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Principal Engineer, Applied AI

Bengaluru, India; Pune, India

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Key information

Date live: 01/05/2026

Business Area: GTIS

Area of Expertise: Technology

Contract: Permanent

Reference Code: JR-0000087546

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It’s happening at Barclays.

Be a part of a place where challenges are measured in billions, qubits and nanoseconds. Build your career in an environment where we’re advancing machine learning, leveraging blockchains, and harnessing FinTech. Working in Barclays technology, you’ll reimagine possibilities: learning and innovating to solve the challenges ahead, delivering for millions of customers.
We are shaping the future of financial technology.
Why not join us and make it happen here?

Where will you be located?

Explore location

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 Applied AI, 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 adoption across the organization.
  • Conduct and guide research on context/prompt engineering techniques to translate successful research into reusable engineering frameworks for the wider team.
  • Architect and maintain robust data pipelines and data processing workflows for model training and model tuning, utilizing cloud services for scalability and efficiency.
  • Implement and champion MLOps tools and practices, ensuring seamless integration of machine learning models and LLMs into production environments.
  • Lead the effort to agentize existing systems (front-end & back-end apps) by incorporating agentic frameworks/stacks and integrating them via A2A, MCP protocol.
  • Partner with cross-functional teams to integrate AI/ML solutions into products and services.
  • Mentor and coach junior and senior engineers on advanced AI/ML techniques, best practices, and architecture design.

Required Qualifications:

  • A Bachelor’s degree (or above) in computer science, engineering, mathematics, or a related discipline.
  • 12+ years of experience in Software Engineering, Data Science, or Analytics with 5+ years of experience in AI/ML engineering or related fields.
  • Demonstrated experience designing and implementing highly scalable, production-grade AI/ML platforms and systems.
  • Deep understanding of Large Language Models (LLMs), LLM training & fine tuning.
  • Hands-on experience in GenAI and AgenticAI frameworks such as LangGraph/LangChain, CrewAI, Strands SDK, Google ADK, etc. Familiarity on working with MCP and A2A protocols.
  • Expertise in various AI/ML techniques, such as deep learning, natural language processing, reinforcement learning, and large language models.
  • Proficiency in Python, R, or other programming languages for data analysis and AI/ML development.
  • Experience with DevOps and CI/CD tools and practices, such as Git, Jenkins, Docker, Kubernetes, etc..

Preferred Qualifications:

  • PhD in computer science, engineering, mathematics, statistics, or a related discipline.
  • Experience in establishing and enforcing AI/ML best practices, standards, and ethics.
  • Knowledge of banking, financial products and services.

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 Expectations

  • To manage a business function, providing significant input to function wide strategic initiatives. Contribute to and influence policy and procedures for the function and plan, manage and consult on multiple complex and critical strategic projects, which may be business wide..
  • They manage the direction of a large team or sub-function, leading other people managers and embedding a performance culture aligned to the values of the business. Or for an individual contributor, they lead organisation wide projects and act as deep technical expert and thought leader, identifying new ways of working and collaborating cross functionally. They will train, guide and coach less experienced specialists and provide information affecting long term profits, organisational risks and strategic decisions..
  • Provide expert advice to senior functional management and committees to influence decisions made outside of own function, offering significant input to function wide strategic initiatives.
  • Manage, coordinate and enable resourcing, budgeting and policy creation for a significant sub-function.
  • Escalates breaches of policies / procedure appropriately.
  • Foster and guide compliance, ensure regulations are observed that relevant processes in place to facilitate adherence.
  • Focus on the external environment, regulators, or advocacy groups to both monitor and influence on behalf of Barclays, when appropriate.
  • Demonstrate extensive knowledge of how the function integrates with the business division / Group to achieve the overall business objectives.
  • Maintain broad and comprehensive knowledge of industry theories and practices within own discipline alongside up-to-date relevant sector / functional knowledge, and insight into external market developments / initiatives.
  • Use interpretative thinking and advanced analytical skills to solve problems and design solutions in often complex/ sensitive situations.
  • Exercise management authority to make significant decisions and certain strategic 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 the Barclays Values of Respect, Integrity, Service, Excellence and Stewardship – our moral compass, helping us do what we believe is right. They will also be expected to demonstrate the Barclays Mindset – to Empower, Challenge and Drive – the operating manual for how we behave.

