Senior Software Engineer (Backend and ML)

About Tofu

We're Tofu – a fast-growing SF Bay Area startup revolutionizing B2B marketing with AI. Our team, from top tech companies and elite universities, builds cutting-edge AI solutions for hyper-personalized, omni-channel content at scale. Post-Series A, we're backed by world-leading investors including Index Ventures, SignalFire, and HubSpot Ventures.

👉 See Product Demo

The Role

We're seeking exceptional backend engineers to build robust, scalable systems for our AI-driven marketing platform. As a key team member, you'll:

• Apply state-of-the-art AI models to develop agentic capabilities
• Design scalable backend systems using Python/AWS
• Optimize PostgreSQL databases & REST APIs
• Architect distributed systems for enterprise workloads

You'll work directly with customers and collaborate across teams to create seamless features.

Ideal Profile

• Passion for end-to-end problem solving in fast-paced environments
• Strong product sense and attention to detail
• 3+ years experience (big tech and startup mix preferred)
• Expertise in Python, AWS, PostgreSQL, RESTful APIs, and scalable systems
• Experience with LLMs and modern AI frameworks (e.g., LangChain, LangGraph)
• Strong system design skills