Principal-Level Rendering Engineer (C++)

Location: Hybrid in Paris or London

Company

hirify.global is building Nyx, a renderer that delivers offline quality at realtime performance.

What you will do

• Own frame-time budgets and drive GPU/CPU rendering performance across target platforms.
• Profile, diagnose, and optimize geometry, shading, lighting, post-processing, and the full rendering pipeline.
• Adapt profiling methods to Nyx's non-standard hybrid pipeline and build custom instrumentation and performance counters.
• Evolve hybrid rasterization and ray-tracing rendering paths.
• Review rendering architecture, mentor senior engineers, and set a high technical bar.
• Work with hardware vendors on low-level GPU issues and target hardware.

Requirements

• 10+ years of real-time rendering experience, including shipped AAA titles where rendering performance was owned.
• Expertise with PIX, Razor GPU/CPU, RGP, Nsight, raw GPU counters, and profiling unfamiliar pipelines.
• Deep knowledge of modern GPU architectures, including AMD RDNA, wave occupancy, cache behavior, and async compute.
• Strong low-level command of D3D12, Vulkan, and at least one console graphics API.
• Hands-on experience building or optimizing hybrid rendering pipelines.
• Expert-level C++ and HLSL/GLSL skills, including shader disassembly when required.

Nice to have

• Experience with non-standard pipelines such as neural rendering, splatting, or offline/realtime hybrids.
• Experience integrating and tuning DLSS or FSR upscalers and frame generation.
• Contributions to engine-level rendering architecture in Unreal Engine or proprietary engines.

Culture & Benefits

• Hybrid work arrangement in Paris or London.
• Direct collaboration with hardware vendors on GPU performance and hardware issues.