Senior System Engineer

Posted Monday, August 24, 2026 at 4:00 AM About ECI ECI is the leading global provider of managed services, cybersecurity, and business transformation for mid-market financial services organizations across the globe. From its unmatched range of services, ECI provides stability, security and improved business performance, freeing clients from technology concerns and enabling them to focus on running their businesses. More than 1,000 customers worldwide with over $3 trillion of assets under management put their trust in ECI. At ECI, we believe success is driven by passion and purpose. Our passion for technology is only surpassed by our commitment to empowering our employees around the world . As a Senior Systems Engineer, you will play a key role in our technical delivery team to drive the technology programs, including Cloud implementation and support, desktop engineering escalation and networking for a defined portfolio of clients. Using latest and greatest technologies and solutions, you will support our client’s innovation by following a set of standards and best practices in a rapidly evolving technology landscape. ECI is the leading global provider of managed services, cybersecurity, and business transformation for mid-market financial services organizations across the globe. From its unmatched range of services, ECI provides stability, security and improved business performance, freeing clients from technology concerns and enabling them to focus on running their businesses. More than 1,000 customers worldwide with over $3 trillion of assets under management put their trust in ECI. At ECI, we believe success is driven by passion and purpose. Our passion for technology is only surpassed by our commitment to empowering our employees around the world. This role is hybrid 3 days in office / 2 remote in Midtown Manhattan, NY The Opportunity: As a Senior Systems Engineer, you will play a key role in our technical delivery team by working with Client Technology Manager (CTMs) & other Systems Engineers to drive the technology programs, including Cloud implementation and support, desktop engineering escalation and networking for a defined portfolio of clients. Using the latest and greatest technologies and solutions, you will support the client’s innovation by following a set of standards and best practices in a rapidly evolving technology landscape. What you will do: Collaborate with, and act as a tier 3 escalation point for Client Technology Management, Service Desk, Engineering and other client support teams Provide advanced support of cloud infrastructures such as Microsoft 365/Azure, Amazon Web Services (AWS), Google Cloud Platform (GCP), and ECI’s proprietary technology Implement and manage enterprise mail platform and security systems such as Microsoft Exchange, Google Workspace, Proofpoint Essentials and Mimecast Execute basic tasks on enterprise switching, routing, security and wireless systems like VLAN changes, ACL updates, key rotations, and port reconfigurations Take ownership of complex technical challenges and provide long term fixes based on root cause analysis Document processes and procedures which explain system functionality or regular tasks to contribute to our internal knowledge base including architecture diagrams, runbooks, and standard operating procedures (SOP) Audit undocumented client environments and provide technical recommendations based on findings Apply best-practice configurations to client security platforms such as Azure Active Directory Conditional Access, DUO Multifactor Authentication (MFA) services, and zero-trust services such as Cloudflare and iBoss. Provide high-level consultation on information security fundamentals such as good password hygiene practices, multi-factor authentication recommendations and social-engineering defense Perform system maintenance tasks including software and operating system patching, software version upgrades, critical patch applications, and vulnerability remediation Provide advanced support of Active Directory such as Domain Controller upgrades, Group Policy creation, scheduled software deployments, network policy maintenance, and certificate management Interface with common technology support tools such as Remote Monitoring and Management (RMM), Mobile Device/Mobile Application Management, Anti-Virus/Anti-Malware Collaborate cross-functionally to ensure successful delivery of project implementations, migrations, and upgrades Acting as a technical lead for small projects and maintain accountability to delivery of scope Who you are: Bachelor’s degree in an Information Technology related field, or a minimum of 6+ years comparable experience in a technology administration role Advanced knowledge of Microsoft Operating Systems such as Windows Server and Windows 11 Advanced administration experience with Public Cloud platforms with focus in Microsoft 365 and Azure (Azure AD, Exchange Online, SharePoint Online, OneDrive for Business, Teams, Intune) Experience in administration of e-mail platforms and security integrations such as Exchange Online Experience in virtualization administration on platforms such as VMware vSphere and Hyper-V Hands on experience in deployment and management of routing, switching, wireless, and security appliance technologies using vendors such as Cisco, Palo Alto Networks, and Meraki Proficient in incident response management during security events and high-priority escalations, as well as disaster recovery and business continuity activations Bonus points if you have: Managed Service Provider (MSP) experience Certifications in cloud services, network management or cyber-security, such as CCNA, CISSP, Azure Fundamentals and VCP a plus ECI’s culture is all about connection - connection with our clients, our technology and most importantly with each other. In addition to working with an amazing team around the world, ECI also offers a competitive compensation package and the range for this role is a maximum of $130,000 annually with flexible PTO, health benefit eligibility the first of the month, life insurance, pet insurance, 401K and so much more! If you believe you’d be a great fit and are ready for your best job eve r, we’d like to hear from you!! Love Your Job, Share Your Technology Passion, Create Your Future Here! #LI-Hybrid ECI’s culture is all about connection - connection with our clients, our technology and most importantly with each other. In addition to working with an amazing team around the world, ECI also offers a competitive compensation package and so much more! If you believe you would be a great fit and are ready for your best job ever, we would like to hear from you!