Machine Learning Engineer – Ad Sciences

InMobi · San Mateo, CA

  • Junior
  • Full-time
  • $172,500 – $210,000
  • Posted 2026-09-14
  • Confirmed live on 25 September 2026

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Job description

InMobi (Corporate)

InMobi Group is a global technology company shaping the future of agentic commerce and advertising. Through its ecosystem of businesses — including InMobi Advertising and flagship consumer platform Glance — InMobi leverages data, machine learning, and generative AI to help brands reach audiences more precisely and consumers discover products more intuitively. Glance, which is pioneering new models of agentic commerce, is owned and operated by Glance InMobi Pte. Ltd., a non-consolidated subsidiary of InMobi Pte. Ltd.

InMobi Advertising

InMobi Advertising, part of global technology company InMobi, is an agentic advertising platform helping brands and merchants achieve their business outcomes. Through its proprietary intelligence, AI-led solutions, and vast consumer reach — including flagship consumer platform Glance — InMobi Advertising delivers the omnichannel performance defining what's next in advertising and commerce. Glance is owned and operated by Glance InMobi Pte. Ltd., a non-consolidated subsidiary of InMobi Pte. Ltd. To learn more, visit advertising.inmobi.com.

Glance

Glance is an intelligent shopping agent, redefining the commerce experience. Powered by proprietary agentic intelligence and generative AI, Glance delivers a hyper-personalized consumer experience across mobile and TV — shaping the new era of shopping. Glance is operated by Glance InMobi Pte. Ltd., a non-consolidated subsidiary of global technology leader InMobi, and is backed by Mithril Capital, Google and Jio Platforms. To learn more, visit glance.com.

Overview of the Role:

We are looking for a Machine Learning Engineer to develop and optimize our ad science models, open-source LLMs, and the underlying infrastructure that powers them — with a constant eye toward performance and cost.

AI and ML sit at the core of InMobi's business, and our science teams are tackling some of the field's most interesting problems: creative optimization, user personalization, targeting, yield management, traffic shaping, and more. We're moving fast and deep into architectural research, generative AI adoption, compute scaling on the latest accelerators (GPUs/TPUs), and advances in reinforcement learning.

You'll join a team of experienced researchers and engineers who have been pushing the boundaries of ad science research for over a decade, working closely with data and platform engineering to build solutions that scale and serve the needs of every science team across the organization. This is a chance to shape the infrastructure and models behind ad intelligence operating at truly massive scale.

The Impact You'll Make:

• Build and support training pipelines and model implementations that maximize experimentation velocity

• Adapt open-source LLM infrastructure like DeepSpeed and OpenRLHF to meet InMobi-specific post-training needs

• Optimize online and batch inference for low latency and cost efficiency

• Build monitoring and evaluation solutions that keep our infrastructure reliable and our models behaving as expected

• Leverage the breadth of data features across our product portfolio to strengthen our data pipelines and unlock new features for training and inference

• Explore new platforms and ecosystems (e.g., JAX on TPUs) to help diversify our compute

• Collaborate closely with Applied Scientists on active research, contributing directly to experiment design and modeling

The Experience We Need:

• Master's degree in machine learning or a related field required; a PhD is a plus

• At least 3 years of experience as a Machine Learning Engineer, building state-of-the-art machine learning/deep learning systems at extreme scale

• Expertise in large-scale distributed data systems, including high-performance relational and key-value stores, orchestrators like Airflow, and data transformations in Spark

• Expertise in Python; familiarity with Java (especially in high-performance serving systems) is a plus

• Expertise in PyTorch or a similar ecosystem

• Experience with accelerator-based inference systems such as Triton, and optimization backends like ONNX and TensorRT

• Experience with cloud platforms and container orchestration using Kubernetes

• Knowledge of deep recommender systems, including two-tower and attention-based architectures, is a plus

• Knowledge of reinforcement learning systems — including RL approaches, reward signals, and post-training feedback loops — is a plus

• Understanding of the ads ecosystem (OpenRTB, SSPs, DSPs, ad exchanges, MMPs) is a plus

At InMobi, you’ll be surrounded by people who…

• Think big and act fast: We’re entrepreneurial, thrive in ambiguity, and love solving high-impact problems

• Are passionate, fanatically driven, and take immense pride in their work: We care deeply about the impact we create and continuously push our potential

• Own their outcomes: We take responsibility, make bold decisions, and execute with confidence

• Embrace freedom with accountability: We value

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