Senior Full Stack Engineer - eCommerce

About the role

A client in Sydney is looking for an experienced Senior Software Engineer to lead the design, development and continuous improvement of its customer-facing digital ecosystem. The work covers full-stack development across modern web, mobile and backend services, on high-impact eCommerce platforms, digital checkout flows and secure integrations. The role is permanent and based on-site at the company's Sydney headquarters.

Key responsibilities

• Build and maintain modern frontend web and mobile applications (React, Next.js) and secure, scalable backend services and APIs (Node.js, Express)
• Build, optimise and support end-to-end customer purchasing journeys, checkout flows and integrations with secure payment gateways and regulatory controls
• Define application architecture patterns, reusable component libraries, design systems and type-safe API contracts across codebases
• Optimise database queries, monitor end-to-end performance and proactively resolve technical debt
• Support CI/CD pipelines, automated testing, release tooling and cloud hosting/edge configurations across Azure and Cloudflare
• Provide technical guidance and mentorship, take part in code reviews, guide external vendor deliverables and act as escalation point for complex technical issues

Required profile

• Minimum 7+ years of commercial software engineering experience with strong full-stack capability
• Demonstrated experience delivering eCommerce platforms or digital payment workflows in secure customer data environments
• Experience guiding requirements across cross-functional teams (IT, Marketing, Operations) and external partners

Required skills

• TypeScript, JavaScript, HTML/CSS, React, Next.js and accessible, mobile-first interfaces aligned with WCAG
• Node.js, Express, RESTful APIs, GraphQL, SQL data modelling and query optimisation
• Azure application services, CI/CD automation, build tooling and edge/caching platforms such as Cloudflare