Junior Cloud Reliability Engineer

Jagex; Cambridge; On-site; GBP 28,000 - 42,000; Full time

Benefits offered by this job

Private Healthcare

Discretionary annual bonus

Minimum 6% Pension contributions

Life Insurance

Flexible working hours

25 days annual leave

Job summary

Jagex, based in Cambridge, UK, is hiring a Junior Cloud Reliability Engineer for its Developer Platform team. The role offers flexible working options and requires commuting distance to attend onsite as needed.

You will learn backend infrastructure for RuneScape services, support live systems, and grow through independent ownership of infrastructure projects as skills develop.

Qualifications

• Comfortable working in a Linux terminal environment and writing bash scripts.
• Familiarity with at least one programming language such as Python - we’re open to any language if you can demonstrate how you think through problems.
• A solid understanding of networking concepts and the OSI model.
• A genuine problem‑solving mindset - you enjoy working through complex issues, aren’t satisfied with surface‑level answers, and naturally ask how and why things work the way they do.
• Good communication skills and a desire to keep learning, including the confidence to ask questions and challenge existing approaches.
• Prior infrastructure or SRE experience is a plus.

Responsibilities

• Learn our backend infrastructure which will cover game world systems, networking, build pipelines, version control, data center hardware, and cloud infrastructure.
• Handle day‑to‑day support requests and troubleshoot issues across our live systems, escalating quickly when needed and following up to understand the root cause.
• Support development teams in managing cloud‑native workloads and consuming our cloud platform through Infrastructure-as-Code.
• Contribute to the management of our Linux virtual machine fleet, including monitoring, configuration management, and workload optimisation.
• Participate in incident response and post‑mortems, developing your understanding of how complex systems fail and how to make them more resilient.

Skills

Linux terminal

Bash scripting

Python

Networking concepts

Problem solving

Communication skills

SRE experience

Job description

Office location: Cambridge, UK – This position can accommodate flexible working options. Candidates must be based (or be willing to relocate) within a comfortable commuting distance of our Cambridge office to attend onsite as required.

Are you looking to start a career in cloud and reliability engineering, working on the infrastructure behind some of the world's biggest and longest-running online games?

As a Junior Cloud Reliability Engineer in our Developer Platform team, you’ll help support the backend infrastructure powering RuneScape, Old School RuneScape, and RuneScape: Dragonwilds. Working within a small team, you’ll gain hands‑on experience across cloud infrastructure, networking, Linux systems, and game services while learning how to keep hundreds of thousands of players online every day.

This role offers a lot of development opportunities. You’ll begin by supporting existing systems and responding to day‑to‑day operational requests before progressing to independent ownership of infrastructure projects as your technical skills and experience grow.

What you’ll be doing:

• Learn our backend infrastructure which will cover game world systems, networking, build pipelines, version control, data center hardware, and cloud infrastructure.


• Handle day‑to‑day support requests and troubleshoot issues across our live systems, escalating quickly when needed and following up to understand the root cause.


• Support development teams in managing cloud‑native workloads and consuming our cloud platform through Infrastructure-as-Code.


• Contribute to the management of our Linux virtual machine fleet, including monitoring, configuration management, and workload optimisation.


• Participate in incident response and post‑mortems, developing your understanding of how complex systems fail and how to make them more resilient.

What we’re looking for:

• Comfortable working in a Linux terminal environment and writing bash scripts.


• Familiarity with at least one programming language such as Python - we’re open to any language if you can demonstrate how you think through problems.


• A solid understanding of networking concepts and the OSI model.


• A genuine problem‑solving mindset - you enjoy working through complex issues, aren’t satisfied with surface‑level answers, and naturally ask how and why things work the way they do.


• Good communication skills and a desire to keep learning, including the confidence to ask questions and challenge existing approaches.


• Prior infrastructure or SRE experience is a plus.

What we offer:

When you join Jagex you can look forward to a generous Perks & Benefits package including:

• Private Healthcare, including Dental Plan.


• Discretionary annual performance bonus.


• Minimum 6% Pension contributions.


• Life Insurance.


• Enhanced family leave policies from day 1.


• Flexible working hours.


• 25 days annual leave + Bank holidays & the option to buy/sell holidays + so much more!

Right to Work Statement

This role is only open to applicants who have the permanent right to work in the UK. We are unable to provide or take over visa sponsorship for this position, either now or in the future. Applicants must therefore be able to demonstrate their ongoing eligibility to work in the UK without the need for employer sponsorship.

About Jagex

We are Jagex: The RuneScape Company. Home to one of gaming’s most enduring success stories. We create deep, community‑powered games with worlds that evolve, inspire, and endure. Our flagship MMORPG franchise, RuneScape, has welcomed over 300 million player accounts, inspiring generations of players across PC and mobile for 25 years.

As we begin our 26th year, we are accelerating our strategy to expand RuneScape into a broader ecosystem of forever games and connected experiences, grounded in a renewed commitment to integrity and fair play. This includes the reduction of monetisation mechanics, as well as the launch of RuneScape: DragonWilds into Steam Early Access in 2025, representing a major step in building a multi‑genre future for the RuneScape universe. We remain focused on building enduring worlds, empowering player‑led innovation, and laying the foundations for the boldest era in RuneScape’s history. For more information, visit https://www.jagex.com/ .

Headquartered in Cambridge, United Kingdom, we are home to passionate creators, storytellers, engineers, and even a few dreamers, all united by a single mission to shape the future of online worlds and empower players to make them their own. We’re looking for people to join us who share our ambitions and values. We foster an inclusive workplace built on trust, autonomy, and a shared passion for creating experiences that inspire our communities.
Our values guide everything we do: We Embrace Fellowship by collaborating and sharing openly. We Hone our Craft by always learning and improving; We Honour our Vows by being honest and transparent; We are our Customers’ Heroes by striving to understand our team & player needs, and We Seize The Day by making the most of every opportunity.

Join us. The next era of RuneScape and the next chapter of Jagex: The RuneScape Company starts now.

Inclusion & Accessibility Statement

We are committed to providing equal opportunities and creating an environment where everyone can thrive. We welcome applications from all backgrounds, and we recruit, develop, and promote based on merit and ability.

If you require any reasonable adjustments to support you during the recruitment process, please let us know when you’re invited to interview.visa sponsorship for this role. Applicants must have the right to work in the UK.