Senior Full Stack Software Engineer at Prospa | Sydney

Quantium is seeking a Senior Full Stack Engineer specializing in Artificial Intelligence to join the Sydney team. This position focuses on designing, building, and deploying solutions that improve efficiency and performance across company platforms. Key Responsibilities Collaborate with colleagues from various disciplines to integrate advanced AI features into existing systems. Use broad technical knowledge to develop and implement new tools and enhancements. Contribute to technology strategy by supporting the adoption of AI within core products. Location This position is based in Sydney.

Haast is building an AI platform to transform how enterprises handle compliance. The team is focused on automating manual legal and compliance workflows, aiming to deliver faster reviews and boost productivity for large organizations. With $12 million USD in Series A funding from Peak XV Partners, DST Global, and Airtree, Haast is expanding its Sydney office to support this mission. Role overview The Senior Full Stack Engineer will join a high-autonomy engineering team, working on systems that directly impact enterprise clients. This role involves designing, building, and maintaining scalable services and APIs for Haast’s compliance platform. Engineers here are responsible for technical decisions from architecture through deployment, iterating quickly based on user feedback. There is close collaboration with the founding team, and the work focuses on new systems rather than legacy code. What you will do Design, architect, and manage scalable services and APIs powering the LLM compliance platform. Shape how AI-driven insights are delivered to users, prioritizing reliability, speed, and usability. Make rapid, high-impact technical decisions. Question assumptions to improve user experience. Contribute to engineering culture, standards, and tool selection as the team grows. What Haast is looking for This position suits engineers who want to influence product direction and development processes, enjoy solving complex technical problems, and are comfortable working in a scaling startup environment. Experience with full stack development and interest in building infrastructure for enterprise compliance are important. This role is based in the Sydney office.

Join Coates Group as a Senior Full-Stack Engineer, where you will spearhead the technical implementation and strategic advancement of cutting-edge digital menu board and content management solutions tailored for Quick Service Restaurant (QSR) clients. In this pivotal role, you will leverage your extensive expertise in TypeScript, cloud infrastructure, and object-oriented development to enhance architectural design, scalability, and robustness of our systems. As a Senior Full-Stack Engineer, you will mentor a team of engineers, oversee intricate projects, and foster a culture of technical excellence, innovation, and continuous improvement.

Haast is building a platform that brings enterprise compliance into the tools teams use every day. The Senior Full Stack Engineer - Integrations role focuses on strengthening this integration layer, making compliance intelligence accessible and practical for customers across platforms like Salesforce, Adobe, and Microsoft. Role overview This position centers on leading the architecture and development of integrations between Haast’s compliance platform and major enterprise tools. The work involves designing and implementing APIs, webhooks, OAuth flows, and authentication standards to ensure secure, scalable connections. The goal is to embed AI-driven compliance insights directly into customer workflows, creating a seamless and reliable experience. What you will do Design and build production-ready integrations with platforms such as Salesforce, Adobe, Microsoft, and others. Architect the integration platform, focusing on APIs, webhooks, authentication, and scalability. Integrate AI insights into customer workflows, aiming for speed, reliability, and ease of use. Make timely technical decisions about integration patterns, dependencies, and platform direction. Question existing approaches to improve user experience across integrated systems. Help shape the engineering culture, standards, and tools as the team grows. About Haast Haast is building agentic systems to automate manual tasks for legal and compliance teams in enterprises. The platform is designed to speed up compliance reviews and boost productivity. Backed by a recent $12M USD Series A from Peak XV Partners, DST Global, and Airtree, Haast is growing to become the go-to infrastructure for enterprise compliance management.

Join Mable, a key player in the Attain Healthtech Group, where we are committed to transforming the care and support sector for individuals with disabilities and older Australians. Our mission is clear: to foster positive change through technology that empowers our clients to achieve better outcomes.As part of the Mable team, you will work in a vibrant, high-performing environment that prioritizes innovation and reliability, contributing to the enhancement of our healthtech platform.About the RoleWe are looking for a Senior Full-Stack Engineer with a strong emphasis on backend development. You will be integral in delivering reliable functionality and ensuring our platform remains stable through thoughtful problem-solving. Your expertise will help us tackle complex backend challenges and innovate technical solutions, enhancing the efficiency and resilience of our platform.

