# Senior Software Engineer, X-Scientist at Xaira

- Company: Xaira
- What the company does: We’re pioneering the discovery and development of life-changing medicines through the transformative power of artificial intelligence. Backed by Lightspeed, NEA and Sequoia.
- Company website: https://xaira.com/
- Type: Startups
- Level: Senior
- Location: South San Francisco, California, United States
- Work setup: On-site
- Pay: $205K to $275K base salary per year (USD)
- Posted: 2026-06-11
- Apply by: 2026-10-08
- Apply: https://job-boards.greenhouse.io/xairatherapeutics/jobs/5161853007
- Page: https://www.1752.vc/careers/jobs/xaira-senior-software-engineer-x-scientist/

## About the role

Xaira is pioneering an AI-native approach to discovering and developing the next generation of life-changing medicines. We are building predictive and agentic AI systems across drug discovery, and the X-Scientist team accelerates this mission by making AI-assisted science reliable, usable, and scalable across drug discovery workflows.

## What they're looking for

- Strong Python engineering fundamentals, with clean, typed, tested, maintainable code
- Experience building at least one of the following: a production library, CLI, API, SDK, backend service, workflow system, or developer platform
- Familiarity with LLM application development, agent frameworks, tool calling, MCP-style interfaces, or orchestration systems
- Comfort working with complex systems that combine multiple components, external calls, domain-specific logic, and evolving user needs
- Good instincts for abstraction, error handling, reliability, and designing software that can grow across use cases
- Strong communication skills and ability to work in a collaborative, multidisciplinary environment

Tags: Computational Protein Design