Senior Front-End Software Engineer Commerce Platform

Senior Front‑End Software Engineer – Commerce Platform

Location: Toronto, ON (Remote available — must be based in Canada). Contract Length: 12 months. Pay: $50.00 - $65.00/HR CAD. Team: Commerce Experience (Payments, Loyalty, Coupons). Application Process: Apply via the platform where you see this posting. If you encounter technical difficulties, send a Word version of your resume to [email protected].

About The Job

As a Senior Front‑End Software Engineer, you will focus on building exceptional web experiences within our clients' Commerce Platform. You’ll work closely with product designers and cross‑functional engineers to create interfaces that are accessible, performant, and deliver a frictionless checkout and payment experience. You will set the bar for front‑end engineering excellence—driving high‑quality UI design, reusable component architecture, client‑side performance, accessibility standards, and intuitive user interaction patterns. While the role involves collaborating with full‑stack and backend teams, your primary responsibility will be creating delightful, reliable, and scalable front‑end solutions. You’ll influence the full product lifecycle—from problem exploration to delivering polished, production‑ready front‑end features. You’ll also champion best practices, maintain consistency across our UI ecosystem, and contribute to broader engineering initiatives that elevate our platform.

Minimum Qualifications

• 6+ years of professional front‑end or full‑stack development experience, with a strong emphasis on UI engineering.
• Expertise in modern web technologies such as HTML, CSS, JavaScript, and frameworks like React.js (or comparable modern front‑end frameworks).
• Strong understanding of UX principles, usability patterns, user flows, and interaction design.
• Hands‑on experience with front‑end testing tools such as Jest, Mocha, or Enzyme.
• Familiarity with server‑driven front‑end development and experience integrating with back‑end frameworks such as Ruby on Rails.
• Experience with GraphQL APIs and building robust client‑side integrations.
• Understanding of relational data concepts (e.g., Postgres, Snowflake) as they relate to UI development and data flows.
• Knowledge of client‑side caching, state management patterns, and asynchronous data handling.
• Experience building or integrating monitoring tools for front‑end performance and error tracking (e.g., Sentry, DataDog, CloudWatch, OpsGenie).
• A proactive, adaptable mindset with the ability to propose and implement enhancements to improve the user experience.

Preferred Qualifications

• Experience building front‑end features for payment flows, checkout systems, or other high‑complexity eCommerce UI surfaces.
• Familiarity with payment systems, digital wallets, and payment service provider workflows as they relate to user experience.
• Understanding of eCommerce order management and the front‑end components that support order lifecycle visibility.
• Experience designing or implementing invoicing, billing, or financial UI flows.
• Comfort working with experimentation frameworks and data‑driven user experience optimizations (A/B tests, feature flags, etc.).
• Experience ensuring cross‑browser compatibility, accessibility (WCAG), and building reusable UI components or front‑end libraries.

Benefits

Apex Systems offers a comprehensive benefits package, including on‑demand training, certification preparation, a library of technical and leadership courses, and discounts to associations such as CompTIA and IIBA. The company values innovation, collaboration, and continuous learning.

Equal Opportunity Employer

Apex Systems is an equal opportunity employer. We do not discriminate on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. For accommodations with the website, contact our Benefits Department at [email protected] or 804‑523‑8228.