Senior AI Solutions Architect

Company: Leute Passen Technologies
Apply for the Senior AI Solutions Architect
Location: Greater London
Job Description:

Senior AI Solutions Architect (LLM & Client-Facing)

Work Mode: Hybrid

Location: London

What You’ll Do

Design & Architect AI Solutions

  • Architect and implement advanced LLM systems (RAG, fine-tuning, agents, copilots) from concept to production.
  • Design end-to-end AI pipelines encompassing data processing, model evaluation, deployment, and monitoring.
  • Select and optimize the use of commercial and open-source LLMs (e.g., GPT, Claude, LLaMA) for performance, cost, and security.
  • Build scalable, secure, and cost-efficient cloud-based AI architectures.

Lead Client Delivery & Advisory

  • Act as the primary technical point of contact for enterprise clients, translating business needs into technical requirements and solutions.
  • Lead workshops, solution walkthroughs, and presentations for both technical and executive audiences.
  • Own project delivery timelines, manage risks, and ensure projects are delivered on time and within scope.

Drive Team Leadership & Growth

  • Mentor and coach junior and mid-level data scientists and ML engineers.
  • Contribute to hiring, onboarding, and the establishment of technical standards and best practices.
  • Lead and scale a high-performing AI delivery team, fostering a culture of excellence.
  • Establish robust practices for code quality, documentation, model governance, and MLOps.

Must-Have Qualifications

What We’re Looking For:

  • 6+ years of professional experience in data science, machine learning, or AI engineering.
  • Proven, hands‑on experience building and deploying LLM applications (RAG, agents, fine‑tuning) in production environments.
  • Expertise in Python and deep learning frameworks (PyTorch or TensorFlow).
  • Deep technical knowledge of prompt engineering, retrieval‑augmented generation (RAG) architectures, fine‑tuning, and inference optimization.
  • Solid experience deploying and monitoring models in production on a major cloud platform (AWS, Azure, or GCP).
  • Proven client‑facing, consulting, or stakeholder management experience with excellent communication and presentation skills.

Nice-to-Have Qualifications

  • Experience directly mentoring or leading technical teams.
  • Strong MLOps skills (CI/CD, containerization, model monitoring) using tools like MLflow, Weights & Biases, etc.
  • Experience working in regulated industries (finance, healthcare, enterprise SaaS).
  • Knowledge of AI governance, responsible AI, data privacy, and security standards.
  • Experience scoping projects, estimating timelines, and writing technical proposals.

What Success Looks Like In Your First Year

  • Successfully deliver multiple end‑to‑end LLM projects for key clients, achieving defined success metrics.
  • Become the go‑to trusted AI advisor for a portfolio of clients and internally for company leadership.
  • Design and socialize reusable frameworks, patterns, and best practices that elevate our team’s efficiency and quality.
  • Take on clear leadership responsibilities for a growing team, contributing directly to their development and the team’s productivity gains.

Skills: large language models (llms),amazon web services (aws),artificial intelligence,pytorch,deep ml,rag,computer vision,gcp,ai,nlp,tuning,tensorflow,leadership,ci/di,mlops,azure,fine-tuning

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Posted: February 28th, 2026