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...

- Work on end-to-end customer experience focused projects in a dynamic FMCG industry - Customer experience projects : Focusing on backend development - Dont settle for Ordinary : Work in an office where a Bar is in the reception - 5 days / weeks Fixed term contract through to Nov 2026 Dont settle for ordinary we welcome those on the hunt for more! At Lion we believe that life is short and...

Select how often (in days) to receive an alert: Create Alert - Work on end-to-end customer experience focused projects in a dynamic FMCG industry - Customer experience projects: Focusing on backend development - Don’t settle for Ordinary: Work in an office where a Bar is in the reception - Don’t settle for Ordinary - 5 days / weeks | Fixed term contract through to Nov 2026 Don’t settle for...

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,...

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...

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...

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...

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...

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...

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...

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...

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...

Overview We are CORTO, a cutting-edge software company dedicated to revolutionizing the legal industry. Our mission is to empower legal practitioners with AI-driven solutions that streamline their workflow, boost productivity, and provide more efficient client service. Our team of AI experts and engineers collaborate to develop intelligent software tailored to the unique needs of lawyers,...

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,...

An international gaming operator in Sydney is seeking a motivated Back End Developer (C# .Net) to join their team. The role involves designing and building new RESTful Web APIs and microservices in a microservice-based distributed system. Ideal candidates will have strong C# skills, experience with RESTful services, and be passionate about innovation. The company offers a vibrant office...