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AI Engineer

Light IT Global

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Location:
United Kingdom, London

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

Not provided

Job Responsibility:

  • Design & build LLM applications: RAG over client KBs, multi-tool/agent graphs, prompt strategies, and voice UX (STT/TTS)
  • Implement retrieval & data flows: ingestion, chunking, metadata/embeddings, hybrid retrieval, re-ranking, caching
  • Own evaluation & quality: latency/cost budgets, A/Bs
  • Automate with n8n (or similar): connect services, data, and back-office workflows
  • expose reliable admin ops for non-engineers
  • Ship pipelines: Airflow for orchestration
  • dbt for transformations/semantic layer where relevant
  • Productionize: tracing/observability, feature flags, safe rollouts, secrets & config hygiene
  • Collaborate with clients: discover scope, explain trade-offs, demo progress
  • optional presales spikes/estimates

Requirements:

  • Strong Python (typing, tests, packaging) and web/service basics (FastAPI, Docker)
  • Hands-on building LLM apps with one or more: LangChain, LangGraph, AutoGen, Dify (or equivalents)
  • RAG end-to-end experience: corpus prep → embeddings → retrieval → re-rank → context assembly → measurable gains
  • Evaluation mindset: design offline eval sets and release gates
  • reason about faithfulness vs relevancy
  • control p95 latency & $/session
  • Cloud proficiency in AWS or Azure (using at least one in production)
  • Comfort with observability (OpenTelemetry/LangSmith/Prometheus/Grafana or similar)
  • English B2+
  • clear written & verbal client communication

Nice to have:

  • Vector DBs: pgvector, Qdrant, Pinecone, Azure Cognitive Search (vector)
  • rerankers (BGE/monoT5/Cohere/ColBERT)
  • Voice: Azure Speech, Whisper
  • VAD/barge-in, turn-taking logic
  • Data stack: dbt, Airflow, event streams
  • data contracts
  • Workflow: n8n design for non-tech ops
  • governance of low-code automations
  • Frontend for AI UX (React/Next.js, TypeScript)
  • Compliance awareness for EdTech (FERPA/COPPA) and Healthcare (HIPAA/GDPR)
What we offer:
  • Flexible work-from-home policy
  • Competitive salary and performance review
  • PE accounting and support
  • 18 paid vacation days per year
  • Unlimited paid sick days per year
  • The system of bonuses (Sport/Health/Education)
  • Expert community within the company
  • Paid courses and trainings, internal knowledge library

Additional Information:

Job Posted:
December 09, 2025

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