Generative AI Engineer in London

At ChainThat, we are seeking a results‑driven AI engineer to lead and scale our efforts in developing cutting‑edge AI‑driven solutions. The candidate should have significant experience working on Python, REST API, and generative AI technologies. This role will involve designing, developing, and deploying AI models and APIs, fine‑tuning large language models for specific business use cases, and integrating AI capabilities into existing platforms.

If you are driven to achieve, have a growth mindset, and a passion for working with some of the hottest technology out there, then we would love to hear from you. We have ambitious plans and multiple openings, and we want to get you on the team as soon as we can – so we have an accelerated recruitment process and a great onboarding route ready for you.

Who are we? We create enterprise‑grade insurance technology platforms designed to help insurance organizations unlock their full potential. With a presence in the UK, US, and India, we combine industry insights and advanced technology to develop innovative solutions that are faster, more connected, and streamlined. Our platforms go beyond standard offerings, enabling insurers, reinsurers, MGAs, and brokers to achieve genuine agility and seamless connectivity across their ecosystems. Driven by our core purpose and commitment to excellence, we empower our clients to activate agility and embrace the future of insurance.

Job Location: UK

Job Responsibilities:

• Design, implement, and fine‑tune large language models (LLMs) and generative AI solutions using frameworks like OpenAI, Anthropic Claude, Gemini, or open‑source models.
• Build and optimize RAG (Retrieval‑Augmented Generation) pipelines, vector databases, and prompt engineering strategies for enhanced AI responses.
• Develop AI‑powered applications integrating LLMs with APIs, agents, and workflows to solve business use cases.
• Deploy and monitor generative AI models in production environments, ensuring performance, scalability, and responsible AI practices.
• Collaborate with cross‑functional teams to translate business requirements into GenAI solutions and stay current with emerging trends in generative AI.
• Implement guardrails, evaluation frameworks, and testing protocols to ensure output quality, safety, and compliance with ethical AI standards.
• Experience in utilizing generative AI models (e.g., GPT, Gemini, Claude) to solve business challenges and deliver innovative solutions.
• Drive innovation by exploring new advancements in Generative AI and vector database technology.
• Support users by developing documentation and assistance tools.

Essential Qualifications and Skills:

• Bachelor’s or master’s degree in computer science, Engineering or a related field.
• Minimum 6 years of experience with Python.
• Strong experience with GenAI frameworks (Lang Chain, LlamaIndex, Haystack) and LLM APIs (OpenAI, Anthropic, Azure OpenAI).
• Expertise in prompt engineering, fine‑tuning techniques, and working with vector databases (Pinecone, OpenSearch, Chroma DB, FAISS).
• Solid understanding of transformer architectures, attention mechanisms, etc.
• Hands‑on experience deploying AI applications using cloud platforms (AWS, Azure, GCP) and containerization tools (Docker, Kubernetes).
• Knowledge of MLOps practices, evaluation metrics for LLMs, and implementing responsible AI principles including bias mitigation and safety guardrails.
• Develop and maintain REST APIs for seamless integration of AI solutions with enterprise systems.
• Working experience in any Agentic AI framework (e.g. Lang Graph, crew AI).

Desirable Qualifications and Skills:

• Experience in the Insurtech or Fintech domain.
• Knowledge of policy administration systems or insurance industry workflows.

Our promise to you:

You will be joining a team of experts passionate about reshaping the insurance landscape. Our inclusive, supportive, and dynamic work environment encourages collaboration and values diverse perspectives. We are proud to champion innovation, foster professional growth, and make a meaningful impact on the global insurance market. As an equal opportunity employer, we invite you to be part of our journey to transform the industry through cutting‑edge technology and forward‑thinking solutions. Together, let’s activate agility and build the future of insurance.