Business System Application Developer

Company Description

Who we are:

OTR Group comprises of over 1000 retail, convenience, and quick service restaurants – including brands such as Reddy Express (formerly known as Coles Express), SmokeMart Giftbox, and in S.A, Krispy Kreme, Hungry Jacks, Oporto, Guzman and Gomez and many others.  OTR Group is part of the Viva Energy Australia Group – an ASX-listed company helping Australians reach their destination by refining, importing, and distributing energy products while building a safe and sustainable energy future for all Australians.

With Viva Energy Australia’s national footprint and OTR’s history of industry-leading innovation, there has never been a more exciting time to join the OTR Group as we set out to redefine the retail landscape in Australia.

Job Description

We’re seeking a Business Systems Application Developer to design, build, and enhance IT solutions that support key business operations. In this role, you’ll be responsible for the end‑to‑end development lifecycle from technical design and development through to integration, testing, deployment, and ongoing support ensuring solutions are scalable, maintainable, and aligned with development standards.

You’ll work closely with the IT Development Manager and business stakeholders to resolve issues, improve existing applications and extensions, and identify opportunities to streamline and simplify systems. Strong technical documentation and clean, well‑structured code are central to the role, enabling long‑term maintainability and continuous improvement across the application landscape.

Key Responsibilities:

• Enhance the spirit and reputation of the organisation
• Maintain a culture focused on sales and customer service
• Use specialised knowledge in mobile application development to shape solutions to achieve the desired outcomes through configuration and extension builds
• Deliver solutions that help the business drive simplification end to end
• Guide and coach our teams in how we can improve business outcomes by leveraging or enhancing the greater capabilities of mobile applications
• Produce quality outcomes and solutions
• Apply governance principles in solution development
• Solve operational problems and identify, analyse and address the root cause
• Collaborate across functions to drive our competitive advantage

Qualifications

• 5+ years of .NET experience
• Strong hands-on experience with C# and the .NET ecosystem (.NET Core / .NET 6+)
• Solid SQL skills, including stored procedures, indexing, and query optimisation
• Experience working with Azure, especially Azure Functions and cloud integrations
• Self-sufficient and able to investigate unfamiliar codebases independently
• Comfortable handling escalated issues and complex troubleshooting
• Knowledge of EDIFACT messaging standards is a bonus but not essential
• Familiarity with .NET MAUI or Xamarin.Forms is a plus

Additional Information

About Viva Energy 

Join a team that values diversity. Viva Energy is a great place to be yourself. We believe in our people, trust in their positive intentions, and empower everyone to amplify their voice across the business. We value inclusion because that’s how we get the best outcomes. 

Awarded the WGEA Employer of Choice for Gender Equality for the past five years highlights that we are driven by our people and continuing our focus on making Viva Energy reflect the ever-changing face of Australia.  

We welcome applicants from diverse backgrounds including Aboriginal and Torres Strait Islander people and encourage and support diversity in our traditional and non-traditional roles.

Please note: This role is being sourced through Viva Energy Australia; therefore we will not be accepting applications via external recruitment agencies.

Note:  Only applications from candidates who hold full working rights for employment in Australia will be considered.

Applications close 8 June 2026