Senior Backend Software Engineer - Authentication & User Management

Join Canva as a Staff Backend Software Engineer on our User Platform team, where you will play a critical role in shaping the future of our product.In this position, you will be responsible for designing and implementing scalable backend systems that enhance user experiences. Collaborate with a talented team of engineers to build robust APIs and optimize performance across our platform.

Role overview As a Principal Software Engineer on the User Platform team at Canva in Sydney, this role takes the lead in designing and building user experiences that impact millions of people globally. The position shapes daily interactions with Canva’s platform, influencing how users engage and create. What you will do Lead the design and development of core user-facing features Drive technical decisions that affect large-scale user experiences Collaborate closely with other engineers and product teams to deliver impactful solutions Impact The work in this role directly affects how users experience Canva every day, helping to set the standard for usability and reliability at scale.

Join Canva as a Staff Software Engineer specializing in our API Platform. In this fully remote role across Australia and New Zealand, you will be at the forefront of designing and developing scalable API solutions that empower our users and enhance the overall Canva experience. Collaborate with cross-functional teams to build robust systems and contribute to the future of design technology.

Role overview Canva is hiring a Staff Backend Engineer - Experiments in Sydney. This senior role focuses on building and maintaining backend systems that support experimental features. The work directly shapes how new ideas are tested and delivered, influencing both product growth and the user experience.

SafetyCulture is a leading global technology firm dedicated to revolutionizing workplace environments worldwide. Founded by Luke Anear after witnessing the tragic consequences of workplace incidents, our mission is to empower frontline workers through innovative mobile solutions. Our cutting-edge workplace operations platform equips teams with the essential knowledge, tools, and confidence to uphold high standards, ensure safety, and foster continuous improvement. The RoleAs a Staff Backend Engineer, you will significantly influence how SafetyCulture manages identity, access control, and permissions on a large scale. Your expertise will ensure that our platform is trusted across some of the world's most complex organizations. You will be responsible for making architectural decisions that will impact all teams utilizing our platform, setting the benchmark for designing and delivering security-critical systems. Technology StackOur modern tech stack includes Swift, Kotlin, C++, React.js for front-end, and Golang, Node.js for back-end, along with AWS, Kafka, and Kubernetes for infrastructure.

About UsAt Heidi, we are revolutionizing the healthcare landscape with our cutting-edge AI Care Partner, designed to assist clinicians from documentation to the delivery of care.Our mission is to enhance healthcare capacity while preserving the human touch in care. In just 18 months, Heidi has reclaimed over 18 million hours for clinicians and has facilitated over 73 million patient visits. Currently, our platform supports more than two million patient visits per week across 116 countries and in over 110 languages.Founded by healthcare professionals, Heidi unites a diverse team of clinicians, engineers, designers, scientists, and mathematicians, all committed to enriching the human connection at the core of healthcare.With nearly $100 million in funding, we are expanding our reach across the USA, UK, Canada, and Europe, collaborating with leading health systems such as the NHS, Beth Israel Lahey Health, MaineGeneral, and Monash Health.We move swiftly in areas that matter and adhere to proven methodologies, paving the way for the next era of healthcare innovation. Are you ready to take on this challenge?Your RoleAs a Senior Software Engineer, you will play a critical role in developing backend features with a profound understanding of how technology aligns with user needs. You should have experience in a high-growth startup environment and a background in building SaaS products.Your expertise will help you navigate the challenges faced by engineers and prioritize essential features and capabilities based on design principles. You excel in connecting technical details with business requirements and transforming high-level designs into actionable solutions.You thrive in dynamic situations and appreciate the flexibility of a flat organizational structure. Your ability to navigate the complexities of developing AI healthcare products on an international scale is crucial.We believe that talent can emerge from unexpected sources; if you have a proven record of delivering technically challenging products and features, we want to hear from you.Key Responsibilities:Deliver high-quality, scalable code autonomously while considering code structure and design.Implement and refine data storage solutions.Collaborate effectively with team members to enhance product features.

