Principal AI Engineer in London

Principal AI Engineer in London

London Full-Time 72000 - 108000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Design and develop innovative AI solutions that push the boundaries of technology.
  • Company: Join LSEG, a global leader in financial markets and data services.
  • Benefits: Enjoy competitive pay, healthcare, and opportunities for personal growth.
  • Why this job: Make a real impact in AI while working with cutting-edge technologies.
  • Qualifications: 12+ years in software development, with expertise in AI and programming languages.
  • Other info: Be part of a diverse team that values innovation and collaboration.

The predicted salary is between 72000 - 108000 £ per year.

LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs.

People are at the heart of what we do and drive the success of our business. Our culture of connecting, creating opportunity and delivering excellence shape how we think, how we do things and how we help our people fulfil their potential. We embrace diversity and actively seek to attract individuals with unique backgrounds and perspectives. We break down barriers and encourage teamwork, enabling innovation and rapid development of solutions that make a difference.

ROLE SUMMARY: The Principal Engineer is a senior technical expert responsible for designing, developing, and delivering high-quality software solutions. This role emphasizes deep technical proficiency, innovation, and hands-on development, including advanced work in AI technologies such as prompt engineering and large language models (LLMs). The ideal candidate will serve as a technical authority, proving concepts with the latest AI technology or practices in the form of a spike or proof of concept. This person will be responsible for pushing the boundaries of what is possible, turning vision or concept into a technical solution, driving best practices and ensuring scalability, performance, and security across systems.

WHAT YOU'LL BE DOING:

  • Software Development: Design and implement complex, scalable, and secure applications. Write clean, efficient, and maintainable code in Java, Python, and other high-level languages.
  • Technical Expertise: Provide architectural guidance and ensure adherence to best practices. Optimize system performance and troubleshoot critical issues.
  • AI Development: Develop and refine prompt engineering strategies for LLM-based applications. Integrate and optimize Large Language Models (LLMs) into products and workflows. Collaborate with AI teams to improve model performance and user experience.
  • Innovation & Research: Stay current with emerging technologies, frameworks, and AI advancements. Prototype and evaluate new tools and methodologies for adoption.
  • Collaboration: Work closely with product managers, QA, and other developers to deliver high-quality solutions. Participate in code reviews and contribute to technical documentation.
  • Process & Quality: Advocate for automation, testing, and continuous integration practices. Ensure compliance with security and regulatory standards.

WHAT YOU'LL BRING:

  • 12+ years in software development, with at least a year in AI Development.
  • Extensive experience in software development and system architecture.
  • Proven ability to deliver complex projects with high technical standards.
  • Strong technical background in Java, Python, and/or other high-level programming languages.
  • Expertise in designing scalable and secure systems.
  • Hands-on experience with AI tools and frameworks, including: Prompt Engineering for LLMs (e.g., OpenAI GPT, Anthropic Claude), Model fine-tuning and deployment, AI integration into enterprise applications, Prompt management tools (Langfuse), Knowledge of vector databases, embeddings, and retrieval-augmented generation (RAG).
  • Experience with cloud platforms (AWS, Azure, GCP).
  • Familiarity with CI/CD pipelines and modern development tools.

Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

Principal AI Engineer in London employer: London Stock Exchange Group

LSEG is an exceptional employer that prioritises innovation, diversity, and personal growth within a collaborative work culture. With a commitment to excellence and a global presence, employees benefit from tailored support, including healthcare and wellbeing initiatives, while having the opportunity to engage in meaningful projects that drive financial stability and empower economies. Join us in London, where your unique contributions will be valued, and you can thrive in a dynamic environment dedicated to fostering talent and creativity.
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Contact Detail:

London Stock Exchange Group Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Principal AI Engineer in London

✨Tip Number 1

Network like a pro! Reach out to people in your field, especially those at LSEG. A friendly chat can open doors that a CV just can't.

✨Tip Number 2

Show off your skills! If you’ve got a project or a portfolio, bring it along to interviews. It’s a great way to demonstrate your expertise in AI and software development.

✨Tip Number 3

Prepare for the technical grill! Brush up on your coding skills and be ready to tackle some real-world problems during interviews. Practice makes perfect!

✨Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people at LSEG. Plus, we love seeing candidates who take that extra step!

We think you need these skills to ace Principal AI Engineer in London

Software Development
Java
Python
AI Development
Prompt Engineering
Large Language Models (LLMs)
System Architecture
Scalable Systems Design
Cloud Platforms (AWS, Azure, GCP)
CI/CD Pipelines
Model Fine-Tuning
AI Integration
Technical Documentation
Collaboration

Some tips for your application 🫡

Tailor Your Application: Make sure to customise your CV and cover letter for the Principal AI Engineer role. Highlight your experience with AI technologies, especially prompt engineering and LLMs, to show us you’re the right fit!

Showcase Your Technical Skills: We want to see your technical prowess! Include specific examples of projects where you've designed scalable systems or worked with Java and Python. This is your chance to shine!

Be Clear and Concise: When writing your application, keep it clear and to the point. Use bullet points for easy reading and make sure to highlight your achievements in a way that’s easy for us to digest.

Apply Through Our Website: Don’t forget to apply through our website! It’s the best way for us to receive your application and ensures you’re considered for the role. We can’t wait to hear from you!

How to prepare for a job interview at London Stock Exchange Group

✨Know Your AI Stuff

Make sure you brush up on your knowledge of AI technologies, especially prompt engineering and large language models. Be ready to discuss your hands-on experience with these tools and how you've integrated them into previous projects.

✨Showcase Your Problem-Solving Skills

Prepare to share specific examples of complex problems you've solved in software development. Highlight your approach to optimising system performance and troubleshooting critical issues, as this will demonstrate your technical expertise.

✨Emphasise Collaboration

Since teamwork is key at LSEG, be prepared to talk about how you've worked with product managers, QA teams, and other developers. Share experiences where collaboration led to successful project outcomes, showcasing your ability to work well in a team.

✨Stay Current with Trends

LSEG values innovation, so show that you're keeping up with emerging technologies and frameworks. Discuss any recent advancements in AI that excite you and how you might apply them in the role, demonstrating your commitment to continuous improvement.

Principal AI Engineer in London
London Stock Exchange Group
Location: London

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