7 hours ago
Responsibilities
- Own features end to end across backend, frontend, smart-contract integrations, and production operations.
- Design and justify on-chain/off-chain architecture and maintain consistency between contracts and services.
- Build Go and TypeScript backend services for chain indexing, transaction relaying, event processing, APIs, SDKs, and in-game asset tokenization.
- Build React dApp frontends with wallet connection, transaction signing, and on-chain state management.
- Integrate smart wallets, accounts, paymasters, and bundlers into products.
- Develop SDKs for game studios and partners.
- Monitor services and contracts, diagnose production incidents, participate in on-call, and review code.
- Set up and maintain repository AI tooling using Claude Code, Codex, and Cursor.
Requirements
- 5+ years of commercial software development experience with senior-level production experience across backend and frontend.
- Experience shipping and maintaining production dApps.
- Production experience with viem, wagmi, Go, TypeScript, Node.js, React, PostgreSQL, Redis, and event-driven messaging systems such as Kafka, RabbitMQ, or NATS.
- Understanding of wallet signers, EOAs, browser and embedded wallets, smart accounts, personal_sign, EIP-191, EIP-712, EIP-1193, network switching, UserOperations, paymasters, and ERC-1271.
- Ability to integrate with and review Solidity contracts and understand EVM storage, gas, call semantics, proxy upgrades, access control, and common vulnerability classes.
- Experience with Docker, Kubernetes, Datadog, and production observability; Prometheus, Grafana, ELK, Graylog, or OpenTelemetry experience also counts.
- Experience designing REST and gRPC APIs, handling on-chain events and reorgs, and working with asynchronous messaging and event-driven systems.
- Experience with unit, integration, and end-to-end testing, Git, CI/CD, and daily hands-on use of Claude Code, Codex, or Cursor.
- Spoken English at B2 level or higher.
- Preferred experience includes zkSync/ZK Stack, Solidity and Foundry, ERC-4337, EIP-6963, EIP-5792, DeFi, NFTs, L2 infrastructure, SDK design, or gaming.
Tech Stack
Apache KafkaDatadogDockerGitGitLab CI/CDGoGrafanaGrayloggRPCKubernetesNode.jsPostgreSQLPrometheusRabbitMQReactRedisSolidityTypeScript
Categories
About Xsolla
Xsolla builds commerce and monetization infrastructure for video games, offering payment processing, merchant-of-record services, storefronts, subscriptions, and anti-fraud tools for developers and publishers. The privately held company, founded in 2005 and headquartered in Sherman Oaks, California, supports direct-to-consumer sales and global tax/compliance across many regions and payment methods. Its platform targets studios from indie to AAA and powers distribution, marketing, and in-game purchases.