Research Engineer (AI)

Location: San Mateo or New York, United States

Salary: $210,000–$320,000 per year, plus equity

Company

hirify.global provides a platform for building, training, and serving specialized AI models across text, image, embedding, audio, and multimodal workloads.

What you will do

• Explore new model architectures, training objectives, and optimization techniques through hypothesis-driven experiments.
• Implement and reproduce results from recent machine learning research, identify limitations, and extend methods to larger datasets and models.
• Design, implement, and maintain high-performance distributed training systems for large GPU clusters.
• Optimize training loops, data loaders, communication overhead, and GPU cluster utilization.
• Translate mathematical research concepts into clean, reliable, and efficient code.
• Collaborate with research scientists on tooling, hardware-aware experiments, and infrastructure improvements.

Requirements

• Strong programming skills in Python, C++, or Rust.
• Practical knowledge of PyTorch, JAX, or TensorFlow.
• Experience with distributed systems and parallel computing, including technologies such as CUDA, NCCL, or MPI.
• Strong foundation in linear algebra, calculus, probability, and statistics.
• Experience implementing complex deep learning algorithms from scratch.
• Work location: San Mateo or New York, United States.

Nice to have

• Master’s or PhD in computer science, machine learning, physics, mathematics, or a related field, or equivalent industry experience.
• Experience with CUDA, Triton, or hardware co-design.
• Familiarity with large language model training.
• Familiarity with inference and inference engines such as SGLang and vLLM.

Culture & Benefits

• Work on AI infrastructure, including low-latency inference and scalable model serving.
• Build production AI technology using open models across multiple modalities.
• Collaborate with engineers and AI researchers on high-impact technical problems.
• Equity is included in the compensation package.
• Inclusive, equal-opportunity working environment.