Senior Game Engineer (Mobile)

TL;DR

Senior Game Engineer (Mobile): Building and optimizing features and platform reliability for mobile titles with an accent on developer productivity, CI/CD, and Unity architecture. Focus on end-to-end implementation of player-facing features, improving build pipelines, and driving technical standards for live mobile games.

Location: Hybrid in **London, UK**. Must work from the Kings Cross studio **three days a week (Monday, Thursday, and Friday)**.

Company

hirify.global creates delightful free-to-play mobile games like Love & Pies, focusing on player experience and collaborative development.

What you will do

• Deliver high-impact player features end-to-end with clear scoping, communication of trade-offs, and quality delivery.
• Own and improve build/CI/CD pipelines and release automation, including caching, test gates, and rollback paths.
• Lead Unity project architecture, shared packages/modules, and upgrade strategies.
• Establish standards for telemetry, profiling, and performance budgets, driving regression detection.
• Implement gameplay features and UI flows in Unity/C#, collaborating with Design, Product, Content, and QA.
• Maintain performance budgets for new features and harden them for LiveOps with remote config/feature flags.

Requirements

• Senior-level Unity/C# experience delivering complex features and shared systems at scale.
• Proven track record shipping player-facing features in live mobile games with end-to-end ownership.
• Strong Unity skills across UI/UX flows, scene/prefab architecture, and gameplay systems.
• Comfortable defining acceptance criteria, writing unit/integration tests, and partnering with QA on test plans.
• Demonstrable expertise in CI/CD for mobile, package/SDK management, and release automation.
• **Must be based in London, UK and work from the Kings Cross studio three days a week (Monday, Thursday, and Friday).**

Nice to have

• Experience designing and running A/B tests and telemetry for feature validation.
• Background in F2P feature implementation (progression systems, economies, events, or narrative delivery).
• Experience with Kubernetes/GKE build farms, PlayFab/Metaplay SDKs, and mobile store pipelines.

Culture & Benefits

• Generous £1,000 annual development budget after probation for professional growth.
• Fully stocked kitchens with delicious treats, drinks, and provided breakfast/lunch supplies.
• Weekly team lunch every Friday provided by Just Eat.
• Contributory pension scheme with tax-free contributions.
• Opportunity to own a stake in the company through tax-advantaged stock options.
• Fully comprehensive private medical care with premiums paid by hirify.global, plus 24/7 mental health support via Spill.
• 28 days of annual leave, including three company holiday days around Christmas.
• £250 work-from-home budget to ensure a proper home setup.