oneZero Financial Systems is a global software development company with offices in the USA, UK, Singapore and Australia. Our platform, deployed with over 200 financial entities worldwide, empowers banks, brokerages and hedge funds with cutting-edge trading technology. It features a high-performance trading environment with real-time integrations to some of the world’s leading banks and financial institutions.
We are seeking a Full-Stack .NET Developer with a Frontend focus, who will help drive the development of modern, cloud-based Web applications built around oneZero’s extensive trading backend systems.
This role requires some exposure to backend development with C# and .NET Core, alongside solid frontend development experience with React and Redux, HTML, and CSS. You will collaborate with a cross-functional team to deliver seamless, reliable, and real-time user interfaces that enhance the user experience for financial applications.
oneZero earns 2025 Great Place To Work Australia Certification™ https://www.onezero.com/awards/onezero-earns-2025-great-place-to-work-australia-certification
oneZero is proud to have been named one of Business Intelligence Group’s Best Places to Work 2024: https://www.onezero.com/homepage/onezero-2024-best-place-to-work-for-third-year/
The Boston Globe names oneZero a Top Place to Work for 2023: https://www.onezero.com/homepage/the-boston-globe-names-onezero-a-top-place-to-work-for-second-year-in-a-row/
Please see oneZero featured in e-Forex Magazine to learn more about the company and our dynamic team https://e-forex.net/?s=onezero

REQUIRED SKILLS

• 3+ years of professional experience with C#, ASP.NET Core, and modern frontend technologies.
• Proven track record in designing, developing, and deploying full-stack applications in a fast-paced, agile environment.
• Strong expertise in React, Redux, and responsive design principles.
• Strong knowledge of HTML5, CSS3, and pre-processors like LESS.
• Ability to work autonomously with minimal oversight while collaborating closely with the broader team.
• High attention to detail and a commitment to delivering polished, production-ready code.
• Excellent communication skills, with the ability to explain complex technical concepts clearly to both technical and non-technical stakeholders.

ADDITIONAL SKILLS

Additional experience in any of the following will be highly regarded.:

• Experience working on financial trading products.
• Experience with C++ or additional backend programming languages.
• Knowledge of cloud services (e.g., Azure, AWS).
• Experience with front-end performance optimisation and profiling.
• Familiarity with CI/CD pipelines and version control (e.g., Git).
• Familiarity with SignalR or WebSockets for real-time communication.