Senior Full Stack Engineer (Mobile & Web)

About the Role

We are looking for a highly skilled Full Stack Engineer (5+ years’ experience) to help build, scale, and maintain our platform across web, mobile, backend, and infrastructure layers. This is a hands-on, technical role for someone who enjoys solving complex problems, working across a modern TypeScript-based stack, and influencing architecture and engineering best practices.You will own features end-to-end, collaborate closely with product and design, and play a key role in shaping the technical direction of the platform.About TPF MberXMberX is a sports and rewards platform built for AFL and NRL fans around Australia. There are three key pillars to the app, which include footy tipping, sports media and analytics, and rewards.Being a footy fan is a bonus.Key Responsibilities

• Design, develop, and maintain features across web and mobile using Next.js and Expo (React Native)
• Develop scalable backend services using Node.js and TypeScript.
• Design and build GraphQL APIs for use across web and mobile clients.
• Work with SQL and NoSQL databases to design schemas, write efficient queries, and ensure data integrity.
• Integrate and maintain payment systems, including Square, Stripe, and PayPal.
• Write and maintain automated tests using Vitest/Jest to ensure code quality and reliability.
• Participate in Agile ceremonies (stand-ups, sprint planning, retrospectives) and contribute to sprint delivery.
• Build MVPs and iterate quickly based on user and stakeholder feedback.
• Apply accessibility best practices across web and mobile interfaces.
• Ensure code quality through reviews, testing, documentation, and best practices.
• Troubleshoot complex technical issues across the stack and provide scalable solutions.
• Collaborate with product managers, designers, and QA to deliver high-quality features.Required Skills and Experience
• 5+ years of experience in software engineering.
• Strong hands-on experience with Node.js and TypeScript
• Advanced experience with Next.js for web applications and Expo (React Native) for mobile app development.
• Experience designing and consuming GraphQL APIs.
• Strong experience working with both SQL and NoSQL databases.
• Experience integrating payment systems such as Square, Stripe, or PayPal.
• Experience writing automated tests with Vitest or Jest.
• Experience working within Agile teams and ceremonies (stand-ups, sprint planning, retrospectives).
• Experience building MVPs and shipping quickly in a fast-paced environment.
• Excellent problem-solving, communication, and collaboration skills.
• Excellent business English communication.Nice to Have
• Understanding of accessibility controls and best practices.
• Familiarity with the Hero UI component library.
• Experience with Claude Code or other AI-assisted development tooling.
• Experience with 3D engines or game development.What You’ll Get
• Real ownership & influence – You won't just implement tickets. You'll shape architecture, define best practices, build MVPs from the ground up, and influence the direction of our product and tech stack from day one.
• A true TypeScript-first, modern stack – Work end-to-end across Next.js, Expo (React Native), GraphQL, Node.js, SQL/NoSQL databases, and modern payment integrations (Square, Stripe, PayPal). No legacy tech, no patchwork.
• Autonomy with trust – We hire senior people and give them the freedom to execute. You'll have the space to make decisions, ship MVPs quickly, and lead initiatives that matter.
• Strong growth trajectory – Opportunity to evolve into Staff, Principal, Tech Lead or Architecture roles as we scale.
• Fast-moving, no-politics environment – Lightweight Agile ceremonies, less meetings, more building. More action, less red tape.