Senior UI Software Engineer (React) at Mathspace | Sydney

At Mathspace, we are revolutionizing mathematics education by providing innovative, interactive learning software for students and teachers. Our agile, product-focused environment thrives on continuous customer feedback, ensuring a delightful learning experience for everyone involved.As a Senior UI Software Engineer on a collaborative product team, your cont…

The Trade Desk is a leading global technology company dedicated to fostering a more transparent and accessible internet for all through principled and intelligent advertising solutions. Our platform processes over 1 trillion queries daily, demonstrating our capability at an unparalleled scale. Beyond our technology, we pride ourselves on cultivating an award-winning culture rooted in trust, ownership, empathy, and collaboration. We cherish the unique experiences and viewpoints that every individual contributes to The Trade Desk, and we are devoted to creating inclusive environments where everyone can express their authentic selves each day.Are you driven by a passion for tackling complex challenges on a large scale? Do you aspire to be part of a vibrant, globally-connected team where your work will significantly impact the development of a better media ecosystem? Join us and discover why Fortune magazine consistently ranks The Trade Desk among the finest small to medium-sized workplaces worldwide.

At Ripple, we envision a future where value transfers seamlessly, akin to how information flows today. Our mission is bold and transformative – we are already reshaping the global financial landscape through our innovative crypto solutions tailored for financial institutions, businesses, governments, and developers. By enhancing the financial system, we create equitable opportunities for individuals worldwide, enabling everyone to engage more effectively with their economies. Join us and discover your potential while collaborating with a supportive team that champions your growth.As part of our ongoing evolution, GTreasury, now integrated into Ripple, enhances our capabilities in the multi-trillion-dollar corporate finance sector. With over four decades of experience, GTreasury empowers some of the most sophisticated companies globally, allowing them to manage and optimize liquidity in real-time across both traditional and digital assets.Become a key player in shaping the future of corporate treasury and the infrastructure driving the Internet of Value.We are on the lookout for a creative and forward-thinking Staff Software Engineer who is dedicated to crafting a top-tier platform alongside a world-class team. You will be instrumental in advancing technical software excellence and leading application development in design, implementation, and maintenance, helping us achieve remarkable outcomes.

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.

About AirwallexAirwallex is a pioneering unified payments and financial platform tailored for global enterprises. With a unique blend of proprietary infrastructure and cutting-edge software, we empower over 200,000 businesses worldwide—including notable names like Brex, Rippling, Navan, Qantas, and SHEIN—with integrated solutions to manage everything from business accounts and payments to spend management and treasury, alongside embedded finance on a global scale.Founded in Melbourne, we boast a vibrant team of over 2,000 talented and innovative professionals across 26 offices globally. Valued at US$8 billion and supported by renowned investors such as T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, Airwallex is at the forefront of shaping the future of global payments and financial technology. If you are eager to undertake the most ambitious work of your career, we invite you to join us.

At IMC, technology is the driving force behind our success. Our proprietary software is designed in-house and plays a crucial role in executing millions of trading decisions daily. We thrive by making informed and rapid decisions that give us an edge over our competitors. The engineering teams based in Sydney tackle a diverse range of applications, tools, and functionalities, including the implementation of trading algorithms, options pricing, volatility calculations, simulation frameworks, market risk applications, trade reconciliation systems, and data analysis and visualization tools for traders. Our commitment to innovation means we often need to develop not only the business applications but also the cutting-edge tools that support our development processes. We are actively seeking to enhance our software engineering teams across our Strategy, Research Tooling, and Backbone teams. The Strategy Developers collaborate with our options research and trading teams in Sydney to design and implement systematic trading strategies. In this role, you will engineer solutions within a Python-centric ecosystem that empowers our researchers and traders to transition strategies from initial prototypes to full production. You will also contribute to the tactical development of trading, analysis, and visualization tools for front-office operations. The Backbone Developers focus on creating scalable, business-critical applications and automation tools that support IMC's Sydney Mid-Office and Risk Management departments. They gather requirements and feedback from various internal stakeholders to implement innovative automation solutions through advanced coding practices. The Research Tooling Developers work closely with APAC Quant Research and other engineering teams to build and enhance tools that facilitate cutting-edge quantitative research. Our systems enable researchers to execute large-scale computations on distributed clusters, facilitating the exploration of new trading strategies, model training, and back testing. Your Core Responsibilities: Develop, test, deploy, and maintain high-performance Python applications. Collaborate with traders, researchers, quants, and engineers to create scalable and reliable software solutions. Take full ownership of the development process, from gathering requirements to deploying in production. Implement automation and optimization projects to enhance trading and research workflows. Utilize advanced automated testing practices and frequent deployments to achieve agile and incremental improvements. Evaluate trade-offs between latency, throughput, simplicity, scalability, and maintainability within a complex technical environment.

