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Senior AI Engineer (Backend & AI Systems)

GTT Communications

Salary not specified
Sep 5, 2025
Remote, US
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Building a sophisticated, modular AI platform designed to automate and reason through complex business and technical challenges, creating a powerful and extensible AI assistant.

Requirements

  • Expert-level Python proficiency, with a deep understanding of object-oriented design, concurrency, and best practices.
  • Strong, demonstrable experience designing and building APIs (gRPC is a significant advantage; extensive REST/FastAPI experience is also highly valued).
  • Solid experience with PostgreSQL (or similar relational databases) and proficiency with an ORM like SQLAlchemy.
  • Practical understanding of Vector Databases (e.g., ChromaDB, Milvus) and their role in AI applications like RAG.
  • Hands-on mastery of Docker for building, shipping, and running applications.
  • Experience integrating with third-party LLM APIs and a solid grasp of concepts like tool calling and prompt engineering.
  • A forward-thinking mindset with a demonstrable ability to understand, review, and integrate complex codebases, including those generated with AI assistance.

Responsibilities

  • Guide the AI-augmented development of high-performance, modular Python services that form the backbone of our ecosystem.
  • Implement and evolve the gRPC-based APIs that enable seamless, efficient communication between the orchestrator and its various tools.
  • Integrate and harness Large Language Models to drive complex workflows, tool selection, and advanced reasoning capabilities.
  • Architect and manage our data persistence layer, combining the strengths of relational (PostgreSQL) and vector (ChromaDB) databases.
  • Build and optimize the data ingestion and processing pipelines that continuously enrich our AI's knowledge base.
  • Work directly with the Lead Architect to solve challenging technical problems, make key design decisions, and guide the platform's technical direction.

Other

  • 5+ years of professional experience building complex, scalable backend systems.
  • A strong aptitude for "Vibe Coding" is a significant advantage. We are looking for someone who is not just open to, but genuinely excited about, an AI-augmented development workflow.
  • Deep, hands-on experience designing and implementing a production gRPC ecosystem.
  • Experience building end-to-end Retrieval-Augmented Generation (RAG) systems.
  • Background in infrastructure automation, DevOps, or systems engineering.