Senior Backend Software Engineer

Join Deputy, a leading global SaaS workforce management company, headquartered in Sydney, and recognized as a Unicorn with over 1.5 million workers and 375,000 workplaces utilizing our innovative platform across 100+ countries. Our mission focuses on enhancing the work experience for hourly workers—those essential team members in various sectors, from hospit…

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.

Join The Trade Desk as a Senior Software Engineer, where you will play a crucial role in developing cutting-edge technology that powers the advertising ecosystem. Collaborate with a talented team to design, build, and maintain high-performance software solutions that drive the success of our clients.

Join Our Team at LorikeetAt Lorikeet, we are pioneering the future of customer support through our advanced AI technology tailored for intricate industries such as fintech, healthtech, marketplaces, and delivery services.Our mission is to revolutionize support systems by automating responses using transparent and customizable AI, enabling support teams to focus on managing automation and addressing complex cases rather than being bogged down by high volumes of simple inquiries. This shift allows teams to elevate their services to provide personalized concierge experiences for their customers.We harness the expertise of our founders, including Jamie, a former member of Google’s generative AI team, and Steve, who has a rich history building operational solutions at Stripe. Our talented team hails from industry leaders like Stripe, Canva, Atlassian, Dropbox, and Dovetail.As we expand rapidly with a solid customer base, real revenue, a promising roadmap, and a robust sales pipeline, we have successfully raised over USD 50 million from prominent venture capitalists and angel investors, including QED, Blackbird, Square Peg, and many more.Our esteemed global clientele includes:Australia's largest telehealth provider,The leading bank for teens in the United States,One of the most significant NFT marketplaces by trading volume,A leading player in the Web3 gaming sector.... along with other enterprise clients handling over one million support tickets annually.Why This Role is Unique?A culture led by technical expertise and engineering. At Lorikeet, coding is a core responsibility for all team members. Every engineer takes ownership of their projects, tackling complex challenges, and developing effective solutions.An inclusive, mature, and flexible workplace culture. We foster a low ego, high trust environment, where collaboration is key and 'talented jerks' are not tolerated. Our Surry Hills office provides a supportive space, and we understand the importance of work-life balance, especially for team members with young families.

Location: Sydney, Australia (Hybrid schedule: 3 days per week in the office) Relevance AI develops technology that empowers teams to assign complex and high-impact tasks to AI agents with expert-level capabilities. The platform enables users to create and manage intelligent agents, streamlining workflows, supporting decision-making, and improving collaboration within a single system. Clients include organizations such as Canva, Databricks, Confluent, Autodesk, Lightspeed, Rakuten, Aveva, Qualified, and Activision Blizzard. These partnerships span a variety of industries, helping teams optimize their operations. Backed by investors like Bessemer Venture Partners, Insight Partners, Peak XV, and King River Capital, Relevance AI completed Series B funding in April 2025. With offices in San Francisco and Sydney, the company values curiosity, collaboration, and practical execution. In 2025, LinkedIn recognized Relevance AI as Australia’s #1 Startup. Role overview The Builders team seeks a Senior Back-End Software Engineer based in Sydney. This group advances the builder experience, agent builder, tool builder, and workforce builder features, making the platform more effective for a broad customer base. Engineering teams work on different aspects of the AI workforce, from supporting individual creators to scaling systems for enterprise use worldwide. The focus of this role is to build systems that ensure AI is reliable, effective, and ready for production. What you will do Enhance and maintain the builder experience on the Relevance AI platform Collaborate with engineers to deliver features to users quickly Lead key technical initiatives and mentor team members Reduce unnecessary processes and help drive efficient delivery Contribute to a modern, evolving technology stack centered on speed and efficiency Our culture Relevance AI values rapid innovation, open collaboration, and shared achievement. Engineers have the autonomy to lead, experiment, and see the direct results of their work. The environment encourages curiosity and a commitment to excellence.

