Senior Back-End Developer

Transmax is an Intelligent Transport System (ITS) solutions provider and creator of the award-winning STREAMS® platform, which supports traffic management centres across Australia to optimise the movement of millions of commuters and freight every day.We're driven not just by technology, but by making roads safer, transport systems smarter, and outcomes more sustainable for communities.As part of our transformation journey, Transmax is building the next generation of STREAMS, a modern, cloud-based ITS platform designed to help road agencies deliver safe, inclusive, and sustainable transport networks. Over the coming years, we're reimagining and expanding our capabilities to create a more connected, intelligent, and efficient transport future.About The RoleWe're seeking a Senior Back-End Developer (Level 3) to join our core platform team on a 12-month maximum term opportunity. These teams create intelligent transport system capabilities that enable the control of physical devices using other products, algorithms, and actions, and build shared platform components for a seamless user experience across the Next Gen product suite.RequirementsWhat you'll doReporting to the Engineering Lead, you will champion innovation and continuous improvement.Collaborate with your product trio (Product Manager, Product Designer, and Engineering Lead) to balance usability, feasibility, and viability within product roadmaps Work in partnership with your scrum team to collectively build and deliver reliable, scalable, and secure applications that support millions of users and critical infrastructure nationwideChampion process and performance improvement through automation, optimisation, and reusability across the development lifecycle, while mentoring peers through code reviews and continuous learningWhat You'll BringWe're looking for a technically capable, enthusiastic professional developer with a team-first philosophy, a keen problem-solving mindset, strong communication skills, and an interest in process improvement and reusability.Tertiary qualification in Software Engineering, Computer Science, or a related field5+ years of experience in software development roles with responsibility for application design, coding, testing, maintenance, and supporting other team members through peer code review, collaboration, and mentoringProficient in developing microservices, components, and APIs using languages, frameworks, and technologies including C# and .NET to deliver stateful, containerised workloadsCompetent in using public cloud infrastructure and contemporary architectures, services, and technologies including AWS, Docker, Kubernetes, Elasticsearch, RabbitMQ, distributed application frameworks such as Microsoft Orleans, and monitoring/alerting technologies like Prometheus and GrafanaExperienced using relational (e.g., PostgreSQL), non-relational (e.g., Elasticsearch), and in-memory (e.g., Redis) database technologies, and conversant in associated APIs, query syntax, and query performance optimisationExperience using GitLab, Artifactory, Jira, and Confluence for version control and collaborationExperience using Scrum principles and practices to incrementally deliver products as part of a cross-functional empowered team, with the ability to explain the benefits of empowered teams over alternative product team modelsDesirable extrasFamiliar with contemporary automated testing techniques, frameworks, and technologies such as BDD, Playwright, Selenium, and SpecFlowMotivated to document and communicate knowledge, findings, and actions to inform repeatable practices, automating them wherever possibleBenefitsWhy join us?At Transmax, we offer more than a role, we offer a career with impact.A balance of competitive salary and advantageous benefitsA high-trust, empowering culture where you have the autonomy to deliverHybrid work modelContinuous learning opportunities to keep your skills sharp and future readyPrivate health discounts to support your overall wellbeingA supportive environment that values your success and is grounded in a strong commitment to diversity, inclusion, and sustainability. Access to our Employee Assistance Program for personal and professional wellbeingReady to apply?Your next career chapter is waiting for you at Transmax.If you're interested, please apply by submitting your CV and a brief cover letter outlining your experience and suitability for the role. We'd love to hear from you!If there are any adjustments that need to be made to ensure you have a fair and equitable experience in our recruitment process, please advise us when scheduling your interview.Successful applicants will be subject to a National Criminal History Check and a Qualification check. Applicants must hold full working rights within Australia. We are unable to offer any visa sponsorship for this opportunity.We do not accept unsolicited agency resumes and are not responsible for any fees related to unsolicited resumes.