Online Engineer

Role and Purpose:

We are seeking an experienced Online Engineer to join our team. As an Online Engineer, you will be responsible for designing, implementing, and maintaining the online systems that power multiplayer, live services, and connected features in games we develop. You will work closely with gameplay engineers and backend developers to ensure seamless, scalable, and secure online experiences for players.

This role is ideal for someone who thrives in a creative position and is passionate about delivering high-quality, engaging player experiences.

Responsibilities:

• Develop and maintain online systems such as matchmaking, lobbies, leaderboards, achievements, and player progression.
• Integrate backend services into game clients (e.g. authentication, cloud saves, telemetry, live events).
• Collaborate with backend engineers to define APIs and data contracts.
• Optimize network performance and latency for multiplayer experiences.
• Implement security measures to protect player data and prevent cheating.
• Support live operations, including monitoring, debugging, and patching online features.
• Write clean, maintainable, and well-documented code.
• Participate in code reviews, sprint planning, and technical design discussions.

Requirements:

• 4 years of professional experience in online systems or multiplayer game development.
• Strong proficiency in C++ and Unreal Engine.
• Familiarity with multiplayer game architecture and replication models in Unreal Engine.
• Experience integrating and using Epic Online Services (EOS) in a shipped or actively developed title.
• Experience with EOS subsystems such as Sessions, Lobbies, P2P, Achievements, Stats, Leaderboards, and Voice.
• Solid understanding of networking fundamentals (TCP/UDP, client-server architecture, NAT traversal).
• Understanding of platform-specific online services (e.g. Xbox Live, PSN, Steamworks, Epic Online Services).
• Experience with RESTful APIs, WebSockets and cloud services (e.g. AWS, Azure)
• Experience with version control systems (e.g. Git, Perforce).
• Ability to debug complex issues across client-server boundaries and services.
• Excellent communication and collaboration skills.

Desirable Skills:

• Experience with backend development (Node.js, Go, Python, etc.).
• Familiarity with backend services (PlayFab, GameSparks, Firebase, Node.js/Go).
• Experience with cross-platform development (PC, console).
• Knowledge of database systems (SQL, NoSQL).
• Familiarity with DevOps practices and CI/CD pipelines.
• Experience with live service games and telemetry systems.

Demonstrate The Following:

• Passion for online gaming and multiplayer systems.
• Self-motivate and have pride in your work.
• Think critically about the requirements of a game mechanic or features.
• Create high quality Technical Designs, with appropriate code architecture and appropriate scopes for proposed work and host discussions (when required) around these.
• Take critique and guidance from others well.
• Work and communicate well within a team and studio environment.
• Proactive problem-solver with a focus on player experience and scalability.
• Be adaptive and master new tools in the process if required.
• Strong sense of ownership and accountability.

Education and Qualifications:

• Bachelor’s degree in Computer Science, Software Engineering, related field or equivalent experience.

Application & Portfolio:

Please include your CV, portfolio and cover letter (optional) within your application. If your examples are from previous works with another studio, please make sure samples are cleared for release by copyright owners. Links to an online portfolio are preferable, otherwise we accept showreels via Dropbox or other secure sharing platforms.

Send your application to – careers@flixinteractive.com

What We Offer

Based just outside Birmingham, Flix offers a friendly, nurturing work environment with the opportunity to build games as part of an extremely talented, ambitious studio. The team is made up of welcoming, passionate, active gamers that support one another in all aspects of development.

We also offer the following:

• Private healthcare.
• Additional time off over the Christmas period on top of standard holidays.
• Bonus scheme.
• Team outings and events.
• Summer BBQ + Festive party.

If you have the drive and skills for making games and think you have what it takes to work within our team then we’d love to hear from you.

For more information visit our site – Flix Interactive

Alternatively, call our recruitment team on – 01527 958 177

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##### YOUR APPLICATION WILL BE STORED ON A PRIVATE CLOUD BASED ONLINE SYSTEM FOR PROCESSING. IF YOU WOULD LIKE US TO UPDATE, DELETE OR REFINE YOUR APPLICATION PLEASE EMAIL INFO@FLIXINTERACTIVE.COM. YOUR REQUEST WILL BE APPENDED WITHIN 30 DAYS OF RECEIVING YOUR EMAIL.

##### PLEASE NOTE – IN COMPLIANCE WITH GDPR LAW YOUR DATA WILL BE USED FOR RECRUITMENT PURPOSES ONLY.

##### Flix Interactive Ltd is an equal opportunities employer committed to inclusion and diversity. We welcome applications from all suitable candidates regardless of age, disability, gender, gender reassignment, sexual orientation, pregnancy and maternity status, race, religion or belief, and marriage or civil partnership status. We also encourage applications from underrepresented groups in the gaming industry.