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 Αναλυτικές Πληροφορίες...

   PERSONAL INFORMATION JOHN CHATZISTAVROU στον τομέα του ΙΤ και με σταδιοδρομία, μεταξύ άλλων, σε ισραηλινές εταιρείες (Comverse, AMDOCS)

Αυτή η καταχώρηση έγινε: Πέμπτη 10 Νοέμβριος, 2016.
   Αναλυτική Περιγραφή

   JOHN CHATZISTAVROU

6 NIRVANA STR, 18547, NEO FALIRO

+30 2104819 011 +30 6974433472

hatzis@rocketmail.com

Date of birth 10/07/1965 | Nationality Greek

WORK EXPERIENCE

01/07/2015 –

BSS Application Support Specialist Amdocs Telecommunication Solutions S.A. 166A Kifissias Ave, 15126 Maroussi

▪ Daily 3rd level support, legacy code research, participation in Application Steering Committee meetings ▪ Problem analysis including debugging, if applicable, together with the end user and other IT teams; proposal of solution and problem resolution

▪ Making continuous improvements by challenging existing processes, automating repetitive tasks, training/guidance of more junior new resources or customers, cross code review, proposing, implementing, enforcing and maintaining software development standards

▪ Experienced with working in a dynamic international environment

▪ Escalation of issues to R&D and follow up

▪ Meeting SLA and KPIs as per contractual agreements

▪ Proactively analyze and recommend for system improvement, and produce any supporting documentation.

▪ Mediator between the customer, development team and any third party regarding system/software functionality, throughout the product life cycle

▪ Provide technical support of the Production, UAT & Development environments

▪ Provide release and defect management in conjunction with development team

▪ Provide on call and after hours-support as required

▪ Test planning and execution, validating and reporting

Business or sector Telecommunications

01/05/2006 – 30/06/2015

Operation Support Manager – RTBS / C1 Support Specialist Comverse Hellas Services Ltd. 58 Kifissias Ave & Delfon, 15125 Maroussi

▪ Managed Support Technical team; ensuring service delivery and over achievement of service level agreements.

▪ Maintain and improve on service level delivery through proactive reporting and trend analysis.

▪ Drive proactive/preventative maintenance to ensure service stability.

▪ Minimise the number of customer escalations through proactive/preventative service improvement and risk mitigation. ▪ Work closely with the Offshore Infrastructure Services Teams to form a joint delivery team.

▪ Directly interact with clients, customer managers, account managers, technical teams and third party suppliers in the delivery of good practice service delivery.

▪ Identify and prioritise improvements to the service and ensure implementation, working with suppliers on Continual Service Improvement Plan and providing regular updates to the Service Delivery Manager

▪ Define, drive and deliver continuous service improvement across the teams ensuring service evolution in line with management and customers' expectations.

▪ Support and be part of an Out of Hours Management escalation process.

▪ Ensure that service processes, documentation and governance are defined, maintained and followed for the service

▪ Managing the workload of the Support team setting priorities and allocating work packages to individuals

Business or sector Telecommunications

01/02/2003 – 30/04/2006

Interim Service Manager/Lead of Oracle Database Administration group

Atos Origin Hellas (ex. Schlumberger Hellas S.A.) , 18 Kifisias Ave & Gizi, 151 25 Marousi

▪ Interim management of a team of 15 IT

HW/NW/Desktop/DBA professionals. ▪ Overseeing and improving all operational systems, processes and controls in order to support customer BSS and satellite applications

▪ Based on product expertise and industry standard, provide the professional advice for better operation efficiency and customer experience

▪ Ensured all tickets were escalated and responded to in a timely manner

▪ Followed configuration, deployment and support procedures as defined and actively involved in improving these procedures.

▪ SAP R/3 4.6C Basis Administration

▪ Liaise with other customer and 3rd party vendors to provide assistance on issue resolution

▪ Assisted with all helpdesk requests, incidents and problems. ▪ Management and coordination of urgent and complicated support issues

. ▪ Acted as escalation point for all requests and incidents

. ▪ Trained, coached and mentored Support Specialists (Level 1/2)

. Business or sector Telecommunications

11/09/2000 – 31/01/2003

Analysis And Development Team Leader/Project Manager Telesoft Hellas S.A. , Sina 7, 151 25 Marousi

▪ Manage a team of Analysts/Developers supporting WIND Hellas billing system.

▪ Customer training

▪ Communicate with Customer and relevant stakeholders directly, and analyse the business development to align the business vision with customer

▪ Collecting, understanding, and transmitting the business requirements for the project. Translating these into functional specifications and detailed test plans.

▪ Analyse and document business processes, thereby reviewing, analysing and interpreting stakeholder requirements associated to specific business process elements.

▪ Controlling change - in accordance with quality standards (change-, release management)

• Carrying out activities in the area of (test) environment coordination and life cycle management. Business or sector Telecommunications

01/04/1998 – 30/8/2000 Senior Oracle Database Administrator / Telco Analyst

COSMOTE Telecommunications S.A, 64 Kifisias Str , Marousi ▪ Management of company’s billing database.

▪ Work in conjunction with development team and end users to analyse, design and implement new applications (i.e. blacklist control, fraud control, marketing reports etc). Preventive maintenance

▪ Installation and tuning of third party products (i.e. pre-paid platform).

▪ Participation in the migration for BSCS V3.03c to 5.21. ▪ Responsible for the migration of BSCS baseline setup.

Business or sector Telecommunications

01/04/1998 – 30/08/2000

Senior Oracle Database Administrator / Telco Analyst

COSMOTE Telecommunications S.A, ▪ Management of company’s billing database.

Work in conjunction with development team and end users to analyze, design and implement new applications (i.e. blacklist control, fraud control, marketing reports etc). Preventive maintenance ▪ Installation and tuning of third party products (i.e. pre-paid platform).

▪ Participation in the migration for BSCS V3.03c to 5.21.

▪ Responsible for the migration of BSCS baseline setup.

Business or sector Telecommunications EDUCATION AND TRAINING

2013 Comverse C1 Converged Billing

Comverse , Bulgaria ▪ Administration/Support on C1

2006 Comverse RTBS

Comverse, Israel

; Administration/Support of RTBS

2004 SAP Basis Administration SAP , India

▪ SAP Basis Administration

2002 Administration and development using Business Objects 5i Business Objects Education , Greece

1998 Oracle 8.0/7.3 Database Administration

Oracle , Hungary

Awarded Cerification

1998 Oracle Forms/Reports

Oracle, Hungary

PERSONAL SKILLS

Mother tongue(s) GREEK

Other language(s) UNDERSTANDING SPEAKING WRITING

Listening Reading Spoken interaction Spoken production

ENGLISH VERY GOOD VERY GOOD VERY GOOD VERYGOOD VERY GOOD

B1 FRENCH GOOD GOOD MODERATE MODERATE GOOD

B