Senior React Native Developer (Sydney)

About Trideca

Trideca is Australia's trusted strategy, AI, and digital transformation partner, helping some of the nation's largest enterprises (including NAB, Suncorp, Optus, Medibank, and AGL) drive meaningful business impact through technology.

With offices in Melbourne and Sydney and projects spanning multiple industries, we thrive on solving complex challenges, delivering cutting-edge solutions, and pushing the boundaries of what's possible.

About the role

Trideca is looking for a Senior Software Engineer – Mobile to work with one of our client who is a leading Australian health services organisation, joining a Connected Health technology squad and reporting directly to the squad's Engineering Lead. The team builds customer-centric digital experiences with a mobile-first mindset, primarily in React Native.

Your core focus is mobile, but the squad owns its work end to end, so you will also contribute across web and backend systems alongside Product Managers, Designers and Engineers. If you ship iteratively, take a test-and-learn approach, and care as much about performance and maintainability as you do about getting the feature out, this role gives you room to do all three.

What You'll Be Doing

• Build mobile-first features in React Native, and contribute to web and backend systems where the work requires it.
• Design technical solutions across the mobile, web and backend layers, and work with other teams to pressure-test requirements and surface issues before implementation rather than after.
• Own quality end to end — testing, troubleshooting, code review, and testing strategies spanning unit, integration and end-to-end coverage.
• Identify, prioritise and advocate for technical debt reduction, and lead the refactoring that improves maintainability and system architecture.
• Drive performance optimisation and scalability, and establish quality metrics, logging, monitoring and alerting so system health is observable rather than assumed.
• Coordinate technical decisions and integration points with other engineering teams, and contribute to engineering chapter meetings and wider technical discussion.
• Partner with infrastructure and DevOps on deployment and operational excellence, and with security on secure coding practices and vulnerability management.

What You Bring

• Strong React Native mobile application development experience, with a track record of shipping high-quality apps.
• Proficiency in JavaScript and TypeScript.
• Experience building and consuming RESTful APIs.
• A strong grasp of mobile UX, performance and cross-platform considerations.
• Experience with React on the web, or a comparable frontend framework.
• Experience working in agile teams using Scrum or Kanban.
• Good understanding of test-driven development, continuous integration and continuous delivery.
• Proficiency with Git, CI/CD pipelines and modern development workflows.

Nice to Have

• Backend development in Node.js and TypeScript.
• Understanding of API design, authentication and integration patterns.
• Exposure to SQL and NoSQL databases.
• Testing frameworks across unit, integration and UI/end-to-end.
• Familiarity with debugging and monitoring tools such as Crashlytics.
• Exposure to cloud platforms and DevOps practices.
• Understanding of accessibility and design systems.

Why Choose Trideca?

Empowering Women in Technology: We are committed to closing the gender gap in technology. With our dedicated road map for women, you'll find tailored opportunities to advance your career, supported by mentorship, leadership programs, Women in Technology Chapter and inclusive policies like menstruation leave and flexible working options.

Growth Through Learning: Your growth is our priority. At Trideca, you'll have access to a wide range of learning and development initiatives, from certifications and workshops to personal development programs, ensuring you are always at the forefront of technology and innovation.

Work Your Way: Our flexible work policy supports you to balance your personal and professional life.

Trideca Values

Clients Come First

We obsess over our clients; they mean everything to us and are central to everything we do. We take the time to understand them, so we can deliver outstanding experiences and create moments of WOW.

Achieve Greatness Together

Business is a team sport, and we are here to win. We respect, value, and inspire each other to bring our best to raise the bar. We will high-five you when you've nailed it and have honest discussions when you don't.

We Celebrate Our Differences

We are stronger and more successful when we include and appreciate different backgrounds, ideas, and experiences. Diversity helps us be more creative, solve problems better, and achieve more. By valuing everyone's unique contributions, we create a cohesive workplace where everyone can thrive and grow.

Own Your Space

We own our space, relationships, and client outcomes. We are fully committed and accountable to ourselves and each other; we deliver what we commit to. We adopt a commercial outlook and expect everyone to think and make decisions like we are the CEO.

Debate, Agree, Commit

We champion open dialogue where every voice matters and ideas are rigorously challenged to create stronger solutions. Once we reach alignment, we commit fully as one team and execute with excellence and accountability.

Have Fun, Go Nuts

No explanation is required, have fun, go nuts.

We also believe that the unique contributions of everyone at Trideca is the driver of our success. To ensure that our products and culture continue to embrace everyone's perspectives and experiences, we never discriminate based on race, religion, national origin, gender identity or expression, sexual orientation, age, marital status, veteran status, or disability. We are passionate about creating a workplace that fosters active participation and provides an equal playing field, where merit and accomplishment are the sole criteria for success. We encourage candidates from all backgrounds to apply. We celebrate the diversity of our workforce and are dedicated to creating an environment where everyone feels welcome, valued, and included.