Prompt Engineer in London

EXL (NASDAQ: EXLS) is a global data and artificial intelligence ("AI") company that offers services and solutions to reinvent client business models, drive better outcomes and unlock growth with speed. EXL harnesses the power of data, AI, and deep industry knowledge to transform businesses, including the world’s leading corporations in industries including insurance, healthcare, banking and financial services, media and retail, among others. EXL was founded in 1999 with the core values of innovation, collaboration, excellence, integrity and respect. We are headquartered in New York and have more than 60,000 employees spanning six continents.

We are seeking a highly analytical and business-focused Prompt Engineer with strong Insurance and Underwriting domain expertise to design, optimise, and govern GenAI-driven underwriting assistants and AI workflows. This role will focus on developing high-quality prompts for use cases including summarisation, risk insights, adverse media analysis, decision support, and underwriting assistant agents. The successful candidate will work closely with underwriters, SMEs, AI engineers, and data teams to translate complex underwriting processes into effective prompt logic and retrieval strategies. You will play a key role in improving response quality, reducing hallucinations, enhancing explainability and ensuring outputs are aligned with underwriting principles and business rules.

This position requires hands-on experience with prompt engineering, LLM evaluation frameworks, RAG architectures, and Responsible AI practices, alongside a strong understanding of insurance terminology, risk indicators, and underwriting workflows.

As part of your duties, you will be responsible for:

• Prompt Design & Optimization
  • Design prompts for summarization, risk insights, adverse media analysis, underwriter assistant agent etc.
  • Optimize prompts for accuracy, grounding, and consistency.
• Evaluation & Continuous Improvement
  • Define evaluation scenarios and validation datasets.
  • Use LLM-as-judge and feedback loops to improve responses.
  • Continuously refine prompts based on model performance and user feedback.
• RAG & Assistant Enablement
  • Work with AI engineers to improve retrieval quality and design context injection strategies.
  • Ensure outputs are grounded, explainable, and aligned with underwriting logic.
• Business Alignment
  • Translate underwriting workflows into prompt logic.
  • Incorporate domain-specific language, risk indicators, and business rules.
  • Collaborate with underwriters and SMEs.
• Prompt Governance
  • Maintain prompt library and versioning.
  • Define templates for different LOBs and use cases.
  • Ensure consistency across assistant and workflows.

Qualifications and experience we consider to be essential for the role:

• Experience: 5–8+ years with 2–4+ years in GenAI / prompt engineering Domain (Mandatory): Strong insurance/underwriting knowledge.
• Education: Bachelor’s/Master’s in Engineering, Data Science, Business Analytics, or related.
• Profile Type: Hybrid business + technical, strong analytical thinker.

Technical skills:

• GenAI & Prompting - prompt engineering techniques (few-shot, chain-of-thought, structured prompts); Experience with Azure OpenAI / LLM APIs; Prompt versioning and optimization.
• RAG & Retrieval Awareness - understanding of Azure AI Search and retrieval behaviour; Context design and grounding strategies; Ability to reduce hallucinations via prompt + retrieval design.
• Evaluation & Quality - LLM-as-judge / evaluation frameworks; Output validation and benchmarking; A/B testing of prompts.
• Safety & Governance - Awareness of guardrails (NeMo Guardrails); PII handling (Presidio); Responsible AI practices.
• Collaboration & Tools - Familiarity with APIs, JSON, and structured outputs; Basic Python; Working with AI engineers and data teams.

As part of a leading global Data and AI company, you can look forward to:

• A competitive salary with a generous bonus, private healthcare, critical illness life assurance at 4 x your annual salary, income protection insurance, and a rewarding pension.
• EXL provides everyday financial well-being solutions, such as cash back cards, in which you can earn cashback while enjoying discounts, promotions, and offers from top retailers.
• We also offer a Cycle Scheme where you can save money on bikes and cycling accessories.
• At EXL, we are committed to providing our employees with the tools and resources they need to succeed and excel in their careers.
• We offer a wide range of professional and personal development opportunities.
• We also support a range of learning initiatives that allow our employees to build on their existing skills and knowledge.
• From online courses to seminars and workshops, our employees have the opportunity to enhance their skills and stay up to date with the latest trends and technologies.

As an Equal Opportunity Employer, EXL is committed to diversity. Our company does not discriminate based on race, religion, colour, national origin, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, age, or disability status. EXL employees are eligible to purchase stock as part of our Employee Stock Purchase Plan (ESPP). At EXL, we offer a flexible hybrid working model that allows employees to live a balanced, healthy lifestyle while strengthening our culture of collaboration.

To be considered for this role, you must already be eligible to work in the United Kingdom.