Join d-Matrix, where we are dedicated to harnessing the transformative power of generative AI to revolutionize technology. We are pioneers in both software and hardware innovation, constantly pushing the limits of what is achievable. Our culture is rooted in respect and collaboration.We embrace humility and prioritize direct communication. Our inclusive team thrives on diverse viewpoints, leading to enhanced solutions. We are on the lookout for passionate individuals eager to confront challenges and committed to execution. Are you ready to explore your playground? Together, we can unlock the infinite possibilities of AI.Location:This is a hybrid position, requiring onsite work at our Sydney, Australia office three days a week.About the Role: Senior Runtime Software EngineerYour Responsibilities:At d-Matrix, we are developing an AI inference processor aimed at accelerating inference for NLP, vision, and recommendation workloads within a data center environment. Our architecture incorporates an in-memory compute processor subsystem, utilizing both fixed and floating-point data types in dense and sparse matrix processing modes. During our seed round, we successfully developed a CMOS test chip and validated our architecture using genuine inference workloads compiled from PyTorch.As a Senior Runtime Software Engineer, you will play a vital role in the architecture, development, and validation of firmware/software that operates on the system-on-chip’s multiple processors, low-level drivers, and system programs. You will take charge of optimizing runtime performance for the silicon product, documenting and developing firmware that runs across various on-chip multi-core CPU subsystems.Your efforts will maximize hardware utilization while minimizing communication bottlenecks and enhancing on-chip memory usage. You will be responsible for bringing the software up on FPGA platforms that replicate the embedded CPU subsystems, debugging through JTAG-connected IDEs, and developing firmware solutions ahead of the AI subsystem hardware availability.Additionally, you will manage the delivery timeline and ensure compliance with d-Matrix coding and methodology guidelines while collaborating closely with hardware teams to interpret specifications and propose enhancements.

Location: Sydney, Australia (hybrid, three days per week in the office) Relevance AI develops tools for teams to delegate meaningful work to AI agents that think, act, and collaborate like seasoned professionals. The platform allows organizations to create and manage intelligent agents for workflow automation, decision-making, and collaboration. Clients include Canva, Databricks, Confluent, Autodesk, Lightspeed, Rakuten, Aveva, Qualified, and Activision Blizzard, who use these solutions to improve operations, marketing, and sales. The company is backed by Bessemer Venture Partners, Insight Partners, Peak XV, and King River Capital. In April 2025, Relevance AI completed its Series B funding round to accelerate growth and expand agentic automation. With headquarters in San Francisco and Sydney, the team works in a hybrid model that emphasizes curiosity, teamwork, and strong execution. LinkedIn named Relevance AI Australia’s #1 Startup in 2025. Role overview The Senior Software Engineer (Chat) will join the Chat team in Sydney. This group builds the conversational interface for Relevance AI’s platform, enabling users to interact with pre-built AI agents, productivity tools, and research workflows. The Chat product relies on a scalable back-end to support real-time, agent-driven conversations. Engineering teams at Relevance AI address a range of challenges, from supporting individual creators to building systems for enterprise clients. This role helps shape systems that make AI accessible, reliable, and production-ready. What you will do Develop and enhance the back-end for Chat, enabling real-time, agentic interactions Work with a modern technology stack, refined for speed and rapid iteration Lead major projects and provide mentorship to teammates See your contributions reach customers quickly, often within hours Work in an environment that values independence and minimizes unnecessary process Work environment Relevance AI provides a supportive, fast-moving setting focused on innovation and collective achievement. Engineers are encouraged to take initiative and can see the direct results of their work.

Join Canva as a Senior Software Engineer specializing in networking! In this pivotal role, you will contribute to the design, development, and maintenance of cutting-edge networking solutions that enhance connectivity and performance for our users worldwide. This is an exciting opportunity to work in a dynamic environment that fosters innovation and collaboration.

Join Canva as a Senior Software Engineer specializing in Developer Experience! We are looking for an innovative and passionate engineer who thrives in a collaborative environment. You will play a key role in enhancing the tools and processes that empower our developers to create amazing products.In this remote role, you'll have the opportunity to work alongside talented individuals across Australia and New Zealand, contributing to a culture of creativity and innovation.

