Engineer Lead, Artificial Intelligence / Machine Learning (Prompt Engineer)

About the job

Are you curious, motivated, and forward-thinking? At FIS you'll have the opportunity to work on some of the most challenging and relevant issues in financial services and technology. Our talented people empower us, and we believe in being part of a team that is open, collaborative, entrepreneurial, passionate and above all fun. About the team The Client OFfice AI/ML CoE team is a horizontal CoE for Client Office that is helping us drive revenue and bring significant savings to our businesses by identifying, exploring, and implementing AI/ML solutions. The team consists of highly motivated solution architects, data scientists and ML engineers. What you will be doing As a Prompt Engineer, you will be working on developing cutting-edge Gen AI and Agentic solutions across the organization. What you bring: Knowledge / Experience • 10+ years of overall development/QA experience with 2+ years on AI/Gen AI/Agentic AI • Designing high-quality prompts for GenAI applications, including LLMs, multimodal models, and agent-based systems • Creating prompt frameworks for: • classification • summarization • extraction • transformation • reasoning • multi-turn conversational flows • Experience crafting prompts for tool-calling, structured outputs (JSON), function invocation, and agent orchestration • Building evaluation datasets and systematically measuring prompt performance (accuracy, grounding, safety) • Experience working with retrieval-augmented systems (RAG) and optimizing prompts for better retrieval behavior • Understanding of LLM behavior, limitations, hallucination patterns, and mitigation techniques • Designing domain-specific prompt libraries for repeated tasks and workflows • Experience working with enterprise AI systems, APIs, AI Studios, or orchestration frameworks • Exposure to agentic AI concepts - planning, memory, tool use, autonomous actions Skills • Strong understanding of prompt engineering techniques: • Few-shot, multi-shot • Chain-of-Thought (CoT), self-consistency, and reasoning chains • ReAct patterns (reasoning + acting) • Instruction tuning principles • Guardrail and safety prompt design • Ability to design and iterate prompts through: • data-driven experimentation • A/B testing • model output evaluation • Ability to work effectively with: • LLMs (open & proprietary) • Embedding models • Multimodal models • Understanding of context window management, memory optimization, and model routing • Hands-on experience with Python for: • experimentation • model probing • prompt evaluation automation Qualifications • Bachelor's degree in engineering or related field or the equivalent combination of education, training, or work experience Competencies • Fluent in English • Excellent communicator - ability to discuss technical and commercial solutions to internal and external parties and adapt depending on the technical or business focus of the discussion. • Attention to detail - track record of authoring high quality documentation. • Organized approach - manage and adapt priorities according to client and internal requirements. • Self-starter but team mindset - work autonomously and as part of a global team. What we offer you • A multifaceted job with a high degree of responsibility and a broad spectrum of opportunities • A broad range of professional education and personal development possibilities - FIS is your final career step! • A competitive salary and benefits • A variety of career development tools, resources and opportunities.

Requirements

• AI solutions
• Prompt Engineering
• Python

Qualifications

• Bachelor's degree in engineering or related field
• 10+ years of overall development/QA experience

Preferred Technologies

• AI solutions
• Prompt Engineering
• Python

Benefits

• A broad range of professional education and personal development possibilities
• A competitive salary and benefits

About the company

With a 50-year history rooted in the financial services industry, FIS™ is the world's largest global provider dedicated to financial technology solutions. We champion clients from banking to capital markets, retail to corporate and everything touched by financial services. Headquartered in Jacksonville, Florida, our 53,000 worldwide employees help serve more than 20,000 clients in over 130 countries.