Top React Jobs in Sydney

Build and operate infrastructure for evaluating coding agents and language models. Own end-to-end features across data models, APIs, background workers, and user interfaces; run sandboxed agent trials; develop scoring and task-quality systems; integrate models and benchmarks; optimize performance, concurrency, migrations, and reliability; and review code. The role requires independent ownership of production backend systems and hands-on LLM evaluation experience.

Build and own patient-facing platform components across the full stack. Lead complex technical initiatives, make data-informed architectural decisions, and deliver reliable capabilities from design through production. Collaborate with Product, Design, and Data, contribute to AI tooling, and improve testing, deployment, monitoring, and engineering standards. The role requires strong React and Next.js expertise, backend experience, AWS production operations, distributed systems knowledge, and event-driven architecture experience.

Principal Engineer responsible for architecting, building, testing, and supporting a customer-facing CRM platform. Leads peer engineers, drives technical decisions, delivers greenfield solutions, improves CI/CD throughput, and collaborates with product, UX, marketing, customers, and integration partners. The role involves full-stack development, cloud services, mixed datastores, API design, platform stability, and continuous delivery within a distributed, collaborative team.

Design, develop, test, document, modernize, maintain, and support full-stack applications using the Microsoft .NET and C# stack. Build modern user interfaces, work with varied databases and architectures, and use cloud, containerization, and CI/CD practices. Collaborate with stakeholders, troubleshoot issues, shape architecture, improve development practices, mentor colleagues, and provide technical leadership across the software development lifecycle.

Build full-stack features, APIs, backend services, and frontend experiences for an AI legal risk management platform. Develop and structure risk insights delivered through MCP, integrate with LEAP’s AI ecosystem, and prototype LLM-powered capabilities. Contribute to architecture, reliability, observability, performance, and end-to-end feature delivery while collaborating closely with a startup-style team.

Build and scale an enterprise AI Workspace through responsive React applications, Node.js and Python backend services, Azure deployment, enterprise authentication, AI integrations, and secure CI/CD practices. Create Power BI dashboards, data models, DAX measures, and Power Query transformations, while integrating reports with enterprise applications. Collaborate in Agile, DevOps-oriented global teams to deliver scalable, maintainable software and actionable business intelligence.

Develop production-quality full-stack and integration solutions using C# .NET, TypeScript, Node.js, React, Next.js, React Native, and Tailwind CSS. Design REST APIs, build backend services and user interfaces, apply unit testing and hexagonal architecture, and contribute to AI-assisted or agent-based development approaches. AWS development, Git, dependency injection, and relevant education or certifications are advantageous.

Build and maintain scalable full-stack healthcare products across frontend and backend systems. Lead projects through discovery, design, architecture, implementation, deployment, and monitoring. Collaborate with product and care teams, contribute to technical scoping, modernize legacy systems, develop microservices, and improve developer tooling using React, TypeScript, Node.js, Go, GraphQL, PostgreSQL, and GCP Kubernetes.

Own and ship end-to-end product surfaces using Next.js/TypeScript and FastAPI/Python. Raise frontend quality, optimize performance for data-dense UIs (3D playback, time-series, maps), build mobile-friendly dashboards, and implement backend APIs, data models, and jobs. Iterate quickly with customers and own outcomes.

Build scalable backend services, APIs, microservices, and event-driven solutions supporting personalization, recommendations, search, and AI-driven consumer experiences. Integrate AI/ML capabilities, develop React components, implement search using Elasticsearch or OpenSearch, and work with Kafka, databases, Redis, and cloud-native architectures. Ensure systems are secure, observable, resilient, and low latency while collaborating with AI/ML, data, and engineering teams.

Design, build, and maintain full-stack web applications supporting AI-driven product discovery, search, recommendations, personalization, and consumer experiences. Lead frontend technical design, develop React and TypeScript components, integrate backend APIs and AI capabilities, optimize performance and reliability, and contribute to backend services. Mentor engineers, participate in technical reviews, and collaborate with product, design, data, AI, and engineering teams.

Build and enhance full-stack, consumer-facing web applications for AI-driven product discovery, search, recommendations, and personalization. Develop reusable React components, integrate APIs and microservices, support backend services, and work with AI/ML and data teams. Contribute to scalable, secure, observable, and reliable solutions using search platforms, cloud services, databases, caching, and event-driven architectures. Collaborate cross-functionally with engineering, product, and design teams to deliver engaging digital experiences.

