Windows Systems Engineer
Confirmed on the employer's own hiring board on Nov 4, 2026. First seen by Alion on Nov 3, 2026. Caxton scores A on the Alion truth index.
About Caxton Associates:
Caxton Associates, founded in 1983, is a global trading and investment firm with offices in London, New York, Singapore, Monaco, Dubai and Bengaluru. Caxton Associates’ primary business is to manage client and proprietary capital through a suite of products designed to fit the specific needs of investors. Employing a multi-portfolio manager framework, Caxton excels in discretionary global macro investing, leveraging its diversified expertise across asset classes and markets.
About the Role:
An excellent opportunity is open for a proactive Windows System Engineer to join a leading hedge fund and make an immediate impact on challenging infrastructure projects, driving automation, security, and efficiency across the IT infrastructure in a collaborative working environment.
The successful candidate will be a hands-on engineer who thrives in tackling complex technical tasks and is experienced with optimising and supporting a highly available IT infrastructure.
This role requires good technical and communications skills and a passion for the latest technology. The ideal candidate will have 5-10 years of applied experience as a Windows Systems Engineer that includes the deployment, monitoring and support of secure Windows Servers running business-critical application platforms.
Responsibilities:
- Deploy and support Enterprise Windows Server 2019-2025 and Microsoft 365 solutions (Entra ID, Exchange, Intune, Teams, Conditional Access) to meet organizational needs and following best practices
- Manage and optimise the Windows server estate, focusing on on-prem infrastructure based on Nutanix AHV and also cloud infrastructure platforms (Azure / AWS)
- Perform system maintenance, such as applying patches and updates to ensure availability, optimal performance and security of IT infrastructure
- Monitor system performance and proactively identify/resolve issues
- Maintain detailed documentation of system setup, configuration, procedures and change
- Implement and manage security platforms including endpoint protection and patch management to protect data and shared IT infrastructure
- Manage backup solutions to ensure data recovery and resiliency
- Work as part of the Infrastructure and Systems Engineering team to plan and execute larger IT projects, such as system upgrades, migrations, and deployments
- Take ownership of ongoing Windows-related projects, driving them forward and ensuring timely completion
- Keep up to date with the latest technologies, security vulnerabilities and industry best practices
- Ensure that systems and user activities comply with organizational policies and any relevant legal or regulatory frameworks
- Troubleshoot and resolve system issues and outages
Requirements
- Previous experience working in Financial Services (preferred)
- Proven experience as a Windows System Administrator or currently in a similar role
- Solid understanding of Active Directory Services (DNS/DHCP/FSMO/ADFS/SSO/ADCS/Group Policy)
- Solid understanding of networking concepts, including TCP/IP, LAN/WAN
- Scripting skills desirable (e.g. PowerShell, Batch scripting) for automating routine tasks and deployments
- Good knowledge of AWS Infrastructure and Linux administration (desirable)
- Strong written, oral, and interpersonal communication skills
- Ability to troubleshoot systems issues and applications in a logical and level-headed manner
- Be able to communicate ideas in both technical and user-friendly language
- Highly self-motivated and directed, with a keen attention to detail
- Ability to manage time and prioritize tasks effectively in a fast-paced environment
- Strong collaborative skills with the ability to work effective in a team-oriented environment
- Displays and operates at the highest degree of ethics and integrity