About UsAt Heidi, we are pioneering an AI Care Partner that empowers clinicians throughout the entire patient care journey, from documentation to the delivery of care. Our mission is to enhance healthcare capacity while ensuring that care remains profoundly human-centered. In just 18 months, Heidi has reclaimed over 18 million hours for clinicians and facilitated more than 73 million patient visits. Presently, Heidi supports over two million patient visits weekly across 116 countries and in more than 110 languages.Founded by healthcare professionals, our team combines the expertise of clinicians, engineers, designers, scientists, and mathematicians, all united by a common goal: to reinforce the human connection that is fundamental to healthcare.With nearly $100 million in funding, we are expanding our reach across the USA, UK, Canada, and Europe, collaborating with major health systems such as the NHS, Beth Israel Lahey Health, MaineGeneral, and Monash Health, among others.At Heidi, we prioritize agility and effectiveness, leveraging proven methods to shape the future of healthcare. Are you ready to take on this exciting challenge?The TeamJoin the team that drives Heidi's growth. Your contributions will shape the architecture of our billing, payments, and entitlements platform, creating seamless access to essential products for our customers. As we expand into new markets and launch innovative products, every feature you develop will eliminate friction for customers and propel Heidi's revenue forward.The RoleWe are seeking a Senior Software Engineer to lead the development of backend features, possessing a robust technical acumen that translates user needs into effective solutions. Ideal candidates will have experience in a hyper-growth startup environment, particularly in building SaaS products.You will understand the key challenges faced by engineers and apply sound design principles to prioritize essential features and capabilities. Your unique ability to harmonize technical details with business requirements will enable you to transform high-level designs into practical solutions.Thriving in dynamic and flexible work environments, you will quickly navigate the complexities of developing an AI product for the healthcare sector on a global scale. We recognize that exceptional talent can emerge from diverse backgrounds; if you have a proven history of delivering technically challenging products and features, we would love to connect with you.

At Mathspace, we're dedicated to transforming mathematics education through our innovative and interactive learning software designed for both students and teachers.As a product-driven, agile organization, we prioritize delivering exceptional value based on continuous customer feedback. Our goal is to create an engaging and rewarding educational experience for students and educators alike.As a Senior Backend Software Engineer on our cross-functional product team, your responsibilities will include:Enhancing the Mathspace web and mobile applications, which support hundreds of thousands of students worldwide each month.Collaborating closely with product owners and designers during product discovery.Working alongside fellow engineers to provide meaningful solutions for students and teachers.Addressing challenging technical problems with creativity and a commitment to continuous learning.Taking initiative and playing an active role in project development.Expanding your knowledge by developing and enhancing our technology stack.

Role Overview Canva is hiring a Senior Staff Engineer to join the App Experiences team in Sydney. This senior position focuses on backend development, shaping the systems that support Canva's creative platform. The work centers on improving user engagement and streamlining operations across the app ecosystem. What You Will Do Lead backend engineering efforts for App Experiences, setting technical direction and standards. Design and refine backend systems to support new features and improve reliability. Collaborate with cross-functional teams to deliver solutions that fit Canva’s mission to empower creativity. Guide and mentor engineers, fostering technical growth and teamwork. What We Look For Extensive experience with backend development, ideally in large-scale or user-focused applications. Strong technical leadership and the ability to drive projects from concept to delivery. A track record of inspiring teams and building solutions that enhance both user experience and operational efficiency.

Join our dynamic team at Arista Networks as a Senior Software Engineer specializing in platforms. In this role, you will be instrumental in designing and developing robust software solutions that drive our platform's performance. If you are passionate about technology and eager to work with a talented team, we want to hear from you!

