UC Architect
Freelancer
Keywords
Cisco Unified Communications Manager
Cisco Certified Internetwork Expert
Cisco
Application Programming Interfaces (APIs)
Automation
VoIP
Cisco Certified Network Professional
Cisco IOS
Consulting
Content Management
Skills
Freelancing systems architect providing expert consulting for network engineering pre-sales, design, deployment, escalation support, custom software integrations and network automation.
- CCIE - Expert
- Cisco IOS - Expert
- Cisco Networking - Proficient
- Unified Communications - Expert
- CUCM / CallManager - Expert
- IM and Presence - Expert
- UCCX - Proficient
- Unity Connection - Expert
- SME - Expert
- CMS / Cisco Meeting Server - Expert
- VoIP - Expert
- Video Conferencing - Expert
- SIP - Expert
- H323 - Expert
- WebRTC - Expert
- API - Proficient
- DevOps - Basic
- Network Automation - Basic
- Linux - Expert
- Python - Proficient
- SQL - Expert
- ITIL - Proficient
Project history
11/2018
-
Present
Freelancing as a solution engineer and systems architect for several large enterprise German clients covering Cisco Unified Communications, Telepresence Video, and SIP Trunking solutions.
01/2017
-
12/2018
Technical Solution Specialist
NTT Austria
* Technical Design Architect (TDA) for Large Enterprise UC and Video solutions, providing
technical consulting to sales and pre-sales teams and acting as technical lead for all Cisco UC
post-sales systems integration design and deployment
* In-house Collaboration R&D software engineering, focusing on automation tools and script
development with Cisco WebEx and CUCM AXL/Unity APIs, custom reporting with SQL
Significant Projects
* Designed global hosted multi-tenant hybrid-cloud solution for an Enterprise customer with
multiple subsidiary companies acting as tenants.
* Defined Jinja2-based IOS Voice Gateway templates for Ansible-based configuration management and
provisioning
* Migrated various VXML scripts to Tcl by utilizing IOS's VGAPI to unlock dependencies facing
multiple customer hardware refreshes on ISR 4K Series routers which do not support VXML
* Developed Python-bsed SDK for CUCM AXL and RisPort APIs and Unity Connection CUPI API
technical consulting to sales and pre-sales teams and acting as technical lead for all Cisco UC
post-sales systems integration design and deployment
* In-house Collaboration R&D software engineering, focusing on automation tools and script
development with Cisco WebEx and CUCM AXL/Unity APIs, custom reporting with SQL
Significant Projects
* Designed global hosted multi-tenant hybrid-cloud solution for an Enterprise customer with
multiple subsidiary companies acting as tenants.
* Defined Jinja2-based IOS Voice Gateway templates for Ansible-based configuration management and
provisioning
* Migrated various VXML scripts to Tcl by utilizing IOS's VGAPI to unlock dependencies facing
multiple customer hardware refreshes on ISR 4K Series routers which do not support VXML
* Developed Python-bsed SDK for CUCM AXL and RisPort APIs and Unity Connection CUPI API
01/2016
-
01/2017
Consulting UC Engineer
VOSS Solutions
* Consulted to engineering teams, providing customer advocacy and acting as a conduit between
engineering, marketing, and external Cisco development teams
* Provided expert insight into user journeys of Large Enterprise and Service Provider customers
* Designed reference test environments to model real-world customer reference configurations and
data sets
* Conducted various R&D projects for engineering management to solve challenging production
issues and overcome dev environment provisioning automation roadblocks
Significant Projects
* Designed scaled reference test beds to test the support of 400,000+ VoIP endpoints
* Developed a provisioning solution to generate on-demand dead-net virtual testbeds, adopting a
containerized NAT integration with ESXi
engineering, marketing, and external Cisco development teams
* Provided expert insight into user journeys of Large Enterprise and Service Provider customers
* Designed reference test environments to model real-world customer reference configurations and
data sets
* Conducted various R&D projects for engineering management to solve challenging production
issues and overcome dev environment provisioning automation roadblocks
Significant Projects
* Designed scaled reference test beds to test the support of 400,000+ VoIP endpoints
* Developed a provisioning solution to generate on-demand dead-net virtual testbeds, adopting a
containerized NAT integration with ESXi
01/2014
-
01/2016
Principal Network Engineer
Sizwe Africa IT Group
* Designed BE6K and multi-cluster Enterprise UC systems based on Cisco Validated Design and SRND
best practice documentation
* Deployed UC solutions with Call Manager, Unity Connection, Cisco Jabber, SIP trunking with
CUBE, Unified Attendant Console, WebEx, Prime Collaboration and Cisco TelePresence Server and
ExpressWay
Significant Projects
* Designed and deployed UCC solution supporting 135,000 endpoints. Solution featured 120 CUCM
servers across nine Leaf Clusters and featuring E.164 dial plan design with SME, inter-cluster
peering for IM and Presence (Cisco Jabber) and dynamic routing design using GDPR. Due to the