Our Mission at Speechify Speechify’s goal is to make reading accessible for everyone. Our text-to-speech technology helps over 50 million people convert reading materials, including PDFs, books, Google Docs, news stories, and websites, into audio. This allows users to listen, learn, and retain information more efficiently. Our Products and Recognition The Speechify platform spans multiple devices and platforms: iOS, Android, Mac, Chrome, and web. Our Chrome extension earned Google’s Chrome Extension of the Year, and Apple recognized us with the 2025 Design Award for Inclusivity. Our Team Speechify operates as a fully remote team of nearly 200 people. Our group includes engineers and AI researchers with experience at Amazon, Microsoft, and Google, as well as alumni from Stanford and other leading universities. Collaboration and innovation are at the core of our culture.

Location : Sydney, AU, Hybrid (3 days in office required)About Us At Relevance AI, we are on a mission to revolutionize the AI workforce. Our goal is to empower every team to leverage AI agents that think, act, and collaborate like seasoned experts.Our platform enables users to create and manage intelligent agents that optimize workflows, make decisions, and enhance collaboration—all within a single, cohesive framework. Trusted by industry leaders such as Canva, Databricks, Confluent, Autodesk, Lightspeed, Rakuten, Aveva, Qualified, and Activision Blizzard, our technology helps organizations scale excellence in operations, marketing, and sales.Backed by top investors including Bessemer Venture Partners, Insight Partners, Peak XV, and King River Capital, we successfully raised our Series B funding in April 2025 to propel our growth and innovate in the field of agentic automation.With headquarters in San Francisco and Sydney, we foster a hybrid working model that thrives on curiosity, collaboration, and execution. Our pace is swift, our ambitions are grand, and our wins are shared.In 2025, we were honored to be recognized as LinkedIn's #1 Startup in Australia.If you aspire to shape the future of AI, we invite you to join our team.The Role Billing for AI products presents a unique technical challenge. High-volume event metering, token-based usage tracking, distributed workflows, and multi-dimensional pricing are not standard billing issues, and there is no ready-made solution.We are seeking a back-end focused software engineer who is ready to take ownership of our core billing and payments systems. In this role, you will design, implement, and ensure the reliability and evolution of our systems, enabling accurate usage metering, timely invoicing, and scalable revenue collection.This is a greenfield opportunity in a high-ownership, rapidly evolving AI company where you will manage real systems with significant stakes, coupled with the freedom to redesign the foundations as we expand.You will engage with backend systems, integrate with Stripe and Orb, and develop internal data pipelines to guarantee that billing data is accurate, auditable, and resilient. This is your chance to architect new billing infrastructure that grows alongside company expansion while accommodating complex AI product usage models.Your Impact Design and maintain reliable billing infrastructure, ensuring accurate invoicing and revenue collection.

About UsAt Heidi Health, we believe that the healthcare industry deserves a better rhythm—one that nurtures continuous, empathetic care. Our mission is to develop an AI Care Partner that collaborates seamlessly with healthcare professionals, enhancing their ability to provide compassionate patient care.Our diverse team comprises medical practitioners, engineers, designers, researchers, and creative minds dedicated to creating innovative tools that allow clinicians to focus on what truly matters: their patients.In a short span of just 18 months, Heidi has successfully reclaimed over 18 million hours for healthcare professionals, facilitating 73 million patient visits across 116 countries. Currently, Heidi supports more than two million patient visits weekly on a global scale.With nearly $100 million in funding, we are expanding our reach in the US, UK, Canada, and Europe, partnering with top health systems such as NHS, Beth Israel Lahey Health, and Monash Health.Your RoleAs a Senior Software Engineer specializing in Desktop Applications, you will be instrumental in shaping Heidi's cross-platform desktop solutions. Your focus will be on designing robust architectures and developing dependable systems that operate seamlessly across various operating systems.You are passionate about software quality, performance, and user experience, dedicated to creating intuitive, high-quality desktop applications that clinicians can rely on. You excel in working across the stack, from Rust-based system components to web interfaces, and you take pride in resolving complex challenges from design through to delivery and long-term maintenance.Your expertise lies in transforming intricate product and platform requirements into elegant, reliable desktop software. You connect low-level systems engineering with outstanding user experiences, thriving in a culture where autonomy, ownership, and impact take precedence over hierarchy.You enjoy engaging closely with the problem space, including audio, performance, AI workflows, and cross-platform constraints. You are thrilled by the opportunity to build an AI-powered healthcare solution that functions flawlessly across various operating systems and geographical locations.Your Responsibilities:Lead the development of Heidi’s cross-platform desktop applications utilizing Tauri, Rust, and Next.js, delivering production-grade software for macOS and Windows (Linux experience is a plus).Oversee the complete desktop experience, from system architecture and native integrations to frontend implementation, performance optimization, and sustainable maintenance.Design and implement high-performance Rust components that drive real-time audio capture, transcription pipelines, local state management, and secure system interactions.

