Site Reliability Engineer

Our Benefits

City location

Private healthcare

27 days holiday

Buy or sell holidays

Bonus scheme

Pension scheme

Regular social events

£350 Christmas vouchers

Loyalty awards

Birthday off work

What to expect

About the role 

We are looking for a Site Reliability Engineer who will be a key member of our Operations team. You will be passionate about our products and platforms running at peak performance. You will understand how our software runs on top of the infrastructure (both physical and Cloud) and how the individual components interact to provide the brilliant messaging solutions our customers expect. 

You will take pride in the performance and availability of the solutions you look after and work hard to ensure the manual overhead of running a 24×7 internet solution is reduced to the minimum amount possible.

You will work collaboratively with Engineering teams to ensure issues with existing software are understood and responded to appropriately and that new solutions are built with reliability at their heart.

About Commify

We make business communication brilliant! We work with more than 45,000 companies, helping them to transform their mobile communication with their customers and employees. Our success is the result of hundreds of talented people pulling together to achieve a common goal. Join our team and be part of our success story. 

You will thrive in an environment of passion, integrity, ownership and innovation, where development and progression is a real focus. We’d like to think we have everything you’d expect from a benefits package, from 27 days holiday and your birthday off work, to private medical cover, dental cover and bi-monthly social events! On top of this you can expect £350 of Christmas vouchers and added extras like beer o’clock and an amazing Christmas party. 

What you’ll be doing

As Site Reliability Engineer you will be responsible for:

  • Ensuring high levels of system performance through monitoring, analysis and performance tuning
  • Troubleshooting system hardware, software, networks, operating and system management systems
  • Working with the Security team to identify and protect against threats to the Cloud solutions
  • Liaising with Developers, Product Owners and other Engineering teams to deliver engineering roadmaps showing key items such as upgrades, technical refreshes and new versions
  • Contributing to reviews and audits of projects from an engineering perspective, including identifying risks and mitigation options
  • Providing on-call support including out-of-hours incident support on a rota basis to help deliver a high quality of service around the clock
  • Building automation scripts, tools and runbooks to reduce the need for manual responses to alerts
  • Building knowledge and skills within Engineering teams to ensure successful running of their software in a high throughput production environment

What we’re looking for

We’re interested in hearing from candidates with experience in the following areas:

  • Passion for reliability
  • Previous experience of working in an Operations role (ideally a Site Reliability role)
  • Ability to work collaboratively across multiple teams, to take ownership of, prioritise and be accountable for your work
  • Excellent communication skills and a desire to continue to learn
  • Centralised monitoring solutions (New Relic, Application Insights, Log Analytics, ELK or similar)
  • Configuration Management tools (Ansible, Chef or similar)
  • Scripting/programming languages to assist in automating solutions e.g. PowerShell (preferred), Bash, C#, Ruby, Python.
  • Experience supporting web-based applications – with understanding of firewall configuration, load balancing and availability checks
  • Experience of working with Linux and Microsoft Server Operating Systems

It would be great if you also had:

  • Experience of defining service level objectives/operational requirements for a Cloud-based solution
  • Understanding and working knowledge of Microsoft Azure Cloud offerings, especially in the Platform as a Service category (Web Apps, Storage, Functions)
  • A good understanding or working knowledge of the following tools: Terraform, Ansible, VSTS, ARM, Puppet, Chef, Jenkins, ELK, Grafana
  • A good understanding or working knowledge of DNS, Load Balancer configuration, Active Directory and Cloud-based network infrastructure
  • Experience of working in an agile environment and experience with agile methodologies such as TDD, Scrum, Kanban
  • Understanding and experience of implementing a monitoring and alerting system for a micro-service architecture
  • Applied understanding of cloud security best practice

The next step

To apply please send a full CV and covering letter to

Commify is committed to protecting the privacy and security of your information. Personal information submitted as part of the recruitment and selection process will only be used for these purposes. We will retain information for up to 12 months, after which it will be deleted or destroyed. For full information about your rights in relation to your data, please see our full Recruitment Privacy Policy here.


We’re committed to building a team with a variety of backgrounds, views and skills, embracing our key values. The more diverse and inclusive we are, the stronger we are as a team. We encourage applications from all candidates with the relevant skills and experience.