Principal Software Engineer

Champion is an early-stage startup focused on fostering individual and professional growth through innovative partnerships. They are seeking a Principal Software Engineer to architect scalable systems, drive technical strategy, and mentor engineers while shaping the technical vision and culture of the organization.

Responsibilities:

• Architect and lead the design of scalable, high-performance systems across our full stack using TypeScript, Node.js, Python, and React
• Drive technical strategy — evaluate tradeoffs, establish patterns, and make foundational decisions that will shape the platform for years to come
• Own complex, ambiguous problems end-to-end, from discovery through delivery, with minimal direction
• Design and build data infrastructure — data pipelines, warehousing solutions, and the data models that power product analytics and customer insights
• Develop and integrate ML-powered features where applicable, including model evaluation, feature engineering, and productionizing models at scale (strong plus)
• Mentor and grow engineers at all levels through code reviews, design discussions, and technical guidance
• Partner cross-functionally with Product and Design to refine roadmap items into well-scoped, high-impact work
• Leverage AI-powered developer tooling (e.g., Claude Code, GitHub Copilot) to accelerate delivery, improve code quality, and set a standard for how the team integrates these tools into everyday workflows
• Champion (pun intended) extensible, secure, and observable software patterns across the organization