Senior Site Reliability Engineer

LocationLondon Wall

Typefull-time

SenioritySenior

DepartmentEngineering

Company size10,000+ people

First seenOct 6, 2026 · 5d ago

Verified live1d ago

At a glanceSummarised by Seekless from the posting.

Advanced Terraform: expertise in modules, providers, state management, lifecycle controls, drift detection, safe refactoring, and remote state (S3, locking, cross-stack dependencies)

AWS Operations: hands-on experience managing production, multi-account, multi-region AWS environments across ECS, RDS, ALB, VPC, IAM, Route53, ECR, S3, Lambda, DynamoDB, SQS, Secrets Manager, KMS, and CloudWatch

GitHub Actions CI/CD: experience building and troubleshooting reusable workflows, OIDC authentication, approval gates, runners, Terraform deployments, application deployments, and migration pipelines

ECS Fargate & Containers: strong knowledge of Docker, ECR, ECS task definitions/services, IAM roles, health checks, autoscaling, ALB integration, and deployment rollbacks

AWS Networking & Security: proficiency in VPCs, networking, ALBs, Route53, ACM/TLS, IAM, OIDC, Secrets Manager, KMS, and cloud security best practices

Incident Response & Observability: skilled in troubleshooting using logs, metrics, alarms, deployment history, root cause analysis, rollback decisions, and operational runbooks

Linux & Automation: strong Linux and Git fundamentals with Bash/Python scripting for AWS CLI automation, CI/CD, and operational tooling

AI Tooling Deployment: hands-on experience integrating and operating AI services and APIs in production, including monitoring, reliability, and security practices for AI-powered features

Developer Enablement: ability to support multiple engineering teams, troubleshoot across infrastructure and application layers, document solutions, and enable secure self-service practices

Skills

Terraform

AWS

ECS

RDS

ALB

VPC

IAM

Route53

ECR

Lambda

DynamoDB

SQS

Secrets Manager

KMS

CloudWatch

GitHub Actions

Docker

ECS Fargate

Linux

Git

Bash

Python

GitHub Actions CI/CD

Benefits

Pension

Vacation

Sabbatical

Parental leave

Employee assistance program

Employee discounts

Senior Site Reliability Engineer

About the role

Are you passionate about building resilient, scalable systems that power mission-critical applications? Do you thrive on automating operations, improving reliability, and ensuring exceptional system performance?

About the team:

Embedded Innovation Teams are cross-functional squads embedded within our segments to rapidly turn internal AI experimentation into validated, reusable solutions, building the capabilities we need to deliver customer value and growth. We work problem-first rather than tool-first, directly inside segment and function teams, improving the internal workflows that help our people deliver better outcomes for customers, faster.

About the role:

As a Senior Site Reliability Engineer (SRE), you will play a key role in ensuring the reliability, scalability, and performance of our critical platforms and services. You will lead complex reliability initiatives, drive automation efforts to reduce operational toil, and help build resilient systems that deliver exceptional customer experiences.

You will leverage your expertise in observability, incident response, and distributed systems to proactively identify and resolve reliability challenges. Working closely with engineering teams, you will design and implement solutions that improve service availability, streamline operations, and enhance system recovery capabilities.

You will hold a high bar on code quality, flag risks and blockers early, and work alongside host-function stakeholders to make sure what you build fits real workflows, not assumed ones. You will also support handover and capability-building so the solution is owned and operable after the squad moves on.

Key Responsibilities:

•

Creates monitoring queries and establishes service level baselines.

•

Supports senior engineers during incidents.

•

Makes contributions during post-mortems and RCAs.

•

Participates in disaster recovery tests.

•

Implements automation and executes code in production environments.

•

Contributes to SRE knowledge documentation.

•

Supports the deployment, monitoring, and reliability of services integrating AI tools.

Design for Reliability

•

Can support architecture and senior engineers in the creation of infrastructure topology drawings and deployment workflows.

•

Can carry out the testing of availability, reliability, and recoverability in non-production environments.

•

Able to benchmark and document test performance results to support production readiness reviews.

