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Senior Machine Learning Engineer

Job in Belfast, County Antrim, BT1, Northern Ireland, UK
Listing for: ViVA Tech Talent
Full Time position
Listed on 2026-02-18
Job specializations:
  • Software Development
    AI Engineer, Machine Learning/ ML Engineer
Salary/Wage Range or Industry Benchmark: 80000 - 100000 GBP Yearly GBP 80000.00 100000.00 YEAR
Job Description & How to Apply Below

We're partnered with an intelligence-driven technology company operating at the cutting edge of AI, who is hiring a Senior ML Engineer to build next-generation systems powered by LLMs, RAG, and agentic workflows. This is a rare opportunity to work on high-impact AI products solving complex, real-world problems at serious scale.

This is a hands‑on engineering role. We’re looking for someone who can write high-quality code, architect systems properly, and deploy to production at scale.

🔍 What You’ll Be Doing
  • Designing and deploying LLM-powered systems with multi-step reasoning and tool orchestration
  • Building agentic workflows using Lang Graph (commercial experience required)
  • Developing and optimising RAG pipelines, vector search, and semantic retrieval systems
  • Shipping production-ready APIs and microservices for real-time AI applications
  • Owning LLMOps, evaluation, monitoring, latency and cost optimisation
  • Architecting systems that process and analyse large-scale, heterogeneous data streams
✅ What We’re Looking For
  • Strong, hands‑on Python coding ability (essential)
  • 1+ year of commercial Lang Graph experience (essential)
  • Proven experience building and shipping LLM / Agentic AI systems into production at scale
  • Deep experience with RAG, vector databases (e.g. Pinecone, Weaviate), embeddings
  • Experience integrating and fine‑tuning foundation models
  • Strong understanding of distributed systems, microservices, and streaming architectures
  • Production experience with Docker and infrastructure‑as‑code (e.g. Terraform, Cloud Formation)
  • Track record of delivering reliable, scalable AI systems with real-world impact
🌍 The Opportunity

You’ll join a team building high-impact AI systems deployed in real-world environments
, solving complex, high-stakes problems with modern LLM and agent frameworks.

  • High-autonomy, high-impact engineering environment

If you’ve built agentic AI systems in production
, have genuine Lang Graph experience
, and enjoy solving complex problems with clean, scalable code — we’d love to hear from you.

Get in touch for full info - submit your CV, or reach out to Carol Donnelly on

#J-18808-Ljbffr
Position Requirements
10+ Years work experience
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