Fullstack (Back end - AI)

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

Job requirements

✅ What we’re looking f

• 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

Why it’s interesting

• You’ll be working on AI that is already in production, not just experiments
• Real ownership of what you build
• Modern stack + interesting technical challenges
• Strong mix of backend + AI

Hybrid

• Barcelona, Catalunya [Cataluña], Spain

SOFTWARE INSIGHTS