Senior Lead Reliability Engineer

About Us 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. It’s how we’ve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services – and our open‑access model – we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity. Our People 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. Our workplace generates an enriching and rewarding experience for our people and customers alike. Our vision is to build an inclusive culture in which everyone feels encouraged to fulfil their potential. We know that real personal growth cannot be achieved by simply climbing a career ladder – which is why we encourage and enable a wealth of avenues and interesting opportunities for everyone to broaden and deepen their skills and expertise. As a global organisation spanning 70 countries and one rooted in a culture of growth, opportunity, diversity and innovation, LSEG is a place where everyone can grow, develop and fulfil your potential with meaningful careers! Role Summary We are evolving our Reliability Engineering team to move beyond support and operations. As a Senior Engineer in Site Reliability, you will be part of a diverse and inclusive organization that has full ownership of the availability, performance, and scalability of one of the most critical shared services at LSEG. We are looking for people with a passion to learn, and who bring a continuous improvement mentality to our team! SREs maintain Service Level Objectives for the systems they own. Constantly measuring and improving availability, latency, and overall system health is at the core of our team's purpose. You will be writing automation to scale systems sustainably, prevent service issues, or when they occur, quickly recover service alongside partner with development teams to improve system reliability, observability, and release velocity. You will participate in on‑call rotations, incident response, post‑mortems, and root cause analysis and resolution and be a vocal advocate of strong/sound engineering practices that allow us to build, deploy, and run scalable, reliable, and performant services. Be part of continuous learning and development culture. What You'll Be Doing Leading projects priorities, deadlines, and outcomes. Utilising deep knowledge of site reliability, software engineering, programming languages, tooling, frameworks, infrastructure and systems for each task. Leading designs of software components, systems, and features to improve the availability, scalability, latency, and efficiency of LSEG’s services. Leading sustainable incident response and production improvements for LSEG. Providing mentorship and advice to other team members on leading availability and performance of critical services, building automation to prevent problem recurrence, and building automated responses for non‑exceptional service conditions. Mentoring and training other team members on design techniques and coding standards, and cultivate innovation and collaboration. Writing and reviewing highly optimised and accurate code for LSEG products and solutions and provides feedback and suggested improvements to team members. Partnering with architects to decompose a solution for technology systems and products. Proactively building and applying relevant domain knowledge that may relate to workflows, data pipelines, business policies, configurations and constraints. Supporting essential processes while ensuring high quality standards are met. What You'll Bring A Bachelor's degree in computer science, a related technical field involving software/systems engineering, or equivalent practical experience. Object Oriented programming languages such as: Java, C#, Python, or Go. Unix/Linux and Windows operating systems. Hands‑on experience with one of the following cloud platforms: Azure, AWS, or GCP. DevOps concepts and way of working. Experience with algorithms and data structures. Observability practices with logging, metrics, tracing, and alerting. Infrastructure as Code. Understanding of identity and access management, and application security. We use Datadog and BigPanda for our observability stack, Terraform for our cloud infrastructure, and EntraID as our IAM solutions but we're very open to incorporating your experience with any other tools. Does this sound like a challenge you'd be interested in taking on? Join us! Career Stage Manager LSEG Information 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. Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject. If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice. #J-18808-Ljbffr LSEG