Senior Application Support Engineer
oneZero Financial SystemsSydney, New South Wales, Australia
Posted March 17, 2026
Full Time
About the Company
oneZero Financial Systems is a leading provider of multi‑asset class trading technology that enables financial institutions and brokers to compete in global markets. Founded in 2009 in Cambridge, MA, the company delivers high‑performance, scalable software handling over $250B in average daily volume and 14 million transactions per day across equities, FX, commodities, futures, and cryptocurrency. Its platform offers connectivity, aggregation, and advanced analytics, supporting 250+ clients worldwide through development and operations centers in North America, Europe, Asia, and Australia. Backed by top‑tier private equity firms, oneZero remains liquidity neutral and independent, focusing on reliability, speed, and regulatory compliance to give traders a competitive edge.
Job Description
Join oneZero Financial Systems, a fast-growing company empowering banks, brokerages, and hedge funds with cutting-edge trade routing and execution technology. As a Senior Application Support Engineer, you will ensure the stability, performance, and security of oneZero production trading platforms and lead complex deployments and client implementations.
Requirements
- 5+ years supporting production systems in the financial markets domain
- Strong operating system proficiency and networking expertise
- Experience with production systems and application monitoring
- Proven ability to independently analyze complex, multi-system issues
Benefits
- Bonus plan
- Flexible workplace with hybrid work from home
- Lunch provided daily in the office
- Private Health Insurance
- Monthly Wellness program subscription
