Daniel Sestrienka
Siebel Administrator and Operations at Neos Ventures- Claim this Profile
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Bio
Stephen Lomax
Daniel is a first rate Siebel Administator. His skills and knowledge of Siebel and OBIEE administration is very extensive, and his open, friendly and eager approach will ensure he will stay top of his game. He works excellently in a team, is able to articulate his thoughts and ideas to senior management with ease and is very well respected within the company. He is very trustworthy and is always willing to go the extra mile to get the job done, something that makes all the difference when you are supporting a complex production environment. I wouldn't hesitate to employ Daniel given the chance, and hope to work again with him soon.
Stephen Lomax
Daniel is a first rate Siebel Administator. His skills and knowledge of Siebel and OBIEE administration is very extensive, and his open, friendly and eager approach will ensure he will stay top of his game. He works excellently in a team, is able to articulate his thoughts and ideas to senior management with ease and is very well respected within the company. He is very trustworthy and is always willing to go the extra mile to get the job done, something that makes all the difference when you are supporting a complex production environment. I wouldn't hesitate to employ Daniel given the chance, and hope to work again with him soon.
Stephen Lomax
Daniel is a first rate Siebel Administator. His skills and knowledge of Siebel and OBIEE administration is very extensive, and his open, friendly and eager approach will ensure he will stay top of his game. He works excellently in a team, is able to articulate his thoughts and ideas to senior management with ease and is very well respected within the company. He is very trustworthy and is always willing to go the extra mile to get the job done, something that makes all the difference when you are supporting a complex production environment. I wouldn't hesitate to employ Daniel given the chance, and hope to work again with him soon.
Stephen Lomax
Daniel is a first rate Siebel Administator. His skills and knowledge of Siebel and OBIEE administration is very extensive, and his open, friendly and eager approach will ensure he will stay top of his game. He works excellently in a team, is able to articulate his thoughts and ideas to senior management with ease and is very well respected within the company. He is very trustworthy and is always willing to go the extra mile to get the job done, something that makes all the difference when you are supporting a complex production environment. I wouldn't hesitate to employ Daniel given the chance, and hope to work again with him soon.
Credentials
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Oracle Cloud Infrastructure 2019 Certified Architect Associate
OracleJul, 2020- Nov, 2024 -
Oracle Cloud Infrastructure Foundations 2020 Certified Associate
OracleJul, 2020- Nov, 2024
Experience
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Neos IT Services
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Germany
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IT Services and IT Consulting
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1 - 100 Employee
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Siebel Administrator and Operations
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Dec 2012 - Present
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IBM
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United States
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IT Services and IT Consulting
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700 & Above Employee
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Siebel CRM Consultant
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Apr 2012 - Dec 2012
- Design, Development and Test EIM migrations from legacy systems to Siebel 8.1.1.7- Deployment of the migration solution components (UNIX, Informatica, DB) across multiple environments including hot-fix deployments- Migration runs preparation, execution and results analysis (extraction and preparation of data, PL/SQL over legacy systems, transformations, reports generating etc)- Installation, configuration and administration of OBIEE 11g platform, Informatica 9.01, OBI Aps 7.9.6.3 and DAC 10.1.3.4.1 in Simple Install type on Red Hat Linux 5 x86_64- Responsible for Siebel deployments and releases accross multiple environments. Also patching Siebel application to latest Siebel upgrade on AIX 6.1 OS
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Centrica
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United Kingdom
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Utilities
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700 & Above Employee
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Siebel Administrator, Operations Analyst
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Sep 2010 - Mar 2012
• Setting up new Siebel 6.3 dev/test/pre-prod environments from the scratch that included installation and configuration of Siebel Web, Database and Application Servers• Provide expert 2nd/3rd line support for Siebel 6.3 dev/test/pre-prod/production environments running on Windows 2000 NT in accordance with agreed SLA’s for operational support, including being able to diagnose and resolve any issues within Siebel Database, Gateway, Web Servers and Application Servers. • Perform housekeeping, system monitoring, technical support, performance tuning and user administration support duties for disparate groups of developers and testers working on a number of environments• Liaise with the development team and release manager to implement new releases.
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Tata Consultancy Services
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India
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IT Services and IT Consulting
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700 & Above Employee
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Siebel/OBIEE Administrator, Application Support Analyst
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Dec 2008 - Aug 2010
• Client Phones4u• Installation and configuration of Siebel Servers, OBIEE and Informatica Servers/Applications on both Unix and Windows.• First point of contact for any Siebel and OBIEE environment issues, operational support of the production environment 24/7• Siebel server administration and release management across all Siebel/OBIEE environments • Client Phones4u• Installation and configuration of Siebel Servers, OBIEE and Informatica Servers/Applications on both Unix and Windows.• First point of contact for any Siebel and OBIEE environment issues, operational support of the production environment 24/7• Siebel server administration and release management across all Siebel/OBIEE environments
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Phones 4u
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United Kingdom
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Executive Offices
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300 - 400 Employee
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Siebel/OBIEE Administrator, 2nd level Application Support
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Dec 2007 - Dec 2008
• Monitoring and management of Siebel server tasks and components and ensuring their smooth operation - including modifying component settings, moving components between servers, running tasks and modifying multithreading settings when required.• Involved in tactical Siebel and Oracle BI releases, responsible for application data administration and configuration.• 2nd level Siebel application support. • Monitoring and management of Siebel server tasks and components and ensuring their smooth operation - including modifying component settings, moving components between servers, running tasks and modifying multithreading settings when required.• Involved in tactical Siebel and Oracle BI releases, responsible for application data administration and configuration.• 2nd level Siebel application support.
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Accenture
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Ireland
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Business Consulting and Services
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700 & Above Employee
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Siebel Application Support
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Feb 2007 - Nov 2007
Siebel 7.7 2nd line support, client BASF
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Siebel Migration Specialist
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May 2006 - Feb 2007
Design, development, and test of migrations into Siebel 6.3 according to client requirements. Technical knowledge of EIM.Client: Deutsche Telekom
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Education
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1996 - 2001
University of Zilina
MSc, Telecommunications
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