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

Hopper seeks a senior engineer proficient in AI-assisted development. The role focuses on using multiple agents to autonomously deliver features on the Hopper Technology Solutions (HTS) platform, a configurable travel commerce engine powering major brands.

Key Responsibilities:

Optimize codebases for agent performance and safety

Orchestrate AI agents to build end-to-end features with minimal oversight

Design guardrails and feedback loops maximizing agent productivity

Architect scalable solutions for multi-tenant portal launches

Train, deploy, and optimize LLMs for complex features

Collaborate asynchronously using AI-generated documentation

Required Skills & Experience:

Proven ability directing AI agents and automated workflows

Expertise designing technical guardrails for AI systems

Strong product thinking anchored in customer experience

Distributed systems development in Scala (or willingness to master it)

Experience with LLM training, deployment, and optimization

Tech Stack: Scala, GCP services, React, TypeScript

Benefits: Pre-IPO equity packages, unlimited PTO, travel stipend (Carrot Cash), 100% employer-paid medical/dental/vision, generous parental leave, remote work stipend.

Salary: $150,000-$250,000 annually plus equity.