At Ripple, we are revolutionizing the way value is transferred globally, just as information is shared today. Our cutting-edge crypto solutions empower financial institutions, businesses, governments, and developers to enhance the global financial system, fostering greater economic equity and opportunities worldwide. Join a dynamic team that supports your professional growth while you help us innovate.We invite you to make a significant impact on your career and the world by joining us in building tangible value.In 2025, Ripple expanded its capabilities by acquiring GTreasury, marking a pivotal entry into the multi-trillion-dollar corporate finance sector.GTreasury boasts over 40 years of experience serving some of the largest and most sophisticated corporations. By integrating its treasury command center with Ripple’s technology stack, we enable companies to manage and optimize liquidity in real-time, seamlessly across both traditional and digital assets.Become part of our mission to redefine corporate treasury and create the underlying infrastructure for the Internet of Value.We are looking for an innovative and visionary Senior Software Engineer who is passionate about developing a premier platform alongside a world-class team. You will drive technical excellence in software development, from design and implementation to maintenance, making significant contributions to our goals.

About UsAt Heidi, we are revolutionizing healthcare with our innovative AI Care Partner, designed to assist clinicians throughout the entire care process, from documentation to actual care delivery.Our mission is to enhance healthcare capacity while ensuring that care remains deeply human-centered. In just 18 months, Heidi has successfully reclaimed over 18 million hours for healthcare professionals and facilitated more than 73 million patient visits. Currently, our technology supports over two million patient visits weekly across 116 countries and in more than 110 languages.Founded by a team of clinicians, Heidi unites a diverse group of engineers, designers, scientists, and creatives, all driven by a common goal: to reinforce the human connection at the core of healthcare.With nearly $100 million in funding, we are expanding our services into the USA, UK, Canada, and Europe, collaborating with major health systems such as the NHS, Beth Israel Lahey Health, MaineGeneral, and Monash Health.We pride ourselves on our agility and commitment to evidence-based practices as we shape the future of healthcare. Are you ready to take on this challenge?Position OverviewAs a Senior Software Engineer specializing in backend development, you will be pivotal in executing backend features with a comprehensive technical understanding that aligns with user requirements. Your experience in a rapidly growing startup and expertise in building Software as a Service (SaaS) products will be invaluable.You will possess a profound awareness of the challenges engineers encounter and a solid grasp of design principles necessary for prioritizing critical features and capabilities.Your unique ability to seamlessly bridge technical intricacies and business objectives allows you to transform high-level designs into practical, real-world solutions.You excel in dynamic environments, appreciating the flexibility of a flat organizational structure. Your quick understanding of the complexities involved in developing AI-driven healthcare products on an international scale sets you apart.We believe that exceptional talent can emerge from unexpected backgrounds; if you have a proven history of delivering technically challenging products and features, we want to hear from you.Your Responsibilities:Independently produce robust and elegant code, emphasizing code structure, design, and scalability.Implement...

Deputy is a global SaaS workforce management company based in Sydney, serving over 1.5 million workers and 375,000 workplaces in more than 100 countries. The platform supports frontline staff across industries such as hospitality and healthcare, with a mission to improve the work experience for hourly employees and help businesses keep their teams engaged. Role overview This Senior Backend Software Engineer position sits within the Pay Rates domain. The focus is on building advanced pay interpretation and compliance features, automating the logic needed for complex awards and agreements. The work aims to deliver smooth, reliable experiences for users while ensuring compliance and accuracy at scale. What you will do Develop and maintain backend APIs and services that support pay rates and compliance features. Work closely with product, design, and leadership teams to shape new features and improvements. Contribute to both user-facing experiences and the underlying systems that power them. Help automate complex business logic to support a wide range of workplaces and users. AI at Deputy Deputy is moving toward becoming an AI-native organization. Engineers are encouraged to use AI tools in daily work. Training and support are provided, with the goal of using AI responsibly and creatively to solve problems and deliver new solutions. Impact Work in this role directly impacts millions of users worldwide, from small businesses to large enterprises. Projects contribute to both the quality of the platform and the livelihoods of frontline workers globally.

