C# Senior Software Engineer at Optiver Asia Pacific Pty Ltd (Sydney, Australia)

Optiver is a leading, global trading firm with a focus on awesome people and building industry-leading technology. We have some of the most brilliant minds in the industry and are regularly voted in the Top 20 Greatest Places to Work in Australia.

At Optiver, we make markets and we use technology to solve challenging problems. We build our own sophisticated trading engines and control systems, and we integrate with mature enterprise systems for well understood business problems. We are hiring developers to transform our finance and post-trade business processes.

The Role

Software developers are fundamental to our success. In an industry characterised by rapid change, we value agility while acknowledging that we do our best work when we have the chance to focus. Our talented technologists work alongside business teams identifying the right problems to solve and the right methods to use. Together we build and maintain an outstanding suite of high performing, high reliability systems and applications.

What you bring

When hiring software developers, we look for the type of people that love to come to work in the knowledge that no two days are the same and that there will always be new technical problems to solve and new ways to improve the success of our systems.

• We use C# for these systems, but we hold fundamental development skills and a passion for learning in higher regard than experience in a given language; we encourage those with other OO language experience, e.g. Java, to apply.


• Strong object-oriented software development experience.


• Critical thinking and inquisitive nature to able to learn business processes.


• An ability to challenge and simplify established business and identify improvements that your users didn’t even think were possible.


• You must be detail oriented and risk-aware; these finance and post-trade business processes are critical to Optiver’s ability to trade and succeed.


• Demonstrated testing experience, including TDD, unit testing and continuous delivery


• Experience with a web framework like Django, Flask, ASP.NET Core or ServiceStack is preferred


• Experience using SOAP or REST to perform system integration


• Experience with NetSuite integration a bonus

What we offer

At Optiver, we have a very flat structure. We work extremely closely with our stakeholders, often working as a single team to solve Optiver’s problems. Individually, you are very highly empowered to deliver significant changes, with the support of your team and your leaders. Above all we value the passion of our technical team and foster a collaborative and innovative working environment which nurtures brilliant minds.

We strive to bring out the best in our people and in return we are fortunate enough to have one of the best benefits packages Australia has to offer.  

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