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Senior Site Reliability Engineer

Job in Greater London, London, Greater London, W1B, England, UK
Listing for: Cox Purtell Staffing Services
Full Time position
Listed on 2026-02-17
Job specializations:
  • IT/Tech
    Systems Engineer, Cloud Computing, SRE/Site Reliability
Salary/Wage Range or Industry Benchmark: 100000 - 120000 GBP Yearly GBP 100000.00 120000.00 YEAR
Job Description & How to Apply Below
Location: Greater London

Overview

Senior Site Reliability Engineer (AWS Python JS) - Lead Role - UK

Location:

London (Hybrid)

Salary: £100k - £120k per year

Do you have a software engineering background with a passion for infrastructure, and are you ready to take the lead in building a world-class Site Reliability Engineering function from the ground up?

You could be progressing your career in a high-impact, foundational SRE role, joining a successful and profitable Australian start-up as their first dedicated UK SRE hire. You will be the technical and operational lead for critical systems, setting the standard for a team that will be built around you. You ll receive full support and handover from existing UK-based team members to ensure a smooth start.

This role is ideal for an independent, ambitious engineer who is hungry to step into a leadership position within the next few years.

As the Senior Site Reliability Engineer, you will be expected to drive significant, end-to-end improvements across the entire infrastructure lifecycle.

Responsibilities
  • Improving Deployment Speed: Taking the lead on optimising and accelerating software delivery processes.
  • Pipeline Implementation: Designing and implementing robust deployment pipelines and comprehensive test suites.
  • Performance & Monitoring: Designing and building a state-of-the-art performance measurement and monitoring system.
  • Operational Excellence: Improving end-to-end operational practices to enhance system reliability and efficiency.
  • Cost Management: Strategically driving down infrastructure costs for our AWS environment.
  • Security: Helping to improve product security processes and practices.
  • Third-Party Leadership: Acting as the primary technical lead, interacting with our third-party providers in the UK to improve performance, reliability, and cost-effectiveness of integrated services.
About you
  • You are a Software Engineer at heart with a deep-seated passion for infrastructure and systems.
  • You have significant commercial experience with AWS
    .
  • You thrive working independently and are eager to take ownership of complex, high-value projects.
  • You have the ambition and drive to lead a team when the opportunity arises.
  • You must have full working rights in the UK.
What’s in it for you
  • The chance to be the founding member of a new SRE function, with a clear path to leadership.
  • Ownership over the design and implementation of core operational systems.
  • A competitive salary and benefits package.
  • Flexible working arrangements.

Apply now to find out more about this Senior Site Reliability Engineer opportunity and take the next step in your career.

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Position Requirements
10+ Years work experience
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