Senior Unity Game Developer in Montréal

Excel at the intersection of client engineering and cloud-driven, multiplayer systems to build the future of AI-powered storytelling games.

About Storycraft: Storycraft is an AI-powered, mobile-first social sandbox where players don't just play stories—they build them. Think Minecraft meets The Sims meets Wattpad: a new genre of creative, social storytelling where AI helps players bring their imagination to life. Backed by top-tier investors who have invested in Open AI, Unity, Supercell and others, we're building a platform that reimagines storytelling as play—combining intuitive creation tools, emotionally expressive characters, and collaborative world-building.

The Role: We're hiring a Senior Unity Game Developer who excels at the intersection of client engineering and cloud-driven, multiplayer systems. You'll design and build features for the Unity front end that power Storycraft's mobile experience, and stretch into our Go backend (following existing patterns) to own features end-to-end. From buttery-smooth rendering to cloud-native streamed gameplay, you'll ensure players feel the magic—instantly and reliably. This is a senior individual contributor engineering role. You'll lead through hands-on coding, collaborating closely with another senior Unity developer, backend, product, and design teams to deliver performant, testable, and maintainable features. The ideal candidate thinks like a full-stack engineer, loves high-quality codebases, and understands the nuances of a networked multiplayer game on mobile.

What You'll Do:

• Prototype and ship new gameplay features that showcase Storycraft's AI-powered creation tools and social systems.
• Evolve Storycraft's Unity client: design and implement new features, test and optimize performance, and integrate with mobile platforms (iOS & Android).
• Integrate features with our websocket-based multiplayer layer, ensuring low-latency and state synchronization with the Go backend.
• Collaborate with our backend engineer to design API contracts and occasionally contribute your own Go code using our existing frameworks and patterns.
• Optimize rendering, memory, and bandwidth for cloud-streamed play and AI-driven features.
• Write testable, modular C# code and introduce/maintain automated tests (unit, integration, play-mode) in Unity.
• Mentor peers through thoughtful code reviews and technical guidance; champion engineering best practices.
• Monitor live metrics, debug production issues, and deliver rapid fixes without sacrificing code quality.

You Bring:

• 5+ years professional experience developing games in Unity/C#, including at least one shipped mobile or cross-platform live service game.
• AI-fluent or AI-literate: Excited to share how AI tools can accelerate your development workflows and learn to integrate gameplay with AI technology.
• Strong understanding of networked gameplay architectures (authoritative server, client prediction, reconciliation, websockets or similar).
• Experience collaborating with backend teams and contributing full-stack. You can read and write basic server-side code using existing frameworks and patterns.
• Strong grasp of software architecture, design patterns, and automated testing strategies in Unity.
• Proven track record optimizing performance, memory, and build size for mobile devices and/or streamed game clients.
• Familiarity with CI/CD pipelines, and modern DevOps practices.
• Startup-ready: autonomous, adaptable, bias to action, and energized by rapid iteration.

Bonus Points For:

• Based in Canada and/or ET timezone.
• Demonstrated expertise in AI-assisted programming workflows.
• Prior startup experience or shipping a complete game on your own.
• Prior experience integrating ECS-style, data-oriented architectures in Unity.
• Experience with integrating LLMs or Diffusion models in production and/or assessing AI performance through evals.
• Experience with the Go programming language.
• Passion for sandbox, creative, or social storytelling games—and a personal creative practice.

What It Means to Build at Storycraft: This isn't just a job—it's a rare opportunity to co-create a new category of game at the intersection of storytelling, AI, and player expression. We're a lean, high-trust team building fast, learning constantly, and thinking long-term. That means:

• You'll be at the vanguard of AI. Storycraft embraces modern AI technology as a core part of its game features, development team processes, and company operations.
• You'll be scrappy and smart. We use AI, feedback loops, and focused iteration to do more with less.
• You'll have real ownership. You won't be 'supporting' the product—you'll be shaping it every day.
• You'll grow faster than anywhere else. This is a career-defining opportunity to learn, stretch, and contribute at a level few companies allow.
• You'll have equity with real upside. We're building something ambitious. If we win, you win.
• You'll make an impact that matters. Players already say Storycraft 'feels like magic.' You'll help scale that magic into something unforgettable.
• We're not looking for passengers—we're looking for builders, owners, and technical leaders who want to leave their mark.