Team Lead, Site Reliability Engineering

Company ProfileLSEG (London Stock Exchange Group) is a world-leading financial markets infrastructure and data business.  We are dedicated, open-access partners with a commitment to excellence in delivering services across Data & Analytics, Capital Markets, and Post Trade. Backed by three hundred years of experience, innovative technologies, and a team of over 23,000 people in 70 countries, our purpose is driving financial stability, empowering economies, and enabling customers to create sustainable growth. Role ProfileWe are looking for a highly skilled Team Lead, Site Reliability Engineering within our Corporate Technology (CT) division. This key role leads our External Digital team responsible for the administration and management of various mission-critical applications. As a Team Lead, you will guide a team of engineers in ensuring the high availability, performance, and security of our application infrastructure. The ideal candidate will bring strong technical expertise, excellent leadership skills, and a passion for reliability engineering. Lead, Site Reliability Engineering– Corporate Technology Company ProfileLSEG (London Stock Exchange Group) is a world-leading financial markets infrastructure and data business.  We are dedicated, open-access partners with a commitment to excellence in delivering services across Data & Analytics, Capital Markets, and Post Trade. Backed by three hundred years of experience, innovative technologies, and a team of over 23,000 people in 70 countries, our purpose is driving financial stability, empowering economies, and enabling customers to create sustainable growth. Role ProfileWe are looking for a highly skilled Lead, Site Reliability Engineering within our Corporate Technology (CT) division. This key role leads our External Digital team responsible for the administration and management of various mission-critical applications. As a Tech Lead, you will guide a team of engineers in ensuring the high availability, performance, and security of our application infrastructure. The ideal candidate will bring strong technical expertise, excellent leadership skills, and a passion for reliability engineering. Key ResponsibilitiesCollaborate with development and infrastructure teams to design, implement, and maintain scalable, secure environments. Monitor, troubleshoot, and resolve system performance issues, providing root cause analysis for incidents and outages.Automate tasks and optimize processes through scripting and tools like Shell, Python, and PowerShell to improve system efficiency.Develop and maintain disaster recovery plans, ensuring regular testing and drills.Oversee application deployments, configuration changes, and system maintenance (patches, upgrades).Provide technical mentorship and guidance to team members, fostering professional development.Maintain documentation for system configurations, processes, and procedures.Collaborate with vendors, partners, and Adobe support to resolve platform issues and ensure smooth integrations.Participate in incident, change, and problem management processes, ensuring adherence to established protocols.Stay up to date with industry trends and technologies, ensuring that LSEG's infrastructure remains competitive and secure.Availability for escalation via on-call support members, when necessary, in a 24x7 on-call weekly rotation. Technical Skills6+ years of hands-on experience designing, deploying, and managing cloud infrastructures, primarily in AWS, including VPC design, IAM policies, EC2/ECS/EKS management, CloudFormation, and cost optimization.6+ years of experience in Linux systems engineering, with deep expertise in performance tuning, system hardening, high availability, and security best practices across large-scale distributed environments.Strong leadership in implementing and maintaining highly reliable, scalable, and observable cloud architectures, with deep understanding of SRE principles: SLIs, SLOs, error budgets, and incident response protocols.Extensive experience in automation and Infrastructure-as-Code (IaC) using tools like Terraform, Ansible, and CloudFormation, enabling consistent and repeatable infrastructure provisioning.Advanced scripting and automation skills with Python, Bash/Shell, and PowerShell, driving efficiency in operations, system automation, and custom tooling.In-depth knowledge of DevOps practices and CI/CD pipelines, including version control (Git), CI tools (Jenkins, GitLab CI), artifact management (Nexus), and continuous testing and deployment strategies.Experienced in monitoring, observability, and alerting using platforms such as Prometheus, Grafana, Datadog, New Relic, and Splunk, with a focus on proactive issue detection and RCA.Strong proficiency in web technologies and middleware, including Java-based applications, Apache/Nginx, HTTP protocols, caching strategies, and performance tuning.Hands-on experience with DNS management, SSL/TLS/PKI infrastructure, and ITSM tools like Jira, Confluence, and ServiceNow to manage change, incidents, and knowledge.Proven track record of leading cross-functional SRE and DevOps teams, driving operational excellence, implementing reliability best practices, and mentoring engineers.Good to have: Experience with Adobe Experience Manager (AEM/AEM-admin), supporting content management system administration, deployment, and troubleshooting in enterprise environments.Preferred QualificationsStrong organizational, time management, and problem-solving skills.Ability to work independently and collaboratively in a fast-paced environment.Strong communication skills in English, both written and spoken.Knowledge of financial markets and industry trends is a plus.Relevant AWS, AEM certifications are a benefit.  EducationBS/MS in Computer Science, Software Engineering, or a related STEM field (preferred). 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.