Senior Software Engineer – AI Safety & Alignment

Join Anthropic. Build AI that actually understands what people need.

We're solving one of the most important technical challenges of our time: creating AI systems that are safer, more reliable, and genuinely aligned with human values. This isn't academic research. The systems you build will directly impact how millions of people interact with AI.

The Opportunity

You'll own significant technical challenges in machine learning infrastructure, training systems, and AI evaluation. This role demands both deep technical expertise and strong judgment. You'll work alongside exceptional engineers and researchers who care about getting the hard problems right, not just shipping fast.

If you're excited by foundational problems in AI safety, deep learning systems, and the chance to shape how transformative technology develops, this is your role.

What You'll Tackle

• Design and implement core infrastructure for training, evaluating, and deploying large language models

• Build systems that help us understand and measure AI behavior at scale

• Collaborate on research and engineering challenges where the path forward isn't obvious

• Contribute to architectural decisions that balance performance, safety, and reliability

• Take ownership of significant projects from conception through deployment

What We're Looking For

• 5+ years of software engineering experience with demonstrated expertise in systems design or machine learning

• Strong programming fundamentals (Python, C++, or similar) and comfort with modern ML frameworks

• Experience shipping real systems at scale, ideally in deep learning or infrastructure

• The ability to reason clearly about complex technical tradeoffs

• Intellectual curiosity and genuine interest in AI safety and alignment

• Collaborative spirit and strong communication skills

Why Anthropic

We're backed by leading investors and researchers. We've published influential work in interpretability and AI safety. We invest seriously in technical infrastructure and a thoughtful work environment. You'll work with people who've shaped the field and genuinely care about building AI responsibly.

This is foundational work. The decisions we make now about how to build safe, aligned AI systems will matter for decades. We need talented engineers who want to be part of that.

Ready to work on problems that matter?