint planning
• Strong communication skills with technical and non-technical stakeholders
• Ability to balance hands-on coding with management responsibilities
• Будет плюсом: ZK Stack / ZKsync Era experience;
  Account Abstraction and smart wallet experience; modular account standards and implementations such as Safe, Kernel, Biconomy, or Coinbase Smart Wallet; session keys and delegated permissions; signature schemes and wallet-facing standards; familiarity…