Location : Sydney, AU, Hybrid (3 days in office required)About Us At Relevance AI, we are pioneering the future of the AI workforce. Our mission is clear: to empower teams to effortlessly delegate significant tasks to AI agents that operate, think, and collaborate like experts. With Relevance AI, anyone can create and manage intelligent agents designed to handle workflows, decisions, and collaboration—all within one cohesive platform. Our technology empowers industry leaders like Canva, Databricks, Confluent, Autodesk, Lightspeed, Rakuten, Aveva, Qualified, and Activision Blizzard, enabling them to enhance their operations, marketing, and sales efforts.Backed by prominent investors such as Bessemer Venture Partners, Insight Partners, Peak XV, and King River Capital, we successfully raised our Series B round in April 2025 to accelerate our growth and expand the possibilities of agentic automation.With our headquarters in both San Francisco and Sydney, we thrive in a hybrid work environment that fosters curiosity, collaboration, and execution. We are known for moving quickly, thinking big, and achieving together. In 2025, we proudly earned the title of LinkedIn’s #1 Startup in Australia.If you’re passionate about redefining the way the world interacts with AI, we invite you to join our team.The Role We are looking for a Staff Software Engineer to become a key member of our Builders team based in Sydney. This team is dedicated to enhancing the core builder experience on the Relevance AI platform, focusing on our agent builder, tool builder, and workforce builder functionalities. Your primary goal will be to improve the platform for our customers who are building agents and automation workflows.In this pivotal role, you will provide technical leadership and drive execution within the Builders team, collaborating closely with product, engineering, and go-to-market teams to deliver robust enterprise-grade capabilities and backend systems. This position offers high visibility and significant autonomy, allowing you to design complex systems and shape architecture across teams, with your contributions directly impacting customer outcomes.Every engineering team at Relevance AI is exploring different frontiers of the AI workforce, from enabling individual builders to scaling enterprise-grade AI systems utilized by thousands globally. This role is at the forefront of that mission, creating systems that make AI practical, reliable, and ready for production.At Relevance AI, your work will reach customers within hours, providing a unique opportunity to see the immediate impact of your innovations.

Join our dynamic team at Canva as a Senior Backend Engineer specializing in Java to help enhance our Product Platform. As a pivotal member of our engineering team, you will be responsible for developing scalable and efficient backend systems that support our innovative design tools. This is a fantastic opportunity for someone who thrives in a fast-paced, collaborative environment and is passionate about building high-quality software solutions.In this role, you will work closely with product managers, designers, and other engineers to create robust backend solutions that meet the needs of our users. Your expertise in Java will be essential as we continue to iterate and improve our platform.

About UsAt Heidi, we are pioneering an AI Care Partner designed to assist clinicians at every stage of the healthcare process, from documentation through to care delivery.Our mission is to double the capacity of healthcare while ensuring that care remains deeply personal. In just 18 months, Heidi has reclaimed over 18 million hours for clinicians and facilitated more than 73 million patient visits. Currently, we support over two million patient visits weekly across 116 countries and in more than 110 languages.Founded by healthcare professionals, Heidi unites a diverse team of clinicians, engineers, designers, scientists, creatives, and mathematicians, all dedicated to enhancing the human connection at the core of healthcare.With nearly $100 million in funding, we are expanding our reach in the USA, UK, Canada, and Europe, collaborating with leading health systems including the NHS, Beth Israel Lahey Health, MaineGeneral, and Monash Health.We are agile, innovative, and grounded in proven methodologies, ready to shape the next era of healthcare. Are you up for the challenge?Your RoleAs a Senior Software Engineer, you will be tasked with developing backend features that effectively meet user needs. Your experience in a high-growth startup environment and proficiency in building SaaS products will be essential.You should possess a deep understanding of the challenges engineers face and a solid grasp of design principles to prioritize essential features and functionalities.Your unique ability to connect technical details with business objectives will allow you to transform high-level designs into tangible solutions.You excel in challenging environments and thrive in a flexible, flat-structured workplace. Your ability to navigate the complexities of developing an AI healthcare product on an international scale will be invaluable.We believe that exceptional talent can emerge from various backgrounds; if you have a proven track record of delivering technically demanding products and features, we would love to hear from you.Your TeamYou will be part of a team focused on creating the collaboration layer that enables clinicians to work together seamlessly for improved patient care, spanning from small clinics to large hospital networks. Your contributions will enhance features such as direct sharing, role-based access, and detailed permissions using advanced technology inspired by Project Zanzibar. Every feature you develop will ensure patient data security while minimizing barriers that hinder clinical teams.

