Senior / Principal Game Engineer

Rocket Science Interactive Inc.

Job Overview

Location

Cardiff, Wales, UK

Job Type

Full-time

Full Job Description

📋 Description

• We are seeking a Principal Game Engineer to join our growing co-dev team.
• In this role, you will take ownership of the systems players feel most directly: gameplay, UI, 3Cs (character, camera, and controls), and AI.
• Working across a variety of partner projects, you will design, implement, and refine the systems that drive the moment-to-moment experience, bringing expert engineering judgement to everything from input handling and camera behaviour to UI architecture and core gameplay systems.
• As a principal engineer, you will set the technical direction in your area, act as a trusted, customer-facing point of contact for our partners, and raise the bar for quality across the wider team.
• An ideal candidate is passionate about games, has deep experience building player-facing systems in Unreal Engine (or similar), combines expert C++ and C# skills with strong 3D maths, and has a track record of delivering polished, responsive player systems and experiences.
• Player Experience Development: Design, implement, and polish gameplay features, UI systems, and 3Cs (character, camera, and controls) that feel responsive, intuitive, and satisfying in players' hands.
• Technical Leadership: Own the technical direction for player experience work across projects, making sound architectural decisions, anticipating risks, and guiding solutions from prototype through to ship quality.
• Customer-Facing Collaboration: Act as a senior technical representative to our partners, gathering requirements, presenting solutions, communicating trade-offs clearly, and building the trust that underpins great co-development relationships.
• Critical Problem Solving: Apply strong analytical and debugging skills, including profiling and diagnostic tools, to investigate and resolve complex technical issues across gameplay, UI, and engine-level systems.
• Mentorship: Support and mentor engineers across the team, sharing expertise in player experience engineering and helping to grow the studio's capabilities in gameplay, UI, and 3Cs.
• Code Review: Champion high standards of code quality, performance, and maintainability through code reviews, constructive feedback, and by setting the example in your own work.

🎯 Requirements

• Expert Software Engineering: Extensive professional experience developing and shipping games, with the depth of judgement expected at a principal level and a history of delivering high-quality, player-facing systems.
• Strong C++ and C# Skills: Expert proficiency in C++ and C#, with a commitment to writing clean, maintainable, and efficient code.
• Strong 3D Maths: A firm grasp of the linear algebra and geometry that underpin cameras, character movement, animation, and gameplay systems.
• Unreal Engine Skills: Deep experience developing player-facing systems in Unreal Engine, including the Gameplay Framework, UMG/Slate, and input and camera systems. Unreal experience is preferred, though we also value strong Unity backgrounds.

🏖️ Benefits

• Competitive Salary and Benefits Package: Your health and wellbeing is important to us, so we offer a variety of benefits including:
• Hybrid Working Arrangement: Our office in Cardiff is located right in City Centre, just a couple minutes away from the Cardiff Central Train Station! As a member of our team, you’ll have the flexibility to work at home and collaborate with your fellow engineers in person.
• Private Pension via Salary Sacrifice
• Optional Private Medical, Dental, and Vision coverage
• Annual Leave, plus Bank Holidays and Winter Break Office Closure
• Annual Research Credit: We always encourage personal growth, so we provide all of our team members with an annual credit to further enhance your skills!
• Professional Development: We offer annual reviews, as well as opportunities to collaborate across disciplines, internal tech talks, and the chance to learn from specialists with backgrounds from across the games and software development industries.
• Work-Life Balance: We really believe that home life comes first and we promote a flexible working environment. And as an added bonus: We don’t crunch!
• Family Friendly: We understand the importance of family, which is why we offer 6 weeks full of Maternity, Paternity, and Adoption Leave to support you during this exciting time!
• Office Perks: In addition to everything above, we also provide:
• Weekly Team Lunches
• Snacks, Including the Good (Yorkshire) Tea
• Fully Equipped Team Lounge, Including our Favourite Consoles and Games
• And, most importantly, a supportive and creative working environment made up of talented and friendly people, as well as the opportunity to work on some pretty cool games and projects – if we do say so ourselves!

Skills & Technologies

Senior

Remote

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Rocket Science Interactive Inc.

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About Rocket Science Interactive Inc.

Rocket Science Interactive is a Canadian game development studio focused on creating and operating live-service multiplayer games. The company builds proprietary technology and tools to support scalable online experiences, primarily targeting PC and console platforms. Its current flagship title is "FANGS," a team-based competitive brawler. The studio emphasizes sustainable game design, community-driven development, and long-term content support. Founded in 2020 by industry veterans, Rocket Science operates remotely with a distributed team across North America and Europe.

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