Senior Artificial Intelligence Engineer, PubNub

• 5+ years building production systems in Python, TypeScript, or Rust (ideally more than one)
• 1+ year delivering AI/LLM features to external users
• Experience scaling services beyond 100k req/s or equivalent event volumes
• Deep knowledge of ML tooling (PyTorch/TensorFlow, transformers, vector search, distributed training, experiment tracking)
• Strong containerization/orchestration skills (Docker, Kubernetes)
• Comfortable using AI coding copilots as part of your workflow
• Excellent written and verbal English communication

Desirable

• As a Senior AI Engineer, you’ll architect and build cloud-native services that combine PubNub’s real-time streams with state-of-the-art AI
• From retrieval-augmented generation and low-latency inference to developer tooling, you’ll create the foundation of PubNub’s intelligence platform
• This is a greenfield opportunity to define architecture, drive scale, and deliver AI capabilities that power products across industries
• Architect and build services that fuse real-time data streams with NLP, moderation, recommendation, and custom models
• Own the full ML lifecycle: pipelines, fine-tuning, evaluation, packaging, inference, and observability
• Develop internal tooling (SDKs, CLI, CI/CD hooks) so teams can add AI with a single API call
• Optimize for sub-100 ms inference at global scale using CUDA, TensorRT, vLLM, Rust, and caching strategies
• Partner with product and solution architects to deliver reusable AI capabilities: content safety, sentiment, personalization, anomaly detection, and more
• Champion responsible AI practices: robust evaluation, guardrails, governance, and transparent feedback loops