Summary
Senior hands-on AI engineer at Citi in Belfast building a strategically important AI system that powers Citi's Global Lending Platforms: designing data-centric AI components, MCP tools, and LLM agents in Python (Pydantic, ADK/LangGraph, SQL), while leading code reviews, mentoring engineers, and shaping architecture in a hybrid SCRUM team.
We are seeking a highly motivated and experienced **Senior AI Engineer** to join and help lead an experienced team of software developers. You will take a senior, hands-on technical role in building a new, strategically important AI system that directly powers one of Citi's Global Lending Platforms. This is a great opportunity to build AI at real scale inside a leading global financial institution, shaping architecture and technical direction while mentoring engineers and partnering closely with senior stakeholders, in a culture that values craft, ownership, and continuous learning. **Responsibilities** + Design and implement software components and applications for AI systems, with a primary focus on data + Build MCP (Model Context Protocol) tools and AI agents that effectively utilize this data to solve business problems + Act as a senior, hands-on technical leader within a skilled SCRUM team - take ownership of complex, ambiguous problems, drive features from design through production, and ensure delivery of high-quality, production-grade applications + Thrive in a fast-paced, results-driven execution environment, balancing speed with engineering excellence, and proactively identify and resolve technical risks before they impact delivery + Lead code reviews, drive technical discussions, and help define shared engineering standards; mentor and coach junior and mid-level engineers to raise the overall capability of the team + Partner with product owners, architects, and senior stakeholders to translate business requirements into scalable, resilient technical solutions + Exercise sound judgment on architecture, design trade-offs, and technology choices, balancing short-term delivery needs with long-term platform health + Champion engineering rigor across the team, including testing, observability, security, and operational readiness for production AI systems **Skills & Qualifications** + Significant experience as a Software Engineer, with a track record of increasing scope, ownership, and technical leadership + Experience working in complex enterprise environments, collaborating with global teams + Experience applying large language models (LLMs) to solve real business problems, from ideation through to production deployment + Deep fluency in the Python AI/ML ecosystem, including Pydantic, REST API integration, database access, and orchestration frameworks such as ADK or LangGraph + Strong proficiency in SQL and working with complex data in enterprise environments + Demonstrated experience leading or mentoring engineers, influencing technical direction, and driving engineering standards within a team - big plus + A genuine team player who can also operate with full autonomy and ownership - equally effective in the office or working remotely + Sharp, structured thinker with strong analytical skills, sound judgment, and the ability to independently research, evaluate, and master new technical domains + Excellent interpersonal, communication, and stakeholder-management skills in English + Bachelor's degree in Computer Science or related field; advanced degree a plus **What's in It for You** + Take on a senior, high-visibility role working alongside experienced engineers while helping shape the growth of others + Work on a complex, high-stakes project deployed globally within a leading financial institution + Operate in a culture that actively encourages and sponsors personal and professional development + Build with cutting-edge AI tools - MCP, LLMs, agent frameworks - at real enterprise scale, with the latitude to influence architecture and technical direction + Flexible hybrid working model supporting both office collaboration and remote productivity ------------------------------------------------------ **Job Family Group:** Technology ------------------------------------------------------ **Job Family:** Applications Development ------------------------------------------------------ **Time Type:** Full time ------------------------------------------------------ **Most Relevant Skills** Please see the requirements listed above. ------------------------------------------------------ **Other Relevant Skills** For complementary skills, please see above and/or contact the recruiter. ------------------------------------------------------ _Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law._ _If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review_ _Accessibility at Citi (https://www.citigroup.com/citi/accessibility/application-accessibility.htm)_ _._ _View Citi's_ _EEO Policy Statement (https://www.citigroup.com/global/eeo-aa-policy)_ _and the_ _Know Your Rights (https://www.eeoc.gov/sites/default/files/2023-06/22-088\_EEOC\_KnowYourRights6.12ScreenRdr.pdf)_ _poster._ Citi is an equal opportunity and affirmative action employer. Minority/Female/Veteran/Individuals with Disabilities/Sexual Orientation/Gender Identity.