Barclays welcomes applications from all candidates and is committed to ensuring reasonable adjustments (accommodations) are put in place to allow for a fair and inclusive recruitment process. For more information and how to request one, please review Adjustments to the recruitment process.

We’re a global, vital and highly respected financial organisation with an inspiring Purpose. Operating in 39 countries and employing around 100,000 people across the world, we help communities, individuals and businesses thrive. And we’ve created financial solutions and technology that the world now takes for granted. A career with us can offer incredible variety, depth and breadth of experience, and the chance to learn from some of the best minds in technology and finance.

To find out more about Barclays' strategy please click here.

We are an equal opportunity employer and opposed to discrimination on any grounds. It is the policy of Barclays to ensure equal employment opportunity without discrimination or harassment on the basis of race, colour, creed, religion, national origin, alienage or citizenship status, age, sex, sexual orientation, gender identity or expression, marital or domestic/civil partnership status, disability, veteran status, genetic information, or any other basis protected by law.

Barclays is required by law to confirm that you have the Legal Right to Work in any role that you apply for. If you currently hold a work visa sponsored by Barclays, or you would require sponsorship from Barclays, you must declare this as part of your application. Sponsored visas are role and entity specific and any changes must be reviewed. It is important that you ensure you are working on the correct visa at all times. Failure to accurately disclose your visa status or Legal Right to Work may result in your application or any employment offer being withdrawn at any time.

Who succeeds in
Tech at Barclays?

For a career with us, you need to be prepared to take big steps forward, curious to face the challenges ahead, and driven to focus on the outcomes. We need people with the Barclays mindset to make it happen here.

Qualities we look for:motivator, supporter, connector, driver, communicator, transformer, maker, observer

What you'll get in return

Competitive holiday allowance
Life assurance
Private medical care
Pension contribution

Our technology

Supporting our 48 million customers and clients worldwide takes a lot of forward thinking. It means harnessing technology to support the economy. It means making a difference to people’s lives. And it requires the maintenance and development of a global, technological infrastructure. At Barclays, technology helps us keep transactions moving, manages data, and protects our customers. Join a world where your work creates unique moments of impact. Make it happen here.

Learn more about Barclays locations

Across our campuses, we offer modern workspaces, collaborative areas, and state-of-the-art meeting rooms. Facilities include wellness rooms, on-site cafeterias, fitness centers, and tech-equipped workstations. Designed for innovation and comfort, they support a dynamic and productive work environment.

Gain access to wellness rooms, gyms and mental health support.

Our welcoming and inclusive culture supports you to bring your whole self to work, explore your potential and pursue your passions.

Modern spaces designed for teamwork and brainstorming.

There’s so much more than work to involve and engage you on campus. From socialising to sports, from community events to volunteering.

Learn more about Barclays locations

Across our campuses, we offer modern workspaces, collaborative areas, and state-of-the-art meeting rooms. Facilities include wellness rooms, on-site cafeterias, fitness centers, and tech-equipped workstations. Designed for innovation and comfort, they support a dynamic and productive work environment.

Health and wellness

Gain access to wellness rooms, gyms and mental health support.

A place where you can belong

Our welcoming and inclusive culture supports you to bring your whole self to work, explore your potential and pursue your passions.

Collaborative Areas

Modern spaces designed for teamwork and brainstorming.

More than work

There’s so much more than work to involve and engage you on campus. From socialising to sports, from community events to volunteering.

Barclays

Working flexibly

We’re committed to providing a supportive and inclusive culture and environment for you to work in. This environment recognises and supports your personal needs, alongside the professional needs of our business. If you'd like to explore flexible working arrangements, please discuss this with the hiring manager. Your request will be reviewed in-line with the requirements of the role/business needs of the team.

Hybrid working

We have a structured approach to hybrid working, where colleagues work at an onsite location on fixed, ‘anchor’, days, as set by the business area. Please discuss the working pattern requirements for the role you are applying for with the hiring manager. Please note that working arrangements may be subject to change on reasonable notice to ensure we meet the needs of our business.

Barclays is built on an international scale.

Our geographic reach, our wide variety of functions, businesses, roles and locations reflect the rich diversity of our worldwide customer base. All of which means we offer incredible variety, depth and breadth of experience. And the chance to learn from a globally diverse mix of colleagues, including some of the very best minds in banking, finance, technology and business. Throughout, we’ll encourage you to embrace mobility, exploring every part of our operations as you build your career.

Find more information

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