The Hextech Gameplay team at Riot Games is at the forefront of developing innovative engine technologies and tools that empower the creation of immersive gameplay experiences within League of Legends. Join our dynamic team and help shape the future of gaming in League of Legends!As a Senior Software Engineer specializing in tooling and engine systems, you will play a crucial role in enhancing high-quality workflows for our league engineers and designers. You will advance tooling workflows that enable creators to bring their visions to life on a larger scale and provide expert-level support for these technologies. This position reports to the Engineering Manager of the Hextech Gameplay team in Sydney.This is a full-time position based in Sydney, Australia.

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.

Location: Sydney, Australia (Hybrid schedule: three days per week in office) Relevance AI develops technology that powers the next generation of AI-driven work. The platform enables teams to assign complex tasks to intelligent agents, allowing for streamlined workflows, decision-making, and collaboration. Major organizations such as Canva, Databricks, Confluent, Autodesk, and Activision Blizzard use Relevance AI to enhance operations, marketing, and sales at scale. Backed by leading investors and recognized as Australia’s #1 Startup by LinkedIn in 2025, the company is headquartered in San Francisco and Sydney and values curiosity, collaboration, and decisive action. Role overview The Enterprise team seeks a Senior Software Engineer specializing in back-end systems to join the Sydney office. This group builds and scales core platform features for the company’s largest and most complex clients. The work centers on designing systems that are secure, reliable, compliant, and scalable for enterprise requirements. Areas of focus include identity and access management, auditability, and compliance. This role suits engineers who enjoy tackling challenging technical problems, architecting strong back-end infrastructure, and managing projects from planning through delivery in close partnership with product and customer teams. The position plays a key part in building production-ready, trustworthy AI systems used by a wide range of clients. What you will do Develop and maintain back-end systems supporting enterprise clients Design solutions for security, reliability, compliance, and scalability Work on identity and access management, auditability, and related features Lead and deliver projects with autonomy and minimal oversight Mentor team members and collaborate closely with product and customer teams See the impact of your work reach clients quickly Work environment This position follows a hybrid work model in Sydney, with three days per week in the office. Engineers at Relevance AI take on significant responsibility and see their contributions reach production rapidly.

Why Choose SafetyCulture?At SafetyCulture, we are not your typical tech company. Yes, we offer catered lunches, engaging team events, stylish merchandise, and even a pet-friendly office. However, the true reason our employees join us goes beyond these perks.Our diverse team of nearly a thousand dedicated individuals is driven by a shared mission: to enhance our product and improve the lives of our customers. Here, you will hear more often, 'Let's try it!' than 'That's not how we do it.' We are on a quest to develop tools that empower the 3 billion essential workers worldwide—ranging from factory operators to delivery personnel. Our innovation matches that of major tech companies, yet we maintain an agile approach that avoids bureaucratic red tape. You will collaborate with smart, experienced professionals committed to solving real-world challenges efficiently.While our scale is impressive, the ownership you will experience is personal. Every full-time employee receives equity, ensuring that our growth translates to individual success. We acknowledge our imperfections, but as we embark on the next chapter of our journey, our focus is on intelligent scaling driven by operational maturity and a strong emphasis on AI.If the prospect of making a significant impact in tech excites you rather than intimidates you, you will be a perfect fit for our team.What Does a Senior Software Engineer Do at SafetyCulture?As a Senior Software Engineer, you will play a vital role in addressing the challenges of an increasingly distributed workforce. You will be instrumental in fostering engineering excellence, nurturing emerging talent, and building an inclusive, high-performing interdisciplinary team.In this position, you will have the autonomy to make complex architectural decisions and drive meaningful change. You will be responsible for delivering practical solutions that have an immediate, positive impact on our customers' operations.As we scale, you will encounter exciting technical challenges and become an integral part of our engineering team. High-performing teams are entrusted with their services, and you will be empowered to build and maintain a system that currently serves hundreds of thousands of users and is poised to scale to millions. We encourage engineers to acquire new skills and leverage technology to tackle customer challenges, with opportunities in IoT, machine learning, and event-driven architecture.This role is part of our Best Fit job match program, allowing you to be considered for multiple software engineering positions across our teams. We are committed to setting you up for success by assessing your skills and aligning you with the team that best fits your capabilities.

