Lead Client Engineer

First Fun; Singapore; On-site; SGD 180,000 - 280,000; Full time

Job summary

First Fun seeks a Lead Client Engineer to own the client-side architecture for a next‑gen mobile game. You will guide core gameplay systems, UI, rendering, assets, and live-service client infrastructure, coordinating with design, art, and backend teams.

You will lead production-quality code, shape engineering direction, and promote AI-assisted workflows for rapid prototyping, testing, and content iteration across iOS and Android.

Qualifications

• 6+ years of professional game development experience, including leadership experience.
• Proficiency with Unity, Unreal Engine, or other real-time engines; strong coding in C# and/or C++.
• Experience designing and shipping scalable client-side systems for commercial games.

Responsibilities

• Lead architecture, development, and optimization of a scalable mobile game client.
• Build and maintain core gameplay systems, UI, animation integration, networking, and live-service features.
• Drive client performance across rendering, memory, CPU/GPU, loading, and device compatibility on iOS and Android.
• Collaborate with designers, artists, backend engineers, QA, and product teams to deliver polished gameplay experiences.
• Design systems to support rapid content iteration, remote configuration, analytics, feature flags, and seasonal live ops.
• Mentor engineers, establish engineering best practices, and provide technical leadership across the client team.
• Champion AI-assisted development workflows to improve prototyping, testing, tooling, and engineering productivity.

Skills

Leadership

Real-time game development

Unity

Unreal Engine

C#

C++

Cross-functional collaboration

Mentoring engineers

Tools

CI/CD

Analytics

Job description

We are seeking a highly experienced Lead Client Engineer to own the client-side architecture and technical execution for our next-generation mobile game. This role will lead the development of core gameplay systems, client performance, rendering integration, UI frameworks, asset pipelines, and live-service client infrastructure.

You will work closely with backend engineers, game designers, artists, technical artists, animators, and product stakeholders to build a responsive, scalable, and highly polished mobile game experience. The ideal candidate has strong engineering fundamentals, deep experience with real-time game development, and the ability to translate product and gameplay goals into robust client-side systems.

This is a leadership role for someone who can both write high-quality production code and guide the engineering direction of the client team. You will help build a modern development workflow that embraces AI-assisted coding, automated testing, rapid prototyping, and efficient content iteration.

Responsibilities

• Lead the architecture, development, and optimization of a scalable mobile game client.
• Build and maintain core gameplay systems, UI, animation integration, networking, and live-service features.
• Drive client performance across rendering, memory, CPU/GPU, loading, and device compatibility on iOS and Android.
• Collaborate with designers, artists, backend engineers, QA, and product teams to deliver polished gameplay experiences.
• Design systems that support rapid content iteration, remote configuration, analytics, feature flags, and seasonal live operations.
• Mentor engineers, establish engineering best practices, and provide technical leadership across the client team.
• Champion AI-assisted development workflows to improve prototyping, testing, tooling, and engineering productivity.

Requirements

• 6+ years of professional game development experience, including 2+ years in a technical leadership role.
• Strong experience with Unity, Unreal Engine, or another real-time game engine, with proficiency in C#, C++, or similar languages.
• Proven track record of designing and shipping scalable client-side systems for commercial games.
• Deep understanding of mobile game performance optimization, debugging, profiling, networking, and platform constraints.
• Experience building gameplay systems, UI, animation integration, asset management, and live-service features.
• Familiarity with backend APIs, analytics, remote configuration, CI/CD, and production monitoring.
• Strong leadership, communication, and cross-functional collaboration skills, with experience mentoring engineers.
• Passion for mobile games and interest in leveraging AI-assisted development tools to improve engineering efficiency.