Top Full Stack Developer 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.

Develop and maintain enterprise-grade C# and .NET applications, RESTful APIs, event-driven microservices, and distributed systems on AWS. Design PostgreSQL schemas, optimize queries, and support high-volume workloads across the full software development lifecycle. Collaborate with product owners and architects while meeting compliance, security, resiliency, and service-level requirements. Use and evaluate AI-assisted development tools responsibly for coding, testing, refactoring, documentation, and automation.

Develop scalable full-stack software through hands-on coding, testing, debugging, and troubleshooting. Lead technical discussions, independently deliver medium-sized projects, improve engineering practices, and mentor junior engineers. Collaborate with product managers, stakeholders, and engineering teams while contributing to architecture, maintainability, and company objectives. The role primarily emphasizes backend development using Node.js, microservices, cloud services, CI/CD, TypeScript, GraphQL, WebSockets, Pub/Sub, PostgreSQL, and Elasticsearch, with frontend experience preferred.

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 and maintain platform products, internal tools, and shared services across the stack. Develop frontends, backend services, APIs, CI/CD pipelines, observability, testing, and integrations. Collaborate on secure, scalable designs, support incidents, contribute documentation, and improve developer experience and platform consistency.

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.

Design, build and maintain full-stack features and services with end-to-end technical ownership. Apply strong engineering practices (testing, code review, CI/CD), collaborate with stakeholders and squad members, and adopt AI-assisted tooling to solve complex product problems for Checkout AI.

Own the end-to-end design, development, and production delivery of full-stack digital and AI solutions. Build front-end, back-end, data, integration, and LLM capabilities while ensuring governance, privacy, safety, and clinical standards. Provide hands-on technical leadership, shape ambiguous problems into scalable products, coordinate stakeholders, and support production systems. The role requires advanced Python, React, TypeScript, APIs, microservices, data pipelines, AI workflows, and experience taking AI solutions from prototype to production.

Build and operate scalable, low-latency APIs, event-driven services, integrations, and web applications supporting membership and loyalty experiences. Integrate and extend Antavo with commerce, CRM, CDP, marketing, and data platforms. Apply distributed-systems, reliability, observability, and security practices; troubleshoot production issues; contribute to reusable engineering assets; and mentor junior engineers.

Design, develop, test, and maintain full-stack features using React and Node.js. Architect reliable, scalable microservices, integrate AI capabilities such as LLMs, RAG pipelines, and agents, and collaborate with product, design, and data teams. Contribute to technical roadmaps, code reviews, testing, security, and engineering best practices while mentoring mid-level engineers and improving customer experiences.

Develop full-stack web interfaces and backend architecture for neurotechnology applications; implement neural signal processing pipelines (EEG), integrate machine learning models for neurophysiological data analysis, maintain acquisition/processing software, participate in code reviews, document technical processes, and work independently within a small, research-driven startup.

Design, build, integrate, and deploy secure, scalable CIAM solutions for high-volume digital channels. Develop Java or Node.js APIs and microservices, implement OAuth 2.0, OIDC, SAML, SSO, MFA, and passwordless authentication, and integrate identity verification and fraud detection. Maintain CI/CD pipelines, automated testing, secure coding practices, and production identity services while collaborating with architects and digital product teams.

The Full Stack Software Engineer will develop, integrate, and deploy AI technologies, focusing on building scalable web applications and ensuring a great user experience.

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.

As a Full Stack Developer, you will manage end-to-end delivery of projects, participating in agile sprints, and developing features using a diverse technology stack. You will ensure technical quality, collaborate with stakeholders, and support client engagements.

The Senior Full Stack Engineer will design and operate scalable services and APIs for an AI compliance platform, making high-impact technical decisions and influencing engineering culture.

The Senior Full Stack Engineer will design, architect, and build integrations for enterprise compliance platforms, ensuring the integration layer connects seamlessly with tools like Salesforce and Microsoft. Responsibilities include making technical decisions, implementing APIs, and contributing to engineering culture as the team grows.

Own end-to-end delivery of AI-enabled products from proof of concept through production. Design and connect backend, data, and frontend systems; solve ambiguous client problems; lead workshops and technical discussions; and make pragmatic trade-offs while iterating based on user feedback. The role requires approximately 5–8+ years of product or systems engineering experience, strong AI delivery experience, full-stack capability, client communication skills, and senior-level autonomy.

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.

Join a small cross-functional product engineering team building Clipboard. Deliver well-scoped features from ticket to production, write and review tested code, use feature flags for incremental delivery, document decisions, work with AI tooling, participate in code reviews, and help triage production issues with support.

Design and maintain Binance's login, registration, and account-security experiences across web and mobile. Build an in-house AI facial-recognition KYC product, integrate authentication flows (passkeys/FIDO2, MFA), develop Node.js server-side and BFF layers, publish shared SDKs, optimize performance and observability, and drive product improvements using data.

Build responsive web applications and scalable frontend/backend services, design secure APIs and databases, implement AI-powered search and asset management features, collaborate on system architecture, and optimize performance and UX for a cloud-native DAM platform.

Join a small team to improve a tech product aimed at upskilling users in MENA, working with JavaScript and Node.js in a collaborative remote environment.

Design, develop, and maintain scalable web applications using .NET backend and Angular/React frontend. Collaborate on requirements, implement RESTful APIs, optimize performance, debug, maintain documentation, support end-users, and work within CI/CD and DevOps workflows.

Join Freelancer as a Full-Stack Software Engineer to tackle diverse engineering challenges across a global platform while building your skills in a meritocratic environment.