Senior Linux Administrator

Let's be #BrilliantTogether

Please note that due to the holiday period, we will respond to applications in early January.

Advance your career with the leading provider of corporate governance and responsible investment solutions. Institutional Shareholder Services (ISS) – part of ISS STOXX, empowers investors and companies to build sustainable financial and social value by providing high-quality data, analytics, and insight.

Our clients rely on ISS's expertise and capital stewardship to help them make informed investment decisions, and our people are equally passionate about positively impacting the communities where we live and work.

If you want to be a part of an exciting work culture that values innovation, collaboration, and provides you with the support you need to make a difference, we'd love to hear from you

As a Senior Linux Administrator, you will be part of a global team managing and optimising a large-scale Red Hat/Ubuntu Linux infrastructure across multiple regions. You'll design, implement, and maintain mission-critical systems, ensuring reliability, security, and scalability. This role offers exposure to cutting-edge technologies, cloud platforms, and automation tools. This role includes responsibilities for interacting with internal customers at ISS STOXX and participating in engineering projects from the design phase through implementation and support.

Key Responsibilities

• Container Platforms: Design, deploy, and support Docker/Podman, Kubernetes (K8S/K3S), and OpenShift clusters
• Cloud & Data Centre: Operate and optimise infrastructure across on-prem and Google Cloud Platform (GCP), including installations, upgrades, and migrations
• Security & Resilience: Implement Linux hardening, patching, access controls, backup/restore, and disaster recovery/BCP procedures
• Automation & IaC: Build and maintain configuration management and Infrastructure as Code using Ansible and Terraform (GitOps workflows preferred)
• Web Stack & Services: Support LAMP and related web technologies; maintain CI/CD and release processes in coordination with engineering teams
• Virtualisation & Compute: Plan and execute transitions for Windows/Linux workloads in VMware environments; optimise CPU/latency/throughput and storage strategies
• Observability & Compliance: Maintain monitoring/alerting frameworks; ensure adherence to ISS IT policies and standards
• Collaboration & Support: Partner with internal customers, lead engineering projects from design to production, participate in global on-call rotation

Required Qualifications

• 5-8 years administering Enterprise Linux (Red Hat/Ubuntu strongly preferred), including performance tuning, networking, storage, and security

• Hands-on GCP experience:

• Operating and securing workloads on Google Cloud Platform (e.g., Compute Engine, GKE, Cloud Storage, VPC networking, IAM)

• Observability with Cloud Monitoring/Cloud Logging; cost and capacity awareness
• Containers & Orchestration: Production experience with Kubernetes/OpenShift and container runtimes (Docker/Podman)
• Automation & IaC: Strong proficiency in Ansible and Terraform (module design, state management, workspace hygiene)
• Virtualisation & Hardware: Experience with VMware, Cisco/Fortinet networking, HPE & UCS servers, and Pure Storage or comparable platforms
• Resilience: Experience implementing DR/BCP strategies and backup/restore tooling
• Communication: Clear documentation and stakeholder communication; ability to work with distributed/global teams in English

Preferred Qualifications:

• DevOps practices and CI/CD (e.g., GitLab CI/GitHub Actions), artefact registries, and pipeline hardening
• CyberArk Privileged Access Management administration
• Red Hat product suite (e.g., RHS, RHGS, RHDS)
• Additional config management exposure (Puppet/Chef/Salt) alongside primary Ansible experience
• Multi-cloud familiarity (AWS/Azure) and SRE practices (SLIs/SLOs, error budgets)
• GCP certification, such as Professional Cloud Engineer

What You Can Expect from Us

At ISS STOXX, our people are our driving force. We are committed to building a culture that values diverse skills, perspectives, and experiences. We hire the best talent in our industry and empower them with the resources, support, and opportunities to grow—professionally and personally.

Together, we foster an environment that fuels creativity, drives innovation, and shapes our future success.

Let's empower, collaborate, and inspire.

Let's be #BrilliantTogether.

About ISS STOXX

ISS STOXX GmbH is a leading provider of research and technology solutions for the financial market. Established in 1985, we offer top-notch benchmark and custom indices globally, helping clients identify investment opportunities and manage portfolio risks. Our services cover corporate governance, sustainability, cyber risk, and fund intelligence. Majority-owned by Deutsche Börse Group, ISS STOXX has over 3,400 professionals in 33 locations worldwide, serving around 6,400 clients, including institutional investors and companies focused on ESG, cyber, and governance risk. Clients trust our expertise to make informed decisions for their stakeholders' benefit.

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Institutional Shareholder Services ("ISS") is committed to fostering, cultivating, and preserving a culture of diversity and inclusion. It is our policy to prohibit discrimination or harassment against any applicant or employee on the basis of race, color, ethnicity, creed, religion, sex, age, height, weight, citizenship status, national origin, social origin, sexual orientation, gender identity or gender expression, pregnancy status, marital status, familial status, mental or physical disability, veteran status, military service or status, genetic information, or any other characteristic protected by law (referred to as "protected status"). All activities including, but not limited to, recruiting and hiring, recruitment advertising, promotions, performance appraisals, training, job assignments, compensation, demotions, transfers, terminations (including layoffs), benefits, and other terms, conditions, and privileges of employment, are and will be administered on a non-discriminatory basis, consistent with all applicable federal, state, and local requirements.