Top React Jobs in Sydney

Customer-facing engineering role building and deploying AI-powered observability solutions. Ship backend and full-stack integrations, instrument telemetry, configure cloud/kubernetes deployments, and convert field learnings into reusable artifacts and product feedback.

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.

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.

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.

Lead Android architecture and infrastructure for Binance mobile apps: design, build, optimize, and maintain high-performance Kotlin/Java applications, create shared libraries and toolchains, collaborate on hybrid JavaScript runtimes, and use profiling and AI-assisted debugging to troubleshoot and improve app performance.

Design, build and scale production-ready AI capabilities and applications using Python and modern cloud tech. Collaborate with cross-functional teams to deliver secure, observable, and responsible AI solutions, mentor engineers, drive architecture decisions, and ensure operational excellence across AI platforms.

First dedicated site reliability engineer responsible for owning reliability, observability, incident response, and platform decisions. Projects include improving uptime and RTO, hardening GPU clusters, implementing metrics/tracing/alerting and SLOs, and optimizing AWS infrastructure and cloud spend while enabling CI/CD and deployment pipelines.

Build a 0->1 full-stack marketplace and B2B SaaS platform. Own features end-to-end across frontend and backend, design multi-tenant architecture, integrate external APIs and payments, contribute to architecture, mentor juniors, and ensure observability and scalable infrastructure.

As Lead Software Engineer, you'll guide front-end development, implement AI-driven practices, deliver high-quality applications, and mentor engineers.

Design, build, and operate large-scale, multi‑tenant search systems; own search relevance and retrieval quality; lead architecture for indexing, hybrid lexical+semantic retrieval, embeddings and ranking; integrate retrieval with LLMs/RAG; ensure performance, observability, and cost at scale; provide technical leadership, mentor peers, and deliver search features end-to-end with Product and Design.

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.

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.

Build and own a frontend telemetry SDK used across the company: design APIs, instrument browser performance and AI-native experiences, dive into browser internals, drive adoption, collaborate with frontend, backend and data teams, and lead by shipping production-quality code.

Develop and maintain server-side logic using PHP and Craft CMS, support frontend integration, manage databases, and ensure application performance.

Lead design and development of high-performance, accessible user interfaces using modern frontend frameworks. Collaborate with product, design, and engineering to scope and deliver product features, evolve shared component libraries and design systems, write well-tested code, mentor peers, and champion performance and accessibility.

Lead the architecture and delivery of a large-scale hybrid mobile platform using React and React Native. Ship production code, mentor senior engineers, drive cross-team adoption, and ensure native performance across iOS and Android while evolving runtime, libraries, observability, and CI/CD for mobile at scale.

As a Founding Engineer, you'll own core product and infrastructure decisions, building scalable software and transformative AI solutions for millions of users.

Assist in designing, developing, and testing software applications while collaborating with senior developers on various projects. Gain hands-on experience in software development and exposure to programming languages and tools.

As a Senior Technical Consultant, you will assist in application development projects, work with clients on AI, and utilize .NET on Azure along with React/Angular.

Join Elafent as a Graduate Software Engineer to create scalable and elegant software for our cloud SaaS platform. Work on various development areas, collaborate with a proactive team, and enjoy a healthy work/life balance.