IT Operations Engineer

Come join oneZero Financial Systems! An exciting, fast-growing company with Headquarters in Somerville MA, oneZero empowers banks, brokerages, and hedge funds with cutting-edge trade routing and execution technology. Our platform, deployed with 200+ entities globally, features a low-latency trading environment, integrations to the world’s leading execution venues, and reliable IT infrastructure and technical support—all designed to be customized and scaled to serve any business model and any size of market participant. We take pride in our great work atmosphere and highly motivated team of engineers. We are currently looking for a motivated and talented IT Operations Engineer to join our Sydney office.

oneZero is proud to have been named one of Business Intelligence Group's Best Places to Work for four consecutive years: https://www.onezero.com/awards/onezero-earns-recognition-as-a-2025-best-place-to-work/

oneZero earns 2025 Great Place To Work Australia Certification: https://www.onezero.com/awards/onezero-earns-2025-great-place-to-work-australia-certification/

The Boston Globe names oneZero a Top Place to Work in 2022, 2023, and 2024: https://www.onezero.com/homepage/the-boston-globe-names-onezero-a-top-place-to-work-for-third-year-in-a-row/

Job Description:

The IT Operations Engineer is responsible for delivering reliable infrastructure and exceptional user support through 24x7 monitoring, proactive management, and white-glove service. This role is critical to maintaining our mission-critical financial services environment, where uptime is paramount.

The engineer manages the complete lifecycle of both end-user systems and production infrastructure, from initial setup and onboarding through daily operations, maintenance, and eventual offboarding. This position demands strong technical expertise, independent decision-making, and sound judgment when responding to critical incidents in a fast-paced, high-availability environment where every minute of downtime has a significant business impact.

Responsibilities:

Production Infrastructure Monitoring and Incident Response

Monitor critical production systems 24x7 to ensure optimal performance and availability

• •Exercise independent judgment in assessing incident severity and determining appropriate
• response strategies

• •Respond to infrastructure alerts and incidents with urgency and precision, making real-time
• decisions on escalation paths and resolution approaches

Perform root cause analysis and implement corrective actions to prevent recurring issues

Evaluate system behavior patterns and make independent determinations on necessary interventions

Coordinate with development teams during critical incidents and outages, serving as the technical authority for infrastructure decisions

Document incident response procedures and maintain incident management records

Participate in an on-call rotation to provide round-the-clock infrastructure support

Infrastructure Maintenance and Security Patching

Design and execute planned maintenance windows for servers, network equipment, and applications

Evaluate security patch criticality and make independent decisions on deployment timing and prioritization

Apply security patches and updates to maintain system currency and compliance

Perform routine system health checks and preventive maintenance tasks

Manage backup systems and validate backup integrity regularly

Coordinate with the security team to implement security controls and remediation efforts

Maintain accurate configuration management and documentation

Assess infrastructure requirements and recommend improvements to system architecture

Service Request Fulfillment

Process and fulfill IT service requests through the ITSM platform with attention to SLA compliance

Coordinate software installations, license management, and application access requests

Support the complete lifecycle of hardware and software assets, including procurement, deployment, configuration, and decommissioning

Manage vendor relationships for equipment repairs and service delivery

Evaluate and determine appropriate solutions for complex user requests requiring technical analysis

Create and maintain knowledge base articles and user documentation

Provide training and guidance to end users on IT tools and best practices

Design and implement onboarding and offboarding processes for both end-user systems and production infrastructure

Requirements

Core Requirements

3+ years of experience in IT operations or a similar technical support role

Demonstrated ability to exercise independent judgment in high-pressure situations and make critical decisions affecting system availability

Experience with Windows and Linux server environments, virtualization technologies

Strong understanding of network protocols, TCP/IP, DNS, DHCP, and VPN technologies

Hands-on experience with monitoring tools (e.g., Nagios, Datadog, PRTG, or similar)

Proficiency with ITSM platforms (ServiceNow, Jira Service Management, or similar)

Experience with Active Directory, Office 365, and enterprise security tools

Knowledge of backup and disaster recovery procedures

Proven analytical and problem-solving abilities with the capacity to assess complex technical issues and determine optimal solutions

Excellent communication skills and customer service orientation

Ability to work flexible hours, including on-call rotation

Preferred Qualifications

Experience in financial services or other high-availability environments

Knowledge of cloud platforms (AWS, Azure) and hybrid infrastructure

CompTIA A+, Network+, Security+ or equivalent certifications

Experience with automation and scripting (PowerShell, Python, Bash)

Familiarity with the ITIL framework and best practices

Understanding of foreign exchange markets and trading platform requirements