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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Network Engineer - **Company:** Flix - **Location:** Birmingham, UK (Remote available) - **Experience:** Expert - **Contract:** Contract - **Skills:** Profiling, Code Review, Software Debugging, Network Architecture, Performance Tuning, Computer Gaming, Computer Networking Systems, Test-Driven Development (TDD), Low Latency - **Published:** August 18, 2026 - **Apply:** https://www.flixinteractive.com/vacancies/senior-principal-network-engineer/ ## About the Role * Strong hands-on experience developing multiplayer networking and online game systems. * Deep understanding of replication, synchronisation, latency, connectivity, and multiplayer performance optimisation. * Experience defining technical architecture and developing scalable, maintainable game systems. * Strong knowledge of profiling, optimisation, tools development, porting, console development, and test-driven development. * Ability to investigate and resolve complex technical issues across gameplay, online systems, and platform-specific environments. * Excellent communication, mentoring, and technical decision-making skills. ## Description As a Senior Principal Network Engineer, you will be a hands-on technical expert responsible for designing, developing, and optimising the networking architecture and online systems that support reliable multiplayer game experiences. You will personally solve complex technical challenges across connectivity, replication, performance, and platform integration, while helping guide technical decisions and engineering standards across the project., 1. Network Systems Development: + Design, implement, and maintain scalable network systems that support responsive, stable, and secure multiplayer gameplay. + Diagnose and resolve complex issues relating to connectivity, synchronisation, replication, latency, and online player experiences. 2. Technical Architecture and Strategy: + Define and evolve networking architecture, ensuring systems are robust, maintainable, and appropriate for current and future development needs. + Provide practical technical input into system design, technical planning, and the evaluation of tools, technologies, and implementation approaches. 3. Performance and Platform Optimisation: + Profile and optimise network performance, gameplay systems, memory use, and runtime behaviour across supported platforms. + Support porting and platform integration work, identifying technical risks early and ensuring solutions meet required performance and quality standards. 4. Hands-On Technical Leadership: + Lead by example through direct development work, debugging, prototyping, and implementation of critical technical solutions. + Support code reviews, mentor engineers, and share expertise in networked systems, optimisation, architecture, and test-driven development., Based just outside Birmingham, Flix is made up of welcoming, passionate, active gamers that support one another in all aspects of development. We offer you to: * Join a friendly, nurturing work environment with the opportunity to build games as part of an extremely talented, ambitious studio. * Work on market-leading AAA titles and IP with globally reputable studio and publisher partners. * Be part of a sustainably growing game developer studio as we consciously expand our team and projects on a case-by-case basis. * Learn within an independent studio across a wide range of projects and opportunities both internal and external., If you love making games and you would like to contribute to a team and project where your drive and skills will be welcomed and encouraged, then we would love to hear from you. GDPR COMPLIANCE - When applying for this job you're authorising Flix Interactive to store your application information and distribute it to the appropriate email inboxes of senior team members in order to review your role eligibility. 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. ## Related Videos - [Profiling Symfony & PHP apps with Blackfire](https://www.wearedevelopers.com/videos/265-profiling-symfony-php-apps-with-blackfire) - [Are Code Reviews Worth It? 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