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Senior Backend Engineer (AI Focus)

Spain; Bosnia & Herzegovina; France; Italy; Kosovo; Malta; Moldova; Portugal; Romania; Serbia; UK; Ukraine · Job Posted May 31, 2026
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Job Responsibility

  • Build backend services that bring AI capabilities to life inside our Payroll workflows
  • Collaborate with ML engineers and operations to create real-world AI-powered tools

Requirements

  • 8+ years of experience in backend/full-stack engineering
  • JavaScript, Node.js and PostgreSQL experience
  • Strong API integration skills
  • Hands-on experience integrating AI APIs into production systems
  • Comfort working with unstructured/messy data and ETL pipelines

Nice to have

  • Python scripting experience for AI workflows
  • Familiarity with OpenAI, Gemini, or Anthropic APIs
  • Experience building chatbot or conversational interfaces
  • Prompt engineering fundamentals
  • Document/file parsing (CSV, PDF, Excel)

What we offer

  • Stock grant opportunities dependent on your role, employment status and location
  • Additional perks and benefits based on your employment status and country
  • The flexibility of remote work, including optional WeWork access

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