Principal Engineer
Job Summary
Job Description
As a Principal Engineer at Build A Rocket Boy, you'll be responsible for writing, maintaining, and debugging complex code and systems within Unreal Engine for their groundbreaking game projects. You will collaborate with other programmers, designers, and artists, identify and fix performance issues, manage CI/CD processes, and design and extend large code systems. Responsibilities include ensuring team compliance with project requirements, reviewing code, mentoring junior engineers, and driving innovation. Strong C++ skills, experience with Git/Perforce, and a passion for problem-solving are essential. Unreal Engine experience is a plus. The role requires initiative, informed decision-making, and effective collaboration in a team environment.
Must have:
- Write, maintain, and debug complex Unreal Engine code
- Strong C++ skills and Source Control (Git/Perforce)
- Performance optimization and debugging
- Design and extend large code systems
- Mentor junior engineers
Good to have:
- Unreal Engine experience
- Python and infrastructure as code experience
Perks:
- Unlimited coaching & therapy
- Stock Options
- Pension scheme
- Socials
- 25 Annual Leave + 8 bank holidays (UK)
- Private Medical Insurance (UK)
- Healthcare Cash Plan (UK)
- Cycle2Work Scheme (UK)
- Electric Car Charging (UK)
10 skills required
Job Details
As a Principal Engineer, you will be responsible for writing and maintaining complex code and systems in Unreal Engine that power our current and future groundbreaking game projects. You will identify and fix performance issues and be comfortable designing and extending large code systems.
You should have strong C++ skills, be comfortable with Source Control, preferably Git and Perforce, and have a passion for problem solving. Unreal Engine experience is a plus. You are a generalist knowledgeable in areas such as engine core systems, animation, physics, tools and gameplay. Producing performant code as well as being well versed in optimization techniques is expected.
You will be taking initiative, making informed technical decisions, and choosing effective approaches to meet project goals, with strategic direction from technical leadership - working in a collaborative team environment open to feedback and shared problem-solving.
Key Responsibilities
Key Responsibilities
· Write, maintain and debug complex code and systems within Unreal Engine.
· Collaborate closely with other lead programmers, designers, and artists to deliver all technical systems for large game projects. Identify and fix performance issues, ensuring tools are scalable and reliable.
· Manage the CI, release process, infrastructure and live operations systems for a game, using Python and infrastructure as code systems.
· Design and extend large code systems to improve maintainability and performance.
· Ensure team compliance with the project’s vision, technical requirements, and style guide.
· Review other team members merge requests and participate in the elaboration of a common coding culture in the team.
· Mentor junior engineers and promote best practices in coding, debugging, and problem-solving.
· Drive innovation within the engineering team, encouraging creative solutions to technical challenges.
· Prioritize, plan, and manage the time of assigned tasks, balancing technical goals with business priorities to ensure effective delivery.
Benefits
Our Global Benefits & Perks
- Unlimited coaching & therapy — with Oliva, to support your mental health
- Stock Options — everyone owns a piece of our success
- Pension scheme — up to 5% employer matched contribution to finance those golden years
- Socials — office & remote events, play sessions and company-wide parties
- And even more benefits based on your location!
If you’re based in the UK
- 25 Annual Leave + 8 bank holidays - we’re flexible with most bank holidays so you can use the time to celebrate what’s important to you
- Private Medical Insurance - full cover with AXA
- Healthcare Cash Plan - Level 3 cover with Medicash
- Cycle2Work Scheme - lease a bike through us and save on tax too!
- Electric Car Charging - electric car charging at our Port office in Edinburgh, Scotland.
About Build A Rocket Boy
Build A Rocket Boy is an independent game developer, headquartered in Edinburgh Scotland, with operations in Budapest Hungary, the Netherlands, France, and California USA. Led by game developer Leslie Benzies, Build A Rocket Boy’s team includes hundreds of the industry’s brightest development talents with the shared vision to create new and innovative entertainment experiences. Build A Rocket Boy’s first project is EVERYWHERE – a new multi-world game experience that blurs the line between reality and the digital world.
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About The Company
Build A Rocket Boy is an independent game developer, headquartered in Edinburgh Scotland, with operations in Budapest Hungary, the Netherlands, France, and California USA. Led by game developer Leslie Benzies, Build A Rocket Boy’s team includes hundreds of the industry’s brightest development talents with the shared vision to create new and innovative entertainment experiences. Build A Rocket Boy’s first project is EVERYWHERE – a new multi-world game experience that blurs the line between reality and the digital world.
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