About BlinqBlinq is revolutionizing the way people connect by creating the fastest and most intuitive method to share personal and professional identities. Starting as the world's leading digital business card, we now facilitate over 50 million new connections annually, growing at an impressive unicorn pace.Our vision is to build the ultimate intelligence layer for professional relationships—one that remembers details for you, prompts you at the right moments, and keeps you actively engaged. If you are excited about being part of a project with such scale and ambition, this is the place for you.Why You Will Enjoy Working Here• Rapid Expansion: We are doubling our ARR every few months, broadening our product offerings and swiftly expanding our teams in Sydney, San Francisco, Melbourne, and New York.• Strong Financial Backing: We have raised over $45 million from notable investors including Blackbird, Touring Capital, Hubspot Ventures, and Square Peg, constantly investing in the tools and talent that drive our mission forward.• A Unique Opportunity: We are at a pivotal moment—large enough to have traction, yet small enough for you to make a significant impact on our journey.• Customer Satisfaction: With more than 140,000 reviews and a 4.9/5 rating on the App Store, people globally trust Blinq to make meaningful first impressions.• Collaborative Environment: We value creativity and energy through in-person interactions, fostering teamwork with 3 days a week in the office while allowing flexibility for remote work.Engineering at BlinqOur engineering team is the driving force behind Blinq's success. We are developing tools that allow for immediate and human-like sharing of personal information. Each line of code, every launch, and every test is aimed at achieving significant outcomes. If you excel in solving intricate, impactful challenges within a close-knit team, you will thrive here.Role & ImpactIn the role of Senior Full Stack Engineer at Blinq, you will be instrumental in shaping how professionals nurture and expand their online networks. This includes overseeing customer onboarding processes, team dashboards, and administrative tools, all while utilizing React, Node.js, and GraphQL. Collaborating closely with design, product, and backend teams, you will ensure seamless, responsive user experiences and assist in scaling our frontend architecture to accommodate millions of users.This position offers significant visibility across our product suite and the chance to influence both user experience and technical direction.

Join MYOB as a Senior Full Stack Developer specializing in Data & AI. We are looking for innovative thinkers who are passionate about cutting-edge technology and eager to make an impact. In this role, you will be responsible for developing robust applications that leverage data-driven insights and AI solutions.Your expertise in both front-end and back-end development will allow you to contribute significantly to our projects. You will work collaboratively with cross-functional teams to design, implement, and maintain software solutions that enhance user experiences and drive business success.

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.

Coates Group seeks a Senior Full-Stack Engineer in Sydney to shape the technical direction and delivery of digital menu board and content management solutions for Quick Service Restaurant (QSR) clients. This role plays a central part in building and evolving digital products that support major QSR brands. Responsibilities Lead the design and development of digital solutions tailored for QSR customers. Use advanced knowledge of TypeScript, cloud infrastructure, and object-oriented programming to strengthen system architecture, scalability, and reliability. Oversee complex projects from initial planning through to delivery. Mentor fellow engineers, supporting their technical growth and development. Champion a culture of innovation and continuous improvement within the team. Key Technologies TypeScript Cloud infrastructure (platforms not specified) Object-oriented development

Join our dynamic engineering team at Spotify as a Full Stack Engineer. In this role, you will be responsible for designing and implementing web applications that deliver exceptional user experiences. You will work on both the front-end and back-end technologies, collaborating with cross-functional teams to drive innovation and improve our platform.

Role Overview blinq is hiring a Full Stack Engineer focused on backend development in Sydney, New South Wales. This role centers on building and maintaining scalable backend systems that power our applications. The work supports both product features and smooth user experiences. What You Will Do Design, develop, and maintain backend services and APIs Work closely with engineers, designers, and product teams to deliver features Contribute to system architecture and technical decisions Help improve performance, reliability, and scalability across our platforms

