Director, Principal Engineer - Applied AI
AI summary of the role
Barclays seeks a Director-level Principal Engineer to lead AI/ML strategy and hands-on architecture for customer-facing and operational AI solutions in banking.
No longer in the current catalog. Last included 2026-09-09. Check the employer’s posting for availability.
What you’ll do
- Serve as primary code-level reviewer and hands-on architect for complex AI/ML systems and frameworks.
- Define and enforce technology roadmaps, best practices, and standards for AI/ML adoption.
- Conduct research on context/prompt engineering and translate into reusable frameworks.
- Architect data pipelines and MLOps workflows for model training, tuning, and production deployment.
What you’ll bring
- Bachelor’s degree in computer science, engineering, mathematics, or related discipline.
- 12+ years in Software Engineering, Data Science, or Analytics with 5+ years in AI/ML engineering.
- Deep understanding of LLMs, LLM training, and fine-tuning.
- Hands-on experience with GenAI/AgenticAI frameworks (LangGraph, LangChain, CrewAI, etc.) and MCP/A2A protocols.
Technologies
LLM · LangGraph · LangChain · CrewAI · MCP · A2A · Python · Kubernetes · Docker · MLOps
About Barclays
Global universal bank spanning UK retail, US consumer cards, corporate banking, an investment bank, and private/wealth management, serving millions of customers across ~40 countries.
Public · 5000+ people
Source and classification
Internal deployment & tooling · Evidence for this classification:
coveted domains, Banking & Financial Services Industry? Join our innovative team to build and deliver elevated customer experiences and streamline business operations with cutting-edge AI-driven solutions. As a Principal Engineer of Advanced Technologies, you will collaborate with multiple high stakeholders, senior leaders, talented engineers, and scientists, leveraging your deep expertise to shape AI/ML strategy on complex technical projects. You will serve as the deep technical expert and hands-on architect responsible for defining technology roadmaps, best practices, and standards that equip LLMs with domain-specific knowledge and execution capabilities. Key Responsibilities: Serve as the primary code-level reviewer and hands-on architect for the most complex AI/ML systems and frameworks. Define and enforce technology roadmaps, best practices, strategies, and standards for AI/ML
More from the job description
Job Description Purpose of the role To drive technical excellence and innovation by leading the design and implementation of robust software solutions, providing mentorship to engineering teams, fostering cross-functional collaboration, and contributing to strategic planning to ensure the delivery of high-quality solutions aligned with business objectives. Accountabilities Provision of guidance and expertise to engineering teams to ensure alignment with best practices and foster a culture of technical excellence. Contribution to strategic planning by aligning technical decisions with business goals, anticipating future technology trends, and providing insights to optimize product roadmaps. Design and implementation of complex, scalable, and maintainable software solutions, considering long-term viability and business objectives. Mentoring and coaching to junior and mid-level engineers to foster professional growth and knowledge sharing, elevating the overall skillset and capabilities of the organization. Collaboration with business partners, product managers, designers, and other stakeholders to translate business requirements into technical solutions and ensure a cohesive approach to product development. Innovation within the organization by identifying and incorporating new technologies, methodologies, and industry practices into the engineering process. Director Ex [... source excerpt omitted ...] decisions or recommendations within own area. Negotiate with and influence stakeholders at a senior level both internally and externally. Act as principal contact point for key clients and counterparts in other functions/ businesses divisions. Mandated as a spokesperson for the function and business division. All Senior Leaders are expected to demonstrate a clear set of leadership behaviours to create an environment for colleagues to thrive and deliver to a consistently excellent standard. The four LEAD behaviours are: L – Listen and be authentic, E – Energise and inspire, A – Align across the enterprise, D – Develop others. All colleagues will be expected to demonstrate [... source excerpt omitted ...] They will also be expected to demonstrate the Barclays Mindset – to Empower, Challenge and Drive – the operating manual for how we behave. Overview: Are you looking to redefine customer experience by bending the curve of innovation in one of the most coveted domains, Banking & Financial Services Industry? Join our innovative team to build and deliver elevated customer experiences and streamline business operations with cutting-edge AI-driven solutions. As a Principal Engineer of Advanced Technologies, you will collaborate with multiple high stakeholders, senior leaders, talented engineers, and scientists, leveraging your deep expertise to shape AI/ML strategy on complex techn
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