Build and enhance consumer-facing full-stack web applications for AI-driven product discovery, search, recommendations, and personalization. Develop React and TypeScript interfaces, integrate APIs and microservices, contribute to Java and Spring Boot backend services, and improve performance, accessibility, scalability, reliability, and observability. Collaborate with AI/ML, data, backend, product, and design teams while participating in design and code reviews and using AI-assisted engineering tools.

Build, enhance, support, and troubleshoot Java applications using Spring Boot, React.js, AWS, Linux, microservices, APIs, and modern web technologies. Responsibilities include application design, development, cloud deployment, production monitoring, performance tuning, architecture contributions, documentation, stakeholder collaboration, and rotational after-hours support. The role also provides occasional support for legacy Struts and JSP applications.

Own DISCO’s end-to-end security program across application security, AWS infrastructure, identity and access, detection and incident response, compliance, and risk. Lead threat modeling, secure architecture reviews, vulnerability remediation, penetration testing, security baselines, monitoring, incident investigations, SOC 2 activities, and security roadmap development. The role partners with engineering, product, legal, and leadership while mentoring staff and strengthening security culture in a remote SaaS environment.

Build and evolve payer-facing experiences supporting online invoicing, payment processing, and money movement workflows. Collaborate with developers, product managers, and UX designers to deliver secure, reliable customer experiences. Contribute to DevOps improvements, Agile delivery, technical vision, knowledge sharing, and high-quality software development using modern programming languages, cloud platforms, containers, and CI/CD tools.

Build full-stack customer onboarding and verification solutions for MYOB’s payment products. Develop KYC, KYB, risk assessment, approval, and operational review workflows; integrate activation, invoicing, and payment services; and contribute to the Azure migration. Improve engineering quality through automated testing, TDD, and CI/CD while supporting technical direction, mentoring, pairing, and code reviews. The role requires collaboration across engineering, product, and operations teams and includes exploring AI-assisted development practices.

Lead the evolution of a multi-brand design system across responsive web and React Native applications. Build WCAG-compliant components using React, Tailwind CSS, and shadcn/ui; manage design tokens; create AI-assisted code prototypes; collaborate with engineers through Git workflows; and facilitate workshops with product and delivery stakeholders.

Design and develop customer-facing web and mobile solutions using JavaScript, React, and Guidewire’s Jutro design system. Lead architecture for single-page applications and digital services, collaborate with UX and cross-functional teams, support AngularJS-to-React migrations, apply automated testing and server-side technologies, mentor development teams, and participate in client implementation projects requiring onsite travel.

Build and maintain full-stack web products across frontend, backend, databases, DevOps, analytics, and third-party integrations. The engineer will implement features, fix bugs, improve infrastructure, monitoring, deployments, testing, and developer experience, and participate in on-call support. The role requires collaboration with product teams, proactive technical ownership, reliable production code, analytics-informed iteration, and fluency with AI coding tools. Senior candidates may additionally own architecture, technical strategy, and major projects.

Build and maintain AI-powered applications, agentic systems, intelligent workflows, and supporting services. Develop full-stack solutions with TypeScript, Node.js, React, AWS, databases, and event-driven technologies. Contribute to architecture, testing, deployment, debugging, code reviews, and production improvements while collaborating with product and engineering teams. The role emphasizes practical AI implementation, ownership, iterative delivery, and emerging AI technologies.

Leads the API and frontend engineering teams building Keet, a peer-to-peer messaging and video-calling app. Owns technical design, API architecture, performance, reliability, engineering standards, team delivery, and leadership development. Partners with product managers to scope and prioritize features, challenge assumptions, and translate product vision into buildable work. Requires strong product judgment, JavaScript and React expertise, and familiarity with distributed or local-first systems.

Build and maintain greenfield full-stack web applications for legal practice management software. Responsibilities include frontend development with React, backend API and service development, scalability, secure authentication, code refactoring and debugging, architecture decisions, automated testing, and improving software delivery practices. The role collaborates with product owners, legal experts, and client operations throughout the software development lifecycle.

Build and ship trustworthy AI product features for Neara’s utility digital-twin platform. The role focuses on LLMs, agents, retrieval, tool use, evaluation, observability, guardrails, and human-in-the-loop workflows grounded in simulation and network data. You will work directly with utility customers, product and engineering teams to deliver production systems, establish AI development standards, and ensure outputs are traceable, safe, and engineering-grade.

Build end-to-end analytics experiences for Linktree creators, spanning event instrumentation, ingestion, aggregation, GraphQL APIs, React interfaces, and social platform integrations. Improve data quality, attribution, reliability, performance, and observability while incorporating AI into development and product features. Partner with product, design, and data teams to prioritize metrics and mentor peers.