Senior Software Engineer at Freelancer | Sydney, Australia

Join our dynamic engineering team at Freelancer, where we are actively seeking skilled Senior Software Engineers to elevate our innovative environment.We offer an unparalleled opportunity for high achievers looking to break away from the mundane corporate grind. If you possess exceptional talent and seek to collaborate with some of the brightest minds in the…

Join Arista Networks as a Senior Software Engineer in our EOS (Extensible Operating System) team in Sydney. In this role, you will be at the forefront of developing innovative software solutions that drive our advanced networking products. You will collaborate with cross-functional teams to design, build, and enhance features that are pivotal to our technology stack.

Join Canva as a Senior Software Engineer specializing in Lightspeed Renderer, where you'll play a pivotal role in advancing our cutting-edge design platform. In this dynamic position, you will collaborate with a talented team of engineers and designers to enhance our rendering engine, ensuring high performance and exceptional user experiences.

About Speechify Speechify is changing how people access information. Our tools let users listen to articles, documents, and books wherever they are, at work, on the go, or at home. By focusing on accessibility and engagement, we aim to make learning easier for everyone. We lead our category and continue to see rapid growth, much like how streaming services changed audio entertainment. Role Overview: Senior Software Engineer - Core Experiences The Core Experiences Team builds and maintains the core services and SDKs that power Speechify’s product across multiple platforms. This senior engineering role suits someone who enjoys working at the intersection of product and infrastructure, thinks strategically, and values building clear APIs and efficient systems that elevate user engagement. What You Will Do Work closely with Speechify’s Product Teams to define project scopes, identify ways to speed up customer feedback, and manage integration and UX trade-offs across teams. Deliver solutions through our cross-platform SDK. Improve existing features for faster load times and smarter parsing by designing better abstractions and refining algorithms. Build cloud functions, lightweight backend services, and background jobs using Kotlin. Location This position is based in Sydney, Australia.

About LEAPLEAP stands as the premier provider of innovative Legal Practice Management Solutions globally and is a proud member of ATI, one of the foremost international LegalTech firms. For over three decades, our relentless curiosity and dedication to continuous improvement have driven us to reinvent productivity tools for legal professionals and their teams, fulfilling our core mission: ‘To assist lawyers who assist people.’ Our cutting-edge software is trusted by over 71,000 attorneys and their teams across small to medium-sized law firms.Joining our dynamic international team of dedicated high achievers means becoming part of a rapidly growing technology enterprise where change is the only constant. With over 1000 intelligent, compassionate, and ambitious ‘LEAPsters’ collaborating across Australia, Canada, the United States, the United Kingdom, the Republic of Ireland, Poland, and New Zealand, you’ll find yourself in inspiring company.Introducing the LEAP Estates TeamThe LEAP Estates team is a specialized division within LEAP, dedicated to developing software tailored for Estates Lawyers. Our cross-functional team comprises legal experts, software developers, designers, and client-focused professionals, all working in unison to deliver practical solutions utilized daily by Estate firms.Our efforts are guided by in-house Australian Estate Lawyers and informed by a robust client feedback system, ensuring our offerings are shaped by real-world legal practices and continually evolve to meet lawyers' actual working needs.Your RoleAs a Full Stack Software Engineer, you will collaborate with cross-functional stakeholders to transform innovative ideas into robust, production-ready applications. You will have significant ownership over architectural decisions, establish best practices, and lead the journey from concept to release.Your Responsibilities will include:Developing and delivering AI-powered applicationsDesigning, developing, and managing backend APIs and servicesEnsuring scalability to accommodate large volumes of data and usersImplementing secure customer authentication protocolsIdentifying and executing improvements in our software development, deployment, and delivery processesRevising, updating, refactoring, and debugging codeTesting and deploying applications and systemsUtilizing Git version control to manage the codebaseYour QualificationsAt least 3 years of hands-on experience as a Full Stack Software EngineerA strong enthusiasm for developing AI-driven applicationsProficiency in front-end development using modern web technologies, especially ReactExpertise in at least one contemporary server-side programming language or framework (e.g., C#/.NET, TypeScript/Node.js)Solid experience with database technologies (e.g., MySQL, PostgreSQL, DynamoDB)Comprehensive understanding of software development methodologies

Senior Full-Stack Software Engineer (Sydney)Engineering at EasygoAt Easygo, we are pioneers in creating exceptional entertainment experiences. Our engineering team thrives on a culture of continuous improvement, innovation, and learning. We emphasize personal growth and technical excellence, empowering our engineers to redefine the standards of software development.Why Join Us?Are you a driven and innovative software engineer eager to work in a dynamic environment that champions creativity and professional advancement? We invite talented individuals ready to solve complex challenges, develop scalable solutions, and collaborate with top-tier engineers in the entertainment sector.Engage in Complex Projects: Tackle intricate projects that test your skills. Solve technical challenges and build robust solutions.Accelerate Your Career: Benefit from mentorship and hands-on experiences that enhance your skill set. Learn from industry leaders and master software scaling.Collaborate with Experts: Partner with outstanding engineers, fostering innovation through teamwork and shared ideas.Supportive Culture: We prioritize your career development with personalized learning programs and mentorship opportunities.Embrace and Overcome Challenges: Confront challenges head-on, learn from setbacks, and celebrate collective achievements.Make a Lasting Impact: Your work will influence the future of entertainment.

