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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Systems Engineer - **Company:** Grassi & Co., Certified Public Accountants, P.C. - **Location:** Jericho, NY, United States (Remote available) - **Experience:** Expert - **Salary:** $130,000.0 - $160,000.0 - **Contract:** Permanent contract - **Skills:** Microsoft Access, Microsoft Windows, Adobe Acrobat, Macintosh Application Environment, Systems Engineering, Microsoft Azure, Backup Devices, Business Software, Microsoft Outlook, Cloud Computing, CompTIA Security+, Cyber Security, Dynamic Host Configuration Protocol, Document Management Systems, Disaster Recovery, Domain Name System (DNS), Electronic Signatures, Identity and Access Management, IT Management, Virtual Private Networks (VPN), Microsoft Security Essentials, Virtual Desktops, Network Connections, Password Management, Windows PowerShell, QuickBooks (Software), Remote Access Technology, Cloud Services, Anti-Phishing, Microsoft SharePoint, Software Deployment, TCP/IP, Virtual Machines, Wi-Fi Technology, Data Logging, Enterprise Software Applications, Technical Debt, Microsoft Onedrive, Adobe, Prosystem Fx, Information Technology, Low Latency, Cisco - **Published:** September 21, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=4560070d4b81516e ## About the Role * 5+ years of progressive experience across service desk support, advanced endpoint support, Microsoft 365 administration, secure remote access, business application support, and user-facing technical escalation. * Demonstrated ability and willingness to handle Level 1 and Level 2 calls and tickets while owning Level 3 escalations, root cause analysis, platform support, documentation, and mentorship. * Recent hands-on experience with cloud services, virtual desktop platforms, profile management, Microsoft 365, identity services, secure remote access, DNS, Wi-Fi, and production network-dependent support issues. * Experience performing advanced incident troubleshooting, implementation planning, vendor escalation, documentation, and technical communication in a deadline-driven professional services environment. Preferred * Bachelor's degree in Information Technology, Computer Science, Cybersecurity, or a related field, or equivalent hands-on technical experience, military technical training, trade school, certifications, or comparable professional experience. * Experience with endpoint management, service management, email security, endpoint protection, managed detection and response, password management, automation, security assessments, technical audits, remediation programs, business continuity, and disaster recovery. * Experience supporting accounting, tax, audit, advisory, financial services, or another regulated and deadline-driven environment. * Relevant Microsoft Azure, Microsoft 365, Microsoft Security, Cisco, CompTIA Security+, CISSP, CISM, ITIL, or comparable certifications are preferred. ## Description * Serve as the final service desk escalation point for complex incidents involving Microsoft 365, identity services, secure remote access, endpoint protection, virtual desktop platforms, profile management, printers, security alerts, and firm applications. * Lead root cause analysis for recurring, high-impact, or deadline-sensitive issues and implement durable corrective actions. * Support technical delivery for endpoint, application, Microsoft 365, secure access, identity, infrastructure, security improvement, and modernization initiatives. * Create and maintain configuration standards, operational runbooks, recovery procedures, troubleshooting guides, and knowledge articles. * Mentor Level 1 and Level 2 personnel, improve escalation quality, and provide practical knowledge transfer. * Coordinate with vendors, consultants, application owners, security resources, business stakeholders, and IT leadership. * Identify technical debt, availability risks, capacity constraints, configuration weaknesses, and opportunities for automation or standardization. * Participate in after-hours maintenance and critical incident response when business needs require it. Technical Responsibilities * Cloud, Virtual Desktop, Microsoft 365, and Identity + Administer and troubleshoot cloud services, including virtual machines, storage, networking, remote connectivity, monitoring, logging, backup, disaster recovery, and related services. + Provide advanced support for virtual desktop environments and user profiles, including access, application delivery, printing, performance, capacity, and user experience. + Administer Microsoft 365, including Exchange Online, Teams, Teams Phone, SharePoint Online, OneDrive, Outlook, Microsoft 365 Apps, Copilot, licensing, mailboxes, groups, and permissions. + Support identity and access management, including users, groups, enterprise applications, access policies, sign-in issues, and access troubleshooting. + Assess technical dependencies and business risk before changes and develop implementation, validation, and rollback plans. * Access, Networking, and Endpoint Support + Support secure remote access, DNS, network connectivity, and secure-access platforms. + Troubleshoot TCP/IP, DNS, DHCP, VPN, Wi-Fi, latency, endpoint connectivity, application access, and other network-related issues. + Provide advanced support for Windows devices, endpoint performance, imaging, deployment, printers, scanners, application delivery, endpoint management, and remote-support tools. + Support email security, endpoint protection, managed detection and response, identity security, password management, phishing investigations, suspicious sign-ins, malware alerts, and potential account compromise. + Use PowerShell and approved automation tools for diagnostics, troubleshooting, and process improvement. * Compliance, Data Protection, and Business Applications + Apply least-privilege principles, verify identity before sensitive access changes, and protect confidential client, tax, employee, and firm information. + Maintain awareness of applicable security and compliance requirements, including IRS Publication 4557, the FTC Safeguards Rule, GLBA, SOC 2, GDPR, CCPA/CPRA, and HIPAA when applicable. + Support security assessments, audit requests, remediation activities, recovery exercises, and technical control documentation. + Support integrations, secure access, application availability and performance, upgrades, and vendor escalations across the firm's application environment. * Accounting, Tax, Audit, and Firm Applications + Maintain technical knowledge of applications supporting accounting, tax, audit, advisory, document management, workflow, portals, payroll, practice management, electronic signature, PDF, scanning, printing, and remote-work processes. + Support applications including CCH Axcess, CCH Engagement, CCH Workstream, CCH Workflow, Wolters Kluwer applications, Thomson Reuters applications, Inflo, SafeSend, K-1x, SurePrep, QuickBooks, QuickBooks Online, ShareFile, Adobe Acrobat, Adobe Sign, Star Practice Management, CFS Payroll, and related tools and dependencies. + Understand the urgency of tax and audit deadlines, partner and client-impacting issues, secure access, engagement file availability, and business continuity. Coordinate technical and vendor resources while keeping stakeholders informed.