Senior Java Developer

As a Senior Java Developer reporting to Director – Software Engineering, you'll take end-to-end ownership of meaningful technical challenges — from understanding requirements to shipping production-ready solutions. You'll work across backend systems, security, and cross-platform development, contributing to both new builds and the evolution of existing products. You'll thrive here if you're self-directed, curious, and energized by solving complex problems that have real impact on a global scale. Key Responsibilities Design, develop, test, and deploy software solutions that meet or exceed product and client requirements Build and maintain security-focused applications of increasing scope and complexity Extend and improve existing systems — adding functionality, enhancing performance, and adapting to new environments Ensure cross-platform compatibility across all deliverables Monitor system improvements post-deployment and iterate based on performance outcomes Contribute to architecture, database design, and technical direction as needed Required Qualifications Bachelor's degree in Computer Science, Engineering, or a related field — or equivalent practical experience At least 6 years strong, hands-on Java development skills with a solid understanding of software design principles, data structures, and algorithms Experience working with relational and/or NoSQL databases — including design, analysis, and querying Proven experience with continuous integration and deployment practices Demonstrated ability to write secure, testable, and maintainable code Experience with cross-platform or multi-environment development Preferred Qualifications Familiarity with cloud platforms such as AWS, GCP, or Azure Experience with data warehousing or large-scale data systems Background or interest in application security best practices This position will be located in Sydney, Australia and offers the opportunity for a hybrid work environment at least 2 days a week in-office (may increase to 3 days in the future). This is a permanent, full-time role so candidates should have full working rights in Australia. To be eligible to apply, you must have Australian citizenship or permanent residency status. Benefits & Rewards We offer private health insurance, employee stock purchase plan, equity grant, annual bonus, counseling sessions through Lyra, a global mentoring program, subscription to e-learning platforms, fitness, wellness and more. For more information, visit Nasdaq Benefits & Rewards Career Page. Come as You Are Nasdaq is an equal opportunity employer. We welcome applications from candidates of all backgrounds and identities. We are committed to fostering an inclusive workplace where diverse perspectives, experiences, and identities are valued and celebrated. We ensure that individuals with disabilities are provided with reasonable accommodation throughout the hiring process. At Nasdaq, we’re proud to be the engine behind the world’s capital markets. But we don’t stop there. We build the technology that drives transparency, trust, and access—helping economies grow and people thrive. Our purpose is to advance economic progress for all. Whether you’re a client, a colleague, or part of our broader community, we’re here to move markets—and possibilities—forward. Join our Talent Community to stay in the loop on upcoming roles, events, and new opportunities across Nasdaq. Our hybrid work model, NasdaqBlend, gives you flexibility to do your best work—whether that’s from home, in the office, or a mix of both. Check the job listing or reach out to our team for role-specific details. We’re a global team of over 8,500 innovators across 38 countries, united by a shared purpose: advancing economic progress for all. It’s not just what we do—it’s how we do it, together. Want a deeper look into our culture? Explore our Culture Book. We support your success through You&Q, our total rewards program that covers every dimension of life—from building wealth and growing your career to prioritizing well-being and family care. Join the Team Advancing Economic Progress for All.