senior back end developer jobs in Sydney, NSW

Our client is building smart, AI-powered (and robotics!) tools that sit at the centre of workforce safety, compliance, and onboarding. From logistics warehouses to high-risk construction zones, their systems ensure that every person on-site is trained, registered, and ready before they even walk through the door. Driven by growth across all of their products, they’re now looking for a Senior...

Overview Back End Developer (C# .Net) About FDJ: At FDJ UNITED, we don't just follow the game, we reinvent it. FDJ UNITED is one of Europe's leading betting and gaming operators, with a vast portfolio of iconic brands and a reputation for technological excellence. With more than 5,000 employees and a presence in around fifteen regulated markets, the Group offers a diversified, responsible...

Seers Digital is not just another IT consulting company. We're one of Australia's fastest-growing tech firms, partnering with top-tier clients including state and federal government agencies, leading banks, and major utilities. Our mission is to deliver exceptional solutions that truly make an impact and to have fun doing it. Why You'll Love Working at Seers Digital: - Exciting Projects: Work...

Join to apply for the Back-End Developer - AI Training role at Braintrust . Job Description This is a great opportunity to supplement your income while looking for longer or more full-time work, all while contributing to the development of new AI models using your domain expertise! Our client has hired over 1,000 Braintrust talent and intends to hire hundreds more! Many Braintrust coders earn...

At Chime Labs, we're on a mission to empower home-services businesses (tradies, contractors, service outfits) with an always-on AI virtual receptionist platform that allows them to "never miss a job again". Our solution uses AI to manage customer interactions, schedule appointments, and grow business operations 24/7. We believe that the future of service-business operations is AI-native,...

1 day ago Be among the first 25 applicants About The Team At Q-CTRL, Quantum Computing Engineering is a global team of software engineers and infrastructure experts, combining deep technical expertise with a startup mindset to deliver real impact through software innovation. Our work is underpinned by robust standards, and by embracing the three virtues. Our team excels in areas across...

Senior Back End Developer – Java & AWS North Sydney | Hybrid | Full-Time, Permanent An innovative Australian SaaS company is looking for an experienced Senior Back End Developer to help scale a high‑traffic, mission‑critical cloud platform used by operational teams nationwide. You’ll work in a lean product‑focused engineering team building secure, scalable systems with real‑world impact. Key...

About Agoda At Agoda, we bridge the world through travel. Our story began in 2005, when two lifelong friends and entrepreneurs, driven by their passion for travel, launched Agoda to make it easier for everyone to explore the world. Today, we are part of Booking Holdings [NASDAQ: BKNG], with a diverse team of over 7,000 people from 90 countries, working together in offices around the globe....

This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Senior Back-End Software Engineer, Infra in Australia. Overview We are seeking a Senior Back-End Software Engineer to help scale and modernize the core infrastructure of a high-growth platform. In this role, you will take ownership of the Rails stack, ensuring it is robust, performant, and secure...

This role involves revising and localizing an existing PHP website to suit the needs of a specific local market. The project requires a developer who can work independently and remotely, ensuring the website is fully adapted for local users while maintaining high standards of quality and performance. The successful candidate will play a key part in the initial adaptation, with the possibility of...

OUR MISSION At Simply Wall St, we help people become confident, long-term investors. The stock market offers an exceptional opportunity for building wealth, but it’s easy to fail. While many chase quick wins, we believe in thinking long-term and investing like a business shareholder. Our product gives individual investors the capabilities to build a portfolio, previously only available to...

Associate Director - Recruiting Lawyers and Company Secretarial Professionals into inhouse roles at Taylor Root The Opportunity Our client is a prominent organisation in the energy sector in Australia. This is a fantastic opportunity to gain exposure to working on multi‑billion dollar major infrastructure projects to facilitate the move towards a renewable energy based system. Key...

About Hunter Hydrawise (by Hunter) is a smart, internet-connected irrigation platform that helps people take better care of their gardens and landscapes. Originally developed in Australia, it now powers irrigation for millions of customers across more than 130 countries worldwide. At the heart of Hydrawise is a powerful cloud platform running on AWS, supported by intuitive iOS and Android...

Overview As a Technical Lead specializing in Adobe Commerce (Magento) and Pimcore, you will guide and manage a team of developers to deliver high-quality e-commerce solutions. You will provide technical leadership, ensure best practices are followed, and participate in hands-on development. Your role will involve overseeing the technical aspects of projects, mentoring team members, and ensuring...

Overview Join to apply for the Java Engineer - Back End role at Motion Recruitment. Motion Recruitment has partnered with an iconic Aussie household name. Their technology team is driving some of the most exciting digital transformation initiatives in the industry, and we are looking for a highly skilled Back End Engineer to join the team. This is an opportunity to work on large-scale,...

Join a high-impact engineering team building critical infrastructure used by millions every day. You'll work in a global-scale financial services environment, solving complex, meaningful problems that directly affect the real world. You'll be part of a collaborative, forward-thinking team, the key to modernising a global banking experience. Contract Opportunities: Multiple contract...

About the team At Q-CTRL, Quantum Computing Engineering is a global team of software engineers and infrastructure experts, combining deep technical expertise with a startup mindset to deliver real impact through software innovation. Our work is underpinned by robust standards, and by embracing the three virtues. Our team excels in areas across back-end, front-end, machine learning, and platform...

Overview Back End Staff Software Engineer (Bangkok based, Relocation provided) This role is part of Agoda's Back-End Engineering team, focused on building scalable, fault-tolerant systems and APIs that host core business logic across inventory, pricing, product information, customer data, communications, partner data, booking systems, payments, and more. Responsibilities - Develop...

Senior Software Engineers - Front End & Back End (2 openings) Hydrawise (by Hunter) is a smart, internet-connected irrigation platform that helps people take better care of their gardens and landscapes. Originally developed in Australia, it now powers irrigation for millions of customers across more than 130 countries worldwide. At the heart of Hydrawise is a powerful cloud platform running on...

Job Description Back End Developer (C# .Net) About FDJ: At FDJ UNITED, we don't just follow the game, we reinvent it. FDJ UNITED is one of Europe's leading betting and gaming operators, with a vast portfolio of iconic brands and a reputation for technological excellence. With more than 5,000 employees and a presence in around fifteen regulated markets, the Group offers a diversified,...