Build Engineer - Old School RuneScape

Location: Cambridge, UK – This position offers flexible working options, including predominantly remote work. Applicants should be based (or willing to relocate) within a comfortable commuting distance of our office to attend onsite as required.

Looking for a build engineering role where your work directly shapes how a live MMO reaches players every week?

As a Build Engineer on Old School RuneScape, you’ll play a central role in keeping one of the world’s most successful live MMOs moving at pace. Working within a cross-disciplinary game team, you’ll help power the systems, pipelines and deployment workflows that allow OSRS to deliver frequent, high-quality updates to a global player base.

This is an exciting opportunity because your work won’t sit in the background unnoticed - it will directly support the weekly release cadence of a hugely loved live game. At Jagex, this role offers the chance to take real ownership of build and deployment technology in a unique MMO environment, shaping how teams develop, test and ship at scale.

What you’ll be doing:

• Maintain and improve build and deployment systems that keep Old School RuneScape releases reliable, consistent and fast
• Support the evolution of CI/CD pipelines and workflows, helping modernise how the game is built, tested and delivered
• Help power OSRS’s weekly release cadence, enabling the team to ship updates smoothly and with confidence
• Create automation and scripting in Python, Bash and other languages to remove friction from development and testing
• Improve monitoring, debugging and visibility across pipelines so issues can be identified earlier and resolved faster
• Lead and evolve the client and server deployment integration that underpins how Old School RuneScape is delivered
• Research and introduce modern tooling and approaches that strengthen pipeline resilience and simplify release processes
• Take ownership of this technology area, sharing knowledge with the wider team and helping raise build and deployment standards

What we’re looking for: 

• Demonstrable proficiency in scripting with Python and/or Bash
• Proven experience working with build tooling and CI/CD systems, including Bamboo or similar platforms
• Strong experience with version control tools such as Git and Perforce
• Track record of improving build, deployment or automation workflows in a live development environment
• Demonstrable understanding of modern development practices, with experience evaluating custom-built versus off-the-shelf solutions
• Strong experience solving technical problems within complex or specialised technology stacks
• Professional experience working in games development, with on experience on a large-scale MMO game being a strong bonus
• Being comfortable with other languages such as Java, C++ or Perl is a bonus

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 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.

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.