ABOUT THE ROLE: At IMC Trading, our Software Engineers do much more than just code; they are innovators who identify new opportunities, develop advanced technologies, and tackle complex challenges. Each day, our software influences millions of trading decisions in highly competitive markets worldwide, enabling us to outpace our competitors through smarter and quicker choices. As a Software Engineer Intern, you will contribute to impactful projects and make a tangible difference in our operations. In this role, you will receive guidance from a dedicated mentor who will support your project work and professional growth, along with opportunities for pair programming and code reviews. You will engage with real-world projects that add value to both developers and traders. Your project focus may include one of the following areas: Low Latency: You will work on the development and optimization of ultra-fast systems vital to IMC’s trading infrastructure, ensuring minimal latency to facilitate high-frequency trading. This will primarily involve C++ programming and collaboration with hardware, performance, and network engineers. Algorithmic Trading: Here, you will create and enhance systems that drive our trading strategies, developing algorithms for pricing and risk assessment, and building tools for analyzing and trading financial products using Java or Python. WHAT YOU’LL DO: Engage in real-world problem-solving and algorithm design while learning from experienced engineers and traders. Collaborate in a culture of creativity and innovation where teamwork is celebrated and knowledge sharing is encouraged. Deepen your understanding of high-frequency trading. Establish important relationships across our trading and technology divisions.

Join Our TeamAt Q-CTRL, our Sensing Engineering team is at the forefront of transforming quantum research into tangible solutions for pressing real-world challenges. We specialize in the design, development, and field validation of advanced quantum sensors that underpin our flagship products, including Ironestone Opal, a revolutionary solution for navigation in GPS-denied environments.No prior experience in quantum technology is necessary to make a significant impact at Q-CTRL. We prioritize strong engineering principles, a product-oriented approach, and a passion for tackling complex engineering challenges in quantum sensing.Role OverviewWe are on the lookout for a talented Embedded Software Engineer to create firmware that drives our control, sensing, and actuation systems, automating the operations of our quantum sensors. Your primary focus will be on developing new applications on the Xilinx Zynq + Embedded Linux platform, collaborating closely with research scientists to propel scientific progress and showcase our technology in real-world environments. The firmware you develop will involve real-time constraints, data acquisition, signal processing, sequence execution, network communication, and hardware/FPGA interfacing. You will be part of a dynamic team dedicated to advancing quantum sensing technologies for defense and aerospace applications, working alongside experts in areas such as cold-atom interferometry, magnetometry, and inertial navigation.

At Riot Games, we prioritize the players' experience above all. Our dedicated team in Sydney collaborates with global partners to develop cutting-edge features and technologies for an exciting upcoming R&D title. Whether you're enhancing backend architecture, creating tools for developers, or designing engaging player-focused features, you will help us build systems that enhance performance, scalability, and user engagement. As a Staff Software Engineer (Internal Job Title: Software Engineer III), you will take on technical leadership in critical areas of our projects. Your contributions will span the entire development lifecycle, from designing scalable solutions to mentoring team members and collaborating across departments to ensure top-tier experiences for both players and developers. At Riot, our software engineers possess extensive expertise in specific technical domains while also embracing the chance to work across different areas. You will tackle complex challenges using both new and existing technologies, forging innovative solutions to deliver unmatched value to players. You will report to an Engineering Manager within the R&D Game Team.

At IMC, technology is the cornerstone of our operations. Our proprietary software drives millions of trading decisions each day, allowing us to outpace our competitors through enhanced decision-making speed and accuracy. The C++ Execution development teams based in Sydney focus on software that operates within the latency-sensitive layers of our technology stack, influencing every aspect of our organization. This includes ensuring market connectivity, managing vast data volumes, implementing sophisticated trading algorithms, and integrating cutting-edge hardware solutions.Your Core Responsibilities:As a Software Engineer, you will collaborate within multidisciplinary teams consisting of engineers, Traders, Researchers, and Quants to tackle complex projects while overseeing the full product development lifecycle—from requirement gathering to production deployment. Your role will involve creating reliable, high-performance software that balances production speed with quality and testability. Utilizing advanced automated testing and continuous daily deployments will enable you to deliver agile and incremental enhancements. You will consistently face challenges that require you to weigh trade-offs related to latency, throughput, simplicity, scalability, and maintainability within a diverse array of systems and technologies.Develop, test, deploy, and maintain applications and automation solutions for the Trading and Hardware Development teams.Engage with internal clients to gather requirements and feedback, devising innovative automation solutions through creative coding practices.

