ML/AIWork

Fullstack (Backend Focus)

BUSINESS INSIGHTS · Barcelona, ES

Job description

We’re looking for a Senior Backend Engineer to join an AI team working on a Secure GPT platform (an internal ChatGPT-like solution) used across a global environment.

The focus of the role is to build real AI features in production, making them scalable, secure, and actually useful for the business.

What you’ll be doing

  • Building and improving backend features (mainly Node.js / TypeScript)
  • Working on GenAI use cases like:
    • document understanding
    • translation
    • agent-based workflows
    • APIs and automation
  • Owning your work end-to-end (from design to production and monitoring)
  • Defining and tracking how features perform (KPIs, usage, etc.)
  • Collaborating with product and tech teams in an international setup
  • Continuously improving how things are built and scaled

️ Tech environment

  • Backend: Node.js, TypeScript
  • Frontend: React / Next.js (light involvement)
  • Cloud: Azure (App Services, Cosmos DB, monitoring)
  • CI/CD and DevOps practices
  • GenAI: OpenAI, Azure AI, RAG, agents, prompt engineering

✅ What we’re looking for

  • Solid backend experience (ideally 5+ years)
  • Strong Node.js / API development background
  • Hands-on experience with AI in real use cases (LLMs, RAG, agents…)
  • Comfortable working in cloud environments (Azure is a plus)
  • Someone who takes ownership and can work end-to-end
  • Practical, problem-solving mindset
  • Comfortable working in English

➕ Nice to have

  • Terraform / Bicep
  • Observability / monitoring experience
  • Exposure to regulated environments or security topics

✅ What we’re looking for

  • Solid backend experience (ideally 5+ years)
  • Strong Node.js / API development background
  • Hands-on experience with AI in real use cases (LLMs, RAG, agents…)
  • Comfortable working in cloud environments (Azure is a plus)
  • Someone who takes ownership and can work end-to-end
  • Practical, problem-solving mindset
  • Comfortable working in English

➕ Nice to have

  • Terraform / Bicep
  • Observability / monitoring experience
  • Exposure to regulated environments or security topics

ML/AI Work links you to the employer's original posting — always verify the details there before applying.

More Generative AI and LLM roles

View all →
Fullstack (Backend Focus)
BUSINESS INSIGHTS
Apply →