Unity Developer C# Mobile Games

We are looking for a technically strong Unity Developer who enjoys building games that feel great to play and can move fast without breaking quality. This role blends rapid prototyping and iteration with solid engineering fundamentals. Depending on the product, you may work on hybrid casual mobile prototypes driven by engagement and advertising metrics, narrative adventure titles with puzzles and branching dialogue, or high polish rhythm and 3D experiences.

You will work closely with designers, artists, and producers, owning game features end to end in Unity and helping keep the project playable, stable, and shippable.

What you will be doing You will prototype new gameplay ideas quickly, validate mechanics, and iterate based on player behaviour and data. You will implement core features and systems in Unity using C#, improve performance, fix bugs, and keep the codebase maintainable. You will help establish asset and development pipelines so the team can build content smoothly and consistently. You will integrate and work with analytics and advertising SDKs when required, and use metrics such as retention, CPI, and engagement to guide improvements. You will support production readiness by debugging crashes, analysing issues from live or test builds, and improving stability on iOS and Android. You will collaborate with a mixed team including junior designers and freelancers, helping with implementation and mini game logic where needed.

Key responsibilities

• Rapid prototyping of mobile game concepts and gameplay loops
• Feature implementation in Unity with clean, high performance C#
• Iterating from user engagement and monetisation data where applicable
• Integrating advertising SDKs and analytics tools for measurement
• Establishing content pipelines, maintaining the project structure, and improving workflow
• Debugging, profiling, and production crash analysis
• Platform support for mobile builds including iOS and Android SDK considerations
• Working closely with designers, artists, and producers to keep scope realistic and delivery moving, Unity, Unity Developer, Game Developer, C#, mobile games, iOS, Android, rapid prototyping, hybrid casual, casual games, gameplay systems, analytics, retention, CPI, monetisation, ads SDK, Unity Ads, A B testing, segmentation, performance optimisation, profiling, debugging, crash analysis, 3D development, shaders, VFX, pipelines, CI, shipped titles, narrative games, puzzles, rhythm games

Strong professional Unity experience and solid C# skills. You can implement systems confidently, diagnose problems quickly, and communicate clearly within a team. You understand the importance of polish, stability, and performance, and you can keep momentum in a fast moving environment.

Nice to have Experience in hybrid casual or casual mobile games and shipping titles to market. Familiarity with A B testing and user segmentation. Knowledge of UI UX principles for mobile. 3D experience for camera, movement, and feel. GPU shaders and VFX knowledge. CI pipeline awareness. Experience with advertising networks such as Unity Ads or similar. Interest in narrative driven games, puzzles, and dialogue systems. Willingness to support occasional overtime during milestone periods.

What you get A creative environment with a strong focus on shipping, iteration, and quality. Benefits vary by studio but commonly include flexible working patterns, annual bonus eligibility, generous holiday allowance in London, social insurance where applicable, and office perks such as snacks and drinks.