Sr. VoIP Systems Engineer (Temp Contract - On Site in San Francisco)

Diamond Technology, Inc.•San Francisco, CA

10d•Onsite

About The Position

Diamond Technology is a Technical Services company. We have client who is a large local public organization with an opening for the following position: JOB TITLE: Sr. VoIP Systems Engineer (Temp Contract - On Site in San Francisco) NUMBER OF OPENINGS: 1 DESIRED START DATE: May 2026 LOCATION: San Francisco: On Site DURATION: 2+ years 40 hours a week. HOURLY RATE: $100ph Required Qualifications: • Ten (10) or more years of experience supporting Microsoft Teams and Cisco Unified Communications environments. • Strong knowledge of Microsoft Teams administration and troubleshooting. • Proficiency with Cisco Unified Communications Manager (CUCM) and related technologies. • Familiarity with Avaya Communication Manager administration and implementation. • Excellent communication and interpersonal skills. • Ability to consult with city leadership – both elected and appointed – and other key stakeholders to determine and implement the City’s strategic technology direction. • Ability to work independently and collaboratively as part of a team. • Strong analytical and problem-solving abilities. • Bachelors or Masters Required Experience • Hands-On Experience: Expert-level experience with Cisco telephony systems and Microsoft Teams, including participation in migration projects, management of VoIP solutions, and work in production environments. • Consulting or Implementation Experience: Experience providing consulting or implementation services for telephony solutions and supporting large-scale voice system migrations. • Experience architecting, supporting, integrating, and migrating Webex Contact Center solutions in public-sector or large enterprise environments, including coordination across multiple departments and stakeholders. • Experience combining technical skills, education, and certifications to effectively support migrations from legacy PBX systems, including Avaya, to modern VoIP platforms. SkillSet: • VoIP and Telephony: Understanding of Voice over IP (VoIP) technologies, SIP (Session Initiation Protocol), and enterprise telephony systems. • Networking: Knowledge of networking fundamentals, including IP addressing, routing, quality of service (QoS), and network security. • Microsoft Teams: Familiarity with Microsoft Teams architecture and its integration with Microsoft 365 services - including PowerShell commands. • Cisco Systems: Experience with Cisco Unified Communications Manager (CUCM), Cisco Call Manager, UCCE, UCCX, CER, IM&P, Cisco Unity Connection, CUBE, Cisco ISR, Webex LGW, Webex Calling, Webex Attendant Console, CIMC, VMWare, RedSky. • Avaya Systems: Familiarity with or experience supporting Avaya Communication Manager environments.

Requirements

Ten (10) or more years of experience supporting Microsoft Teams and Cisco Unified Communications environments.
Strong knowledge of Microsoft Teams administration and troubleshooting.
Proficiency with Cisco Unified Communications Manager (CUCM) and related technologies.
Familiarity with Avaya Communication Manager administration and implementation.
Excellent communication and interpersonal skills.
Ability to consult with city leadership – both elected and appointed – and other key stakeholders to determine and implement the City’s strategic technology direction.
Ability to work independently and collaboratively as part of a team.
Strong analytical and problem-solving abilities.
Bachelors or Masters
Hands-On Experience: Expert-level experience with Cisco telephony systems and Microsoft Teams, including participation in migration projects, management of VoIP solutions, and work in production environments.
Consulting or Implementation Experience: Experience providing consulting or implementation services for telephony solutions and supporting large-scale voice system migrations.
Experience architecting, supporting, integrating, and migrating Webex Contact Center solutions in public-sector or large enterprise environments, including coordination across multiple departments and stakeholders.
Experience combining technical skills, education, and certifications to effectively support migrations from legacy PBX systems, including Avaya, to modern VoIP platforms.
VoIP and Telephony: Understanding of Voice over IP (VoIP) technologies, SIP (Session Initiation Protocol), and enterprise telephony systems.
Networking: Knowledge of networking fundamentals, including IP addressing, routing, quality of service (QoS), and network security.
Microsoft Teams: Familiarity with Microsoft Teams architecture and its integration with Microsoft 365 services - including PowerShell commands.
Cisco Systems: Experience with Cisco Unified Communications Manager (CUCM), Cisco Call Manager, UCCE, UCCX, CER, IM&P, Cisco Unity Connection, CUBE, Cisco ISR, Webex LGW, Webex Calling, Webex Attendant Console, CIMC, VMWare, RedSky.
Avaya Systems: Familiarity with or experience supporting Avaya Communication Manager environments.

Nice To Haves

Microsoft Certified: Teams Administrator Associate
Microsoft Certified: Microsoft 365 Enterprise Administrator Expert
Cisco Certified Network Associate (CCNA)
Cisco Certified Network Professional (CCNP)
Cisco Certified Specialist – Collaboration
AudioCodes Certified Professional (ACP) or equivalent certification demonstrating expertise with AudioCodes Session Border Controllers (SBCs), media gateways, and integration with Microsoft Teams Direct Routing.
CompTIA Network+
ITIL Foundation

Responsibilities

Provide project-based technical support for Microsoft Teams, Cisco Unified Communications, and Webex Calling environments, including troubleshooting and issue resolution during migration and integration activities.
Support the configuration and administration of Microsoft Teams and Cisco Unified Communications environments in a project context.
Assist with the deployment, configuration, and validation of new features and updates related to VoIP and unified communications platforms.
Collaborate with IT staff and City departments to support integration and interoperability between communication systems and enterprise platforms.
Support Webex Contact Center environments and related integrations, as applicable, including platforms such as Salesforce, ServiceNow, Calabrio, and Webex AI Agent.
Conduct training sessions and develop documentation to help City administrative and end-user staff effectively utilize VoIP and unified communications solutions.
Monitor system performance during migration and transition activities and recommend improvements to enhance reliability and efficiency.
Support change management activities to minimize disruption during system migrations.
Stay current with industry developments and best practices in unified communications and VoIP technologies.