Principal Software Development Engineer

Responsibilities

• Help set the product vision for the AI Model Serving platform in partnership with the engineering manager.
• Lead the team technically by making critical design decisions that drive performance, reliability, and scalability across the platform.
• Design, implement, and maintain large-scale systems that enable moving ML models to production.
• Write design documents to build consensus for new system components and enhancements to existing components.
• Evaluate and uptake new technologies made available within Workday and across the broader industry.
• Troubleshoot, improve, and scale continuous integration software pipelines.
• Develop relationships with software engineers, machine learning engineers, and data scientists on partner teams.
• Respond to alerts and debug production issues to maintain platform health and reliability.
• Review pull requests and enforce consistency, performance, readability, and security across code bases.
• Develop documentation to share knowledge with other engineers.

Requirements

• 8+ years of related work experience in software development, with a focus on building and operating large-scale distributed systems.
• Bachelor's degree in Computer Science, Engineering, or a related technical field (or equivalent practical experience).
• Deep experience designing, building, and scaling production-grade distributed systems.
• Understand the full software development lifecycle — from coding standards and testing to code reviews, source control management, and deployment.
• Bring a product-oriented perspective to platform engineering.
• Deep proficiency in Python, with extensive experience writing production-level code and building systems in Python-based frameworks.
• Familiarity with both large language models and traditional machine learning models.
• Experience with Ray and Ray Serve for distributed model serving at scale.
• Experience with Prometheus for monitoring and observability of distributed systems.
• Excellent written and verbal communication skills.
• Collaborative approach to engineering, with experience mentoring other engineers and fostering an inclusive team environment.

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