At a Glance
- Tasks: Create seamless mobile experiences for iOS and Android in a dynamic gaming environment.
- Company: Join Jagex, the creators of RuneScape, known for community-driven games.
- Benefits: Enjoy private healthcare, flexible hours, generous leave, and a performance bonus.
- Other info: Be part of an inclusive culture that values collaboration and continuous improvement.
- Why this job: Shape the future of gaming while mentoring a talented team and driving innovation.
- Qualifications: Strong mobile development skills in Swift, Kotlin, and experience with CI/CD.
The predicted salary is between 60000 - 80000 £ per year.
Office 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.
Are you an experienced mobile engineer who excels at creating seamless, secure, and high-performing mobile experiences across iOS and Android platforms? As a Senior Mobile Engineer in our Player Gateway team, you’ll play a pivotal role in shaping how players first engage with Jagex titles, from their initial visit through to becoming active, returning members of our game communities. You’ll work at the intersection of mobile engineering, platform optimisation, and player experience, delivering scalable and secure solutions that power key touchpoints across the RuneScape franchise. You’ll act as a subject matter expert, leading the delivery of complex mobile solutions while mentoring and developing a talented team of engineers and driving engineering excellence across the wider organisation.
What you’ll be doing:
- Contribute across the full Software Development Lifecycle, delivering secure-by-design, production ready code supported by automated testing, peer review, and reliable deployment practices.
- Act as a subject matter expert, ensuring technical solutions meet product needs and align with Jagex engineering standards.
- Take ownership of the quality and delivery of complex engineering initiatives, ensuring outcomes meet stakeholder expectations.
- Collaborate across teams and disciplines to deliver scalable, high-impact technical solutions.
- Proactively identify opportunities to improve systems, services, and engineering processes, driving continuous improvement across the organisation.
- Support team effectiveness by helping engineers break down work into clear, value-driven increments and contributing to a strong, resilient production environment.
- Participate in an on-call rotation to troubleshoot and resolve production issues when required.
What we’re looking for:
- Strong experience with native mobile development across both iOS (Swift / Objective‑C) and Android (Kotlin / Java), with a deep understanding of platform constraints such as lifecycle, permissions and store policies.
- Proven experience delivering secure, maintainable mobile architecture that interfaces cleanly with backend microservices.
- Experience with automated testing, CI/CD pipelines, version control systems, and performance profiling tools.
- Strong debugging, optimisation and problem‑solving skills, with the ability to navigate established codebases.
- Demonstrable ability to mentor engineers and contribute to improving engineering standards and best practices.
- Experience with C++ would be an advantage.
What we offer:
- 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!
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.
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.
Principal Mobile Engineer - Core Tech in Cambridge employer: Jagex
At Jagex, we pride ourselves on being an exceptional employer, offering a vibrant work culture that champions creativity and collaboration. Our Cambridge office provides flexible working options, including predominantly remote work, ensuring a healthy work-life balance while fostering professional growth through mentorship and continuous learning opportunities. With competitive benefits such as private healthcare, generous annual leave, and a commitment to inclusivity, we empower our employees to thrive both personally and professionally in a dynamic gaming environment.
StudySmarter Expert Advice🤫
We think this is how you could land Principal Mobile Engineer - Core Tech in Cambridge
✨Tip Number 1
Network like a pro! Reach out to your connections in the industry, attend meetups, and engage with online communities. You never know who might have the inside scoop on job openings or can refer you directly.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your best mobile projects. Whether it's apps you've developed or contributions to open-source projects, having tangible evidence of your expertise can set you apart from the crowd.
✨Tip Number 3
Prepare for interviews by practising common technical questions and coding challenges. Use platforms like LeetCode or HackerRank to sharpen your problem-solving skills. Remember, confidence is key!
✨Tip Number 4
Apply through our website! It’s the best way to ensure your application gets noticed. Plus, it shows you're genuinely interested in joining our team at Jagex. Don’t miss out on the chance to be part of something amazing!
We think you need these skills to ace Principal Mobile Engineer - Core Tech in Cambridge
Some tips for your application 🫡
Tailor Your CV:Make sure your CV is tailored to the Principal Mobile Engineer role. Highlight your experience with iOS and Android development, and don’t forget to mention any relevant projects that showcase your skills in creating seamless mobile experiences.
Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Use it to explain why you’re passionate about mobile engineering and how your background aligns with our mission at Jagex. Be sure to mention specific examples of your work that demonstrate your expertise.
Showcase Your Problem-Solving Skills:In your application, highlight instances where you've tackled complex engineering challenges. We love seeing how you approach problem-solving, so share your thought process and the impact of your solutions on previous projects.
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it shows you’re keen on joining our team at Jagex!
How to prepare for a job interview at Jagex
✨Know Your Tech Inside Out
Make sure you brush up on your knowledge of native mobile development for both iOS and Android. Be ready to discuss platform constraints, lifecycle management, and how you’ve tackled security in your past projects. This will show that you’re not just familiar with the tech but can also apply it effectively.
✨Showcase Your Problem-Solving Skills
Prepare to share specific examples of how you've debugged complex issues or optimised performance in previous roles. Jagex values strong problem-solving abilities, so having a few stories up your sleeve will demonstrate your capability to handle challenges head-on.
✨Emphasise Team Collaboration
Since the role involves working across teams, be ready to talk about your experience collaborating with others. Highlight instances where you’ve mentored junior engineers or contributed to team effectiveness, as this aligns with Jagex’s focus on fostering a supportive work environment.
✨Align with Company Values
Familiarise yourself with Jagex’s core values and think about how your personal values align with theirs. During the interview, weave these values into your responses to show that you’re not just a technical fit but also a cultural one. This could be the key to standing out!