Location: Sydney, Australia (Hybrid, 3 days in office per week) Role overview The Staff Software Engineer on the Builders team at Relevance AI leads technical projects that shape the platform’s core builder experience. This team focuses on developing and refining features such as the agent builder, tool builder, and workforce builder. These features allow customers to create, manage, and automate AI-driven workflows within the platform. This position offers broad scope to design complex systems and influence architectural decisions. The role involves collaborating closely with product managers, other engineers, and go-to-market teams to deliver enterprise-level capabilities and maintain reliable back-end systems. The work here directly supports a wide range of customers, from individual builders to organizations scaling AI solutions worldwide. Engineers in this role see the impact of their contributions quickly, as updates reach customers within hours. The Builders team’s efforts help make AI accessible and production-ready for a growing user base. What you will do Provide technical leadership within the Builders team Design and implement features for agent, tool, and workforce builders Collaborate with product, engineering, and go-to-market teams Drive execution of projects that deliver enterprise-grade reliability Influence architectural decisions across teams and systems Work environment This is a hybrid role based in Sydney, requiring three days per week in the office. Relevance AI values curiosity, teamwork, and decisive action. The company supports a collaborative environment where engineers can see the results of their work quickly and contribute to making AI more dependable for customers.

Join our dynamic team at Cuscal Limited as a Senior Platform Engineer. In this pivotal role, you will leverage your expertise in platform engineering to drive the development and optimization of our cutting-edge payment solutions. You will collaborate with cross-functional teams to design scalable architectures and enhance system performance.As a Senior Platform Engineer, you will be responsible for implementing best practices in software development, ensuring high availability and security of our platforms. You will also mentor junior engineers and contribute to our culture of innovation and excellence.

About UsAt Heidi, we are pioneering an AI Care Partner designed to assist clinicians throughout their workflow, from documentation to the delivery of patient care.Our mission is to enhance healthcare capacity while ensuring that care remains profoundly human-centered. In just 18 months, our innovative solutions have reclaimed over 18 million hours for clinicians and facilitated more than 73 million patient visits. Currently, Heidi is instrumental in over two million patient interactions weekly across 116 countries and in more than 110 languages.Founded by healthcare professionals, our team comprises clinicians, engineers, designers, scientists, and mathematicians, all united by a common goal: to reinforce the human connection at the heart of healthcare.With nearly $100 million in funding, Heidi is on an expansion trajectory across the USA, UK, Canada, and Europe, collaborating with leading health systems such as the NHS, Beth Israel Lahey Health, MaineGeneral, and Monash Health.We prioritize agility in critical areas while remaining committed to proven methodologies, all in an effort to shape the future of healthcare. Are you ready to take on this challenge?Join Our TeamBecome part of a team dedicated to creating the world’s finest AI Scribe, allowing clinicians to concentrate on patient care rather than paperwork. You will engage in tasks such as audio transcription, automated note generation, and clinical workflow automation, assisting doctors, nurses, and healthcare professionals from diverse backgrounds. We pride ourselves on being a close-knit team that improves every situation we encounter, tackling complex technical challenges related to ambient workflows while delivering features that save clinicians hours each day.Your RoleIn collaboration with our Engineering Manager for Transcription and Note Generation, you will serve as a Senior Software Engineer, leading the development of AI-driven solutions that transform clinical dialogues into structured medical documentation, allowing clinicians to dedicate more time to patient care and less to administrative duties.You thrive in challenging environments and embrace the dynamics of a flexible, flat-structured workplace. Your expertise in navigating the intricacies of developing AI solutions for the global healthcare landscape will be invaluable.Key Responsibilities:Design and implement robust, scalable systems for real-time processing and analysis of clinical conversations.Collaborate with our AI/ML team to enhance and optimize medical speech transcription and documentation processes.