Principal E-Commerce Engineer

Role Description

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 are well designed and implemented, and operated reliably over time to support near-term commercial growth and long-term platform needs.

Key Responsibilities

• Architect, build, operate, maintain, and evolve our eCommerce stack centered on Shopify and related systems.
• Lead the design, implementation, and ongoing operation of integrations, services, and workflows that support the full commerce lifecycle.
• Establish and guide eCommerce engineering best practices across system design, observability, reliability, performance, maintainability, and security.
• Provide hands-on technical leadership to other team members, contractors, and partners.
• Drive architectural decisions and cross-functional technical alignment across various systems.
• Help ensure security, compliance, and best practices are maintained across commerce systems and payment workflows.
• Own and help evolve the technical implementation and ongoing operation of attribution, analytics instrumentation, conversion tracking, and related data flows.
• Partner with DTC marketing and related stakeholders to ensure reliable implementation of landing pages and campaign tracking.
• Monitor and improve the observability, reliability, and performance of commerce, payment, attribution, and analytics workflows.
• Identify technical risks, scalability bottlenecks, platform gaps, and analytics or attribution reliability issues early.

Qualifications

• 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.
• 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.

Preferred Qualifications

• Experience with Shopify Plus.
• Experience in high-growth direct-to-consumer or consumer health ecommerce environments.
• Experience with subscription commerce and recurring billing models.
• Experience with managing and simplifying diverse multi-vendor API integrations.
• Experience with headless commerce architectures.
• Experience with multi-store, multi-brand, or international ecommerce implementations.
• Experience designing event-driven or asynchronous workflows for ecommerce operations.
• Experience working in regulated, high-trust, or operationally complex environments.
• Experience mentoring senior engineers and influencing engineering standards.

Work Environment

This is a senior individual contributor role for someone expected to operate with high autonomy, strong judgment, and high technical ownership. The ideal candidate is comfortable moving between architecture, implementation, debugging, and cross-functional decision-making in a fast-moving environment.

Salary Range

Estimated at approximately $180,000 to $240,000 depending on experience.

Benefits

• 100% premium coverage for employee's Health, Dental, and Vision Insurance. 50% premium coverage for dependents.
• 401k platform.
• Equity in company.
• WFH Stipend.

Additional Information

This is not a standard ecommerce implementation role. We are looking for someone who can think at the systems level, make strong architectural decisions, and build a durable foundation for long-term commerce growth.

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.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment.