Senior Site Reliability Engineer

Full / part time: Full time

Business area: Technology

Location: Remote or Hybrid (Uxbridge)

A bit about giffgaff

Do you want to join a telecoms company that’s up to good? At giffgaff we do mobile differently. We call out the bad and find a better way. We’re laser-focused on flexibility, value and mutual good.

And we’re so proud to be a certified B Corp. This means we've joined a network of more than 1,000 UK companies, who want to make a positive impact on people and the planet. Working at giffgaff is something you could be proud of too.

You’ll get the best of both worlds, the energy and fast pace of giffgaff, plus all the benefits that come with being part of our parent company, Virgin Media O2.

Our business model is unique. We work with our members (our customers) to understand their needs in all areas of the business. We love this highly collaborative approach. Over the past few years our member base has grown steadily, and we’re still going. We’re always looking to acquire new members, and to do that we need the best people in our team.

Our bright and modern gaff is in Uxbridge, in leafy West London. But if commuting isn’t your favourite, most of our roles can be hybrid or work from home, or anywhere in between. If you like coming in, you’ll always find some office buddies. And if you like big occasions, we really bring the office to life monthly for our themed culture days. Plus all our giffgaffers come together at our legendary giffgaff summer, birthday and Christmas celebrations.

The Team

Software engineering is at the heart of what we do here at giffgaff. Our agile engineering teams build and support a wide variety of applications and services. These combine to create our unique user experience on the giffgaff website, enable a whole range of awesome features via modern APIs and, additionally, enable our internal teams to work in the most productive and efficient ways..

The quality and maintainability of our software is very important for us, we are looking for engineers with real world experience of building and running contemporary software, especially in terms of the whole development lifecycle. You will help us to design and implement tightly focussed APIs, user interfaces, services that internalise our core business logic or internal tools and, together with your team, you will support them in production. We want you to share your opinions on how we are doing things - and help us get better!

The Role

We are looking for SRE engineers with passion and energy, a strong desire to learn and improve and a commitment to testing and excellence.

You’ll have to make tough decisions, implement best practice and provide compromises when situations are not ideal. Oh and you’ll need to explain that to people. Not just the technical ones. Because we work in product teams where not everyone is a techie. It’s fun, you get closer to the business and know more about why we do what we do, not just how.

We’re looking for passionate engineers who are comfortable with using a variety of frameworks, languages & tools and are happy to pick up new skills when the need arises.

Key responsibilities

• Implementation of monitoring solutions / Metric-driven alerting, logging and tracing (Prometheus, EFK, Alertmanager, Jaeger/Zipkin)
• Troubleshooting in complex environments using the monitoring tools
• Establishing and measuring SLIs and SLOs with engineering teams
• Participate in periodic 24x7 on-call duties
• Build and manage systems, infrastructure and applications through automation (Terraform, Ansible)
• CI/CD tools: Jenkins/github actions, Nexus, Artifactory
• Deploy, support and monitor new and existing services, platforms, and application stacks
• Capacity and performance management of environments

What we need from you

Hands on experience with:

• Cloud services platforms: Most common services in AWS
• Container Orchestration platforms: Kubernetes/EKS, Openshift
• Helm, Kubernetes Operators or similar package managers for Kubernetes
• Linux/Unix
• Coding in one or more of the following programming languages to manage systems: Go, Python, NodeJS.
• Source code management: Git
• Implementing monitoring solutions / Metric-driven alerting, logging and tracing (Prometheus, EFK, Alertmanager, Jaeger/Zipkin)

Good to also have experience with:

• Coding in one or more of the following programming languages: Java, PHP, ReactJS
• Experience operating a variety of data stores ideally in the cloud. We primarily use Oracle, Postgres, and ElasticSearch
• Experience operating applications across multiple environments, cloud and in-house

Our commitment to equity, diversity and inclusion

At giffgaff we want to challenge the old way of doing things. People, and the way they work, define our culture and we encourage everyone to bring their whole selves to the gaff. That's why we believe in creating an equitable, fairer, more inclusive business that champions different ideas and perspectives. We may be sort-of-small but we're big on that caring, sharing thing & strive to create a supportive culture.

As a lean organisation, our team is built of a diverse, spirited range of people who are multi-skilled, highly motivated and flexible.

In return for your outstanding efforts, you'll be rewarded with a competitive salary and excellent benefits. We believe that hard work should be supported and recognised.

If this sounds like you, we’d love to hear from you.