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 BlinqBlinq is revolutionizing the way individuals connect and remember each other. What began as the premier digital business card has evolved into a platform facilitating over 50 million new professional relationships each year, gaining momentum at an impressive growth rate.Our ambition is to create the world’s intelligence layer for professional connections—a system that remembers details for you, nudges you when it matters, and keeps you engaged. If you're excited about joining a company with such scale and vision, we’d love to meet you.Why Join Us?• Accelerating Growth: We are doubling our annual recurring revenue every few months, broadening our product offerings, and rapidly expanding our teams in Sydney, San Francisco, Melbourne, and New York.• Well-Funded: With over $45 million raised from prominent investors like Blackbird, Touring Capital, Hubspot Ventures, and Square Peg, we continually invest in the talent and tools that drive our mission forward.• A Unique Opportunity: We are at a pivotal moment—big enough to have traction, yet small enough for you to influence our trajectory.• Customer Satisfaction: With 140k+ reviews and an outstanding 4.9/5 rating on the App Store, users globally trust Blinq to foster meaningful first interactions.• Intentional In-Person Collaboration: We value creativity and energy that comes from face-to-face interactions, thus we work together in the office three days a week, allowing the flexibility to choose the best work environment for the remaining days.Engineering at BlinqOur engineering team is the driving force behind Blinq’s success. We are dedicated to creating tools that enable instant and authentic sharing of personal identities. Each line of code, release, and experiment is geared toward making a substantial impact. If you excel at solving intricate, high-stakes challenges in a close-knit team, you will thrive here.Role & ImpactAs a Senior Android Engineer at Blinq, you will spearhead the advancement of our Android platform, crafting and implementing intuitive, scalable user experiences that cater to a global audience. You will set high standards for technical excellence, guide architectural choices, and play a crucial role in how we develop and scale mobile solutions at Blinq.

About Future Secure AI Future Secure AI develops artificial intelligence solutions for global enterprises. The company partners with a leading financial institution and maintains strong relationships at the executive level across major industries. With a focus on collaboration between humans and AI, Future Secure AI aims to improve organizational performance worldwide. The team values bravery, diligence, and curiosity. Leadership brings entrepreneurial experience and remains accessible. Professional growth is a priority, and every team member’s success matters. Role Overview: Senior AI Engineer - Software Based in Sydney, Senior AI Engineers (Software) play a key role in building Future Secure AI’s products and platforms. This position leads client-facing projects, working directly with customer and partner technical teams as well as internal colleagues to improve technology solutions. What You Will Do Lead technical engagements with clients and partners Collaborate with internal teams to advance product capabilities Balance complex coding assignments with broader business and product considerations Contribute to the ongoing development of AI-driven solutions What We Look For Strong organizational skills Experience working across functions and teams Ability to move between detailed technical work and high-level strategy Interest in advancing AI technology

Join Canva as a Senior Software Engineer specializing in Revenue Enablement. In this pivotal role, you will leverage your expertise in Java to develop innovative solutions that drive revenue growth and enhance user experience. You will work alongside a talented team of engineers to build scalable applications that cater to our global user base. This position offers the flexibility to work remotely anywhere across Australia and New Zealand, providing an excellent opportunity to balance your work and personal life.

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...

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 hospitality to healthcare. At Deputy, we prioritize transforming the frontline of work, ensuring businesses thrive while keeping their workforce engaged and satisfied. As we evolve into an AI-native organization, you'll be encouraged to leverage AI tools in your daily tasks. We provide the training and support necessary to utilize AI creatively and responsibly, enabling you to generate innovative solutions and streamline problem-solving. If you are driven by the desire to create impactful solutions that prioritize people and enhance business operations, we invite you to be part of our journey at Deputy!In this pivotal role within our Pay Rates domain, you will contribute to the development of next-generation pay interpretation and compliance features, automating complex award and agreement logic while delivering exceptional user experiences. Your expertise will drive strategic initiatives, ensuring quality outcomes and facilitating collaboration across product, design, and leadership teams to enhance our platform for millions of users, from SMEs to large enterprises.Each day, your contributions—from user-facing experiences to backend APIs—will empower and uplift the livelihoods of millions globally.

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.