Join our dynamic Platform Software team at Arista Networks, where you will play a pivotal role in developing cutting-edge diagnostic software designed to validate high-speed digital designs and enhance manufacturing yields for our products used in the largest data centers of the computer networking industry.Collaborate with ExpertsAs part of the Platform software team, you will be involved in every stage of the software development lifecycle, from initial concept through to final production at our off-site manufacturing partners. You will work alongside skilled engineers and hardware teams to ensure design integrity and product validation. Your contribution will be essential in crafting diagnostic specifications and developing robust software solutions that directly improve production quality and efficiency.Your ResponsibilitiesThis role requires a solid foundation in software engineering, along with a keen understanding of hardware design and third-party network processors. You will not only manage ASIC-based networking solutions but also engage in hardware bring-up, feature development, software testing, and providing expert support to our customers.Design and implement production-grade diagnostics for high-speed digital boards and ASICs to facilitate hardware validation.Create and test manufacturing diagnostics to support mass production of digital network devices.Assist in the bring-up of newly manufactured hardware and initiate software deployment.Conduct root-cause analysis to troubleshoot reported issues.Support the integration of new platform software and hardware features.Collaborate with hardware engineers on schedules and feature implementations.Engage in design discussions, code reviews, and project management activities.Develop system software using C and scripting languages (Python, Bash) for our Linux-based platform.Work autonomously and as part of a team.Utilize version control systems to document and track software changes systematically.

Location: Sydney, Australia (Hybrid: 3 days per week in office) Relevance AI develops a platform for building and managing intelligent agents that help teams automate workflows and improve collaboration. The company’s technology supports major clients such as Canva, Databricks, Confluent, Autodesk, Lightspeed, Rakuten, Aveva, Qualified, and Activision Blizzard, helping them strengthen operations, marketing, and sales. Backed by Bessemer Venture Partners, Insight Partners, Peak XV, and King River Capital, Relevance AI completed its Series B funding round in April 2025. With headquarters in San Francisco and Sydney, the team values curiosity, collaboration, and decisive execution. In 2025, LinkedIn recognized Relevance AI as Australia’s #1 Startup. Role overview The Enterprise team at Relevance AI seeks a Staff Software Engineer based in Sydney. This group focuses on building and scaling platform features for the company’s largest and most demanding customers. Projects emphasize security, reliability, compliance, and adaptability at enterprise scale, with particular attention to identity and access management, auditability, and regulatory requirements. What you will do Offer technical leadership and hands-on execution within the Enterprise team Work closely with product, engineering, and go-to-market teams to deliver enterprise-grade capabilities and backend systems Design complex systems and influence architecture across teams Ensure the platform upholds high standards for security, reliability, and compliance See the direct impact of your work on customer outcomes Impact and growth Each engineering team at Relevance AI addresses a distinct aspect of the AI workforce. The Enterprise team specializes in scaling AI systems for global organizations. This role plays a key part in making AI solutions functional, dependable, and production-ready for enterprise use.

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.

About AirwallexAirwallex is a cutting-edge, unified payments and financial platform designed specifically for global businesses. Our unique blend of proprietary infrastructure and innovative software empowers over 200,000 businesses worldwide—including industry leaders like Brex, Rippling, Navan, Qantas, and SHEIN—to manage everything from business accounts and payments to spend management and embedded finance seamlessly on a global scale.Founded in Melbourne, we have assembled a team of over 2,000 of the brightest minds in technology across 26 offices worldwide. With a valuation of US$8 billion and backing from renowned investors such as T. Rowe Price, Visa, and Mastercard, Airwallex is pioneering the future of global payments and financial solutions. If you aspire to undertake the most ambitious work of your career, we invite you to join our journey.

Join Canva as a Staff Software Engineer on our dynamic Data Synchronization Team! We are looking for talented engineers proficient in Golang and Python to help us enhance our data synchronization capabilities. This is a fantastic opportunity to work with cutting-edge technologies on an impactful project that serves millions of users worldwide. As part of our collaborative team, you will be responsible for designing and implementing scalable systems that ensure seamless data integration across various platforms.

Join Immutable, the fastest-growing gaming platform, as a Senior Fullstack Engineer focusing on frontend development while engaging with backend systems. Collaborate with a talented team to shape the future of player onboarding, discovery, and engagement in the gaming industry. This role offers a unique opportunity to influence product decisions and work in agile squads to deliver innovative solutions that empower game studios.

