Senior Game Engine Engineer, Platform

Worldscape · Redmond, WA · 5 days ago

On-siteEngineeringFull-time

Innovation Mindset: Passion for pushing the boundaries of real-time physics in interactive simulation.
Leadership & Mentorship: Ability to guide developers, set technical direction for an area, and enforce best practices
Problem-Solving: Creative and analytical approach to complex simulation challenges
Communication: Clear articulation of technical concepts to non-technical stakeholders

Participate in setting physics architecture: Define data models, simulation loops, solver strategies, and integration points across engine and simulation systems
Deliver core physics features: Collision detection (broad-phase/narrow-phase), entity controllers, vehicle dynamics with an emphasis on orbital mechanics, particles/fluid mechanics (with an emphasis on atmospheric dynamics), etc
Integrate with simulation logic (gameplay) & animation: Build physics-driven interactions, authoring tools, and runtime hooks (e.g., inverse kinematics, state machines, event systems)
Performance ownership: Profile, optimize, and budget frame time and memory across platforms; lead multi-threading/Job System/SIMD efforts; evaluate GPU compute opportunities
Stability & robustness: Establish test suites, golden scenarios, and verification and validation practices; reduce edge-case instability (stacking, tunneling, jitter, constraint drift)
Tooling & workflow: Build/debug tools, visualizers, probes, and authoring pipelines that accelerate designer iteration and QA efficiency
Cross-functional leadership: Partner with back-end, AI, data pipeline, and platform teams; communicate constraints/trade-offs; align milestones with production
Participate in code reviews, design docs, and coding standards; cultivate a high bar for craft, documentation, and reproducibility

Education: BS/MS in Computer Science, Software Engineering, Physics, Mathematics (or equivalent practical experience)
Experience: 5+ years in real-time/game physics engineering; 2+ shipped titles with substantial physics ownership (AA/AAA preferred)
Programming: Expert C++ (modern standards), data-oriented design, memory management, profiling/debugging (VTune, PIX, Nsight, RenderDoc, etc.)
Rigid-body dynamics, collision detection (GJK, SAT, continuous collision detection/time of impact), integration schemes (semi-implicit Euler, RK, constraint solvers)
Numerical stability, error control, and performance trade-offs under real-time constraints
Engine Integration: Experience integrating physics with animation (animation blending, IK), gameplay systems, and rendering pipelines
Performance: Multi-threading/job systems, SIMD/vectorization, cache-friendly data structures, frame/memory budgeting across platforms
Collaboration: Proven ability to lead cross-disciplinary efforts and communicate complex technical topics clearly

5+ years’ experience in Modern Game Engines & Middleware: Unreal Engine (Chaos), Unity (DOTS/Physics), Havok, Bullet, PhysX
Custom engine experience is strongly preferred
3+ years’ experience in Advanced Simulation: Fracture systems, granular materials, vehicle tire models, buoyancy/aero effects; GPU compute (CUDA, compute shaders)
Experience with existing physics models and systems integration
Networking: Deterministic simulation strategies, rollback/prediction, server authority models, cross-platform latency mitigation
Console/Platform: Shipping experience on Xbox, PlayStation, Switch, and PC; familiarity with platform TRCs/TCRs and performance certification
Tooling & Scripting: Python/C#/Lua for tools and editor extensions; in-engine visualization/debugging overlays
Optimization Expertise: Broad-phase structures (sweep-and-prune, BVH), island building, sleeping strategies, CCD tunneling avoidance; job scheduling and affinity tuning
Content Pipelines: Collaboration with design/tech art to create authoring guidelines for physics assets; LOD strategies for physics complexity

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