[Remote] Principal Platform Engineer

Note: The job is a remote job and is open to candidates in USA. Stitch Fix is redefining retail through human creativity, advanced data science, and Generative AI. The Principal Platform Engineer will lead end-to-end platform initiatives, build scalable shared infrastructure and developer tooling, and integrate AI-driven workflows to improve engineering productivity, system reliability, and business velocity.

Responsibilities

• Own the end-to-end technical delivery of platform initiatives from discovery and design through implementation, rollout, and operational readiness
• Design and build scalable, observable, and maintainable shared platform capabilities, APIs, gateways, and backend services to streamline developer experience and system performance
• Evaluate and prototype emerging technologies, including AI agents and automated workflows, turning promising approaches into safe, reusable platform tools
• Lead technical design reviews and mentor engineers across the organization through code reviews, pairing, and actionable feedback to raise the bar for technical excellence
• Eliminate manual and operationally expensive work by delivering self-service tooling, automation, and continuous improvement across production systems
• Leverage modern AI workflows (e.g., GitHub Copilot, ChatGPT, agentic coding tools) to accelerate software delivery, optimize code quality, and automate routine technical tasks
• Build and operate systems within our core technical landscape, spanning Ruby/Rails, Python, Rust, React/TypeScript, GraphQL, and cloud infrastructure
• Evolve core platforms so AI agents and automated systems can safely discover capabilities, execute actions, monitor outputs, and recover from failures independently
• Adapt quickly to emerging platforms, continuously integrating new tools and methodologies into production environments to maximize engineering efficiency

Skills

• Education: Bachelor's degree in Computer Science, Software Engineering, or equivalent practical experience
• Relevant Experience: Demonstrated track record (typically 5+ years) designing, building, and operating complex production systems in platform, infrastructure, backend, or developer tooling environments
• Technical Expertise: Deep experience with distributed architectures, microservices, APIs, and cloud infrastructure, along with proficiency in languages such as Ruby/Rails, Python, or Rust
• AI Tooling Capabilities: Hands-on experience using and implementing modern AI-assisted engineering workflows (e.g., AI agents, LLM integrations, Copilot) to optimize developer processes
• Leadership & Collaboration: Strong problem-solving abilities with proven experience leading complex technical projects end-to-end, communicating tradeoffs clearly, and influencing cross-functional teams without direct authority
• Physical Requirements: This position may require the ability to sit for extended periods of time, use a computer or other office equipment, and communicate effectively (verbal and written)
• Experience working with GraphQL technologies, API gateways, and modern web frameworks like React and TypeScript
• Exposure to e-commerce, personalization, or large-scale retail engineering ecosystems
• Proven track record of developing self-service platform tools that safely expose underlying infrastructure to AI agents
• Active contributions to open-source software, industry whitepapers, or technical communities focused on developer tooling and platform engineering

Benefits

• This position is eligible for an annual bonus
• New hire and ongoing grants of restricted stock units, depending on employee and company performance
• Medical, dental, vision, and other benefits

Company Overview

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