Software Engineer | AI Infra

Description

The AI team at the company is hiring a software engineer for AI infrastructure to help build state-of-the-art large language models.

The team wants someone who is highly effective and brings positive energy, empathy, and kindness to work every day.

The role suits someone who likes building consumer experiences and products at a world-class level in a fast-moving setting.

You will help build the models that power the company's products and take on both engineering and research work.

Your work will cover model architecture, data curation, training and inference infrastructure, evaluation methods, and alignment with reinforcement learning from human feedback (RLHF), among other frontier AI topics.

The team's goal is to build AI that stays controllable, safety-aligned, and tied to human values, and to deliver models that reach billions of users.

Starting January 26, 2026, employees must work from a designated office at least four days a week if they live within 50 miles (U.S.) or 25 miles (non-U.S., country-specific) of that office. This depends on local law and may differ by jurisdiction.

Responsibilities

• Build software for pre-training and post-training infrastructure, including benchmarking, evaluation, routing, and backend systems.
• Collect data and insights to shape the roadmap for LLM training compute.
• Help build AI models that power the company's products.
• Work around obstacles so your work reaches users quickly, and ship in iterations.
• Work in a fast-paced, design-led product development cycle.
• Live the company's culture and values.

Requirements

• A bachelor's degree in computer science or a related technical field and 4+ years of engineering experience coding in languages such as C, C++, Java, JavaScript, or Python, or equivalent experience.
• Optional: a master's degree in computer science or a related technical field and 6+ years of engineering experience coding in languages such as C, C++, Java, JavaScript, or Python, or a bachelor's degree in the same field and 8+ years of that experience, or equivalent experience.
• Optional: experience with generative AI.
• Optional: experience with distributed computing.
• Optional: experience leading technical projects and backing architectural decisions with data.

Conditions

Software Engineering IC4 base pay across the U.S. is typically USD $119,800 - $234,700 per year; in the San Francisco Bay area and New York City metropolitan area it is USD $160,200 - $261,000 per year.

Software Engineering IC5 base pay across the U.S. is typically USD $142,800 - $274,800 per year; in the San Francisco Bay area and New York City metropolitan area it is USD $188,000 - $304,200 per year.

The position stays open for at least 5 days, and applications are accepted on a rolling basis until it is filled.

Starting January 26, 2026, you must work from a designated office at least four days a week if you live within 50 miles (U.S.) or 25 miles (non-U.S., country-specific) of it.

The company provides equal opportunity to all applicants.

Benefits

• Some roles may be eligible for benefits and other compensation.