Come join
oneZero Financial Systems
, a global leader in trade routing and execution technology. We empower banks, brokerages, and hedge funds with a highly customizable, low-latency trading platform trusted by 200+ financial institutions worldwide.
At oneZero, we combine cutting-edge technology with a collaborative, high-performance culture. We're proud to be recognized as a place where people genuinely enjoy doing their best work:
Best Places to Work
— Business Intelligence Group (3 consecutive years)
/
**** Great Place To Work® Australia CertificationTM
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Benefits Include
Competitive bonus plan
Flexible hybrid work options
Company-provided parking
Daily lunch provided in the office
Private Health Insurance
Monthly wellness program subscription
The Opportunity
We're looking for a
Senior Human Resources Manager
to lead and execute all HR functions for our Australian operations while partnering closely with our global HR team. This is a hands-on, senior role ideal for an experienced HR leader who thrives in a rapid-paced, technology-driven environment and enjoys both strategic ownership and operational execution.
This role is a full-time position located in oneZero's Sydney or Canberra office. Applicants must be based in either the Sydney or Canberra region, or be willing to relocate.
What You'll Do
You will operate with a high degree of autonomy and accountability across all HR functions, while mentoring and leading HR staff.
Core Responsibilities
Independently manage and execute all HR processes and practices, including:
Perks administration
Recruitment and staffing
Performance management
Payroll administration
Employment law compliance (with strong focus on Australian regulations)
Training and development
Workplace health and safety
HR Systems & Operations
Manage key HR systems, including:
Payroll, ensuring Superannuation and payroll tax compliance in collaboration with Finance
Recruitment systems,



including applicant tracking and interview coordination
Talent & Recruitment
Partner with hiring managers to develop role-specific recruitment strategies
Draft compelling job advertisements and identify effective sourcing channels
Proactively source candidates and manage direct recruitment efforts
Oversee interviews, candidate selection, offer negotiation, and onboarding
Manage external recruitment agencies when required
Year-End & Compensation Processes
Contribute to the end-of-year performance review and calibration processes
Manage compensation reviews, title changes, and communications
Maintain job architecture, role grading, and market compensation benchmarks
Leadership & Development
Supervise and develop HR staff and office support personnel
Set objectives, conduct performance reviews, and coach team members
Train managers on HR systems, employment regulations, and people management best practices
Support leaders with conflict resolution and performance planning
Culture & Workplace Experience
Oversee onboarding, employee records, and compliance documentation
Partner with building management and service providers to maintain a safe, positive work environment
Coordinate employee engagement, morale, and team events
Actively contribute to a culture of high performance, collaboration, and employee well-being
Requirements
Relevant 4-year degree or equivalent experience
8–10 years of HR experience, including
5+ years in a demonstrated leadership role within Australia
Strong knowledge of Australian employment law and HR best practices
Proven experience with payroll systems and HR management platforms
Excellent communication and interpersonal skills, including the ability to handle sensitive and difficult conversations
Highly organized, detail-oriented, and comfortable in a fast-paced environment
Ability to work independently and mentor others
Proficiency in Microsoft Office (Word, Excel, PowerPoint)
Interest in technology or financial services is a plus

📌 Senior Human Resources Manager (Sydney)
🏢 oneZero Financial Systems
📍 Sydney