Principal Full Stack Engineer - Loyalty

Nomni is the all-in-one platform built for hospitality operators - bringing POS, payments, ordering, loyalty, procurement, marketing, and data together in one system, with AI at its core.

We exist because hospo tech has been built around what's good for the people providing it, not the people using it. We're changing that. Built by operators, for operators - with 35,000 venues already on the platform across Australia and Southeast Asia.

One platform. One team. One company accountable for the outcomes that matter.

About The Role

As a Principal Full Stack Engineer for Nomni’s Loyalty Platform, you will play a central role in building and scaling the core systems that power Nomni’s rewards, incentives, and customer engagement experiences across web and mobile. You’ll work across the stack (React/Next.js, React Native, Node.js, Nest.js, PostgreSQL, GCP) to deliver high-performance UIs, resilient backend services, and seamless integrations that support millions of users and thousands of venues.

This role is hands-on, impact-driven, and focused on delivering product features quickly and reliably — improving performance, reducing tech debt, and accelerating the rollout of new loyalty capabilities across the Nomni ecosystem.

What You'll Do

• Build responsive, high-performance user interfaces using React (Next.js) for web and React Native for mobile
• Develop and maintain scalable backend microservices using Go, Node.js, Nest.js, and Express.js
• Design, optimize, and maintain GraphQL APIs with Apollo, ensuring efficient and reliable data flows
• Implement and manage robust data models using PostgreSQL, with Redis for caching, rate limiting, and performance improvements
• Deploy, monitor, and scale systems using GCP, ensuring platform reliability and security
• Collaborate closely with product managers, designers, and engineers to refine product strategy and ship features that support user growth and engagement
• Refactor and modernize legacy systems, reducing tech debt and improving maintainability across the loyalty platform
• Participate in architectural design discussions, code reviews, and technical decision-making
• Uphold strong engineering best practices in code quality, testing, observability, and continuous integration
• Apply full-stack expertise across frontend, backend, APIs, and cloud infrastructure to build stable, scalable, consumer-grade experiences.

• 10+ years of experience in full-stack engineering roles
• Expertise with React (Next.js) and React Native for frontend development
• Advanced backend development experience with Go, Node.js, Nest.js, and Express.js
• Strong understanding of GraphQL, Apollo, and modern API architecture
• Proven experience with PostgreSQL and Redis in production environments
• Hands-on experience deploying and scaling applications in GCP
• Experience working in product-led or SaaS environments
• Ability to mentor junior developers and contribute to a learning-focused engineering culture
• Strong collaboration and communication skills, with experience working cross-functionally

• Experience with loyalty, payments, or high-scale consumer platforms
• Exposure to microservices, distributed systems, or event-driven architecture
• Familiarity with real-time data patterns or customer engagement systems
• Experience working in high-growth or startup environments
• Strong documentation habits and technical communication