London Stock Exchange Group

Role Summary

We are seeking a Principal Engineer - Cloud Scaling to drive the highest level of engineering excellence and lead our cloud scaling initiatives within our flagship product, World-Check One. This is a unique opportunity to remain hands-on while shaping the technical direction of a platform that must scale to meet aggressive business growth, support the rapid delivery of new product features, and address the high demands of our customers.

This is an individual contributor role, reporting directly to the Engineering Director. You will not have direct people management responsibilities, but will provide technical leadership, mentorship, and influence across teams.

You will be responsible for setting and upholding the highest standards of engineering, ensuring our systems are designed for performance, availability, and scalability. You will diagnose and resolve complex architectural and code-level performance issues, and work closely with Directors, Architects, Developers, and Product Managers to deliver robust, high-quality solutions.

Our primary goal in World-Check One over the next two years is to transform our architecture into a truly Cloud-Native platform, while maintaining aggressive growth and enabling the delivery of new product features that are critical to the future success of the platform. As Principal Engineer, you will balance staying at the forefront of new technologies with a pragmatic approach to solving real-world problems, ensuring our platform can scale efficiently and reliably.

What You'll Be Doing

• Drive the technical vision and hands-on leadership for World-Check One cloud-scaling initiatives, ensuring the platform can transform and scale to support aggressive growth and new product features.
• Set and uphold the highest standards for service, quality, security, and performance, proactively addressing technical debt and prioritising improvements alongside feature delivery.
• Lead innovations to handle rapidly growing volumes, reducing cost and time to market, while enabling the introduction of new capabilities.
• Champion engineering excellence and differentiation to address current and future business needs.
• Lead service improvements for performance, availability, security, privacy, and data residency.
• Guide teams to deliver quality products on time, following Agile software development practices, through technical influence rather than direct management.
• Foster a culture of technical excellence, accountability, teamwork, continuous improvement, and data-driven decision making.
• Collaborate across business areas to solve shared challenges and maximise the impact of engineering efforts.

What You'll Bring

You are:

• A highly innovative and hands-on technical leader with a passion for engineering excellence.
• An energetic team player who can influence and drive outcomes across a matrixed organisation.
• A role model who demonstrates and enforces the highest engineering standards, empowering teams to excel through technical guidance and mentorship.
• Tenacious in your own development and committed to continuous improvement.
• Skilled at creating and delivering technical solutions that meet customer needs, and comfortable leading their implementation in collaboration with business and engineering teams.
• Proud of delivering scalable, reliable solutions and always seeking opportunities to innovate and improve.
• Committed to building strong partnerships internally and externally, acting with integrity and upholding our cultural values.

You have:

• Degree level qualification, preferably in Computer Science or related field or equivalent.
• Proven experience as a principal or lead engineer driving large scale global systems and teams.
• Deep expertise with cloud technologies (predominantly AWS; Azure and GCP experience beneficial).
• Strong background in the Java development stack.
• Demonstrated success building high performance, scalable, and reliable solutions.
• Experience working with and coaching geographically dispersed teams and working in multi-location, multi-time zone environments.
• Excellent communication and presentation skills, with the ability to build relationships and influence at all organisational levels.
• Exceptional analytical and problem-solving skills.
• Ability to thrive in a fast-paced, high-pressure environment managing multiple projects with tight deadlines.
• Experience with ML/AI technologies is a plus.

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 is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

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

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