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Senior Backend Engineer, MCP, RAG and Fine-Tuning (100% Remote)

Company: Hopper

Location: rio de janeiro, London

Posted: June 03, 2026

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Position Details

About the job Did you know Hopper's technology powers some of the largest travel portals in the world? Our Hopper Technology Solutions (HTS) platform drives travel purchases for major global brands — from banks to airlines to fintech leaders. This platform is essentially a configurable, multi-tenant travel commerce engine, enabling partners to launch world-class hotel and travel booking experiences faster, with less custom engineering.

We’re looking for a senior software engineer who has adopted the best practices in terms of AI-assisted coding. You are not using AI to auto-complete your code; you are using multiple agents to autonomously deliver features at a speed that was impossible a few months ago. You understand well the strengths and weaknesses of LLMs, and you know how to build a feedback loop and guardrails to get the best out of them.

Tech stack

  • Backend systems are written in Scala, and we use a suite of GCP services
  • ...