senior java backend developer jobs in Sydney

About Upsun (formerly ) Upsun is the software factory for AI-human workflows. It is built for today’s hybrid teams, where AI agents write and test code and humans focus on solving the problems that really matter. Developers, DevOps engineers, and platform teams use Upsun to build, ship, and scale confidently without wrestling with backend infrastructure....

About the job Senior Backend Software Engineer This is a 12 month contract opportunity for an experienced Backend Engineer to join a major Australian Bank, locatin in Sydney's CBD. Duration: 12 months Location: Sydney NSW Start: Immediate Were interested in hearing from people who have: Technical skills spanning the full stack, with an emphasis on the...

Senior Java Engineer | $175k - $205k + Super + Bonus | $900 - $1,050/day Sydney - Hybrid | Java Springboot AWS There's a reason Australia's biggest banks keep building. The economy doesn't stop, and neither do their engineering teams. We're working with one of Australia's most recognised financial institutions on a Senior Java Engineer hire inside their Core...

Create your best future and join Westpac as a Senior Full stack Engineer (Backend focused) What’s the Role: Join our Cash & Transactional banking Technology team as a Senior Fullstack Engineer. The Cash & Transactional banking team works with the business team in transforming the business vision into reality by planning and delivering the projects along...

About the Job:As a Senior Solutions Engineer, you will be the technical partner to Account Executives, helping LaunchDarkly land and expand enterprise customers across the ANZ MarketYou will guide technical discovery, deliver compelling demonstrations, lead proof-of-value engagements, and help customers understand how LaunchDarkly enables safer, faster...

OverviewWe’re looking for an experienced AWS Apache Flink Developer to join a high-impact project in Sydney. If you’re passionate about real-time data streaming and thrive in collaborative, problem-solving environments, this could be the role for you.ResponsibilitiesDesign, develop, and maintain Flink applications in Java for real-time stream...

Company Description Nine is Australia’s largest locally owned media company. Working at Nine, you’ll have access to a unique range of experiences and opportunities, helping drive the success of the country’s most trusted television, radio, digital and publishing brands. Our content reaches almost every Australian - meaning what we do has real impact....

Are you a senior full-stack engineer who enjoys learning and solving challenging problems? Would you like to do this using the latest cloud computing, GenAI, and agentic technologies? We are seeking a hands-on Senior Delivery Consultant with software engineering and cloud architecture expertise to deliver consulting engagements within AWS Professional...

XPT Software Australia Pty Ltd | ContractKafka DeveloperSydney, Australia | Posted on 09/15/2026XPT SoftwareAustralia PTY Ltd, incorporated in 2016, is a Software Services companyXPT works with topclients across Australia in Banking, Insurance, Telecom,Retail, Energy, Mining and Manufacturingdomains.We have 120+technocrats in Australia working at our...

Help us use technology to make a big green dent in the universe!Kraken powers some of the most innovative global developments in energy.We create the technology that redefines utilities and unlocks a new energy system of the future. By optimising renewable generation, building a more intelligent grid, and empowering utilities to deliver an exceptional...

Permanent, full-time | Remote within Australia | Senior hands-on role An established Australian software business is looking for a Senior Software Engineer to help guide the next stage of its platform. You’ll work directly with the CTO and remain close to the code, while also having a say in architecture, technical decisions and how the engineering team...

Create your best future and join Westpac as a Senior Full Stack Engineer.What’s the role?You’ll join Pacific Banking Technology as we modernise the technology supporting banking services across Fiji and Papua New Guinea. Your focus will be full stack engineering, with an emphasis on cloud, backend development and integration, designing secure solutions...

Our Technology team supports Commodities and Global Markets by developing and enhancing a range of trading, risk, transaction and data platforms. We work collaboratively to deliver reliable, high-performing technology solutions that support business outcomes. We are a global financial services group operating in 30 markets with 57 years of unbroken...

Red Dirt Equities Pty Ltd – Sydney CBD NSW Red Dirt Equities Pty Ltd t/as 123STC is seeking a talented Graduate Level Full Stack Developer to join our growing technology team. This is a full-time position based in Sydney NSW, offering an exciting opportunity for a recent graduate or early-career developer to build and expand their technical expertise in a...

HCF is seeking a Mobile App Engineer to design, develop and maintain high-quality mobile apps for iOS and Android using React Native and native modules. You will work across the full development lifecycle, collaborating with product, design and backend teams to deliver robust features and secure data handling.The role requires strong React Native skills,...

Solution Designer - JAVA/Angular - 6 Month contact - Sydney - $850pd - $950pd As a Senior Solution Designer, you will translate business and project requirements into technology solutions, working between architecture and delivery teams. You will own solution design from concept through to implementation, guide squads, engineers and tech leads through...

Job Description Senior Mobile Engineer (React Native) ADHD care is broken, but we’re fixing it. Kantoko makes high quality ADHD care accessible, from diagnosis to long term support and care. This is a rare opportunity to be an early engineer in a fast-moving startup led by a successful founder (prev startup acquired by American Express). You'll have an...

Company: Oliver Wyman Description: Who we are At Oliver Wyman, a Marsh (NYSE: MRSH) business, we bring deep industry insight, bold innovation, and a collaborative approach that cuts through complexity to help organizations navigate their most defining transformative moments. As a business of Marsh, we work alongside the world’s leading experts across...

Software development is changing fast, and code is no longer written by humans alone. Secure Code Warrior is the AI Software Governance platform that gives organizations visibility into how their software is created, strengthens developer capability, and reduces risk before code reaches production. Built on a decade as the world's leading secure coding...

Who We Are We are a global technology consultancy with a trademarked, AI-first engineering approach for accelerating the delivery of digital products and revolutionizing platform modernization. We do the right thing, and we do it right. We're proud to be a World Economic Forum New Champion, and a B Corp-certified company. About Gen-e2 While the market is...