Site Reliability Engineer (SRE)
Build and maintain reliable, scalable systems at scale
Job titles
Site Reliability Engineer, DevOps Engineer +
UK salary range
£65,000–£100,000
US salary range
$110,000–$160,000
Time to first role
2–4 years
About this role
Site Reliability Engineering (SRE) is a discipline that applies software engineering principles to operations and infrastructure. SREs are responsible for ensuring that production systems are reliable, scalable, and performant. They build automation to reduce toil, design monitoring and alerting systems, manage incident response, and implement chaos engineering practices. The role is in high demand as organizations increasingly rely on digital services and need experts who can balance feature velocity with system reliability. SREs work closely with development teams to define service level objectives (SLOs) and error budgets, and they often participate in on-call rotations. The career path typically requires strong coding skills, deep knowledge of Linux, container orchestration, cloud platforms, and infrastructure-as-code tools.
Key skills employers look for
Certification roadmap
Foundation
Build core IT and Linux fundamentals
XK0-005CompTIA Linux+
Linux is the backbone of most production systems; this cert validates essential command-line and system administration skills needed for SRE work.
101-500 & 102-500LPIC-1 Linux Administrator
An alternative to Linux+ that covers similar foundational Linux skills; useful if you prefer the LPI track.
Core SRE Skills
Master containers, orchestration, and automation
CKACertified Kubernetes Administrator
Kubernetes is the standard container orchestrator; this cert proves you can deploy, manage, and troubleshoot clusters — a core SRE responsibility.
Terraform Associate (003)HashiCorp Certified: Terraform Associate
Infrastructure as Code is essential for SREs to manage environments reliably; Terraform is the leading IaC tool for provisioning cloud resources.
DOP-C02AWS Certified DevOps Engineer – Professional
Validates advanced skills in CI/CD, monitoring, and automation on AWS — directly applicable to SRE workflows in cloud-native environments.
CKADCertified Kubernetes Application Developer
Focuses on designing and deploying applications on Kubernetes; useful for SREs who need to understand developer workflows and debug applications.
Advanced Reliability & Security
Deepen expertise in security, observability, and advanced operations
CKSCertified Kubernetes Security Specialist
Security is critical for SREs managing production systems; this cert covers cluster hardening, runtime security, and compliance — key for reliable operations.
Vault Associate (002)HashiCorp Certified: Vault Associate
Secrets management is a core SRE concern; Vault is the industry standard for managing tokens, passwords, and certificates in distributed systems.
SAP-C02AWS Certified Solutions Architect – Professional
Provides deep architectural knowledge for designing resilient, scalable systems on AWS — directly applicable to SRE reliability goals.
Frequently asked questions
What is the typical salary for an SRE in the UK and US?
In the UK, SREs typically earn between £65,000 and £100,000 depending on experience and location. In the US, the range is $110,000 to $160,000, with senior roles often exceeding $200,000.
Do I need a computer science degree to become an SRE?
While many SREs have CS degrees, it is not strictly required. Strong coding skills, Linux experience, and relevant certifications (like CKA and Terraform) can substitute for formal education. Practical experience with production systems is highly valued.
How long does it take to transition into an SRE role from traditional IT?
The time to entry is typically 2–4 years from starting in IT support or junior DevOps roles. You'll need to build skills in automation, Kubernetes, cloud platforms, and monitoring. Certifications can accelerate this timeline.
What is the job outlook for SREs in the next 5 years?
Demand for SREs is very high and expected to grow as more companies adopt cloud-native architectures. The role is critical for maintaining uptime and reliability, making it recession-resistant. Remote opportunities are also abundant.
Which certification should I start with for an SRE career path?
Start with Linux+ or LPIC-1 to build foundational Linux skills, then move to the CKA (Kubernetes) and Terraform Associate. These three certs provide the core technical stack for most SRE roles.
Key terms for this career path
These concepts underpin the certifications in this roadmap and appear regularly in exam questions.
Bash script
A Bash script is a text file containing a sequence of commands for the Unix shell Bash, allowing users to automate repetitive tasks and streamline system administration on Linux and macOS.
Persistent Disk
Persistent Disk is a durable, high-performance block storage service for Google Cloud virtual machines that retains data even after the VM is shut down or deleted.
ext4
ext4 is the default file system for many Linux distributions, designed to store and manage files on a hard drive or SSD with journaling, large volume support, and backward compatibility.
SharePoint admin center
The SharePoint admin center is the web-based control panel where IT administrators manage SharePoint Online settings, site collections, user permissions, and storage across an organization's Microsoft 365 environment.
Assigned license
An assigned license is a software or service license that has been specifically allocated to a particular user or device, granting that entity the right to use the licensed product.
Repository
A repository is a central storage location where software packages, code, or configuration files are kept, managed, and distributed for use by IT systems.