Assistant Vice President, Site Reliability Engineer

CLS-Group
London

About CLS:

CLS is the trusted party at the centre of the global FX ecosystem. Utilized by thousands of counterparties, CLS makes FX safer, smoother and more cost effective. Trillions of dollars’ worth of currency flows through our systems each day.

Created by the market for the market, our unrivalled global settlement infrastructure reduces systemic risk and provides standardization for participants in many of the world’s most actively traded currencies. We deliver huge efficiencies and savings for our clients: in fact, our approach to multilateral netting shrinks funding requirements by over 96% on average, so clients can put their capital and resources to better use.

CLS products are designed to enable clients to manage risk most effectively across the full FX lifecycle – whether through more efficient processing tools or market intelligence derived from the largest single source of FX executed data available to the market.

Our ambition to make a positive difference starts with our people. Our values underpin everything that we do at CLS and define our working environment:

  • Pivotal purpose
  • Trusted guardian
  • Targeted innovation
  • Facilitate connections
  • Delivering excellence
  • Inclusive culture

Job information

  • Functional title – Site Reliability Engineer
  • Department – Technology
  • Corporate level – Assistant Vice President
  • Report to – Vice President
  • Location - London, onsite 2 days per week

Job Purpose

The role is primarily responsible for developing SRE methodologies and ensuring they are applied to the Cloud hosted environment. In addition, the role will act as a central point of expertise for SRE automation across the Platform Operations team.

Essential Job Functions

  • Responsible for driving the implementation of SRE methodologies within the CLS environment, collaborating closely with other infrastructure teams to optimize infrastructure and deployment processes, focusing on automation and operational excellence.
  • Drives continuous improvement in system observability, alerting, and capacity planning through the definition and implementation of SLA, SLOs & SLIs
  • Define and enhance frameworks for Toil identification, analysis & remediation to identify opportunities to eliminate or automate remediation of recurring tasks and issues
  • Develops secure high-quality production code, and reviews and debugs code written by others.
  • Build out and enhance GitOps capabilities for use in the Cloud hosted environments using tools such as Terraform and Ansible Automation Platform
  • Provide on-call support and escalation for Cloud & Automation related issues ensuring that Production stability is the primary requirement.
  • Ensure risks and stability issues in the cloud hosted environment are understood and addressed where possible through SRE best practices as part of any incident postmortems.

Minimum Education Required

  • Bachelor’s degree or equivalent
  • Industry standard IT certification desired e.g. AWS / Terraform

Minimum Job-Related Experience Required

  • Must have strong technical operational support experience within an infrastructure services team performing on-call duties such as handling tickets, owning incidents & investigating their root cause
  • Minimum of 2 years experience applying SRE methodologies within a support team and an understanding of Service Level metrics associated with this.
  • Strong knowledge of at least 1 scripting language, preferably either Python or Ansible. PowerShell would also be a positive
  • Experience with supporting and building multi environment, multi region platforms with cloud providers such as AWS/GCP and managing them through Infrastructure as Code and GitOps methodologies
  • Experience of Observability/APM tools (e.g. Grafana / Datadog / Dynatrace).
  • Experience of working in a regulated financial services / banking organization.
  • Excellent troubleshooting, analytical, and communication skills with both business and technical staff.

Special Skills/Knowledge

  • Software Development background.
  • Familiar with the ITIL framework.
  • Experience with using Ansible Automation Platform.
  • Possesses a strong service-orientated mindset, can consistently deliver a high level of service to the business.
  • Able to work proactively and provide regular updates to management and stakeholders.

 

Our commitment to employees:

At CLS, we celebrate inclusion and consider this to be one of our strongest assets. We are committed to fostering an environment in which everyone feels comfortable to be who they are, and inclusion is valued. All employees have access to our inclusive benefits, including:

  • Holiday - UK/Asia: 25 holiday days and 3 ‘life days’ (in addition to bank holidays). US: 23 holiday days.
  • 2 paid volunteer days so that you can actively support causes within your community that are important to you.
  • Generous parental leave policies to ensure you can enjoy valuable time with your family.
  • Parental transition coaching programmes and support services.
  • Wellbeing and mental health support resources to ensure you are looking after yourself, and able to support others.
  • Employee Networks (including our Women’s Forum, Black Employee Network and Pride Network) in support of our organisational commitment to embrace and always be learning more about inclusivity.
  • Hybrid working to promote a healthy work/life balance, enabling employees to work collaboratively in the office when needed and work from home when they don’t.
  • Active support of flexible working for all employees where possible.
  • Monthly ‘Heads Down Days’ with no meetings across the whole company.
  • Generous non-contributory pension provision for UK/Asia employees, and 401K match from CLS for US employees.
  • Private medical insurance and dental coverage.
  • Social events that give you opportunities to meet new people and broaden your network across the organisation.
  • Annual flu vaccinations.
  • Discounts and savings and cashback across a wide range of categories including health and retail for UK employees.
  • Discounted Gym membership – Complete Body Gym Discount/Sweat equity program for US employees.
  • All employees have access to Discover – our comprehensive learning platform with 1000+ courses from LinkedIn Learning.
  • Access to frequent development sessions on a number of topics to help you be successful and develop your career at CLS.
Posted 2026-06-21

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