•

Has advanced hands-on experience of DevOps practices including monitoring, virtual networks, cloud storage, containers and orchestration, CI/CD, configuration management, and securing cloud applications.

Incident Management

•

Has the ability to create and/or present RCAs including the executive summary, timeline, detailed impact statement, follow-on actions, and residual risks.

•

Able to participate in the on-call rota and provide on-call support for other SRE engineers.

•

Can write advanced automation scripts for incident response, including failovers and rollbacks.

Observability

•

Has a deep technical understanding of observability techniques across the full stack and can bring clarity to complex incidents or performance issues.

•

Able to create templated observability dashboards and configuration using code so that others can implement quickly for their products.

•

Can influence the setting of appropriate SLOs and Error Budgets.

Platforms and Automation

•

Can work within or manage a cross-functional team in support of migrating applications to standard platforms.

•

Gives direction and consultancy to others when implementing new Paved Road features or Platforms.

•

Can analyse and make recommendations to improve the SDLC and CI/CD processes.

•

Able to create actionable reports on the operational health and lifecycle of platform and product components.

Requirements:

· Advanced Terraform: Expertise in modules, providers, state management, lifecycle controls, drift detection, safe refactoring, and remote state (S3, locking, cross-stack dependencies).

· AWS Operations: Hands-on experience managing production, multi-account, multi-region AWS environments across ECS, RDS, ALB, VPC, IAM, Route53, ECR, S3, Lambda, DynamoDB, SQS, Secrets Manager, KMS, and CloudWatch.

· GitHub Actions CI/CD: Experience building and troubleshooting reusable workflows, OIDC authentication, approval gates, runners, Terraform deployments, application deployments, and migration pipelines.

· ECS Fargate & Containers: Strong knowledge of Docker, ECR, ECS task definitions/services, IAM roles, health checks, autoscaling, ALB integration, and deployment rollbacks.

· AWS Networking & Security: Proficiency in VPCs, networking, ALBs, Route53, ACM/TLS, IAM, OIDC, Secrets Manager, KMS, and cloud security best practices.

· Incident Response & Observability: Skilled in troubleshooting using logs, metrics, alarms, deployment history, root cause analysis, rollback decisions, and operational runbooks.

· Linux & Automation: Strong Linux and Git fundamentals with Bash/Python scripting for AWS CLI automation, CI/CD, and operational tooling.

· AI Tooling Deployment: Hands-on experience integrating and operating AI services and APIs in production, including monitoring, reliability, and security practices for AI-powered features.

· Developer Enablement: Ability to support multiple engineering teams, troubleshoot across infrastructure and application layers, document solutions, and enable secure self-service practices.

Why Join Us?

Join our team and contribute to a culture of innovation, collaboration, and excellence. If you are ready to advance your career and make a significant impact, we encourage you to apply.

Work in a way that works for you

We promote a healthy work/life balance across the organization. We offer an appealing working prospect for our people. With numerous wellbeing initiatives, shared parental leave, study assistance and sabbaticals, we will help you meet your immediate responsibilities and your long-term goals.

· Working flexible hours - flexing the times when you work in the day to help you fit everything in and work when you are the most productive.

Working for you

We know that your well-being and happiness are key to a long and successful career. These are some of the benefits we are delighted to offer:

•

Comprehensive Pension Plan

•

Generous vacation entitlement and option for sabbatical leave

•

Maternity, Paternity, Adoption and Family Care leave

•

Internal communities and networks

•

Various employee discounts

•

Recruitment introduction reward

•

Employee Assistance Program (global)

About the business-

A global leader in information and analytics, we help researchers and healthcare professionals advance science and improve health outcomes for the benefit of society. Building on our publishing heritage, we combine quality information and vast data sets with analytics to support visionary science and research, health education, and interactive learning, as well as exceptional healthcare and clinical practice. At Elsevier, your work contributes to the world’s grand challenges and a more sustainable future. We harness innovative technologies to support science and healthcare to partner for a better world.

We know your well-being and happiness are key to a long and successful career. We are delighted to offer country specific benefits. Click here to access benefits specific to your location.

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