Senior ML/AI Engineer

Senior ML/AI Engineer Senior ML engineering role combining hands-on model development with production system ownership at genuine scale LLM/RAG, NLP, and streaming ML pipelines processing millions of items daily AWS-native (Lambda, ECS, SageMaker, MSK, Kafka), strong Python required £65,000-£75,000 High-impact role across AI Insights, Automated Answers, and mission-critical Machine Moderation systems About the Company Our client is a global technology company building smart shopping experiences, connecting thousands of brands and retailers with billions of consumers through enterprise-grade content and insight tools. Recognised as a Great Place to Work across multiple regions including the UK, they operate at serious scale with a strong engineering culture. Role Overview We're looking for a Senior ML/AI Engineer to join a Machine Learning team responsible for critical AI-powered services. This is a hands-on role spanning model development and production maintenance in a fast-paced, data-rich environment. You'll work across LLM/RAG architectures, NLP-based content moderation, and high-volume streaming pipelines, with real ownership of systems processing millions of reviews, questions, and answers daily. Key Responsibilities Develop and enhance AI services including AI Insights and AI Automated Answers using LLM/RAG architectures Maintain and optimise the mission-critical Machine Moderation system, built on Python NLP models deployed on AWS (Lambda, ECS, SageMaker, SQS, SNS) Train, evaluate, and monitor ML models using orchestration tools such as Flyte or Airflow Manage ML pipelines on AWS with containerised services and CI/CD via GitHub Actions Implement streaming data processing with Kafka for real-time content moderation Monitor model performance and drift using observability tools such as Arize AI Collaborate with Scala-based service teams and maintain API integrations for model serving Conduct architectural reviews for ML pipeline design and Infrastructure as Code (Terraform) Research and implement novel LLM/NLP approaches for content moderation and consumer insights What You'll Need Essential: Strong Python proficiency for ML model development and deployment Experience with AWS cloud services (Lambda, ECS, ECR, SageMaker, MSK, SNS, SQS) Experience with NLP, LLMs, and production ML monitoring tools Desirable: Familiarity with ML orchestration platforms and CI/CD pipelines Knowledge of streaming technologies (Kafka) and high-volume data processing Strong Software Engineering or Computer Science background Willingness to work with Scala-based systems Benefits & Package £65,000-£75,000 Flexible office attendance - hybrid working available Global business with genuine scale and international exposure High-impact, research-oriented ML work at production scale You must currently reside in Northern Ireland. Get in touch with Colin directly at Skills: Senior ML AI Python AWS ADZN1_NI41bf1e1f-b16b-4260-a40a-17c77a06fd15