Senior Unity Software Engineer

Join SEGA Europe’s Sports Interactive team as a Senior Unity Software Engineer. The role reports to the Lead Producer, works on a fully remote or hybrid basis, and focuses on architecture and scalable systems in C# and Unity for Football Manager.

Position Overview

We seek an experienced Senior Software Engineer with deep expertise in C# and Unity. You will design, implement, and maintain reusable systems across multiple game areas including addressables, package management, data binding, UI, and editor tooling. You will collaborate closely with design, production, QA, and other stakeholders to deliver high‑quality user experiences on desktop, console, and mobile platforms. You will mentor junior engineers, promote best practices, and shape technical foundation and player‑facing experience.

Key Responsibilities

• Design, implement, and maintain complex and scalable systems and features using C# and Unity that form the technical foundation for our games.
• Contribute to the development, profiling and optimisation of our code, including using Unity’s UI Toolkit and dynamic data binding.
• Support the development of editor tooling and workflows that enhance productivity and streamline content integration across multiple disciplines including engineers, art & design.
• Own and maintain areas of our C# codebase, ensuring performance, maintainability, and cross‑platform compatibility across desktop, console, and mobile platforms.
• Collaborate with cross‑functional teams – including design, engineering, QA, and production – to deliver high‑quality user experiences and features.
• Participate in planning and roadmap discussions, contributing technical insight and helping shape feature delivery and long‑term architecture.
• Investigate and resolve complex technical challenges, including performance bottlenecks.
• Mentor junior engineers, promote best practices, and foster a culture of continuous learning and technical excellence.

Knowledge, Skills & Experience

• Extensive professional experience in video game development using C#.
• Deep proficiency in C# is essential, including a strong understanding of memory management, garbage collection, async programming, and performance.
• A strong experience and understanding of Unity.
• Experience with Unity’s UI Toolkit is beneficial but not essential.
• Experience developing Unity editor tooling and systems that support multi‑disciplinary teams.
• Solid understanding of software engineering principles, design patterns, and profiling and performance optimisation.
• Proven ability to write clean, maintainable, portable, performant and well‑documented code.
• Familiarity with C++ is beneficial, particularly in contexts where Unity interfaces with native modules, but not essential.
• Experience with cross‑platform development across desktop, console, and mobile environments.
• Strong analytical and problem‑solving skills, with a proactive approach to technical challenges.
• Excellent communication skills and ability to collaborate effectively across disciplines.
• Self‑motivated with a commitment to continuous improvement and team support.
• Experience mentoring junior engineers and contributing to team‑wide technical growth.
• Knowledge of Football Manager is beneficial; interest in football is a plus.

Benefits of Working at Sports Interactive

A flexible working policy to best suit you and your team. Subsidised mental health, therapy and coaching sessions are available. Contributory Pension Scheme (up to 7 % of annual salary). Free onsite evening bar in the Sports Interactive London HQ. A well‑stocked breakfast bar with cereals, fruits, teas, and coffees. Regular events in collaboration with our partnered football clubs. Access to our on‑site physical and massage therapist services. Multiple clubs and societies to join e.g., book club and art workshops. Free access to games released under the SEGA Europe umbrella. A range of Gym Membership options through our Benefits partners. Fully subsidised Healthcare and Dental Plans. Free Travel Insurance for yourself and your family. A personalised football shirt upon passing probation.

Company Culture & Values

We approach everything with passion, whether that is making our mark on the gaming and football industries or doing our bit for the world around us. We want to share that outlook with everyone who shows up to work here each day. For us, talent wins games, but teamwork wins titles. Collaboration is the key to constantly topping our best. We believe everyone matters, no matter which part of the business you are in, so we encourage and support our people in driving your own growth and realising your full potential. But, more than anything else, we are a team. A team with a down‑to‑earth dynamic, that has a lot of fun doing what we do. And whether that’s technical tweaks or fine‑tuning our creative process, everything is geared at producing the best game possible for our players. To do that, we need to be tenacious and move quickly, and not be afraid of switching things up. It is these principles that have enabled us to produce a game that has defined year after year, and that will continue to push us for many more to come. Our flexible working culture gives you the opportunity to optimise your workload, with in‑office, hybrid, and remote working options dependent on role. So, if you want a work/life balance, we are behind you. Because while we live to create extraordinary games, we know that is not all you have got going on. You can trust that we always keep things in perspective, fostering an environment where work can be more than just a job.

Equal Opportunities

We are proud to be an equal opportunities employer and encourage applications from any relevant candidate irrespective of sex, race, disability, age, sexual orientation, gender reassignment, marriage or civil partnership, pregnancy or maternity, religion, or belief. SI is proudly a Disability Confident Committed employer, and we are dedicated to ensuring our recruitment process is inclusive and accessible. Our studio has disabled access and facilities but please ensure you advise us if you require any other reasonable adjustments to be made to support you during the recruitment process.