Top Software Engineer Jobs in Sydney

Develop and maintain high-security mobile applications using React Native, Swift, or Kotlin. Implement biometric authentication and secure key storage, collaborate with cross-functional teams to design and deliver features, troubleshoot performance issues, and propose technology improvements to enhance security and user experience.

Develop and optimize Soroban smart contracts on the Stellar network, integrate anchor services for cross-border payments, collaborate with teams, test and debug contracts, document processes, and provide technical support while staying current with blockchain and payments trends.

Implement EVM-compatible features, optimize gas usage, develop and test smart contracts, validate Ethereum infrastructure, provide technical support, and collaborate on Ethereum performance and tooling improvements.

The Senior Software Engineer will enhance the developer experience, drive product development, and lead cloud-native architecture initiatives, collaborating across teams to deliver high-quality software.

The Senior Software Engineer in Test builds and executes automated tests, develops testing tools, and collaborates on technical designs while ensuring system testability for the TraceLink platform.

Lead design, development, and maintenance of scalable SaaS fraud-detection systems. Mentor junior engineers, conduct code reviews, author technical documentation, collaborate cross-functionally, and introduce new tools to improve platform quality and scalability.

Design, implement, test and deploy cloud-based data products and services. Maintain and modernise systems, ensure reliability, security and scalability, build ETL/data pipelines, tune performance, and support production environments.

Design and implement backend systems for user applications and protocol components, ensuring scalability and resilience while mentoring the team.

The Senior Software Engineer will develop and deliver high-quality code for stockbroking platforms, focusing on backend functionalities and integrating APIs while collaborating with stakeholders to align solutions with business objectives.

The Senior Software Engineer will develop and maintain healthcare platforms, mentor engineers, and improve coding standards and workflows.

Develop and enhance features for EnrollWise, contribute to a scalable software architecture, review code, collaborate on design and technical feasibility, and maintain software quality.

The Software Engineer will implement, configure and deliver AI solutions, focusing on integrations and conversational AI across the NICE CXone ecosystem, while ensuring quality and problem-solving in a collaborative environment.

Execute scheduled, ad hoc, and release-milestone software tests; review test cases; report defects in issue-tracking systems; communicate status in standups; and collaborate with software test managers and development teams. The role requires knowledge of QA methodologies, black-box, grey-box, and white-box testing, strong communication and organization, independent and team-based work, and participation in planning and professional meetings.

Build AI-powered client products from discovery through production using full-stack engineering, AI coding tools, prompt and context engineering, and critical validation of generated outputs. Develop frontend and backend features, support testing, QA, DevOps, and CI/CD, while collaborating directly with client engineering, product, and domain teams. Translate ambiguous business needs into production-ready systems, communicate clearly with stakeholders, and contribute to consulting engagements in a hybrid Sydney-based environment.

As a Senior Software Engineer, you'll design and implement features related to digital twins, data abstractions, and structural analysis, leveraging machine learning and algorithms.

As an Applied AI Engineer, you'll build AI agents and experiences from concept to production, collaborating across teams and optimizing systems for usability and quality.

Lead quality strategy and test automation for personalization, recommendation, experimentation and consumer intelligence. Build and maintain automated test frameworks (API, integration, contract, E2E), integrate quality into CI/CD, validate ML-driven outputs and consumer journeys, manage test data/environments, and coach engineers to improve release reliability and engineering quality.

Design, build, and maintain production-grade microservices and web applications to power personalization and recommendations. Implement model-serving and inference integrations, ensure resiliency, observability, and low-latency performance, work with event-driven and caching patterns, collaborate with AI/ML and data teams, drive technical designs, mentor engineers, and operationalize services for production readiness.

Design, develop, test, and deploy networking features for Arista EOS using C/C++ and Python. Write specs, automated tests, and work with product, customers, and support to triage and resolve complex network issues. Provide technical leadership and mentor junior engineers while owning features end-to-end.

Build and scale the internal developer platform: create tools, services and automation (CI/CD, canaries, feature flags, access workflows) using IaC (Pulumi/Python) and Kubernetes to enable safe, fast shipping. Drive platform initiatives, mentor teams, lead AI tool adoption for engineering, participate in on-call and design/code reviews, and ship major improvements across the organization.

Design, build, and operate resilient, secure, cost-efficient cloud backend services for conversational search and content intelligence. Own distributed systems, CI/CD, DevSecOps, FinOps, and integrate Generative AI/RAG workflows (e.g., AWS Bedrock) using Node.js/TypeScript on AWS.

Design and develop complex software solutions for a banking platform, leading engineering efforts, and mentoring team members in a high-impact role.

Senior forward-deployed engineer who leads end-to-end delivery of AI-first, full-stack solutions for enterprise clients. Own discovery through production, embed with client teams, apply Gen-e2 AI-native engineering practices, use LLMs and AI coding tools daily, and modernize .NET applications while ensuring architecture, adoption, and measurable impact.

Design, prototype, and implement scalable 3D CAD/CAM software and algorithms for medical device mass production. Collaborate across manufacturing, product, and QA teams to define requirements, draft architecture, optimize processes (including 3D printing and laser workflows), and mentor junior engineers throughout the full software lifecycle.

Lead architecture and technical strategy for a data interoperability connector platform and SDK. Write production code, drive cross-team technical decisions, improve developer productivity, ensure reliability, lead incidents, act as Product Owner when needed, and mentor technical leaders across the domain.