Principal Software Engineer

Principal Software Engineer – FASTer Way to Fat Loss

Position

Purpose:

As part of the Technology organization, the Engineering function is responsible for delivering and maintaining FASTer Way's digital platforms, ecommerce infrastructure, and integrated client experiences. The Principal Engineer (Ecommerce) will play a critical role in the design, implementation, and optimization of FASTer Way's Ecommerce ecosystem while contributing to broader software engineering initiatives across the organization. This role focuses on Shopify and Recharge development, with contributions to general backend and frontend development, API integrations, payment processing, and an understanding of multiple backend systems involved in ecommerce.

• Provide technical leadership across various application types, architectures, and software-development methodologies, offering strategic direction and design leadership on complex engineering challenges.
• Partner closely with business and product teams to define and deliver new ecommerce products and services that meet market needs and drive business growth.
• Design and implement commerce solutions built on a custom Shopify theme, ensuring seamless integration between backend services and frontend experiences.
• Lead enterprise-wide initiatives, owning engineering decisions and execution to drive resolution on strategic technical challenges.
• Own backend processing for critical payment systems, ensuring security, reliability, and compliance with industry standards.
• Oversee IT service management strategies to improve operational efficiency and user satisfaction of software systems, driving resolution of technical challenges with a service-centric approach.
• Drive engineering productivity by maintaining high standards for code quality, engineering processes, and technology policy compliance.
• Oversee the creation and management of robust, fault-tolerant integrations with internal systems and external third-party services (e.g., payment gateways, affiliate management platforms, ecommerce APIs).
• Guide the development and improvement of the company’s platform software systems, including APIs and administrative web applications.
• Stay at the forefront of security, compliance, and regulatory requirements, proactively identifying and mitigating vulnerabilities.
• Partner with data and analytics stakeholders to ensure accurate reporting and actionable insights.
• Serve as a subject matter expert on Shopify, Recharge, and ecommerce integrations for the engineering team.
• Communicate effectively with senior executives, business stakeholders, and users, translating complex technical information into actionable insights.
• Monitor industry trends and emerging technologies, identifying opportunities for innovation and improvement within the engineering function.
• Champion the company’s mission and values, cultivating an accountable, innovative, and results-driven culture that fosters teamwork, trust, and respect.

• Bachelor’s degree in Computer Science, Software Engineering, or related field (or equivalent work experience).
• 8+ years of professional software engineering experience, with at least 2+ years focused on Shopify or another market-leading commerce toolset.
• Proven experience supporting ecommerce and subscription platforms at scale.
• Familiarity with PCI compliance, GDPR, and related data privacy considerations is a plus.
• Proven experience designing and leading end-to-end ecommerce solutions, preferably on Shopify or another industry-leading commerce platform.
• Experience with payment processing, cart optimization, and checkout customization.
• Deep understanding of subscription lifecycle management, including onboarding, renewals, and churn prevention strategies.
• Full-stack proficiency in system design principles, frontend/backend, integrations, security, and analytics.
• Experience designing and consuming REST and Graph
  
  QL APIs.
• Knowledge of serverless architectures and cloud-native engineering practices (AWS preferred).
• Familiarity with CI/CD pipelines, observability, and automated testing frameworks.
• Demonstrated ability to influence engineering practices across teams.
• Self-driven,…