Senior Systems Engineer, Cybersecurity

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🕒 March 19

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SD Solutions

WebsiteLinkedInAll Job Openings

201 - 500 employees

🤝 B2B

🎯 Recruiter

🏢 Enterprise

B2B • Recruitment • Enterprise

SD Solutions is a company that specializes in providing a variety of staffing and outsourcing solutions aimed at driving IT-driven businesses towards growth. The company offers services such as Staff Augmentation, Recruitment Process Outsourcing (RPO), Business Process Outsourcing (BPO), and Employer of Record (EoR), which allow businesses to hire globally without the need to establish a legal entity abroad. SD Solutions focuses on empowering businesses with comprehensive services tailored for global expansion and offers strategic guidance and consulting. They provide dedicated engineering, data science, and DevOps teams to ensure seamless technological evolution. With significant experience and a strong track record, SD Solutions helps businesses scale and transform dynamically.

📋 Description

• Architect, deploy, and maintain Microsoft 365, Azure, Azure AD (Entra ID), and Azure Virtual Desktop (AVD) environments. • Manage and optimize Windows Server ecosystems, including Terminal Servers, Remote Desktop Services (RDS), and Remote Desktop farms. • Perform advanced troubleshooting and resolution for system performance issues, authentication problems, networking, DNS, storage, virtualization, CPU spikes, storage failures, service outages, domain trust issues, and authentication failures. • Oversee and execute migrations for Microsoft 365, Exchange, file servers, cloud workloads, and related environments. • Implement and manage enterprise security tools, including Sophos Central, Windows Defender, and SonicWall firewalls (with advanced rule tuning, NAT, VPN configuration). • Conduct vulnerability mitigation, system hardening, firewall rule optimization, and security policy enforcement in line with best-practice cybersecurity frameworks. • Serve as Tier 3–4 escalation point for complex support tickets involving servers, cloud services, firewalls, identity management, or high-severity incidents. • Participate in on-call rotation to respond to critical alerts and high-severity incidents. • Create and maintain comprehensive documentation, runbooks, environment diagrams, and knowledge base resources to enhance team operations and efficiency. • Recommend infrastructure improvements focused on reliability, security, and performance. • Develop and implement automations, scripts, policies, and configurations using PowerShell, Intune, Azure Automation, Group Policy, and related tools.

🎯 Requirements

• 5+ years of experience in a Senior Systems Engineer, Cloud Engineer, or Infrastructure Engineering role, preferably in a fast-paced Managed Service Provider (MSP) environment. • Advanced proficiency in Microsoft 365, Azure, Azure AD/Entra ID, Windows Server (2012–2025), Terminal Server/RDS/AVD, Intune and endpoint management, VMware, and/or Hyper-V virtualization. • Strong hands-on experience with SonicWall and Sophos firewalls (including advanced rule tuning, NAT, VPN), Sophos Central, DNS, DHCP, Group Policy, and Active Directory/domain services. • Proven track record of handling advanced escalations and resolving complex technical issues under pressure. • Excellent communication and customer-facing skills for interacting with clients and stakeholders. • Strong documentation discipline and ability to produce clear, detailed technical materials. • Ability to thrive in a high-pressure environment, manage multiple priorities, and demonstrate an ownership mentality with a strong commitment to service excellence.

🏖️ Benefits

• Opportunity to work as a technical expert in a leading managed cybersecurity and IT services company, protecting businesses from cyber threats, ransomware, and data breaches. • Engage in diverse, challenging work across cloud, on-premises, and hybrid infrastructures with high-impact responsibilities in architecture, security hardening, incident response, and automation. • Join a 24/7 operations-focused team with on-call rotation, offering exposure to real-world, high-severity incidents and advanced escalation scenarios. • Contribute to continuous improvement through automation development and infrastructure optimization recommendations. • Potential for professional growth in a specialized MSP environment serving clients nationwide and beyond.