Advanced Unity Engineer

JOB DESCRIPTION

Job Title:

Principal Unity Software Engineer

Team:
Systems

Reporting into:
Lead Producer

Working Model:
Hybrid | Remote by exception

We are Sports Interactive 🎮

The gaming studio behind: ⚽ Football Manager.

Founded in 1994, Sports Interactive became a wholly owned subsidiary of SEGA Europe in 2006. Based at the Here East technology hub in Stratford, East London, the SI team continues to expand as we bring our titles to an ever-growing audience across an increasing variety of platforms.

To support our growth, we welcome the opportunity to connect with passionate people with the drive to match our ambitions and initiative to realise your individual potential.

We are seeking a highly skilled and experienced Principal Software Engineer to join our development team. You are an expert in C# and Unity, with an exceptional ability to architect and implement efficient, scalable, reusable, and maintainable systems across multiple areas of the game. These include, but are not limited to: addressables, package management, data binding, UI and UI systems, and general system and editor tooling that support our games and their features and functionality.

You will set and evolve engineering standards and own key architectural decisions; and you will work closely with engineering leads and other engineering teams, as well as with design, production, QA and other stakeholders across the studio deliver high-quality player experiences on desktop, console and mobile.

You combine deep Unity and C# expertise with strong systems thinking, enabling you to break down complex problems, define pragmatic solutions, and mentor engineers to raise the bar across the studio.

Your contributions will directly shape and steer the technical foundations and player-facing experience of Football Manager, helping deliver intuitive, performant, and engaging games to our global player base.

• Define, communicate and evolve the Unity and C# architectural vision and standards for the studio; ensure alignment across multiple teams and products.
• Own and drive cross-team technical initiatives that improve performance, maintainability, stability, iteration speed and flexibility across Unity projects and platforms.
• Work hands‑on in C# and Unity to design and implement complex and scalable systems and tools that underpin our games and development workflows.
• Lead investigations into complex technical issues and guide teams in profiling, performance, memory usage, garbage collection, async programming, etc.
• Champion a performance and stability culture: establish measurements and workflows to identify and eliminate bottlenecks.
• Set the benchmark for code quality, testing strategies and documentation; embed practices that reduce defects and repeat work.
• Work closely with engineering leads and stakeholders across disciplines to shape technical roadmaps, unblock delivery and mitigate risk early.
• Influence planning and long‑term architecture decisions; contribute strategic technical insight to roadmap discussions.
• Coach and mentor engineers at all levels; provide code and design reviews, pair coding and technical guidance (without line‑management responsibilities).
• Contribute to recruitment, onboarding and processes to grow Unity expertise across the studio.
• Drive the development of editor tooling and automation that enhances productivity and streamlines content integration across engineering, art and design.

• Extensive professional experience delivering complex but clean, portable and maintainable systems in Unity and C# at scale in video games, with multiple shipped titles across desktop, console and/or mobile.
• Track record of owning architecture, systems and tooling in Unity and C#.
• Deep proficiency with Unity profiling, optimisation and crash analysis, with a strong understanding of performance, memory management, garbage collection and async programming.
• Strong software engineering fundamentals: design patterns, testing strategies, code review and documentation.
• Ability to influence and align cross‑functional stakeholders; excellent written and spoken communication skills.
• Ex…