Top Software Engineer Jobs in Sydney

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

As a Software Engineer, you'll enhance AMP Investments' tech platforms by developing scalable solutions, improving system performance, and driving continuous improvement with a focus on collaborative problem-solving and new technology adoption.

The C# Software Engineer will design and build high-performance Windows desktop applications, collaborate with teams to meet user needs, and enhance usability and performance.

The Software Engineer II will design, build, and deliver data-driven systems for digital advertising, working in a collaborative team to implement scalable technology solutions.

Design, deploy, and maintain secure, scalable AWS and Kubernetes-based cloud environments using IaC and CI/CD. Automate provisioning, implement observability, troubleshoot containerized workloads, and work directly with enterprise customers to deliver production-grade solutions and improve operational practices.

The Software Engineer will design, develop, and maintain backend services, focusing on APIs and collaborating with cross-functional teams to enhance user experiences and meet product objectives.

Build and ship end-to-end full-stack features for the Learning Portal. Architect scalable systems, maintain cloud infrastructure (IaC), implement testing and CI/CD, perform PR reviews, be on-call, and drive product-quality improvements across frontend and backend services.

The role involves building and maintaining the front-end checkout experience on the BigCommerce platform using React and TypeScript, collaborating with teams for performance and security, and mentoring junior engineers.

Lead design and build of internal AI tooling and automation to improve security operations. Develop ad-hoc incident response and threat-hunting tools, maintain Kubernetes, serverless, and ETL/data pipelines, and partner with product teams to automate patching and risk-mitigation services. Own large-scale log pipelines, mentor junior engineers, and deliver high-quality projects autonomously.

Lead development of internal AI-driven security tools and automation, support incident response with threat-hunting and remediation tooling, maintain Kubernetes/serverless infrastructure and large-scale log/ETL pipelines, identify automation opportunities with engineering teams, drive security outcomes (patching, gateways), and mentor junior engineers.

Design and build high-integrity backend systems for the Yield investment product. Own end-to-end delivery of investment workflows, maintain financial infrastructure (reconciliation, ledgers, registries), ensure reliability and observability, integrate with external investment providers, and promote engineering best practices.

Join a founding engineering team building a psychosocial safety platform. Work full-stack (SvelteKit frontend, Go backend, Postgres), deliver end-to-end features, improve UX, implement design system components, integrate third-party services, fix bugs from customer feedback, and ensure quality and ownership throughout the development lifecycle.

Build end-to-end full-stack systems (quoting, onboarding, installer tools, energy OS including billing, battery optimisation, trading & risk), integrate multiple APIs, work with high-volume time-series data, and leverage AI tooling and agent orchestration to deliver scalable, secure systems while collaborating with energy and product specialists.

Develop, maintain and support a modular satellite imagery platform. Extend and implement APIs, server-side rendered web interfaces, troubleshoot customer deployments, mentor developers, and collaborate with multidisciplinary teams to design and deliver new platform features and improvements for earth observation operations.

Software Engineers at Citadel develop, maintain, and support high-performance trading platforms, focusing on custom software solutions and system stability.

Design, develop, and maintain Azure and .NET integration solutions, including AI-enabled automation. Participate across the full software development lifecycle, support cloud applications, implement CI/CD and DevOps practices, produce technical documentation, and collaborate with stakeholders to translate business requirements into practical solutions.

Design and build backend microservices for real-time fraud detection, transaction monitoring, and risk analysis. Integrate ML models and risk scoring engines, support scalable distributed systems, and leverage AI-assisted development and LLM/agent tools for risk automation.

Join a product engineering team building a large-scale Cyber Risk Posture Management platform. Deliver customer-facing features end-to-end, improve system reliability, scalability, and performance, contribute to architecture and code reviews, and collaborate with cross-functional teams while exploring AI/LLM enhancements.

Build and improve core trading platforms and research infrastructure, collaborate with quantitative researchers and technologists, enhance scalability and performance of production systems, and increase team productivity as business expands into new markets.

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.

Design, develop, customize and integrate Microsoft Dynamics 365 CRM/CE solutions. Build entities, forms, workflows, plugins, reports and dashboards using CRM SDK, C#, JavaScript, ASP.NET and SQL. Troubleshoot issues, estimate implementation approaches, collaborate with stakeholders, document solutions, and mentor junior developers. Banking domain experience preferred.

Design and lead frontend architecture and development for scalable, secure web UIs that integrate with embedded systems and cloud platforms. Build device provisioning, telemetry visualization, and remote management interfaces; optimize performance and accessibility; mentor engineers; collaborate across backend, hardware, and systems teams to deliver end-to-end solutions.

Design and develop scalable, secure frontend web applications for connected embedded systems. Lead frontend architecture, collaborate with backend/embedded teams, implement device provisioning, telemetry visualization, and remote management UIs. Optimize performance, accessibility, and maintainability; mentor engineers, participate in reviews, and drive frontend best practices.

Build and maintain full-stack Splunk applications and services that size cloud infrastructures. Lead UI improvements with React, develop backend services and APIs, design microservices, work with cloud (AWS/GCP/Azure), Docker, and Kubernetes, participate in on-call rotations, and collaborate on design and process improvements to improve team productivity and customer outcomes.

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.