Senior SRE

Pulse Recruit; Greater London; Hybrid; GBP 65,000 - 85,000; Full time

Job summary

A technology organisation in London is seeking a Senior Site Reliability Engineer (SRE) to enhance and secure the reliability of systems for millions of users. You will design automated monitoring systems, manage SLOs, and collaborate with various teams to foster a reliable cloud-native platform. Ideal candidates will have a strong SRE or DevOps background, hands-on cloud experience, and a passion for automation. This hybrid role offers significant engineering challenges in a mission-driven environment.

Qualifications

• Strong background in SRE, DevOps or Platform Engineering.
• Experience running production systems at scale.
• Understanding of observability, monitoring, and reliability.

Responsibilities

• Design and automate monitoring and observability systems.
• Define and manage SLOs, SLIs, and error budgets.
• Support incident response and post-mortems.

Skills

SRE, DevOps or Platform Engineering

Automation

Reliability principles

Cloud infrastructure

Kubernetes

Complex systems debugging

Tools

GCP

AWS

Terraform

Python

Go

Prometheus

Grafana

Datadog

Job description

Location: London (Hybrid – 1 day per week in office)

We are working with a mission-led technology organisation that is continuing to scale a fully cloud-native platform as part of a major initiative. As they move away from traditional data centres, they are investing heavily in building a highly reliable, scalable and observable cloud platform.

As a Senior SRE, you will play a key role in ensuring the reliability and performance of systems that support millions of customers. This is a hands‑on engineering role where you will work closely with platform, cloud and product teams to embed reliability into everything they build.

You will be solving complex engineering problems across distributed systems, helping improve observability, automation and incident response as the platform continues to scale.

Key Responsibilities

• Designing, improving and automating monitoring and observability systems
• Defining and managing SLOs, SLIs and error budgets
• Supporting incident response, root cause analysis and post-mortems
• Working with engineering teams to design resilient, fault‑tolerant systems
• Driving automation across infrastructure, deployments and operations
• Contributing to capacity planning, performance tuning and cost optimisation
• Participating in design reviews to improve reliability and scalability

Tech Environment

• GCP and AWS
• Kubernetes and containerised workloads
• Terraform and Infrastructure as Code
• Prometheus, Grafana, Datadog and modern observability tooling
• CI/CD pipelines and automation tooling
• Python, Go or similar scripting languages
• Distributed systems at scale

About You

• Strong background in SRE, DevOps or Platform Engineering
• Experience running and supporting production systems at scale
• Strong understanding of observability, monitoring and reliability principles
• Hands‑on experience with cloud infrastructure and Kubernetes
• Experience with Infrastructure as Code (Terraform or similar)
• Comfortable debugging complex systems across infrastructure and application layers
• Passionate about automation and improving engineering efficiency

This is a great opportunity to join a team building a platform with real‑world impact, combining complex engineering challenges with a mission to contribute to a future.