Site Reliability Engineer

Addition Solutions LTD; Cheltenham; On-site; GBP 92,000 - 120,000; Part time

Job summary

Addition Solutions in Cheltenham is seeking an experienced hybrid contractor to improve reliability and performance of complex government-scale systems. You will partner with software teams to automate tasks, enhance monitoring, and support development environments to meet targets.

Candidates should have hands-on config mgmt (Ansible/Terraform), container tech (Docker/Kubernetes/OpenShift), CI/CD tools (Jenkins) and cloud experience (AWS, Azure). Strong Linux and scripting skills are required.

Qualifications

• Hands-on with configuration management and Terraform.
• Containerization and orchestration with Docker, Kubernetes, OpenShift.
• CI/CD tooling and monitoring with Prometheus and Grafana.
• Knowledge of RabbitMQ and relational databases/SQL.
• Strong Linux administration and shell scripting.
• Cloud experience with AWS (EC2, RDS, S3, Lambda) and Azure.

Responsibilities

• Collaborate with software teams to boost system reliability and performance.
• Automate repetitive tasks and streamline alerting with 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.

Skills

Ansible

Terraform

Docker

Kubernetes

OpenShift

CI/CD

Prometheus

Grafana

InfluxDB

RabbitMQ

SQL

Java

Python

Linux

AWS

Azure

Tools

Jenkins

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.

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