Principal Engineer — DevX & AI

Xsolla
Montreal, Canada, Serbia
Workplace: RemoteFull timeFunction: Data Science & Machine LearningExperience: 10+ yearsSkills: ["Leadership","Communication","Mentoring","Strategic thinking","Documentation"]

Lead architectural ownership of the agent-readable Shop Builder platform, defining interfaces for APIs, SDKs, and developer tooling; design and deliver the MCP server, CLI, and sandbox for AI agents; mentor engineers, set code standards, and drive developer-facing surfaces across payments, auth, live ops, and catalog.

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FursaFursa
Xsolla
Xsolla
4 months ago

Principal Engineer — DevX & AI

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Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 3 hours agoStatus: Live

Job Summary

Lead architectural ownership of the agent-readable Shop Builder platform, defining interfaces for APIs, SDKs, and developer tooling; design and deliver the MCP server, CLI, and sandbox for AI agents; mentor engineers, set code standards, and drive developer-facing surfaces across payments, auth, live ops, and catalog.
Location: Montreal, Canada, Serbia
Workplace: Remote
Employment Type: Full time
Job Function: Data Science & Machine Learning

Key Responsibilities

  • •Own the technical architecture of the Shop Builder platform, including which APIs to expose and through which surfaces (REST, SDK, MCP, CLI).
  • •Define interface contracts for LLMs and developers (React component APIs, block schemas, theme tokens, data binding formats) and maintain them as public APIs.
  • •Design and lead delivery of the MCP server enabling AI agents to build, deploy, and operate storefronts end-to-end.
  • •Architect the CLI and local development environment (scaffolding, hot reload, deploy commands) and how developers push changes to production.
  • •Define deploy, versioning, and rollback models for developer-published content and oversee sandbox/preview environments for safe iteration.

Pay and Benefits

Perks:Health InsuranceDentalVisionPaid Leave

Key Requirements

  • •10+ years of professional engineering experience with a proven track record as a Staff or Principal engineer who has shaped platforms, APIs, or developer tooling.
  • •Deep expertise in designing and shipping public APIs and SDKs, including versioning, 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 tool-use interfaces, and experience building AI agent tooling.
Experience:10+ yearsGamesDigital commerceStorefrontDevtools
Skills:LeadershipCommunicationMentoringStrategic thinkingDocumentation
Languages:English
Tech Stack:JavaScriptTypeScriptReactCLIMCPAWSGCPCI/CDDockerKubernetesAPI designLLM

Company Brief

Xsolla
Provides payment, billing, distribution and commerce solutions for video game developers and publishers, enabling in-game purchases, store infrastructure, fraud protection, and global payment processing to monetize games across platforms and regions.
Industry: Payments
Company Size: Large (251 to 1,000 employees)
Growth: Established Company
Headquarters: Sherman Oaks, Los Angeles, United States
Founded: 2005
WebsiteLinkedIn