Join Escrow.com, the largest and most trusted online escrow service globally, where buyers and sellers depend on us to securely handle their funds during high-stakes transactions. Whether it's domain names, vehicles, or entire businesses, we facilitate seamless buying and selling experiences.We are currently seeking a Senior Full Stack Software Engineer to become part of our team in Sydney.Unlike mega-cap technology firms where your contributions may feel insignificant among thousands, and unlike startups where you may grapple with ephemeral projects devoid of mentorship, Escrow.com is the ideal middle ground. We are a right-sized organization where you can forge genuine connections with your colleagues while still having the resources to innovate without fear.Here, you won't be just another cog in the machine. Our work revolves around engaging and complex real-world challenges that have tangible impacts. You will tackle a diverse array of global internet-scale problems, allowing you to grow your skills in a cross-functional environment.As a member of our team, you will not only design, build, and deploy scalable features but also make a direct impact on millions of users worldwide. You'll engage in architecting web applications, writing optimized SQL for extensive data sets, structuring extensible data and application logic, and crafting high-quality APIs using a combination of open-source tools and premium commercial software.Our technology stack includes Python-based Flask (alongside some Golang) microservices, React.js for front-end development, and traditional SQL RDBMS systems, all powered by Amazon Web Services. You have the flexibility to choose your operating system for your company laptop—most of our developers prefer Ubuntu Linux, but all options are welcome!To thrive in this role, you should possess:Proficiency in several web development languages, including Python, Golang, PHP, Node.js, or Ruby.Experience with relational databases and SQL, preferably MySQL.A background or interest in scalable web engineering.The ability to collaborate within an agile team environment, consistently delivering value to customers.Familiarity with Linux.Experience in developing SaaS products.Cloud computing experience, preferably with AWS.Strong written and verbal communication skills.A keen sense of ownership with the ability to self-manage.Excellent troubleshooting and creative problem-solving skills.Experience in designing and implementing complex software systems.Previous experience in mentoring or training junior developers.

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

We are expanding our engineering team and are seeking talented Full-Stack Software Engineers to elevate our company to new heights.This role is not your typical corporate position. If you're a high achiever with exceptional skills, looking for more than a mundane job, eager to collaborate with the brightest minds, and thrive without constant supervision, this is the opportunity for you.Joining a large tech company as the 10,000th employee may make it difficult to see your impact. Conversely, at a startup, you might work on temporary projects with limited mentorship and minimal chance to effect real change.At Freelancer, you will tackle a diverse array of global, internet-scale challenges that offer you real responsibility and the chance to make a substantial impact while rapidly enhancing your skills. We champion a meritocratic environment, actively promoting from within.Our mission is to create one billion jobs, and we genuinely make a difference in providing opportunities and income to individuals worldwide. Freelancer truly stands out in this regard.You will encounter a wide variety of engineering challenges. You’ll have the chance to work with an extensive range of technologies across our platforms. Freelancer.com is an Alexa top 1000 website, featuring a modern frontend stack that includes Angular, TypeScript, and RxJS. Our backend supports a robust suite of services that power a global marketplace including messaging, payments, translations, file services, and a notification system that sends millions of notifications every hour. We deploy code into production multiple times a day.

About LEAPLEAP Legal Software stands as the foremost provider of Legal Practice Management Solutions globally and is a proud member of ATI, one of the largest international LegalTech companies. With over 30 years of unwavering dedication to innovation and improvement, we redefine productivity tools for legal professionals, embodying our mission to ‘Help lawyers who help people’. Our cutting-edge software is trusted by more than 71,000 legal practitioners and their teams across small and medium-sized law firms.Join our dynamic international team of driven achievers within a rapidly expanding technology enterprise where change is the only constant. You will be a part of a collaborative network of over 1,000 skilled, compassionate, and ambitious ‘LEAPsters’ working together across Australia, Canada, the United States, the United Kingdom, the Republic of Ireland, Poland, and New Zealand.Meet the Personal Injury TeamThe Personal Injury team is a dedicated division within LEAP, specializing in developing software tailored for personal injury lawyers. Our cross-functional team comprises legal experts, software engineers, designers, and client-focused specialists who collaborate closely to create practical products utilized daily by PI firms. Our work is guided by in-house Australian Personal Injury Lawyers and informed by a robust client feedback mechanism, ensuring our offerings are shaped by real legal practices and continue to evolve with the needs of lawyers.Your RoleAs a Full Stack Software Engineer, you will partner with various stakeholders, including product owners and client operations, to transform innovative concepts into functional web applications available within LEAP Legal Software. Supported by the broader Engineering organization (LEAP Dev), you will take full ownership of building and maintaining these applications, with an initial focus split evenly between frontend and backend development.Key Responsibilities:Research and develop emerging trends, standards, and best practices for frontend development.Design, develop, and manage backend APIs and services.Ensure scalability to accommodate high volumes of data and users.Implement secure customer authentication mechanisms.Continuously find ways to enhance our software development, deployment, and delivery processes.Revise, update, refactor, and debug existing code.Test and deploy applications and systems efficiently.Utilize Git version control to manage codebases effectively.

