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VARITE INC

AI/ML Developer

VARITE INC
United Kingdom · Contract · Mid-Senior

Lead the creation of production-grade AI systems that combine the state of the art techniques in AI/ML including but not limited to classical machine learning algorithms, modern techniques such as large-language models (LLMs), agentic AI frameworks, graph-neural networks (GNNs) and knowledge graphs to deliver autonomous, high-value business capabilities.


Key Skills

  • Design, pre-train, fine-tune and evaluate domain-specific LLMs; incorporate Retrieval-Augmented Generation (RAG) and prompt-engineering techniques to maximise factual accuracy and controllability.
  • Build and orchestrate multi-agent architectures with frameworks such as AutoGen, LangGraph, CrewAI and LangChain to enable autonomous task planning, tool use and self-improvement.
  • Experience and / or knowledge in AI safety techniques.
  • Implement real-time and batch inference services; expose LLM/agent capabilities through secure REST/gRPC or event-driven APIs.
  • Construct and maintain enterprise-scale knowledge graphs that feed ranking, recommendation and search pipelines.
  • Develop and optimise graph-neural-network models for link prediction, node classification and reasoning over structured and semi-structured data sets.
  • Establish MLOps practices—data/feature versioning, reproducible experiments, CI/CD, automated retraining and rollback—across cloud and on-prem platforms.
  • Mentor engineers through code reviews, design sessions and internal workshops; influence technical roadmaps and research agendas.


Core Qualifications

  • MSc/PhD in Computer Science, Machine Learning, Mathematics or related field, or equivalent industry experience.
  • 5+ years software/ML engineering; 5+ years hands-on with deep-learning frameworks (PyTorch, TensorFlow, JAX) and distributed training on top of Python language.
  • Demonstrable experience pre-training or extensively fine-tuning LLMs (GPT, Llama, Mistral, etc.) on multi-billion-token corpora, including RLHF or DPO techniques.
  • Production experience with agentic frameworks and autonomous AI agents that learn and adapt in real-world environments.
  • Hands-on knowledge of GNN libraries (PyTorch Geometric, DGL, Deep Graph Library) and graph databases (Neo4j, TigerGraph, Neptune).
  • Proven ability to architect data pipelines with Spark/Flink/Databricks and deploy on AWS, GCP or Azure using Kubernetes and Terraform.


Preferred / Bonus Skills

  • Experience optimising transformer models for edge devices (quantisation, pruning, distillation).
  • Contributions to open-source GenAI projects, patents or peer-reviewed publications.

Key Skills

Ranked by relevance

ai machine learning pytorch neural networks kubernetes tensorflow python neo4j cloud mlops cicd aws gcp
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Posted
Sep 29, 2025
Type
Contract
Level
Mid-Senior
Location
Stevenage
Company
VARITE INC

Industries

IT Services IT Consulting

Categories

Engineering

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