Lead Software Engineer in Test, Machine Learning Systems

About Modular

About the role:

What you will do:

• Design and develop Modular’s Quality Strategy, defining principles, priorities, and metrics that enable continuous improvement.
• Implement and develop an end-to-end full stack quality system with cross-team collaboration.
• Integrate with teams to collaborate in developing testing strategies.
• Proactively identify systemic risks to quality and coordinate initiatives to address them.
• Monitor, analyze, and improve the effectiveness of Modular’s quality-related processes (e.g., test nondeterminism, CI/CD performance, release readiness).
• Provide technical guidance and thought leadership in quality for Modular ML products.

What you bring to the table:

• Experience ensuring quality in machine learning and numerical computing systems, including hands-on familiarity with modern ML frameworks such as PyTorch, TensorFlow, JAX, or similar ecosystems, and an understanding of the unique challenges in validating model correctness, performance, and reproducibility.
• Proven experience defining and implementing quality systems at scale across complex software and ML development lifecycles.
• Proven experience defining and implementing quality systems at scale.
• Devotion to quality and engineering excellence, with a track record of driving measurable improvements in product quality.
• Strong collaboration skills and ability to influence cross-functional teams, including product, engineering, and leadership stakeholders.
• Experience identifying and managing quality strategies across large software systems.
• Expertise with software delivery workflows and related tooling (e.g., build/test frameworks, static analysis, dependency management).
• Strong written and verbal communication skills, including the ability to articulate complex technical ideas and influence organizational change.
• Strongly identifies with our core company cultural values.

What Modular brings to the table:

• Amazing Team. We are a progressive and agile team with some of the industry’s best engineering and product leaders.
• World-class Benefits. In order to attract the best, we need to offer the best. Premier insurance plans, up to 5% 401k matching, flexible paid time off, and more are available to you! Please note that specific benefit packages may vary based on your location.
• Competitive Compensation. We offer very strong compensation packages, including stock options. We want people to be focused on their best work and believe in tailoring compensation plans to meet the needs of our workforce. 
• Team Building Events. We organize regular team onsites and local meetups in Los Altos, CA as well as different cities. Traveling 2-4 times a year is expected for all roles.