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Founding AI Engineer

Bjak · AI EngineeringA1
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full-timePosted 10mo ago

About the role

A founding technical role focused on building a global consumer AI application by shaping core model and system architecture, training pipelines, and experimental approaches.

Responsibilities

  • Build end-to-end training pipelines: data → training → eval → inference
  • Design new model architectures or adapt open-source frontier models
  • Fine-tune models using state-of-the-art methods (LoRA/QLoRA, SFT, DPO, distillation)
  • Architect scalable inference systems using vLLM / TensorRT-LLM / DeepSpeed
  • Build data systems for high-quality synthetic and real-world training data
  • Develop alignment, safety, and guardrail strategies
  • Design evaluation frameworks across performance, robustness, safety, and bias
  • Own deployment: GPU optimization, latency reduction, scaling policies
  • Shape early product direction, experiment with new use cases, and build AI-powered experiences from zero
  • Explore frontier techniques: retrieval-augmented training, mixture-of-experts, distillation, multi-agent orchestration, multimodal models

Qualifications

  • Strong background in deep learning and transformer architectures
  • Hands-on experience training or fine-tuning large models (LLMs or vision models)
  • Proficiency with PyTorch, JAX, or TensorFlow
  • Experience with distributed training frameworks (DeepSpeed, FSDP, Megatron, ZeRO, Ray)
  • Strong software engineering skills — writing robust, production-grade systems
  • Experience with GPU optimization: memory efficiency, quantization, mixed precision
  • Comfortable owning ambiguous, zero-to-one technical problems end-to-end

Skills

Required:Deep learning & transformer architecturesModel training & fine-tuningPyTorch / JAX / TensorFlowDistributed training frameworksGPU optimizationSoftware engineering

Benefits

  • Remote-first flexibility
  • Competitive compensation and performance-based bonuses
  • Insurance coverage, flexible time off, and global travel insurance
  • Opportunity to shape a new global AI product from zero
  • A small, senior, high-performance team working directly with founders
Last updated Dec 11, 2025. Interested? Apply on the company site.
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