Role Responsibilities
Unix/Linux Platform Reliability: Ensure the reliability, availability, and performance of Unix/Linux platforms by proactively monitoring, optimizing, and improving system stability using SRE methodologies.
Operational Excellence & Incident Response: Lead incident response for high‑severity issues, perform root-cause analysis (RCA), and implement permanent fixes to prevent recurrence. Partner with L2 teams on escalated issues to minimize business impact.
Infrastructure Automation: Design and implement automation for system provisioning, configuration, patching, and operational workflows to reduce toil and improve service consistency.
Observability & Monitoring: Enhance observability through metrics, logging, and alerting solutions (Datadog, Prometheus, etc.), enabling early detection of performance degradation and system anomalies.
Capacity & Performance Engineering: Continuously assess system capacity, forecast resource needs, and optimize performance to support business growth and future scalability.
Platform Engineering: Contribute to the design, enhancement, and lifecycle management of Unix/Linux platform services, ensuring they meet reliability, security, and performance standards.
Security & Compliance: Implement system hardening, patching, vulnerability remediation, and compliance controls to safeguard platform integrity and meet organizational security requirements.
Project & Change Delivery: Support and lead infrastructure and platform-related initiatives, ensuring delivery against availability targets, timelines, and SRE best practices.
Documentation & Knowledge Sharing: Maintain accurate runbooks, architectural documentation, and operational procedures. Promote knowledge-sharing within the team through training, mentoring, and collaborative problem-solving.
Educational Qualifications
- Bachelor’s degree in Computer Science, Information Technology, Engineering, or a related field.
- MSc degree in a relevant discipline will be an added advantage.
Technical Skills
- Strong expertise in Unix/Linux administration (RHEL, AIX, Solaris).
- Solid understanding of OS internals, file systems, kernel parameters, process management, and performance tuning.
- Strong shell scripting skills (Bash, ksh) and ability to troubleshoot complex OS-level issues.
- Strong programming/scripting skills in Python, Perl, etc.
- Proven ability to automate operational tasks and reduce toil.
- Hands-on experience with automation tools such as Ansible, Terraform.
- Practical experience with monitoring and observability platforms (Datadog, Nagios, etc).
- Ability to create SLIs, SLOs, dashboards, alerts, and reliability indicators.
- Knowledge of infrastructure-as-code tools and platform engineering principles.
- Experience with virtualisation technologies, SAN Infrastructure, Backup & Restore and underlying hardware architectures.
- Experience with system hardening, patching, and vulnerability remediation.
- Familiarity with compliance and security frameworks.
- Strong experience in on-call operations, incident response, RCA creation, and implementation of permanent fixes.
- Knowledge of ITIL incident, problem, and change management best practices.
Soft Skills & Competencies
- Excellent analytical and problem‑solving skills for complex infrastructure issues.
- Strong communication and collaboration skills with cross-functional teams.
- Ability to manage time, prioritize tasks, and work independently under pressure.
- Mindset aligned with SRE culture: reliability, automation, continuous improvement, and data-driven decisions.
- Willingness to participate in 24/7 on-call rotation for critical systems.
Career Stage:
Senior AssociateLondon 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.
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What We Do
LSEG (London Stock Exchange Group) is a diversified international markets infrastructure business —earning our clients’ trust for over 300 years. That legacy of customer-focused excellence ensures that you can rely on our expertise in capital formation, intellectual property and risk and balance sheet management. As global leaders in financial indexing, benchmarking and analytic services, we offer unrivalled access to international capital markets. Our high-performance technology solutions enable companies worldwide to access funds for growth and development. And with our Data & Analytics, Capital Markets and Post Trade divisions, we provide a comprehensive, integrated suite of trusted financial market infrastructure services that help our customers pursue—and achieve—their ambitions. You can count on our open access model for unparalleled partnership, flexibility, stability, and support across all of our businesses. That’s how we make a difference— ensuring people can meet their potential—worldwide.
