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.

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.

Provides technical support for SharePoint, Microsoft 365, Office, Teams, OneDrive, Exchange Online, and Copilot. Responsibilities include investigating and resolving complex customer issues, troubleshooting identity, permissions, licensing, performance, and configuration problems, meeting support SLAs, documenting resolutions, escalating defects, and collaborating with engineering teams. The role also contributes to automation, readiness programs, mentoring, product improvements, and secure AI and Microsoft 365 configuration practices. Flexible evening and weekend shifts may be required.

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.

Own AI model development for a product area from user research and data preparation through fine-tuning, evaluation, deployment, and continuous improvement. Responsibilities include optimizing chat, image, video, voice, and real-time AI models for quality, latency, and cost at significant scale. The role requires strong product judgment, end-to-end ownership, experimentation, clear communication, and comfort working directly with founders in a fast-paced, in-person environment.

Own an AI product area end to end, from understanding user needs and building frontend and backend features to deploying and optimizing GPU workloads. Responsibilities include designing long-term memory, recommendation feeds, model evaluation and serving, and real-time chat, voice, image, and video experiences. The role requires accountability for product outcomes, reliability, cost, scale, experimentation, and on-call support.

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.

Leads the technical architecture and hands-on full-stack engineering for Nine’s AI-powered digital archive products. Designs scalable cloud-native applications, data pipelines, integrations, and secure high-availability systems. Establishes CI/CD and infrastructure standards, mentors engineers, manages technical roadmaps, coordinates reliability and on-call practices, and serves as the escalation point for complex technical issues and stakeholder collaboration.

Design, build, test, document, and maintain secure, scalable software components and APIs for digital identity verification. Work across the full software development lifecycle, contribute to application architecture, maintain automated tests, support CI/CD and infrastructure automation, use AI development tools, and collaborate with product, security, QA, operations, and customers to deliver reliable solutions and resolve integration issues.

Build and deploy customer-facing AI-powered solutions for LogicMonitor Edwin AI. Develop backend services, integrations, automations, and lightweight frontend experiences using Python, Java, JavaScript, TypeScript, and React. Implement APIs, telemetry pipelines, dashboards, cloud deployments, and observability workflows. Support prototypes, production rollouts, troubleshooting, and customer adoption while contributing reusable engineering patterns and product feedback.

Design, build, and operate production conversational AI and generative AI features, including intelligent agents, AI coaching, and real-time Copilot experiences. Develop React frontends, Node.js/TypeScript and Java backend services, API integrations, and WebSocket functionality. Implement AI evaluation, testing, monitoring, guardrails, latency measurement, and prompt regression testing. Collaborate with product, architecture, UX, and platform teams to deliver secure enterprise-scale solutions.

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.

Develop full-stack product features using Java and React, build microservices and micro-frontends, and contribute to Kubernetes, cloud, DevOps, testing, security, performance, reliability, and production support. Collaborate with global cross-functional teams throughout the software development lifecycle while using modern delivery practices and AI-assisted development tools.

Lead a team of eight frontend and backend engineers building engagement, billing, invoicing, payments, and collections capabilities. Responsibilities include hiring and developing engineers, improving technical quality and delivery speed, guiding architecture and migrations, owning reliability and observability, and partnering with Product and technical leaders. The role requires strong distributed-systems knowledge, data-integrity expertise, and effective communication across globally distributed teams.

Design, build, and maintain scalable software for Domain’s commercial real estate platform. The role involves developing production-grade applications and services, contributing to architecture and technical direction, improving performance and reliability, delivering tested features, and mentoring engineers. The engineer will collaborate with Product, Design, and Engineering teams while working primarily with .NET/C#, AWS, React, Next.js, TypeScript, relational databases, and distributed systems.

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.

Own Linktree’s authentication and identity platform across signup, login, social authentication, account recovery, MFA, sessions, tokens, APIs, and business-account access. Build full-stack features with TypeScript, Node.js, React, GraphQL, databases, and AWS. Improve security, observability, rollout safety, and login conversion while partnering with Product, Security, and platform teams. Mentor engineers and use AI-assisted development to accelerate migrations, testing, and investigations.

Build and maintain backend and frontend platforms supporting customer identity, engagement, billing, and subscriptions across Nine’s digital products. Deliver sprint work, contribute to solution design, improve engineering practices and tools, collaborate with cross-functional teams, communicate technical decisions, and resolve complex platform issues.

Develop and support enterprise IBM FileNet, Case Manager, and BAW solutions. Responsibilities include configuring case workflows, developing integrations and custom components, customizing IBM Content Navigator, managing deployments and migrations, troubleshooting production issues, optimizing performance, creating technical documentation, and participating in Agile ceremonies and code reviews.

Own full-stack product features from problem definition through production using Elixir/Phoenix backend services and React/TypeScript interfaces. Establish engineering quality standards, design shared foundations, make squad-level architectural decisions, mentor engineers, and validate post-launch outcomes. Work on data-intensive, real-time logistics applications involving distributed systems, performance, observability, and event-driven workflows. Use coding agents, agentic prompting, and MCP tooling responsibly across the software development lifecycle.

Own backend-heavy full-stack product surfaces from architecture through production operation. Responsibilities include building AI-powered answer experiences, identity and billing systems, APIs, integrations, and workflow features; managing observability, performance, incident response, and iteration based on user feedback. The role requires strong ownership, high agency, trade-off reasoning, AI tooling familiarity, and experience operating robust systems in production.