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3.2
3.2
86%
$20 USD / Hour
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Bulgaria (6:06 AM)
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Joined on October 25, 2009
$20 USD / Hour
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Greetings, I am a systems engineer and IT consultant with more than 9 years of professional experience. During the years I gained many skills, but the ones I am proud of are the self discipline and deep technical analyzing & problem solving thinking.
Very good communication but was unable to complete the project, apparently it was not his projects but I still recommend this freelancer !
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Work delivered like promissed. Great communicator, on time and really professional. Would definitively hire again.
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Nikola is a delight to work with. Meticulous project planning, time taken to understand the extact nature of the problem(s) we had, careful layout of the proposed solution and then thorough carrying out of the agreed programme of work. Simply excellent; very happy, high levels of customer care and support. We will certainly be using him again.
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Very friendly and fast - uncomplicated - will come back to you for further projects.
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very good communication, very good skills, will definitely use again!
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Experience
Cloud operations manager
Aug, 2016 - Aug, 2017
•
1 year
SpotMe
Aug, 2016 - Aug, 2017
•
1 year
Well balanced technical & management position requiring variety of soft skills Coordinating and writing internal processes and procedures. Setting relevant goals & objectives to the team and it's members. In charge of the Information Security team in the company (formal CSO) Doing regular employee security awareness trainings Ensuring smooth operation of the infrastructure In charge of a very complex hiring process including background checks, pre-screening processes and other.
Aug, 2016 - Aug, 2017
•
1 year
Safecharge
May, 2013 - Aug, 2017
•
4 years, 3 months
Senior Systems Administrator
May, 2013 - Aug, 2017
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4 years, 3 months
- Responsible for a complex infrastructure which is providing online payment system. - Ensuring maximum availability of the payment system and all corresponding servers behind. - Providing 2nd and 3rd level support, including out of working hours. - Administering Glassfish servers, Apache, MySQL, ldap ,mail & name servers. - Organising backups and their recoverability. Deploying applications, debugging errors and application behaviour. Administering live and non-live RHEL linux environments.
Technical Team lead
Feb, 2015 - Aug, 2016
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1 year, 6 months
As a technical team leader of the 2nd level it team at Safecharge, I was responsible for a team of 5 it professionals, working on 24/7/365 shift pattern and ensuring maximum system availability. - Guiding team members and providing them with the needed technical training, writing technical documentation and providing availability reports. - Leading the hiring process for the team - Doing yearly PDRs, setting goals & objectives
May, 2013 - Aug, 2017
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4 years, 3 months
Systems Administrator
Aug, 2011 - May, 2013
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1 year, 9 months
Landmark Information Group
Aug, 2011 - May, 2013
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1 year, 9 months
Monitoring all company websites and other server systems to ensure smooth functioning and availability. Diagnosing and deciding about the most appropriate solutions on disasters, taking actions required in ensuring the availability of key applications. Ensuring all systems backups are undertaken and completed successfully. Managing and applying systems updates. Regularily analysing of systems to ensure they are capable for future planning capacity and functionality. Administering a large number of web
Aug, 2011 - May, 2013
•
1 year, 9 months
Education
Nov Bulgarski Universitet
2009 - 2013
•
4 years
Telecommunications Bachelor

Bulgaria
2009 - 2013
•
4 years
Qualifications
Cisco CCNA
2007
Cisco
null
2007
Publications
DNS Poisoning
Nikola Kolev
What is DNS Spoofing / DNS cache poisoning? Each ISP gives users DNS server. If you've already read the article above, you know that DNS-s are like translating machines. DNS-s on your provider does not know all the domain names that exist, instead they consult other DNS servers higher up in the hierarchy. If they do not know the answer, forward the request up and so leads to the top level. To date, the top level are 13 servers that are perhaps the most important on the Internet. They are called root ser
Certifications
F
Foundation vWorker Member
Verifications
On time
69%
On budget
100%
Accept rate
100%