Backend AI Engineer

Haystack
London, GB
On-site

Job Description

Senior Backend AI Engineer | £95,000 - £105,000

We're working with a high-growth AI automation scale-up on this exciting opportunity. They are building advanced AI-driven platforms to automate complex enterprise workflows and deliver intelligent insights at scale.

As a Senior Backend AI Engineer, you will own the architectural design and delivery of AI orchestration systems. You will be instrumental in bridging the gap between advanced AI models and production-ready platform infrastructure using Python and cutting-edge Generative AI techniques.

The Role

  • Lead the design and delivery of robust AI orchestration systems that connect LLMs to complex enterprise workflows.
  • Build and scale the underlying platform infrastructure to ensure high availability, security, and enterprise-grade compliance.
  • Implement advanced AI architectures including RAG (Retrieval-Augmented Generation) and autonomous agent-based systems.
  • Develop high-performance APIs and event-driven architectures to support real-time AI decision-making processes.
  • Collaborate directly with Product and Data teams to transition cutting-edge AI features from prototype to reliable production environments.

What You'll Need

  • Extensive professional experience in Backend Engineering with a deep mastery of Python and distributed systems.
  • Proven track record of building and deploying production-grade systems utilizing LLMs and Generative AI frameworks.
  • Strong technical foundation in prompt engineering, vector databases, and AI agent architectures.
  • In-depth knowledge of authentication protocols, cloud security, and building scalable, secure enterprise platforms.
  • Hands-on experience with system observability, monitoring tools, and maintaining high reliability in fast-moving environments.

What's On Offer

  • Competitive salary up to £105,000 with significant opportunities for career ownership and impact.
  • Modern hybrid working environment in the heart of London, balancing collaboration with flexibility.
  • The chance to work at the absolute forefront of AI technology, building products that solve genuine enterprise challenges.
  • A high-growth culture where you have the autonomy to shape the technical roadmap and architecture from the ground up.

Apply via Haystack today!

Skills & Requirements

Technical Skills

PythonLlmsGenerative aiPrompt engineeringVector databasesAi agent architecturesAuthentication protocolsCloud securitySystem observabilityMonitoring toolsAiEnterpriseCloud

Salary

£95,000 - £105,000

year

Employment Type

FULL TIME

Level

mid

Posted

4/14/2026

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