Backend developer

Next-generation autonomous AI systems are being built to move far beyond simple interaction — toward software capable of executing complex, real-world operations at scale. Backed by $5.1M from leading founders and venture investors, the company operates at the intersection of autonomous systems, distributed infrastructure, and applied AI, laying the foundation for truly self-operating digital entities.
At this pivotal stage of growth, we are looking for a Senior Software Engineer (Core Infrastructure) to play a central role in architecting and scaling the distributed systems that orchestrate thousands of intelligent AI agents in dynamic, real-world environments. This is an opportunity to shape the backbone of a platform designed for massive scale from day one - where your infrastructure decisions directly impact how autonomous systems perform in production.
 

Your responsibilities will include:

• Design and build high-performance backend systems that support AI-native product generation at scale
• Develop and maintain Python-based distributed services powering agent workflows
• Build and optimize API-heavy architectures using both Python and Node.js
• Implement robust orchestration layers for managing large numbers of AI agents
• Design and maintain evaluation and feedback loops to continuously improve AI-generated outputs
• Develop asynchronous workflows supporting complex agent lifecycles
• Ensure reliability, fault tolerance, and scalability across distributed components
• Optimize integrations with multiple model and data providers
• Build internal tooling for observability, monitoring, and system health tracking
• Collaborate closely with the Bay Area team within full Scrum ceremonies (daily standups, grooming, sprint planning)
• Take ownership of backend components from design through production

What we expect from you:

• Core requirements
  • Strong backend engineering experience (Mid+ / Senior level)
  • Production experience with Python (required)
  • Solid hands-on experience with Node.js for API integrations (required)
  • Experience building API-heavy systems
  • Understanding of LLM-based systems and AI-native development patterns
  • Ability to quickly onboard and operate as a strong individual contributor
  • Experience working in fully integrated Scrum teams
  • Strong communication skills and proactive ownership mindset
  • Availability to work as a fully embedded team member (not part-time across many projects)
  • Experience with agent orchestration systems
  • Familiarity with LangChain, LangGraph, or similar ecosystems
  • Background in distributed systems and asynchronous architectures
  • Experience designing evaluation/feedback loops for AI systems
  • Experience with PostgreSQL, Redis, or async job queues
• Nice to have
  • Experience with multi-agent architectures
  • Experience with observability and tracing systems
  • Exposure to GPU-enabled or high-throughput infrastructure

We offer:

• The opportunity to join at a critical inflection point as we scale beyond stealth
• Ownership over core backend and AI infrastructure components
• A technically ambitious environment building AI-native systems from the ground up
• Close collaboration with a highly skilled, fast-moving team
• Direct impact on systems operating in live production environments
• A role where technical excellence, autonomy, and long-term thinking are highly valued