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 for learning and a continuous‑improvement mindset to join our Electronic Trading (ET) team. As a Site Reliability Engineer, you will be responsible for the design, reliability, and operational excellence of our high‑performance FX trading platform—technology used by major financial institutions around the world. This role plays a key part in ensuring our trading systems remain robust, secure, scalable, and highly available. You will work across complex, mission‑critical environments and drive architectural enhancements that support the future of our platform.  The ET platform is a highly configurable, component‑based FX dealing system delivered as isolated client instances. It supports direct electronic trading via web interfaces, connectivity adaptors, and APIs. The platform integrates seamlessly with market‑rate providers, credit engines, and backend services to enable full straight‑through processing. What You Will Do • Own and maintain Service Level Objectives (SLOs) for the systems you support. •  Continuously measure and improve availability, and overall system health. •  Develop automation to scale systems sustainably and prevent or mitigate service issues. • Partner with development teams to enhance reliability, observability, and release velocity. • Participate in on‑call rotations, incident response, post‑incident reviews, and root‑cause analysis. Promote strong engineering practices to help build, deploy, and operate high‑performance services. •  Act as a key enabler for Cloud migration, working with operations and engineering teams from project inception through to operational readiness. •  Conduct architectural reviews, support operational acceptance testing, and configure Datadog dashboards and metrics. You will need to have experience of DevOps or operating highly available distributed systems, strong scripting and automation skills (Bash,Python,etc). Understanding of Linux and cloud environments. Knowledge of working with financial trading systems an advantage. Minimum qualifications • A Bachelor's degree in computer science, a related technical field involving software/systems engineering, or equivalent practical experience. • Experience with programming languages such as: Java, C#, Python. • Experience with relational databases and SQL • Experience with Infrastructure as Code. • Experience in Observability practices with logging, metrics, tracing, and alerting. • Hands on Experience with one of the following cloud platforms: Azure, AWS, Kubernetes Preferred qualifications • Experience on DevOps concepts and way of working. •  Experience with algorithms and data structures. Career Stage: Senior Associate London Stock Exchange Group (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.