Web3 Fullstack Engineer
Xsolla is a global video game commerce company providing tools and services to launch, monetize, and scale games. Its offerings include payments, web shops, publishing, distribution, LiveOps, anti-fraud, subscriptions, SDKs, and creator solutions for developers, publishers, payment providers, creators, and other gaming businesses.
Maintainer signals as of 8/23/2026
Projects
About Xsolla (USA), Inc.
Xsolla operates as a global merchant of record and video game commerce platform serving developers, publishers, resellers, payment providers, creators, and retailers. It provides payment processing across more than 200 countries and regions, 1,000+ payment methods, and 130+ currencies, alongside tax management, compliance, fraud prevention, refunds, dispute management, and end-user support. Its product portfolio includes Web Shop, Publishing Suite, Payments, Xsolla Pay, Mobile Buy Button, SDKs, Subscriptions, game distribution, Partner Network, Offerwall, LiveOps, Anti-Fraud, Login, Site Builder, cloud gaming, and related gaming commerce tools.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will build end-to-end features across wallet-connected frontends, backend services, smart contracts, and indexing systems. You will design reliable flows for digital-item ownership, transfers, trading, redemption, and fiat-to-crypto interactions. You will model items and ownership across on-chain and off-chain systems, integrate EVM chains and marketplaces, and ensure value-moving operations are safe, auditable, idempotent, and recoverable.
Requirements
- Experience integrating traditional systems with on-chain systems, including wallet onboarding, custodial and non-custodial wallets, account abstraction, and gasless transactions.
- Working knowledge of EVM chains and Solidity.
- Understanding of ERC-20, ERC-721, and ERC-1155 token standards.
- Experience synchronizing blockchain state with off-chain databases, including indexing, event ingestion, reorganization handling, and reconciliation.
- Strong TypeScript and React skills.
- Experience with wallet connectivity and web3 client libraries.
- Backend skills in Node.js and Go.
- Experience with distributed systems and value-transfer correctness.
- PostgreSQL schema design, query optimization, and migrations.
- Experience deploying, operating, and debugging services in Kubernetes.
- Experience with Kafka or NATS and event-driven messaging patterns.
- Knowledge of Git and modern CI/CD practices.
- Gaming-industry platform experience involving game items, economies, or ownership.
Responsibilities
- Build seamless Web2-to-Web3 integration flows for accounts, payments, wallets, account abstraction, gasless transactions, and fiat on-ramps.
- Build systems for digital-item minting, ownership, transfer, trading, and redemption.
- Develop end-to-end features across frontends, backend services, smart contracts, and indexing layers.
- Design data models and APIs for items and ownership across off-chain systems, custodial wallets, and blockchains.
- Ensure value flows are reliable through idempotency, reconciliation, replay safety, and recovery paths.
- Integrate EVM chains, token standards, indexers, marketplaces, and settlement flows.
- Collaborate with product, security, payments, and game-facing teams to create technical plans and document decisions.
