Principal E-Commerce Engineer

About the role

This is a hands-on principal-level role with direct ownership of the architecture, implementation, operation, scalability, reliability, security, and long-term evolution of our customer-facing eCommerce systems, storefront infrastructure, payment workflows, attribution and analytics instrumentation, and related integrations. As part of the software team behind the Happy Health product, you will collaborate with both technical and non-technical leaders across multiple disciplines to ensure that the purchasing, subscription, fulfillment, and post-purchase experiences around Happy Health are seamless, reliable, and built to scale. You will help ensure that the integrated systems underlying the end-to-end commerce experience (including Shopify, Stripe, CRM via Customer.io, 3PL, funnel analytics via Mixpanel, and marketing attribution) are not only well designed and implemented, but also operated reliably over time to support near-term commercial growth and long-term platform needs. This role also provides technical leadership across eCommerce architecture, payment and checkout strategy, attribution and analytics infrastructure, engineering standards, and platform decision-making. Happy Health is an equal opportunity employer. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Requirements

• 8+ years of software engineering experience, with meaningful depth in ecommerce systems
• Significant hands-on experience with Shopify, including custom storefront development, APIs, app integrations, and platform limitations
• Strong experience with Stripe and production-grade payment processing systems
• Deep understanding of ecommerce architecture, including checkout flows, order lifecycle, refunds, subscriptions, discounts, taxes, and transaction edge cases
• Experience implementing, maintaining, and operating analytics instrumentation, attribution systems, event tracking, or related marketing technology integrations in production eCommerce environments
• Strong experience designing and operating reliable, scalable production systems
• Experience with modern web application architecture and performance optimization for conversion-sensitive customer experiences
• Experience integrating ecommerce platforms with third-party systems such as ERP, OMS, WMS, CRM, analytics, support, or marketing systems
• Demonstrated ability to lead major technical decisions across systems, services, and teams
• Strong communication skills and ability to work cross-functionally with both technical and non-technical stakeholders
• Proven ability to operate autonomously and set technical direction while remaining hands-on

Additional Information

About Happy Health Happy Health is revolutionizing sleep medicine delivery through our comprehensive telehealth platform. We've eliminated the traditional barriers to sleep care - no more waiting months for appointments or spending uncomfortable nights in sleep labs. Our patients receive FDA-cleared home sleep testing via Happy Ring, connect with board-certified sleep specialists, and when required, begin evidence-based treatment within just 5 days. Ongoing physiological data monitoring with the Happy Ring enables real-time condition management, combination therapies, and drives measurable outcomes. Happy Ring represents the future of sleep diagnostics: an FDA-cleared medical device integrating advanced biometric sensors with AI-powered analysis to deliver highly accurate diagnostics and longitudinal management at home. For sleep medicine physicians, this means you'll have access to high-quality diagnostic data that empowers you to make confident clinical decisions for your patients, and integrate multimodal treatments that focus on root-cause solutions.

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