Top React Jobs in Sydney

Build scalable backend and frontend services for MongoDB’s application modernization platform. Develop APIs, data pipelines, code analysis tools, dependency graphs, and schema recommendation features. Collaborate with product, engineering, and design teams; contribute to architecture, testing, CI/CD, code reviews, troubleshooting, and technical documentation. Senior engineers will mentor teammates, lead complex feature design, and support recruiting and interviewing.

Support Vercel customers by resolving technical issues, handling community and enterprise requests, developing internal tools, completing engineering work, and improving documentation and processes. The role specializes in a product area, investigates root causes, and partners with engineering and customer success teams. It requires frontend development knowledge, cloud and serverless expertise, strong communication, technical writing, and availability for weekend and on-call rotations.

Design, build, test, and maintain full-stack features and services for Quantium’s Checkout AI product roadmap. Own components end to end, apply strong engineering and quality practices, collaborate with engineers and stakeholders, and solve complex technical problems. The role is backend-leaning, using Python and React, with an expectation of openness to AI-assisted development tools and practices.

Develops end-to-end full-stack features for the Customer Experience team. Owns complex frontend and backend initiatives, shapes service architecture, establishes engineering standards, improves reliability and efficiency, and collaborates with product, business, and customer stakeholders. Requires strong TypeScript, React, Node.js or NestJS, web architecture, API, database, microservices, DevOps, and cloud deployment expertise.

Build and maintain A/B and multivariate experiments in React, Next.js, and TypeScript. Configure experimentation platforms, feature flags, targeting, rollouts, and cleanup. Collaborate with data analysts to ensure accurate measurement, maintain performance and accessibility, and write automated tests. Help establish experimentation processes, identify future testing opportunities, and promote successful variants into production-quality code.

Build and own the cloud and edge platform connecting autonomous drones, docks, and customers. Responsibilities include AWS infrastructure as code, backend and desktop applications, offline-first synchronization, OTA fleet updates, CI/CD, monitoring, alerting, video streaming, and reliable networking across remote cattle stations. The role is hands-on, Sydney-based five days per week, with regular domestic and potentially international field deployments.

Build and maintain React and TypeScript operator consoles for AI runtime security products. Review and harden designer-authored code, develop shared design-system components, support data-dense dashboards, integrate GraphQL APIs, and own unit, integration, and end-to-end testing. Ensure accessibility, performance, responsive behavior, theme consistency, and secure live-environment validation. Collaborate across design and backend teams while establishing conventions and guardrails for AI-assisted development.

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.

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 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.

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.

Provides L2/L3 application support for complex web-based and integrated production systems. Investigates incidents and service requests using SQL, logs, APIs, databases, and monitoring tools; manages issues through resolution within SLAs; communicates with clients; performs health checks; coordinates technical escalations; maintains documentation; supports users; and identifies automation and process improvements.

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.