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Senior Software Engineer

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Senior Software Engineer in Others

  • Sportradar
  • Full time
  • Email
  • Ljubljana, Slovenia

Responsibilities

  • Extend the SDK within its existing architecture with new modules, integrations, TypeScript definitions, and quality and test coverage.
  • Build responsive, themeable, accessible embeddable widgets that render correctly inside partner pages.
  • Integrate internal services and partner APIs across REST, WebSocket, and SSE with retries, reconnection, caching, and graceful degradation.
  • Develop and maintain AI coding-agent workflows, including context files, reusable skills and commands, and MCP server integrations.
  • Maintain fast feedback loops with typechecking, linting, and testing, and support agent autonomy.
  • Maintain developer documentation, runnable examples, and clear error messages for integrating partners.

Requirements

  • 3+ years of production JavaScript/TypeScript development experience.
  • Strong JavaScript and TypeScript proficiency with browser fundamentals including the DOM, event loop, modern bundling, and module formats.
  • Daily experience using AI coding agents beyond simple prompting, including structuring projects for reliable agent workflows.
  • Experience consuming HTTP and real-time APIs, including browser-side authentication, CORS, and graceful failure handling.
  • Sufficient CSS and layout skills to independently build moderately complex widgets from mocks.
  • Clear written communication for a developer audience and sound judgment about when to ask for clarification.
  • Preferred: sports betting, iGaming, trading, or other real-time/high-frequency data experience.
  • Preferred: unit, integration, browser automation, and visual regression testing experience, including Vitest and Playwright.
  • Preferred: third-party performance optimization experience involving bundle size, lazy loading, and host-page impact.
  • Preferred: CI/CD, release automation, and AWS experience.

Benefits

  • Fully on-site work in the office five days per week, with certain location-based exemptions potentially available.
  • Flexible working hours and autonomy in managing the workday and tasks.
  • Collaborative global work environment with social events, teambuilding, Women in Tech, and Pride groups.
  • Global Employee Assistance Programme.
  • Access to Calm and Reulay wellbeing applications.
  • Online training videos.

Sportradar

Sportradar delivers real‑time data, analytics, and integrity solutions that empower sports organizations to enhance fan engagement, streamline operations, and safeguard the integrity of competitions. By combining cutting‑edge technology with deep industry expertise, we help teams, leagues, and br...

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