Xsolla
games industry
PrincipalEngineer—DevX&AI
Neural analysis suggests this role is
optimal for Lead candidates.
“Principal Engineer — DevX & AI at Xsolla. Skills: architectural ownership of agent-readable Shop Builder platform, designing and shipping public APIs and SDKs, building CLI tooling and local developer workflows, understanding of Model Context Protocol (MCP) or equivalent agentic tool-use interfaces, building systems at global scale on cloud infrastructure, writing and reasoning about LLM-friendly documentation and API surfaces. Own the technical architecture of the agent-readable Shop Builder pl”
What You'll Achieve.
decisions you make here — which surfaces to expose, which formats to support, which standards to set — will bind the platform for years; define how developers and AI agents interact with Shop Builder's foundational capabilities; measures whether an LLM-generated block, theme, or layout is correct before it ships
Industry & Context.
background check that may include: Criminal history check, Employment verification, Education verification
What They're Looking For.
Must Have
10+ years of professional engineering experience, demonstrated track record as a Staff or Principal engineer who has shaped platforms, APIs, or developer tooling used by external builders, Deep expertise in designing and shipping public APIs and SDKs, including versioning strategy, backwards compatibility, and developer ergonomics, Expert-level proficiency in JavaScript/TypeScript and React, Hands-on experience building CLI tooling and local developer workflows (scaffolding, hot reload, file-based config, deploy commands), Solid understanding of the Model Context Protocol (MCP) or equivalent agentic tool-use interfaces, and practical experience building tools that AI agents can reliably invoke, Experience building systems at global scale on cloud infrastructure (AWS or GCP), with deep knowledge of containerization, CI/CD, and infrastructure-as-code, Ability to write and reason about LLM-friendly documentation and API surfaces, Exceptional technical communication
Nice to Have
Prior experience in game tech, digital commerce, or storefront platforms, Experience building platforms where AI agents are a first-class user, Familiarity with Figma's plugin/component API, design token standards, and design-to-code pipelines, Contributions to open-source developer tooling, SDK frameworks, or API standards, Background in block or extension marketplace design, Published technical writing, conference talks, or influential community presence in developer tooling or AI-native development
What You'll Do.
Own the technical architecture of the agent-readable Shop Builder platform
Define the interface contracts that LLMs and developers interact with
Design and lead delivery of the MCP server
Architect the CLI and local development environment
and rollback model for developer-published content
Design the sandbox and preview environment system
Set the documentation standard
Lead the eval harness architecture
Collaborate with Principal/Staff Engineers across payments
Serve as the technical bar-raiser for the team
Contribute to hiring and define the technical culture of the team
How You'll Work.
Team & Collaboration
Collaborate with Principal/Staff Engineers across payments, auth, live ops, and catalog; mentor the Tech Lead and engineers
Communication Scope
Exceptional technical communication; clear RFCs and ADRs; productive architecture reviews; ability to explain second-order consequences to engineering and business leadership
Process & Methodology
lead delivery of the MCP server, define the deploy, versioning, and rollback model
Full Job Description
## Description ABOUT YOU We are looking for a Principal Engineer to take architectural ownership of the agent-readable Shop Builder platform. This is the most senior individual contributor role on the DevX and AI team, and the decisions you make here — which surfaces to expose, which formats to support, which standards to set — will bind the platform for years. You are not a manager, but your influence is org-wide. You define how developers and AI agents interact with Shop Builder's foundational capabilities: UI as Data, custom blocks, themes, data binding, catalog, payments. You are the technical authority on what the platform exposes and how, and you are deeply hands-on with the hardest parts of that work. ABOUT US Xsolla is a global payments and commerce platform for the games industry, used by thousands of publishers to monetize, distribute, and operate their titles worldwide. Shop Builder is Xsolla's storefront platform — used by publishers and game developers to launch and operate game shops, from straightforward catalog and webshops to fully custom storefronts built headless on our backend. For more information, visit xsolla.com. The DevX and AI team owns the public APIs, documentation, and AI features that give developers — and AI agents — the full surface they need to customize and extend Shop Builder. This is a net-new team of seven, standing up to fill a real gap: no dedicated team has owned the developer surface end to end. That changes now. ## Responsibilities Own the technical architecture of the agent-readable Shop Builder platform: which APIs to expose, in what shape, through which surfaces (REST, SDK, MCP, CLI). Define the interface contracts that LLMs and developers interact with — React component APIs, custom block schemas, theme tokens, data binding formats — and maintain them with the rigor of a public API. Design and lead delivery of the MCP server that allows AI agents (Claude Code, Cursor, etc.) to build, deploy, and operate Shop Builder st
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