Mark
Fullbrook

Principal Generative AI Software Engineer

Citi Markets Technology

Leading the architecture and engineering delivery of an enterprise Generative AI platform that brings governed data, tools and AI-assisted workflows into the daily work of Citi's Markets teams.

• Lead the technical direction and delivery of a multidisciplinary team building an agentic AI platform across multiple Markets businesses.
• Designed a modular architecture combining a shared conversational platform with specialist agents, tools and services, allowing new business capabilities to be added incrementally.
• Led the development of user experiences across Microsoft Teams and the web, supported by shared conversation, orchestration and integration services.
• Shaped the data architecture required to ingest, standardise and retrieve large volumes of Markets information reliably and efficiently.
• Embedded entitlements, auditability, human oversight and production controls into the platform, working within model-risk, cybersecurity and regulatory governance requirements.
• Work closely with Markets stakeholders, product leaders and senior technology management to translate business ambitions into a practical roadmap and engineering priorities.
• Remain hands-on across architecture, implementation and problem-solving while providing leadership across engineering disciplines and organisational boundaries.

Generative AI Engineering Manager

Citi Innovation Labs

• Built and led a global, multidisciplinary Generative AI team, scaling from one engineer to more than 20 within a year.
• Delivered one of Citi's earliest production Generative AI products, supporting the controlled drafting of structured documents using retrieval across structured and unstructured information.
• Designed a reusable, multi-tenant platform capable of supporting multiple business areas, use cases and delivery teams.
• Established shared configuration, evaluation, audit and moderation capabilities to improve quality, governance and operational confidence.
• Challenged a proposed platform rewrite through practical performance testing, demonstrating that the existing architecture could scale while reducing projected infrastructure costs by approximately 30%.
• Partnered with business, product and governance stakeholders to move AI initiatives beyond prototypes and into supported production services.

SVP Engineering Lead

Citi Innovation Labs

• Led a global team of 12 engineers to design and deliver an AI-enabled data remediation platform from inception through production.
• Supported the remediation of thousands of legal agreements as part of a major regulatory programme.
• Created a reusable workflow platform combining business process orchestration, event-driven services and controlled human decision points.
• Worked with operations, legal, product and senior technology stakeholders to turn complex regulatory requirements into practical software workflows.
• Established modern engineering practices across automated testing, containerised deployment, production support and incremental delivery.
• Promoted from VP to SVP in January 2023.

Director - Technology and Finance

Universal Packing Specialists

Board director of a 65-person export packing and manufacturing business, with responsibilities spanning technology strategy, finance, legal, HR and operational improvement. Combined leadership accountability with hands-on transformation of the company's systems and working practices.

• Developed and executed a company-wide technology modernisation strategy, replacing fragmented manual processes with an integrated operational platform.
• Worked directly with finance, sales, factory, warehouse and logistics teams to redesign workflows and improve operational visibility.
• Introduced real-time shop-floor data capture, giving managers more accurate information about work in progress and operational performance.
• Built mobile and customer-facing capabilities that improved traceability, evidence capture and communication throughout the fulfilment process.
• Managed organisational change around new systems, ensuring technology was adopted by operational teams rather than merely delivered to them.
• Balanced investment, operational priorities and technical ambition within the commercial constraints of a privately owned business.

Head of R&D

BloombergNEF

• Established a product-led, iterative delivery model that became a reference point for agile delivery across Bloomberg's London R&D organisation.
• Managed the development of native Android and iOS apps by partnering with an external team for rapid delivery while building internal mobile development capability.
• Fostered collaboration between my team and other Bloomberg industry verticals, leading to pilots and product advancements through shared innovation and technology.
• Secured a net increase of five headcount through effective business planning and senior presentations, recruiting high-calibre, diverse engineers at both senior and trainee levels.

Senior Software Engineer

BloombergNEF

• Delivered the MVP mobile application and supporting APIs for offline access to digital rights managed research content.
• Replaced legacy code with APIs serving both web and the Bloomberg terminal, and mentored junior engineers as the team grew.

Full Stack Developer

Brickhunter Ltd

• Built a nationwide marketplace matching brick stockists to customers, covering e-commerce, HGV delivery pricing, SEO and a back-office order fulfilment application.

Earlier career

• Team Leader (2008)
• Senior Web Developer (2006 - 2007)
• Web App Developer (2004 - 2005)
• Network Technician (2003)