Anduril Industries is a pioneering defense technology firm dedicated to enhancing U.S. and allied military capabilities through innovative technology. By integrating the expertise, technology, and business models of the 21st century's most forward-thinking companies into the defense sector, Anduril is revolutionizing the design, construction, and sales of military systems. Our advanced suite of systems is powered by Lattice OS, an AI-driven operating system that transforms vast data streams into a real-time, 3D command and control center. As we navigate a new era of strategic competition, Anduril is committed to delivering state-of-the-art autonomy, AI, computer vision, sensor fusion, and networking technology to the military in record time.At Anduril Australia, we are at the forefront of developing unmanned systems for subsurface and other domains, leveraging unsupervised autonomy to provide long-endurance, multi-mission capabilities to our clients. Our projects, including the Extra Large Autonomous Undersea Vehicle (XL-AUV) Program, require seasoned Senior Site Reliability Engineers with extensive experience in modern software development, delivery, and sustainment toolchains. The Senior Site Reliability Engineer will utilize their expertise to swiftly architect, design, deliver, support, and evolve the toolchains necessary for the next generation of autonomous systems.

Join a Revolutionary CompanyPalantir Technologies is at the forefront of crafting innovative software that transforms how organizations leverage data for critical decision-making and operational efficiency. Our cutting-edge platforms empower partners to tackle complex challenges, from developing life-saving pharmaceuticals to predicting supply chain disruptions and aiding in the recovery of missing children.Position OverviewAs a Forward Deployed Software Engineer (FDSE), you will engage directly with clients to swiftly identify their most pressing challenges and devise data-driven solutions. Our clients depend on Palantir’s technology for their essential operations, often starting with open-ended inquiries such as “What is causing our flight delays?” or “How can we enhance our detection of money laundering activities?” In this role, you will utilize your analytical skills, creativity, and technical expertise to help organizations harness their data for meaningful impact. You will gain unique insights into pivotal industries and institutions.FDSEs operate similarly to startup CTOs, working in small, agile teams with considerable autonomy, overseeing the full lifecycle of high-stakes projects. Your responsibilities may include collaborating on architectural designs with fellow engineers, managing vast datasets, developing custom web applications, engaging with customer executives, and formulating strategic plans for your team.If you're aspiring to be an entrepreneur or a leader in engineering, Palantir offers an unparalleled environment with exceptional colleagues to foster your growth. You'll learn to dissect complex problems and comprehend the implications of various solutions. You'll explore new technologies and programming languages, and even contribute to their development. Working independently within a supportive community will enable you to make impactful decisions as you evolve professionally.

Join Our Innovative Team at LorikeetAt Lorikeet, we are revolutionizing customer support through cutting-edge AI technology tailored for complex sectors such as fintech, healthtech, marketplaces, and delivery services.Our mission is to automate support responses using transparent and customizable AI solutions, enabling support teams to focus on engaging with intricate cases rather than being bogged down by repetitive tickets. By liberating teams from reactive support, we empower them to offer personalized concierge services to their customers.We bring together a talented team, leveraging the expertise of industry veterans like Jamie from Google’s generative AI team and Steve from Stripe, along with professionals from renowned companies such as Canva, Atlassian, Dropbox, and Dovetail.Our company is scaling rapidly with a robust customer base, substantial revenue, an exciting roadmap, and a strong sales pipeline. We have successfully raised over USD 50 million from prestigious VCs and angel investors, including QED, Blackbird, Square Peg, and several industry leaders.Our Esteemed Clients Include:The largest telehealth company in Australia,The leading bank for teens in the US,One of the top NFT marketplaces by trading volume,A prominent Web3 gaming company,...and numerous enterprise clients handling over a million support tickets annually.Why Work With Us?Engineering-Driven Culture: Our technical founders foster an environment where most team members write code. Every engineer is empowered to take ownership of challenges and implement impactful solutions.Collaborative Work Environment: We pride ourselves on a warm, mature, and flexible culture that values teamwork. Located in our inviting Surry Hills office, we prioritize efficiency and adaptability to accommodate our team members' diverse needs.

At Riot Games, our engineers possess a wealth of expertise in specialized technical domains while also relishing the chance to engage in diverse areas. As an Engineering Manager within Riot, you will unify organizational objectives by crafting a compelling engineering vision and delivering innovative solutions for organizational structure. You will also act as a mentor to a talented team of engineers, monitoring their performance and fostering their professional development.VALORANT represents Riot’s innovative approach to character-driven tactical shooting games. To learn more about VALORANT, click here.In your role as the Manager of Software Engineering for the VALORANT team, you will not only be involved in coding but will also guide your team members in advancing their careers while helping the team achieve its product and technical milestones. As a pivotal leader in our Core Services team, you will oversee a group of engineers focused on enhancing the construction, delivery, and operation of VALORANT's global services platform. You will spearhead the creation of new services, drive ongoing enhancements to existing services, establish standards and frameworks to elevate service development across VALORANT, and refine the tools and pipelines utilized for deploying and managing these services. Close collaboration with technical teams at Tencent will be essential to optimize service delivery and operations in China, bridging gaps in developer experience and platform performance between Tencent and Riot regions. You will report directly to the Senior Manager of Engineering for VALORANT in Sydney.This is a full-time position based in Sydney, Australia.