Senior Lead Engineer

Summary

Join Stitch Fix's Fulfillment Platform group as a Senior Lead Engineer and help shape the technical direction of systems orchestrating warehouse and transportation networks. Focus on application enhancements to boost floor efficiency, accuracy, and system reliability while mentoring engineers. Directly influence client satisfaction, inventory management, and margin growth. Responsibilities include influencing the evolution of the multi-carrier shipping platform, designing fault-tolerant services, ensuring warehouse operations visibility, mentoring engineers, instrumenting and tuning services, and translating business goals into technical roadmaps. The ideal candidate possesses 5-8 years of software engineering experience, expertise in large-scale systems, experience with logistics integrations, a proven track record of leading engineering projects, and fluency in modern programming languages. This role offers a chance to build strong cross-functional relationships, solve complex problems, and make a significant impact on the business.

Requirements

• You have 5-8 years of software engineering experience
• You have proven experience designing large-scale, event-driven or distributed systems (ideally in fulfillment, logistics or e-commerce)
• You have experience implementing and managing integrations with a wide range of external logistics and technology partners that power warehouse and transportation operations
• You have a track record of leading engineers through ambiguous, cross-functional projects and delivering production software that moves key business metrics
• You have fluency in at least one modern programming language (we primarily use Ruby, Go, and Python, but value great engineers over great syntax)
• You have proven experience with relational databases (e.g., Postgres, MySQL) plus a knack for picking up new technologies fast
• You have built production services on a major cloud platform - AWS, GCP, Azure or similar, and are highly skilled with modern observability stacks like Datadog
• You have practical knowledge of optimization, forecasting, or decision-science techniques—and the humility to partner with specialists when needed
• You have a bias for automated testing, continuous delivery, and observability as non-negotiable facets of quality
• You have strong communication skills—able to translate between technical details and business outcomes for stakeholders at every level

Responsibilities

• Influence the evolution of our multi-carrier shipping platform—rate shopping, label generation, tracking ingestion, and returns workflows
• Design fault-tolerant services that reconcile hundreds of thousands of carrier events per day and surface real-time shipment status to downstream systems
• Ensure comprehensive visibility into warehouse operations and precise ingestion of new merchandise
• Mentor engineers through code reviews, design sessions, and thoughtful feedback, fostering a culture of high standards and continuous learning
• Instrument, monitor, and tune our services for reliability, latency, and cost
• Translate business goals (cost, delivery promise) into technical roadmaps that balance short-term wins with long-term scalability
• Build tight relationships between enthusiastic partners in varied disciplines of industrial, software, and operations research engineering, owning end-to-end hardware to cloud solutions
• Solution at high speed with a small, agile team of coworkers to produce outsized impact on the business
• Showcase your ability to solution in a system with high-uptime requirements
• Have the autonomy to identify and roadmap unaddressed problems in the business and their impact, as well as offer new, improved solutions to existing challenges
• Take a leading role in prioritizing and sequencing high-impact work to drive the best value for our clients and stakeholders
• Apply your understanding of systems design, engineering for resiliency, and thinking in tradeoffs across a multidisciplinary team of hardware, application, and machine learning engineers
• Be exposed to a wide-open field of opportunity for impact with plenty of challenges to make your own

Benefits

• This role will receive a competitive salary, benefits, and equity
• The salary for US-based employees hired into this role will be aligned with the range below, which includes our three geographic areas
• A variety of factors are considered when determining someone’s compensation–including a candidate’s professional background, experience, location, and performance
• This position is eligible for new hire and ongoing grants of restricted stock units depending on employee and company performance
• In addition, the position is eligible for medical, dental, vision, and other benefits