Site Reliability Engineer

Addition Solutions LTD; Cheltenham; Hybrid; GBP 92,000 - 120,000; Full time

Job summary

Addition Solutions LTD in Cheltenham is seeking a highly skilled DevOps/Platform Engineer to strengthen reliability and performance of complex government services. You will work in a hybrid model, 3–4 days on-site, and contribute to cloud and on-prem delivery pipelines.

The role covers automation, monitoring, incident prevention, and collaboration with software teams across multiple domains with a focus on AWS and Azure environments. Strong Linux and scripting skills are essential.

Qualifications

• Experience with configuration management tools such as Ansible or Chef.
• Hands-on Terraform for infrastructure as code and automation.
• Solid containerization with Docker and orchestration via Kubernetes/OpenShift.
• Experience with CI/CD (Jenkins) and monitoring stacks (Prometheus/Grafana).
• Knowledge of messaging (RabbitMQ) and SQL databases; strong Linux skills.
• Cloud exposure across AWS (EC2/RDS/S3/Lambda) and Azure; coding in Java/Go/Python is a plus.

Responsibilities

• Collaborate with software teams to boost system reliability and performance.
• Automate repetitive tasks and streamline alerting alongside system administrators.
• Enhance monitoring and observability to prevent issues before they affect services.
• Support development environments to meet delivery and quality targets.
• Research and advise on tools, cloud and on-prem infrastructure solutions.
• Build expertise across diverse technical and business domains.
• Contribute to evolution of cloud and on-prem delivery pipelines.

Skills

Configuration management

Terraform

Docker

Kubernetes

OpenShift

CI/CD tooling

Jenkins

Monitoring platforms

Prometheus

Grafana

InfluxDB

RabbitMQ

SQL databases

Linux administration

Shell scripting

Cloud experience

AWS (EC2, RDS, S3, Lambda)

Azure

Java

Go

Python

Tools

Ansible

Chef

Terraform

Docker

Kubernetes

OpenShift

Jenkins

Prometheus

Grafana

InfluxDB

RabbitMQ

AWS

Azure

SQL / Relational DBs

Job description

Join a team that delivers high-impact, cross-domain solutions to critical government services. This role lets you shape the reliability and performance of complex systems, ensuring they run smoothly at scale.

Role Overview

Location: Cheltenham, Hybrid (3–4 days on-site)

Package: £500–£650 per day, Contract, Outside IR35

Industry: Government & Defence Technology

What You’ll Be Doing

Collaborate with software teams to boost system reliability and performance.

Automate repetitive tasks and streamline alerting alongside system administrators.

Enhance monitoring and observability to prevent issues before they affect services.

Support development environments to meet delivery and quality targets.

Research and advise on tools, technologies, and cloud/on-prem infrastructure solutions.

Build expertise across diverse technical and business domains.

Contribute to the evolution of cloud and on-prem delivery pipelines.

Main Skills Needed

Hands-on experience with configuration management (Ansible, Chef, or similar) and Terraform.

Proficient with containerization and orchestration (Docker, Kubernetes, OpenShift).

Skilled in CI/CD tooling (Jenkins or equivalent) and monitoring platforms (Prometheus, Grafana, InfluxDB).

Knowledge of event-driven messaging (RabbitMQ or similar) and relational databases/SQL.

Strong Linux administration, shell scripting, and network security understanding.

Cloud experience (AWS services like EC2, RDS, S3, Lambda) and ideally Azure.

Coding experience in Java, Go, Python, or similar is a plus.

Familiarity with cross-domain technologies and service management practices desirable.

What's in It for You

Hybrid working with flexibility and occasional 24/7 on-call support.

Opportunity to work on technically challenging, high-profile projects.

Exposure to cutting-edge cloud and on-prem infrastructure and tools.

Collaborative and inclusive environment valuing diversity and development.

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.