Full-Time

Senior Systems Engineer

User Support

Arch Capital Group

Arch Capital Group

Underwrites insurance, reinsurance, and mortgage insurance

No salary listed

London, UK + 11 more

More locations: Maidstone, UK | Leeds, UK | Bristol, UK | Southampton, UK | Birmingham, UK | Ipswich, UK | Sheffield, UK | Dorking, UK | Glasgow, UK | Manchester, UK | Welwyn Garden City, UK

In Person

Category
IT & Security (2)
,
Required Skills
PowerShell
Microsoft Azure
LDAP
Computer Networking
Terraform
VMWare
Requirements
  • A minimum of 5 years of relevant experience supporting a production environment.
  • At least 3 to 5 years of relevant practical experience managing/troubleshooting authentication services.
  • At least 5 plus years of strong Automation Experience.(PowerShell/Scripts/Terraform)
  • At least 5 years of advanced level Active Directory experience.
  • Knowledge of AKS, Kerberos, LDAP, Active Directory, DNS, DHCP.
  • Experience with implementation of backup/restore and disaster and recovery strategies.
  • Strong familiarity with security issues surrounding network computing and experience in implementation of security systems and controls.
  • Strong knowledge of MFA, Enterprise Apps, IaaS and PaaS in MS Azure
  • Expert knowledge of Active Directory, GPO's in a Windows Server 2019/2016 environment.
  • Significant experience with Windows operating systems scripting and troubleshooting.
  • Experience with user and security administration in the Windows environment.
  • Extensive experience with maintenance and administration of VMWare virtualized systems.
  • Knowledge of Microsoft Exchange, HP Proliant Servers, (Inc. iLO) are preferable.
  • Knowledge of Microsoft Windows and Non-Windows Server architectures, Virtualization Technologies.
  • Candidate must have a technologist mindset with aptitude to work on complex projects while possessing organization, time management, and multitasking skills.
  • Candidates should have excellent written and oral communication skills with ability to cross-train team members.
  • Strong ability to adapt to an extremely dynamic environment comprising of high degree of complexities and priorities.
Responsibilities
  • Candidate MUST have strong Power Shell scripting experience as well as operational responsibility over the Active Directory, DNS, DHCP and PKI services.
  • Strong Azure Iaas + PaaS and Office 365/Exchange Online experience.
  • Install and maintain hardware and software on a virtualized Windows network.
  • Develop processes and procedures to ensure managed environments maintain the highest levels of availability, security, and quality.
  • Lead the security work stream of Active Directory consolidation program; Identify risks and provide guidance regarding remediation of gaps, to facilitate delivery of a hardened and sustainable AD environment. Deliver scripted solutions to assist with discovery and remediation of ad-hoc security gaps.
  • Follow all set procedures and policies pertaining to the Change Management system.
  • Develop capacity forecasts for managed environments that are proactive and prevent problems prior to outages.
  • Manage \"crisis situations\" to a satisfactory conclusion (even under stress).
  • Provide guidance on topics broadly related to information security risk and compliance.
  • Serves as escalation point and provide troubleshooting guidance and direction in resolution of escalated issues and/or complex production, application or system problems.
  • Candidate must be able to accommodate schedule flexibility to deal with escalations and occasional changes during non-core business hours.
Desired Qualifications
  • Knowledge and experience of LAN/WAN/Firewall/VPN network technologies.
  • Knowledge and experience of Citrix Virtual Apps and Desktop configuration and support in production environments.
  • Knowledge and experience of Linux
  • Knowledge and experience of Load Balancing technologies including configuration and support of production systems.
  • Knowledge and experience of AWS
  • Knowledge and experience of Cloud based security systems e.g. Tenable Nessus, Solarwinds, Mimecast, Crowdstrike
  • Industry specific training or designation such as MCSA or equivalent
  • Technical degree or certifications preferred but not required.

Arch Capital Group Ltd. operates globally in three segments: Insurance, Reinsurance, and Mortgage. The Insurance segment covers specialty lines, the Reinsurance segment handles property and casualty risk, and the Mortgage segment provides mortgage insurance and reinsurance products. The company underwrites policies, sets premiums to match risk, and earns investment income from premiums and investments. By focusing on disciplined underwriting, risk management, and capital allocation, Arch Capital aims to maintain financial strength and sustainable profitability while growing through prudent risk transfer.

Company Size

N/A

Company Stage

IPO

Headquarters

Hamilton, Bermuda

Founded

1995

Simplify Jobs

Simplify's Take

What believers are saying

  • Helix partnership with Somers Re provides expanded specialty insurance capacity globally.
  • Now Insurance investment positions Arch in high-growth AI medical liability segment.
  • $223 million green bond portfolio attracts ESG-focused institutional capital flows.

What critics are saying

  • GILTI tax rules impose 15% corporate tax on U.S. operations starting 2026.
  • Catastrophic hurricane losses in 2025 overwhelm property reinsurance reserves, force premium hikes.
  • FHFA capital requirements increase Arch MI reserves 10%, reducing return on equity.

What makes Arch Capital Group unique

  • Specialty insurance focus on difficult, unusual risks across 60 global offices.
  • World's largest mortgage insurer after acquiring AIG's United Guaranty in 2016.
  • Strategic minority stakes in Helix and Now Insurance expand AI-enabled capacity.

Help us improve and share your feedback! Did you find this helpful?

Benefits

Hybrid Work Options

Company News

Comeryx
Feb 19th, 2026
Comeryx | The AI-Native MGA for Small Business Artisan Contractors E&S Insurance

Comeryx is the first fully digital platform purpose-built for the small business artisan contractors market. We replace manual friction with an autonomous decision engine, enabling wholesalers to quote, bind, and issue complex risks in minutes, not days.

FinSMEs
Jan 10th, 2024
Rainbow Raises $12M in Funding

Rainbow, San Francisco, CA-based provider of a digitally-enabled managing general underwriter building tailored small business insurance products, raised $12M in funding

Coverager
Oct 3rd, 2023
Reserv Raises $20M Series A Co-Led By Altai Ventures and Bain Capital Ventures (BCV) to Accelerate Already-Rapid Growth

“Reserv is one of the fastest growing insurtech startups we have seen at this stage" said Matt Harris, Partner at Bain Capital Ventures (BCV).

The Royal Gazette
Aug 22nd, 2023
Arch Capital subsidiary invests in pioneering Now Insurance

Now Insurance, the full-stack, AI-enabled commercial insurance platform specialising in medical professional liability coverage, has announced an investment from a subsidiary of Bermudian-based Arch C...

The Royal Gazette
Jul 12th, 2023
Arch takes minority stake in Helix

Helix Underwriting Partners Ltd has entered into an equity investment agreement under which Arch Capital Holdings Ltd has become a minority shareholder in the Bermudian-based agency. The company said ...