Top React Jobs in Sydney

Build full-stack, low-latency trading and pricing tools for options traders. Collaborate with traders, researchers, and business stakeholders to design intuitive frontends and scalable backend services, prototype and productionize distributed systems, and expand trading capabilities globally while improving performance, stability, and usability.

The Senior Software Engineer will build scalable backend systems, contribute to full-stack development, collaborate on product features, and ensure code quality through reviews and CI/CD processes.

Design, develop, test, and deploy full-stack web applications and APIs to support investment management, portfolio operations, reporting, and business workflows. Build backend services, optimise SQL and database performance, integrate systems via APIs, contribute to cloud modernization, participate in architecture and code reviews, and improve application performance, security, and maintainability while collaborating with product and investment teams.

Looking for a Software Engineer to build scalable backend and APIs, collaborate on modernisation tools, and contribute to code analysis. Requires strong skills in Python/Java and relational data modelling.

Lead a software engineering team focused on data streaming products, driving architecture, mentoring engineers, and collaborating with product management.

Build and maintain front-end features with React and TypeScript, refactor legacy code, fix issues across the stack, collaborate with PMs and designers, conduct code reviews, mentor peers, improve developer experience, and drive performance, reliability, and security improvements.

Lead and mentor engineers to design, build, and maintain scalable automation and onboarding systems. Implement AI/data-driven risk detection, collaborate with product/ops/compliance, drive architecture and reliability, and improve operational efficiency.

Build and ship high-quality micro-frontend web applications using React and TypeScript. Implement Backend-for-Frontend patterns with Apollo GraphQL and Node.js, create shared design system components, publish NPM packages, deploy on GCP/Aliyun K8s with Cloudflare and GitLab CI/CD, and ensure test coverage using React Testing Library and Cypress. Collaborate with design and frontend guild to reduce technical debt and research new frontend technologies.

Build and productionize real-time AI anime avatars: front-end creation and interaction flows, integrate voice/LLM/memory and image/video generation, develop APIs, queues, databases and observability, optimize rendering/latency/cost/safety, and rapidly iterate from prototype to production with product and design.

Lead development of a portable React component library that renders on web and React Native. Abstract cross-platform complexity, set standards for building and distributing components, mentor engineers, drive adoption across product teams, and evolve the design system for AI-enabled workflows.

Senior Full Stack Developer to build production-grade generative AI SaaS and agentic assistants. Ship features end-to-end, lead architecture, mentor juniors, champion testing, security, observability, and work across Python/Flask and TypeScript stacks in Azure.

Join a small cross-functional team to build a 0➜1 product. Work across the full stack from design to deployment, architect scalable infrastructure, implement engineering best practices, ensure security, reliability and performance, and collaborate closely with founders to rapidly deliver customer-focused features.

Work with a small engineering team to write, test, and ship production-ready code across front-end and back-end (React, Node.js). Collaborate with stakeholders, support QA, customer onboarding and deployments, learn from the Lead Engineer, and contribute to product features with autonomy in a hybrid startup environment.

Build and maintain scalable, secure web systems used by schools. Write clean code across frontend and backend, collaborate with Product and Design, participate in sprint planning and technical design, improve CI/CD and monitoring, design database solutions, and champion engineering best practices.

Build high-performance, scalable React+TypeScript web applications for payment experiences. Design reusable UI components and optimize frontend performance while collaborating with cross-functional teams on architecture, testing, accessibility, and product delivery.

Lead frontend architecture and cross-team initiatives for Canva's Photo group, improve rendering and performance, mentor senior engineers, collaborate with ML, PMs and designers, and contribute hands-on to critical technical projects.

The Senior Software Engineer will design, develop, and deploy scalable software solutions while mentoring junior engineers and collaborating with cross-functional teams.

Design and build an in-house fraud/risk evaluation platform as a senior full-stack engineer. Translate product requirements, review architecture, implement cross-stack services, own monitoring and alerting, and collaborate with stakeholders to deliver real-time decisioning capabilities.

Develop and enhance high-performance applications and scalable cloud solutions using Java, Python or C++. Work with distributed systems, streaming platforms (Kafka, Spark, Hadoop), databases, RESTful APIs, microservices, CI/CD tools, and frontend frameworks (React/Angular/Redux). Collaborate across global teams, ensure security/compliance, and manage multiple projects in a fast-paced environment.

Join the API and Integrations team to build and maintain front-end focused full‑stack features using C#/.NET and JavaScript/TypeScript frameworks. Design, implement, test, and deploy reliable web APIs and interactive UIs, collaborate in agile teams, use data and AI tools thoughtfully, and own feature outcomes and operational quality.

The Technical Lead manages engineers, defines technical requirements, oversees delivery outcomes, ensures platform health, and improves engineering practices while collaborating with stakeholders.

Join a product engineering team building a large-scale Cyber Risk Posture Management platform. Deliver customer-facing features end-to-end, improve system reliability, scalability, and performance, contribute to architecture and code reviews, and collaborate with cross-functional teams while exploring AI/LLM enhancements.

Entry-level mobile engineer role contributing to Android/iOS hybrid apps and frameworks. Develop, test, and optimize production mobile code (Kotlin/Java, JavaScript/TypeScript, QuickJS), collaborate with UI/UX, use profiling and AI-assisted debugging, write documentation, and support deployments under senior mentorship.

Build and optimize high-traffic, responsive web applications and hybrid in-app pages. Implement user-facing features, improve performance and scalability, and create libraries/frameworks to accelerate development and enhance code quality.

Design, build, and maintain customer-facing web applications across frontend and backend. Collaborate in agile teams, balance speed and quality, use data and AI tools to inform development, own features end-to-end, and improve system reliability and performance.