deployment size, both system and dial plan designs were externally reviewed by Cisco BU and
Cisco Advanced Services
* Deployed 26-Bridge Cisco Telepresence solution, based Virtual Telepresence Server (vTS),
TelePresence Conductors, TMS scheduling and legacy MCU integration
* Performed system migrations to collapse 40 MCS clusters onto a single Cisco UC on UCS 9 Leaf
Cluster core. Data migrations were completed with Python scripting and Cisco Prime Collaboration
Provisioning (PCP) and BAT
* Designed a scalable site gateway template for SRST to accommodate complex COR and SRST
dial-peer requirements for open area offices to protect against toll fraud, and deployed at 100+
remote sites
best practice documentation
* Deployed UC solutions with Call Manager, Unity Connection, Cisco Jabber, SIP trunking with
CUBE, Unified Attendant Console, WebEx, Prime Collaboration and Cisco TelePresence Server and
ExpressWay
Significant Projects
* Designed and deployed UCC solution supporting 135,000 endpoints. Solution featured 120 CUCM
servers across nine Leaf Clusters and featuring E.164 dial plan design with SME, inter-cluster
peering for IM and Presence (Cisco Jabber) and dynamic routing design using GDPR. Due to the
deployment size, both system and dial plan designs were externally reviewed by Cisco BU and
Cisco Advanced Services
* Deployed 26-Bridge Cisco Telepresence solution, based Virtual Telepresence Server (vTS),
TelePresence Conductors, TMS scheduling and legacy MCU integration
* Performed system migrations to collapse 40 MCS clusters onto a single Cisco UC on UCS 9 Leaf
Cluster core. Data migrations were completed with Python scripting and Cisco Prime Collaboration
Provisioning (PCP) and BAT
* Designed a scalable site gateway template for SRST to accommodate complex COR and SRST
dial-peer requirements for open area offices to protect against toll fraud, and deployed at 100+
remote sites
01/2013
-
01/2014
Cisco UC Consultant
T-Systems
* Deployed CUCM and IM and Presence leaf mega-cluster to support 40,000 endpoints to extend
existing single Leaf Cluster system to multi-cluster deployment
* Oversaw technical escalation support for the entire UC infrastructure including technical
management of critical escalations to Cisco TAC and BU
* Led 70+ MGCP and SIP voice gateway deployment project
Significant Projects
* Deployed CUCM and IM&P leaf cluster to support an additional 40,000 endpoints to extend system
design to multi-cluster deployment
* Led over 100 MGCP and SIP remote site deployments
* Conducted CUCM, SME and Unity Connection cluster upgrades from 8.6.x to 9.1.2
* Re-designed client dial plan to add legacy site code dialling overlay, legacy PBX routing
load-balancing integration and TEHO
* Rolled out Cisco Jabber UC client to 20,000 users with customized software package to meet
enterprise requirements
* Provisioned Extension Mobility Cross Cluster (EMCC) to support 15,000 mobility users
existing single Leaf Cluster system to multi-cluster deployment
* Oversaw technical escalation support for the entire UC infrastructure including technical
management of critical escalations to Cisco TAC and BU
* Led 70+ MGCP and SIP voice gateway deployment project
Significant Projects
* Deployed CUCM and IM&P leaf cluster to support an additional 40,000 endpoints to extend system
design to multi-cluster deployment
* Led over 100 MGCP and SIP remote site deployments
* Conducted CUCM, SME and Unity Connection cluster upgrades from 8.6.x to 9.1.2
* Re-designed client dial plan to add legacy site code dialling overlay, legacy PBX routing
load-balancing integration and TEHO
* Rolled out Cisco Jabber UC client to 20,000 users with customized software package to meet
enterprise requirements
* Provisioned Extension Mobility Cross Cluster (EMCC) to support 15,000 mobility users
01/2011
-
01/2013
UC Engineer
VOSS Solutions
* Led a team of 10 Voice Engineers responsible for solutions testing of Cisco HCS.
Coordinated cross-team collaborative feature parity testing with engineers in USA, India and UK
* Designed multi-cluster UC system integration test environments
* Systems integration testing for provisioning Cisco UC Applications, Voice Gateways and CUBE
Coordinated cross-team collaborative feature parity testing with engineers in USA, India and UK
* Designed multi-cluster UC system integration test environments
* Systems integration testing for provisioning Cisco UC Applications, Voice Gateways and CUBE
01/2010
-
01/2011
Software Tester
FireId
Software testing of client mobile application and back-end provisioning systems for 2FA solution at
Cape Town-based startup
Cape Town-based startup
Certifications
CCIE Collaboration
Cisco Systems
2015
LIPC-2
Linux Professional Institute
2015
WebRTC School Qualified Integrator - WSQI
The SIP School
2015
CCNP Collaboration
Cisco Systems
2012
CCDP
Cisco Systems
2012
SCCA - SIP School Certified Associate
The SIP School
2012
ITIL - Foundation Certificate in ITSM
ITIL
2011
ISEB - Foundation Certificate in Software Testing
ISEB
2011
Local Availability
Open to travel worldwide
100% remote only. Happ to discuss if occasional on-site presence is required.
Other
https://github.com/jonathanelscpt
