Web3 Fullstack Engineer
Xsolla (USA), Inc., operating under the Xsolla brand, is a global video game commerce and payments company serving game developers, publishers, creators, and payment providers.
Maintainer signals as of 9/25/2026
Projects
About Xsolla (USA), Inc.
Xsolla provides merchant-of-record and payment-processing services plus direct-to-consumer commerce, web shops, publishing and distribution tools, cloud gaming, fraud prevention, player engagement, creator monetization, and developer tooling for the video game industry. Its solutions operate across 200+ geographies with 1,000+ payment methods and are actively supported through live products, documentation, customer support, and ongoing hiring.
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.
