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Ion Caliman
Architect

Seattle, UNITED STATES

9+ years experience

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280€/day

PROPOSE A MISSION

MY EXPERIENCE

Amdocs

February 2007 - November 2008

Programming SME

• Software integration, KSH Scripting, BEA WebLogic, IBM WebSphere administration, DB Administration and PIL (Portfolio Integration Lab).
• Development of varied Amdocs solutions: Amdocs Self Service (AMSS) 7, 7.5, 7.5.1, Amdocs Ordering Management System (OMS), Amdocs Client Relationship Manager (CRM), Amdocs Partner Relationship Manager (APRM) and Unified Amdocs Security (UAMS).

ECS E

November 2008 - July 2009

Software Engineer

• Development and support for business software, including: financials, inventory, sales orders processing, purchase order processing, bill of materials and production costing, payroll and provident fund. Software developed with .NET, ASP .NET, Active Reports and SQL/server.

Computaris

July 2009 - April 2013

Sr Software Engineer

• Having strong experience in T-Mobile US production environment, with excellent debugging, telecom and customer facing skills provided excellent Tier-2 support onsite to T-Mobile US for long periods of time, successfully addressing customer requests and production issues.
• Instrumental approach to solving some issues that T-Mobile US experienced the day after PCRF was upgraded with some wrong information that T-Mobile US provided. The issue was solved and the fire died down significantly because of his support.
• Development of a PCRF solution on One-AAA framework resulting in more flexibility for Tier-1 operator in offering data services to subscribers.
• MKB implementation allowing subscribers to have flexible data plans, by providing separate access hours over the week. The greatest challenge was to accommodate subscribers across different time zones and daylight saving time while in roaming, or across US.
• Troubleshooting QoS Engineering issues and consultancy for varied improvements, and design solutions.
• Development and support for a complete solution for the successful delivery and go-live of a complete IN system which included SCP, SMSC, IVR, VMS, convergent billing system to a Malaysian MVNO using Celcom core network. Successful development of a Backup/Monitoring/Deployment solution for the whole system.
• Deployment, configuration and maintenance for charging engine filter to provide a content-metering function for network traffic accounting, content billing, network planning, network monitoring and data mining, it tracks user content transactions in real-time and forwards this information to a billing agent for further processing, rating, and invoicing.

Consultant

April 2013 - December 2015

LTE Packet Core Engineer

-tNetwork planning: deliver expert consulting, design and engineering support to customers for sales opportunities. Work with Cisco Sales and Professional Services to develop state-of-art customized wireless solutions for AT&T. Recommend technical solutions to improve customer operations. Provide technology consulting for internal teams (i.e. Product Management, Marketing, Sales). Convert external customer requirements into recommendations for new product features.
-tCustomer Support: represent the company’s technical capabilities and manage day-to-day technical needs of wireless customers. Support / enable customer specific solutions to grow business. Steer customer expectations according to product and network management capabilities. Drive successful new product introduction in partner labs and customer live network.

Cisco

December 2015 - September 2019

Solutions Architect/Network Consulting Engineer

Solutions Architec
Cisco PCRF (CPS) system design and implementation - develop wireless systems and product expertise by solving customer’s networking challenges.
Developing innovative network solutions by utilizing the leading edge wireless product line in high growth global telecommunications markets. Possessing technical expertise to design complex network solutions to stay ahead of the competition and champion change by challenging the status quo in support of new ideas.
● Network Planning (external) – deliver expert consulting, design and engineering support to customers for sales opportunities. Work with Sales and Professional Services to develop state-of-art customized wireless solutions for Carriers worldwide. Recommend technical solutions to improve customer operations
● Network Planning (internal) – provide technology consulting for internal teams (i.e. Product Management, Marketing, Sales). Convert external customer requirements into recommendations for new product features
● Customer Support – represent the company’s technical capabilities and manage day-to-day technical needs of wireless customers. Support / enable customer specific solutions to grow business. Steer customer expectations according to product and network management capabilities
● Beta Support – drive successful new product introduction in partner labs and customer live network
● Perform ad hoc analyses and tasks as assigned

Network Consulting Engineer

Cisco PCRF (CPS) system design and implementation - develop wireless systems and product expertise by solving customer’s networking challenges.
Developing innovative network solutions by utilizing the leading edge wireless product line in high growth global telecommunications markets. Possessing technical expertise to design complex network solutions to stay ahead of the competition and champion change by challenging the status quo in support of new ideas.
● Network Planning (external) – deliver expert consulting, design and engineering support to customers for sales opportunities. Work with Sales and Professional Services to develop state-of-art customized wireless solutions for Carriers worldwide. Recommend technical solutions to improve customer operations
● Network Planning (internal) – provide technology consulting for internal teams (i.e. Product Management, Marketing, Sales). Convert external customer requirements into recommendations for new product features
● Customer Support – represent the company’s technical capabilities and manage day-to-day technical needs of wireless customers. Support / enable customer specific solutions to grow business. Steer customer expectations according to product and network management capabilities
● Beta Support – drive successful new product introduction in partner labs and customer live network
● Perform ad hoc analyses and tasks as assigned

MY STACK

Languages
JEE, Shell Scripting, XML, Java, PL/SQL, SQL, UML, Unix Shell Scripting
IT Infrastructure
Unix, Linux
Analysis methods and tools
Ant, Junit
Environment of Development
Eclipse
Frameworks
EJB, JDBC, JMS
Databases
Oracle
Technologies
Servlets, Tomcat, WebLogic
Protocols
SOAP
Others
Software Design, Troubleshooting
Embedded and Telecom
Telecommunications
Application servers
WebSphere

Skills

JEEShell ScriptingXMLSoftware DevelopmentUnix

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