Top Software Engineer Jobs in Sydney

Design and build scalable, reliable backend services in Java; collaborate with PMs, designers, and frontend engineers to deliver features end-to-end; improve architecture, performance, observability, and incident resilience; write well-tested production code; lead design and code reviews, mentor peers, and participate in on-call rotations.

Design, build, and maintain scalable web experiences and backend services for the OpenTTD integration portal. Work across React frontends, REST/GraphQL APIs, and backend services (C# or similar). Own features end-to-end, collaborate with product and UX, drive technical quality through design and code reviews, and evolve platform architecture to support new personas and integrations.

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.

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.

Lead design and implementation of scalable, low-latency backend systems powering AI-driven ad and content generation. Productionise image/video generation models, build data ingestion and normalization pipelines for ad and ecommerce platforms, optimise orchestration and inference performance, and create reusable frameworks for LLM agents, prompt management, and async job orchestration while mentoring engineers and driving cross-team architecture and operational excellence.

The Solutions Engineer will support the integration of Near Intents, assist developers, enhance product stability, and provide technical support to ecosystem partners.

As a Senior Software Engineer at Fetch, you'll build AI-driven products to improve pet health, mentor engineers, and develop event-driven architectures. You'll collaborate with teams to deliver impactful features and ensure reliability and observability in the systems you create.

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 ship AI-first customer support software end-to-end. Own production features, integrate and work with coding agents, design tooling and feedback systems, and shape UI/UX and data models. Collaborate across a small, high-calibre team to solve large-scale support problems for fintech, healthtech, and marketplace customers.

Lead and grow a software engineering team focused on RISC-V software ecosystem, collaborating with teams to establish RISC-V as the standard.

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.

The Senior Software Engineer will build APIs and tools, improve production systems, reduce technical debt, mentor others, and work on both backend and frontend code.

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

Own end-to-end feature delivery across a TypeScript/Next.js and Node/Supabase stack. Lead design, architecture, and cross-team initiatives; write design docs; review code; mentor engineers; manage operational health, compliance, and quality for healthcare prescription workflows across multiple jurisdictions.

Join the Core Applications team to build core platform systems, modernize authentication, handle large-scale data ingestion and petabyte datasets, and deliver features for major clients. Influence platform architecture, work across backend, frontend, infrastructure and developer tooling, and lead cross-functional projects with a focus on scalable, maintainable solutions and high-quality delivery.

The role involves collaborating with product teams to optimize functionality and ship cloud services using Kotlin, enhancing user experience through reliable APIs and systems.

Lead design and development of native Windows desktop applications. Ensure best practices in architecture, performance, and accessibility. Collaborate with teams through the feature lifecycle, resolving complex issues, and maintaining high-quality standards.

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.

As a Senior Software Engineer, you will develop and maintain Alpaca's platform services, including event streaming infrastructure and authentication systems, while ensuring software quality and reliability.

The Senior Software Engineer will lead a software team, ensuring quality code production, mentoring engineers, and developing customer-focused software solutions.

Design and implement end-to-end infrastructure projects, build developer-facing tools and automation (self-service platforms, CLIs, CI/CD), improve observability, collaborate with engineering teams, mentor juniors, and participate in on-call rotation for critical platform services.

Design, build and improve observability platforms, pipelines, and tooling. Provide technical leadership, prototype and optimise metrics and continuous profiling systems, improve querying/visualisation UX, evangelise observability best practices, and collaborate cross-functionally to ensure reliable, scalable monitoring and insights for Canva engineers.

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.