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  3. AI/ML Engineer, AI Infrastructure
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Role description

AI/ML Engineer, AI Infrastructure

SB Telecom America Corp. logoSB Telecom America Corp.
AI-native
TypeFull-time
WorkplaceOn-site
SeniorityMid-level
Salary$150,000–$250,000
LocationSunnyvale, CA
Posted5/22/2026
Engineering

About Infrinia.ai,
powered by SoftBank: SoftBank is making significant investments in

infrastructure for AI. Through its wholly owned US subsidiary, SoftBank Corp. has established

Infrinia team in Silicon Valley, focused on infrastructure software for AI and AI foundations for

mobile networks. Our goals are to challenge the norms and create products making use of our

SOTA infrastructure (like Nvidia GB200 NVL72, MGX and DGX Grace & Hopper platforms) and

cloud-native software. These products are geared towards centralized AI data centers as well

as distributed AI Radio Access Network (AI RAN) data centers. We are looking for experienced

practitioners who are inspired to bring innovation and build transformative products.

Minimum Qualifications:

  • Bachelor's degree in Computer Science, Electrical Engineering, Mathematics, Statistics, or related field.
  • 3+ years of experience in machine learning, deep learning, and software engineering.
  • Proficiency in Python and experience with C/C++.
  • Experience with major AI/ML frameworks such as PyTorch, TensorFlow, or JAX.
  • Solid understanding of data structures, algorithms, and software design principles.

Preferred Qualifications:

  • Master's or PhD in a relevant field (CS, AI/ML, etc.).
  • Experience with Large Language Models (LLMs), Generative AI, or Computer Vision.
  • Familiarity with distributed training techniques and tools (e.g., Ray, DeepSpeed, Megatron).
  • Experience optimizing models for GPU inference (TensorRT, Triton Inference Server).
  • Knowledge of MLOps practices and tools (Kubeflow, MLflow).

Role:
Be a key member of the AI engineering team responsible for developing and optimizing advanced AI models and workloads that run on our high-performance GPU systems. You will leverage our SOTA infrastructure to train, fine-tune, and serve large-scale models. Drive innovation in model architecture and training efficiency to maximize performance and resource utilization. Work closely with infrastructure engineers, product management, and researchers to bridge the gap between hardware capabilities and AI application requirements.

Responsibilities:

  • Design, implement, and train state-of-the-art machine learning models for various applications (e.g., NLP, Computer Vision, Network Optimization).
  • Optimize AI workloads for performance and scalability on large-scale GPU clusters such as GB200 NVL72 with Dynamo, vLLM etc.
  • Collaborate with the team to co-design software and hardware solutions for efficient AI processing.
  • Develop tools and pipelines for data processing, model evaluation, and deployment.
  • Stay up-to-date with the latest advancements in AI research and technology.
  • Contribute to Product Definition (PRD) and program execution (sprint) planning.
  • Role model and foster a culture of humility and innovation for product delivery.

Salary:
The base salary for this position ranges from ($150,000-$250,000), with additional attractive biannual bonus and benefits.

Relevant archetypes

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Company info

SB Telecom America Corp. logo

SB Telecom America Corp.

SB Telecom America, Corp. We offer a wide range of innovative technology solutions to help transform and drive your business'​ growth and success. Our competitive advantage comes from a strong backbone and diverse product portfolio with SoftBank Group. Rooting from our corporate philosophy of “Information Revolution, Happiness for Everyone” we are expanding in the areas of AI, IoT, Security and Digital Marketing to create new and innovative business values with our existing clients, as well as new clients. As part of this commitment to innovation, SoftBank is at the forefront of AI infrastructure development, investing in cutting-edge technologies to power the future of AI. Our new U.S. center in Silicon Valley is dedicated to advancing infrastructure software and AI foundations for mobile networks. With state-of-the-art GPU computing platforms alongside cloud-native software, we’re redefining possibilities in centralized AI data centers and distributed AI Radio Access Network (AI-RA

HQLos Angeles, US
Size39 employees
Industry
Technology, Information and Internet
Tech stacklinux-kernel, prometheus, golang, sam-crm, kubernetes, etcd, containerd, ml-flow, nvidia-dgx, ansible, abstract, benchmark, grafana, nvidia, elk, kubeflow, microsoft-excel, mlflow, python, microsoft-powerpoint

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