Bruno Evangelista — AI Researcher at OpenAI

Researcher on reasoning and agents — I contributed to GPT-5.x through 5.6 across RL datasets, agentic research / coding, and evals. Previously built ML and AR systems at Meta, Amazon and Sony. Opinions are my own.

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Earlier Projects

vfastml Python PyTorch

Inference engine for text and image-to-image.

LLMs Learning CUDA PyTorch

ML from scratch to Llama 2, Mistral & Phi-2.

AI Chat 7B Python PyTorch

Server/client chatbot with anime personas.

DX12 Samples C++ DirectX12

Header-only D3D12 wrap for fast prototype.

WebGL PBR Materials JS WebGL

Vertex-optimized and index k-cached meshes with Physically Based materials.

XNAnimation C# XNA Xbox

Skeletal animation for XNA — cross-fade blending & interpolation with bones.

Fur Rendering C++ DirectX10

Real-time fur over arbitrary meshes using layered shells and environment mapping.

Virtual Surfaces C++ DirectX9

Virtual Meshes on Plane: Displacement, Normal, Parallax, Relief Map.

Multiplayer Skinned C++ OpenGL

Real-time UDP network demo, up to 4 players.

Brain Visualizer OpenGL Linux

Interactive 3D visualization of brain data.

Terrain & Water Caustics OpenGL

Real-time terrain with animated water and caustics.

EvangelistaOS Assembly x86

Tiny x86 assembly kernel — FAT12 fs, round-robin scheduler.

Experience

• 2024 — nowOpenAI · Member of Technical Staff (Berry Reasoning)

  Codex and RL Capabilities on long-horizon agentic research and coding: RL datasets, training runs, evals and recursive self-improvement.

• 2024Niantic · Engineering Lead, ML/AR

  ARDK ML/AR platform for Pokémon GO, Monster Hunter & Peridot.

• 2022 — 24QuintoAndar · Head of Engineering

  Drove an ML real-estate image model from research to production; led consumer & B2B ($20B managed).

• 2015 — 22Meta · Instagram, Facebook, Oculus
  • Supported creation for Reels, Stories and Live. Shipped AI-creation video editing, filters, beauty.
  • Created Paris, IG's #1 filter; architected IGL Graphics (Metal/Vulkan); led Oculus systems & VR Avatars.
• 2013 — 15Amazon Lab126

  Novel device-to-device screen-mirroring techniques; cross-device messaging; Thrift codegen optimizations.

• 2012 — 13Sony Computer Entertainment

  Shipped PS4's LCUE shader engine — 30% faster than AMD's driver and used by most day-one titles.

• earlierEurocom · Qualcomm · Tectoy

  Shipped GoldenEye 007: Reload, Disney Universe, Rio (PS3/Xbox); FIFA, Need for Speed Carbon (mobile).

Earlier Publications

Patents

• US 11,069,094 Generating Realistic Makeup in a Digital Video Stream
• US 10,885,697 Systems and Methods for Generating Augmented-Reality Makeup Effects
• US 11,871,139 Multi-Camera Recording Using a Visual Media Recording Device
• US 9,972,064 Non-Intrusive and Low-Power Recording
• US 9,392,315 Remote Display Graphics
• pending Regionally Enhancing Faces in a Digital Video Stream
• pending Intelligently Enhancing Media Content Items