Principal Software Engineer

Work with Adiona; Clearwater (FL); Hybrid; USD 120,000 - 160,000; Full time

Job summary

Work with Adiona is seeking a Principal Engineer (Ecommerce) to lead the design and implementation of ecommerce solutions built on Shopify. This management role includes overseeing payment systems and driving strategic technical challenges, ensuring high-performance systems that meet market demands.

The ideal candidate will have over 8 years in software engineering, strong leadership skills, and a proven track record in ecommerce environments. Experience with payment processing and the subscription lifecycle is essential.

Qualifications

• 8+ years of software engineering experience, with 2+ years focused on Shopify.
• Experience with payment processing and subscription lifecycle management.
• Proficiency in REST and GraphQL APIs.

Responsibilities

• Design and implement ecommerce solutions on Shopify.
• Lead technical initiatives and contribute to product development.
• Monitor and improve security and compliance for payment systems.

Skills

Ecommerce expertise

Shopify and Recharge proficiency

API integrations

Fullstack development

Leadership abilities

Education

Bachelor's degree in Computer Science or related field

Tools

Shopify Plus

JavaScript

Node.js

PostgreSQL

GitHub Actions

Job description

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 individual will leverage deep technical expertise in ecommerce, subscriptions management, client engagement and retail environments. The ideal candidate must have a proven track record of building scalable, secure, and high-performing systems that support digital commerce initiatives. They will be responsible for the analysis, design, development, and delivery of software solutions, implementing and defining requirements for new applications and customizations, and adhering to best practices, standards, and security guidelines.

While this role has a strong focus on Shopify and Recharge development, it also requires contributing to general backend and frontend development, API integrations, payment processing and a solid understanding of multiple backend systems involved in ecommerce.

Work Activities

• 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, taking ownership of engineering decisions and execution to drive resolution on strategic key technical challenges.
• Own backend processing for critical payment systems, ensuring security, reliability, and compliance with industry standards.
• Oversee the development of IT service management strategies to improve the operational efficiency and user satisfaction of software systems, driving resolution of technical challenges with a service-centric approach.
• Drive engineering productivity by ensuring 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 mgmt 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, ensuring proactive identification and mitigation of 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.

Tools Used

• Ecommerce Platforms: Shopify Plus, Recharge, additional middlewares and marketplace apps
• Programming & Frameworks: JavaScript, TypeScript, Node.js, React, Liquid, Go, .Net
• Backend & Integrations: REST/GraphQL APIs, serverless functions (AWS Lambda), PostgreSQL
• CI/CD & DevOps: GitHub Actions, AWS, Docker, Terraform, CloudWatch
• Analytics & Optimization: Google Analytics (GA4), Shopify Analytics, BigQuery, Looker
• Collaboration: Slack, Jira, Google Workspace, Confluence

Job Context

Where work is conducted: Remote, On‑site as needed.

Level of responsibility: Management.

Number of direct reports: 3–7.

Typical stress level associated with position: Moderate to high.

Job Competencies

• 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.
• Fullstack proficiency – system design principles, frontend/backend, integrations, security, analytics.
• Experience designing and consuming REST and GraphQL 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, proactive, and comfortable operating in a fast‑paced, rapidly growing environment.
• Familiarity with AI‑driven personalization, LLM‑based tools, and recommendation engines.
• Excellent communicator; able to partner effectively with engineers, product managers, designers, and marketers.
• Successful track record in managing development organizations with thought‑leadership, cross‑functional influence, and partnership.

Education and Experience

• 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.