At Neara, we are pioneering the future of energy resilience by leveraging advanced machine learning to create engineering-grade, physics-enabled digital twins of electricity grids across four continents. Our innovative approach allows asset owners to anticipate challenges and develop practical solutions for vast infrastructures spanning millions of kilometers.Imagine stress-testing an entire power grid against a hurricane before the storm even approaches. This is the impact of our work, as we empower major utilities to identify risks, optimize investments, and enhance the reliability of the global energy landscape.Our dynamic team comprises brilliant minds dedicated to making a real-world impact through AI and machine learning, from data classification to complex scenario analyses. At Neara, we foster an environment where creativity and innovation flourish, inviting smart and imaginative individuals to join us in scaling our positive influence worldwide.About the RoleWe are looking for a Senior Software Engineer to join one of our engineering groups, focusing on:Digitisation: Generate digital twins from diverse data sources using machine learning and algorithms, while developing tools to swiftly address data extraction issues.Platform: Create APIs to maximize data utility on the Neara platform, collaborating with clients and teams to define necessary abstractions.Design: Analyze the feasibility of digital twins or prospective designs, including load assessments on infrastructure and resilience evaluations against extreme weather.What You Will DoIn the Digitisation team, you will:Develop and assess improvements in algorithms and machine learning for digital twin extraction.Enhance monitoring systems to detect inefficiencies in digital twin extraction processes, such as distribution drift and misconfigurations.Create tools for rapid resolution of challenges arising from automated solutions.

Join Canva as a Senior Software Engineer specializing in Product and Features, where you will play a pivotal role in enhancing our platform. Collaborate with a dynamic team dedicated to delivering innovative solutions and improving user experience. Your expertise in Java will be essential in developing high-quality software that meets our users' needs.

Join Squiz's innovative product team as we develop a cutting-edge cloud-based Digital Experience Platform (DXP) that encompasses essential features like Content Management, Optimization Tools, AI Conversations, and Platform Services.We are looking for a talented Senior Fullstack Software Engineer to become a vital part of our Product Engineering team, focusing on enhancing our flagship Content Management System, Matrix. The ideal candidate will possess extensive experience in crafting and managing enterprise-level software solutions, with a strong emphasis on PHP and AWS technologies, alongside proficiency in a variety of other tech stacks across all application layers.This position offers flexibility, allowing candidates based on the east coast of Australia to work in a hybrid environment, ensuring you can balance your work and personal life.

Create impactful systems. Tackle intricate challenges. Collaborate with passionate individuals who care about code and each other! At Objective, we develop software that makes a significant impact in the world.With a diverse team of over 400 professionals across Australia, New Zealand, the United States, and the United Kingdom, we specialize in building cloud-first SaaS platforms that enhance the operations of governments and regulated industries — ensuring security, reliability, and scalability.Our solutions manage complex workflows, handle sensitive information, and operate in high-trust environments, where quality, security, and performance are paramount.Your Role:We are on the lookout for a Senior Software Engineer to join our talented team in Sydney.This position is not about cranking out features; you will engage with real customer challenges, developing systems that yield meaningful outcomes through thoughtful engineering, robust design, and strategic foresight.As a member of a collaborative and high-performing team, you will make contributions across the software stack while also influencing technical decisions, architecture, and engineering practices.This position reports to the Development Manager and does not entail people management responsibilities.