AI Engineer

AI Engineer

We are looking for an AI Engineer ready to push the boundaries of what's possible with LLMs in a high-paced, intellectually demanding environment. This is an opportunity to shape the intelligence layer of our cutting-edge AI platform—designing, building, and optimizing the systems that power enterprise-grade AI experiences. You'll have the autonomy to drive ideas from concept to production, working at the intersection of applied research and scalable engineering.

Key Responsibilities

  • LLM Development & Integration: Design, build, and optimize LLM-powered features using known frameworks.
  • AI System Architecture: Work on robust, scalable AI pipelines that handle retrieval, reasoning, and generation at enterprise scale.
  • Prompt Engineering & Evaluation: Design advanced prompting strategies and build comprehensive evaluation pipelines—defining metrics, curating test sets, and running systematic benchmarks to ensure consistent, high-quality model outputs for domain-specific use cases.
  • Backend Development: Build performant Python-based backend systems that seamlessly integrate AI capabilities with our core product infrastructure.
  • Data & Vector Systems: Work with vector databases and data pipelines to power knowledge systems.
  • Cross-Functional Collaboration: Partner with product, design, and engineering teams to translate AI capabilities into intuitive user experiences.

Qualifications

  • Autonomous & Ideas-Driven: Self-directed with a bias toward action—you identify problems and propose solutions.
  • Agent Architectures: Experience with agent architectures, tool-use patterns, and multi-step reasoning systems.
  • Proficiency in Python: Deep expertise in Python with a strong grasp of async programming, type systems (Pydantic), and best practices for production-grade code.
  • Scalable Backend Systems: Proven ability to design and build backend systems that are performant, reliable, and maintainable.
  • Database Expertise: Strong experience with PostgreSQL and familiarity with vector databases for semantic search and retrieval.
  • Strong Problem-Solving Skills: Ability to debug complex systems, optimize for latency and cost, and navigate ambiguity.
  • Proven Track Record: Demonstrable experience through previous roles, side projects, or open-source contributions in the AI/ML space.

Bonus Points

  • Fundamentals of statistics, machine learning, and deep learning.
  • Experience with evaluation frameworks and observability tools.
  • Contributions to open-source AI projects or published research.
  • Familiarity with MLOps, model serving (vLLM, TGI), and infrastructure for AI at scale.
  • Background in fine-tuning, RLHF, or working with open-weight models.

Job Details

Company
Noxus
Location
City of London, London, United Kingdom
Posted