Senior Full Stack .NET Developer

6 days ago

Sydney, New South Wales, Australia Twin Technology Full time $120,000 - $180,000 per year

Senior Full Stack .NET Developer (AI Experience)

Location: Sydney CBD

Employment Type: Full-Time

About Us

Twin Technology is an AI-first venture studio and technology company committed to transforming visionary ideas into impactful, scalable solutions. We specialise in designing, building, and scaling AI-powered products that empower our clients to tackle complex challenges and achieve lasting success.

At our core, we combine deep expertise in artificial intelligence, product design, and business strategy to deliver rapid execution and real world results. Our approach fosters a culture of innovation, collaboration, and forward thinking vision, enabling us to pioneer the next wave of technological advancements for our clients and beyond.

The Role

We're looking for a Senior .NET Developer to design and build scalable software solutions using .NET technologies, with a strong focus on AI integration. You'll work closely with clients to consolidate data, automate workflows, and enhance system performance.

Responsibilities

  • Develop .NET applications (C#, ASP.NET Core, Blazor, Entity Framework, Web APIs).
  • Integrate data from multiple systems into a centralised platform.
  • Use AI tools for code review, bug detection, and testing.
  • Build secure, high-performance systems.
  • Collaborate with clients to deliver tailored, data-driven solutions.
  • Continuously improve code quality and system efficiency.

Skills & Experience

  • Advanced .NET development skills.
  • Strong SQL and data integration experience.
  • MCP server development.
  • Proficiency with GitHub, including version control workflows, pull requests, branch management, and project boards.
  • Experience with AI tools (e.g. GitHub Copilot, SonarQube).
  • Knowledge of Azure and CI/CD pipelines.
  • Front-end expertise: HTML5, CSS3, JavaScript, TypeScript.
  • Familiarity with responsive design frameworks (Bootstrap, Tailwind).
  • Excellent communication and problem-solving skills.

Bonus Skills

  • AI for DevOps: automated deployment, performance monitoring.
  • Integration of AI models for real-time insights.

What We Offer

  • Innovative, collaborative work environment.
  • Flexible work arrangements.
  • Career development in AI and software engineering.
  • Opportunity to make a real impact.

Apply Now

If you're passionate about software development and AI, we'd love to hear from you.

  • Full Stack .NET Developer

    4 days ago

    Sydney, New South Wales, Australia Adactin Full time $80,000 - $120,000 per year

    Adactin Group is a 100% Australian-owned global IT consulting company, headquartered in Sydney. We are a trusted technology partner helping organizations drive end-to-end digital transformation through our deep expertise in Microsoft and AWS ecosystems, AI-powered Digital Engineering, and future-ready Quality Assurance. Our managed delivery approach, backed...

  • Full Stack Developer

    26 minutes ago

    Sydney, New South Wales, Australia Indigitise Pty Ltd Full time $100,000 - $120,000 per year

    Full Stack Developer (.NET) – Federal Government ContractLocations: ACT, NSW, VIC, QLD, WA, SA, TAS, NT (Hybrid / Remote with onsite requirements)Estimated Start: Monday, 13 October 2025Initial Contract: 9 months | Extensions: 3 × 12 months Must be an Australian Citizen (security clearance eligibility required)The OpportunityWe are seeking an experienced...

  • Senior Full Stack .NET Engineer

    4 minutes ago

    Sydney, New South Wales, Australia Bilue Full time $120,000 - $180,000 per year

    Company Description Bilue is a digital consultancy that designs and builds smart, user-friendly technology for some of Australia's most well-known businesses. From mobile apps to beautifully designed web platforms and digital experiences, we create solutions that drive impact and deliver exceptional customer outcomes.Our culture is people-first and...

  • Senior Full Stack Developer

    4 days ago

    Sydney, New South Wales, Australia Ticketek Entertainment Group Full time $120,000 - $180,000 per year

    About Ticketek Entertainment Group​Ticketek Entertainment Group is a global fan experience Company that tickets, promotes and delivers incredible live experiences that are impossible to forget.  In a distracted world where nothing beats real human moments, We make life better liveOur Group includes; our Fan Experience Platform (Ticketek) that sells...

  • Full Stack Developer

    2 weeks ago

    Sydney, New South Wales, Australia Cygnus Consulting Full time $60,000 - $90,000 per year

    Job Title: Full Stack DeveloperLocation: Sydney, AustraliaEmployment Type: Full-time, PermanentSalary Range: AUD 77K to AUD 85KReporting To: Delivery ManagerPosition SummaryWe are seeking an experienced Full Stack Developer with a strong background in developing scalable, high-performing web applications using modern frontend and backend technologies....

  • Senior Full Stack Engineer

    2 weeks ago

    Sydney, New South Wales, Australia Outsized Full time $150,000 - $200,000 per year

    Contract:6 MonthsLocation:Sydney (Hybrid)Start Date:ASAPAbout the RoleA leading payments provider is seeking aSenior Full Stack Engineerto join its Digital Payments Platform squad. You'll work across the technology stack to deliver scalable and secure payment features, collaborating with Product Owners, Business Analysts, Engineers, and QA specialists.This...

  • Full Stack .NET React Typescript Engineers

    2 weeks ago

    Sydney, New South Wales, Australia Private Advertiser Full time $104,000 - $130,878 per year

    .NET / React Engineers – Two Openings Ready to work on a global retail platform? We're growing and looking for two Full Stack Engineers to join the team. You'll be hands-on with high-scale, high-traffic applications. You'll be based in our Sydney CBD office and collaborate with the team three days a week. The RolesFull Stack Engineer (50/50 Split) –...

  • Senior Full Stack Developer

    1 week ago

    Sydney, New South Wales, Australia Endava Full time $80,000 - $120,000 per year

    Company Description Technology is our how. And people are our why. For over two decades, we have been harnessing technology to drive meaningful change.By combining world-class engineering, industry expertise and a people-centric mindset, we consult and partner with leading brands from various industries to create dynamic platforms and intelligent digital...

  • Senior Full Stack Developer

    6 days ago

    Sydney, New South Wales, Australia Westpac Group Full time $120,000 - $180,000 per year

    Create your best future and join Westpac as a Senior Full Stack DeveloperWhat's the role?An exciting opportunity is available for a Senior Full Stack Developer, to join the WIB Technology, Transformation & Finance. Looking for a highly skilled Senior Full Stack Developer with proven expertise in both frontend and backend technologies. The ideal candidate...

  • Senior Full Stack Developer

    7 days ago

    Sydney, New South Wales, Australia Westpac Institutional Bank Full time $100,000 - $150,000 per year

    Job DescriptionCreate your best future and join Westpac as a Senior Full Stack DeveloperWhat's the role?An exciting opportunity is available for a Senior Full Stack Developer, to join the WIB Technology, Transformation & Finance. Looking for a highly skilled Senior Full Stack Developer with proven expertise in both frontend and backend technologies. The...