GenAI Prompt Engineer

GenAI Prompt Engineer Certain Advantage are recruiting on behalf of our globally renowned brand for a GenAI Prompt Engineer in London, initially until 31st Dec. This will need 2-3 days working onsite in Central London. The Role & Responsibilities

• Design, test, and refine prompts to optimise the performance of LLMs across various tasks (e.g., summarisation, Q&A, content generation, reasoning).
• Develop prompt libraries and reusable templates for internal and external use cases.
• Collaborate with cross-functional teams to integrate prompt engineering into product workflows and AI pipelines.
• Analyse model outputs and user feedback to iteratively improve prompt effectiveness and reliability.
• Stay current with the latest research and advancements in prompt engineering, LLMs, and GenAI.
• Contribute to internal documentation, best practices, and knowledge sharing initiatives.

Required Qualifications:

• Bachelor’s or Master’s degree in Computer Science, Artificial Intelligence, Linguistics, or a related field.
• Commercial years of experience in AI/ML, with at least 1 year focused on prompt engineering or working with LLMs.
• Strong understanding of NLP, transformer models, and generative AI principles.
• Hands-on experience with platforms such as OpenAI, Anthropic, Cohere, or Hugging Face.
• Proficiency in Python and familiarity with tools like LangChain, PromptLayer, or similar.
• Excellent analytical, problem-solving, and communication skills.

Preferred Qualifications:

• Experience with prompt tuning, fine-tuning, or reinforcement learning from human feedback (RLHF).
• Familiarity with multi-modal AI systems (e.g., text-to-image, speech-to-text).
• Background in UX writing, technical writing, or computational linguistics.
• Contributions to open-source GenAI projects or publications in AI/ML conferences.

Does this sound like your next career move? Apply today!Working with Certain AdvantageWe go the extra mile to find the best people for the job. If you’re hunting for a role where you can make an impact and grow your career, we’ll work with you to find it.We work with businesses across the UK to find the best people in Finance, Marketing, IT and Engineering.If this job isn’t for you, head to certainadvantage.co.uk and register for job alerts and career guidance tips.