Join our dynamic team at bigtincan as a Full Stack Developer, where you will play a pivotal role in shaping our innovative digital solutions. You will work across the entire stack, from designing intuitive user interfaces to developing robust backend services. Your expertise will help enhance our products and provide exceptional experiences for our users.

About LEAPLEAP is the foremost provider of innovative Legal Practice Management Solutions globally and is a proud part of ATI, one of the largest international LegalTech corporations. For over three decades, our dedication to curiosity and constant enhancement has driven us to redefine productivity tools for legal professionals and their teams, in alignment with our mission to 'Help lawyers who help people'. Our industry-leading software is utilized by more than 71,000 legal practitioners and their teams in small to medium-sized law firms.Joining our vibrant international team of high achievers means becoming part of a rapidly expanding tech company where change is the norm. With over 1000 intelligent, compassionate, and ambitious ‘LEAPsters’, you will find yourself in excellent company across Australia, Canada, the United States, the United Kingdom, the Republic of Ireland, Poland, and New Zealand.Introducing the Criminal Law TeamThe Criminal Law team is a dedicated division within LEAP, specializing in developing software for criminal lawyers. Our cross-functional team comprises legal experts, software engineers, designers, and client-focused professionals, collaborating closely to deliver practical products used daily by criminal law firms. Our work is guided by in-house Australian criminal lawyers and informed by a robust client feedback mechanism, ensuring our solutions are shaped by genuine legal practice and continue to evolve in sync with how lawyers operate.Your RoleAs a Full Stack Software Engineer, you will collaborate with various stakeholders, including product owners and client operations, to transform innovative ideas and concepts into functional web applications for LEAP Legal Software. With the backing and resources of our broader Engineering organization (LEAP Dev), you will hold complete responsibility for the development and maintenance of these applications. Initially, your work will involve a balanced focus of 50% frontend and 50% backend development.Your ResponsibilitiesInvestigate and implement emerging trends, standards, and best practices for frontend development;Design, develop, and manage backend APIs and services;Ensure scalability to accommodate large volumes of data and users;Implement secure customer authentication protocols;Identify opportunities to enhance our software development, deployment, and delivery processes;Revise, update, refactor, and troubleshoot code as necessary;Test and deploy applications and systems;Utilize Git version control to manage the codebase.

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

Location : Sydney, Australia (Hybrid - 3 Days In Office)About Us At Relevance AI, we are revolutionizing the AI workforce. Our mission is to empower teams to effectively delegate significant tasks to AI agents that think, act, and collaborate like experts.With our platform, anyone can effortlessly create and manage intelligent agents that streamline workflows, make informed decisions, and enhance collaboration. Our cutting-edge technology is already trusted by industry leaders like Canva, Databricks, Confluent, Autodesk, Lightspeed, Rakuten, Aveva, Qualified, and Activision Blizzard, enabling them to achieve excellence across operations, marketing, and sales.Backed by top-tier investors such as Bessemer Venture Partners, Insight Partners, Peak XV, and King River Capital, we successfully raised our Series B in April 2025 to accelerate growth and push the frontiers of agentic automation.With headquarters in San Francisco and Sydney, we thrive on curiosity, collaboration, and execution. We believe in moving fast, thinking big, and winning together. In 2025, we were honored to be recognized as LinkedIn’s #1 Startup in Australia.If you are eager to shape the future of AI, we welcome you to join our dynamic team.The Role We are looking for talented Senior Engineers to join our AI team and develop the next generation of AI-driven products.This is a high-impact applied AI position for engineers who want their contributions to make a significant difference. You will create and deploy real AI features that address customer needs across various industries, transforming advanced agentic AI into reliable production systems.This role transcends traditional ML or MLOps positions. You will engage with the entire stack to design, develop, and deliver AI-powered workflows, tools, and user experiences. Your responsibilities will encompass prompt and context engineering, agent orchestration, backend services, APIs, infrastructure, and user-facing interfaces, often within the same project.You will be part of a high-performing team of AI specialists, reporting directly to our co-founder, and collaborating closely with various Product & Engineering teams. If you are passionate about LLMs, multi-agent systems, and solving complex, real-world AI challenges, this role is perfect for you.Your Impact Develop Agents and Multi-agent Systems: Design and...