كريشنا كومار, System Developer / Administrator

كريشنا كومار

System Developer / Administrator

one.com

البلد
الهند
التعليم
ماجستير, engineering
الخبرات
7 years, 2 أشهر

مشاركة سيرتي الذاتية

حظر المستخدم


الخبرة العملية

مجموع سنوات الخبرة :7 years, 2 أشهر

System Developer / Administrator في one.com
  • الهند - دلهي
  • سبتمبر 2012 إلى سبتمبر 2013

One.com
1+ year working experience as Unix System Developer/Administrator in one.com to develop management tools, manage host servers
Duration -September 2012 to present.

Project : Custom tools \[ One.com \]
Jabber Tracker: One.com have several department to communicate for live customer issues through messenger. Jabber tracker provides and efficient mechanism to raise ticket against respective Department and get solution immediately.It provides features like Issue creation, assign, reopen, close, search, report, Group list announcements etc.
Fsmon/diskusage :One.com provide internet services like WebHosting, Mail Servers, Cloud Drive and other web applications, hence it is necessary to calculate customer webspace size in near real time manner.Achieving near realtime we have created and implemented Fsmon and diskusage for NFS.
Myspamcheck: MySQL spam detection tool with out using mysql db connection, using index file analysis
Logtrace : timely attack detection for each server based on log and velocity of size/content increase.
WebAnalyze: Analysis of web server log, load and strace of process to find the pre defined pattern of execution, find the problem and apply the defined solution.
Technologies: Java, PHP, XMPP, C, Perl, Bash.

Project : Bitfinder \[ one.com \]

Created a backup restore system for customers who hosted their domains in one.com. The system handles the restore of email account, web content restore, mysql restore, Address books, other web applications, Cloud drive data.
Technologies: PHP, pgSQL, eclipse.

Project : Sysmail \[ one.com \]

Created a centralized cron mail processing and reporting system which receives cron mails generated from servers are then processed and stored in SQLite database (Week basis).Using this stored data for report on sever needed update, server health, process failure details etc.
Technologies: PHP, SQLite3, eclipse.


DEV/OPS ACTIVITIES

One.Com server administration

One.com is an Internet service provider involves Domain registration, Web hosting, Mail Accounts, Cloud drive and other web applications. One.com have 2000+ Servers including Web, Database, Mail storage, SMTP, Cloud, Application servers, Varnish cache, Data Storage, Load balancer, DNS, Central Admin Database, Customer Database, CRM Jboss etc. One.Com believe in open source strategy management, all application running in open source software. Servers are running on Virtualization environment.
Administration need knowledge in all areas of respective server management and issue resolution if required. Any issue in servers have to be resolved quickly as possible before customer get impacted. Daily basis administration task involves resolving customers issue, DDOS/Botnet attack detection and block, Prevent mail spamming, Database spamming. Create mail/mysql vservers/LXC servers and move customers for load balance etc.

Technologies: PgSQL, nagios, Thrunk, Perl, Apache, PHP, dovecot, Varnish etc.

Web Developer, Mobile application developer في Government Police Department
  • الهند
  • يوليو 2012 إلى سبتمبر 2012

Cyber cell Police

Project \[nonprofit\]: Cyber Cell \[Government of Kerala\]

I have finished a project of cyber cell, The site have several functional modules for management of several requirements, mobility oriented data interactions etc. Real time Suspect evaluation, incident reporting using mobility.
Technologies: PHP, MySQL, Android SDK, eclipse, xampp.
Duration - June 2012 to Sep 2012.

Senior System engineer في Devsquare [ contract for infosys ]
  • الهند
  • نوفمبر 2009 إلى يونيو 2012

Devsquare \[ Infosys contract \]
2 year 10 month working experience as contract employee of Devsquare online services private ltd and worked for Infosys. Worked as intranet Website developer for Infosys in .net technologies
Duration -1 December 2009 to June 30 2012.

Worked as Senior System Engineer with experience in designing, developing and testing Web Application.
Project: eLocator \[Infosys\]

Web based application for E&R department created in ASP.net, Google map API’s. it is a project for managing employees certifications, examinations, error reports, various reports required for management to evaluate invoice etc.
Technologies: C#, Visual Studio 2008, ASP. Net, Google Map, Ajax, Google Map API, SSRS

System Engineer في Infosys
  • الهند
  • أغسطس 2006 إلى نوفمبر 2009

Infosys
3 years 3 months working experience in Infosys technologies as a permanent employee with role of System Engineer
Joined in Windows Testing technologies, and then moved to an i18N project, after a few years worked with Microsoft tool development and intranet website development.
Duration - 7 August 2006 to 30 November 2009.

Worked as System Engineer with experience in designing, developing and testing Web Application.
Worked on Microsoft Windows Operating system sustenance and engineering. Involved in different areas of test automation and testing on Operating system components.
Worked in product internationalization analysis and testing.

Project: KMART

Worked with a retail web application for KMART, I had assigned to fix the bugs on web client side communication/UI issues in www.mygofer.com
Technologies: Java, WCS, Eclipse, jQuery.

Project: Shared Lab Portal \[Microsoft\]

I had involved in development of website for coordinating testing activities of Windows operating system components. Portal enables user to manage jobs for scheduling on machines with testing requirements, like install OS \[w2k, xp, vista, LH, win7\], install updates/Hotfix, run the defined test sets in operating system. The portal using WTTOM interface for communicating with machines in network.
Technologies: C#, Visual Studio 2008, ASP. Net, SQL Server, Ajax, WTTOM.

TESTING PROJECTS

Microsoft windows sustained engineering (Windows SE) \[Microsoft\]
Project: Windows SE

The windows sustained engineering group is involved in maintenance of windows operating systems. The Project involves testing and test automation of various components for service packs, security patches & critical updates of Windows NT, W2K, XP, WSO3 and Vista Operating System, WSO8. Quality assurance for the fixes is very important before the operating system patches (Service packs) are released worldwide. The activities include system test planning, system testing, and liaison with core and sustained engineering teams for test execution on security system components.
I had involved in automation testing and manual test cases execution of various components for different service packs. I prepared Patch analysis report for a fix and decide what test traces need to be run to cover security holes. I was involved in triage and analysis of OS bugs and their follow-ups with developers. I developed automation's of test bed setup using VB scripts, C#, Mita.

Technologies: Windows Scripting, Jscript, VB script, WTT


Project: CAI18N \[Computer Associates\]

I had worked with a testing team for the project of internationalization of eHealth one product from CA, product having around 6 million lines of code, and we have to support internationalization in 7 more language, I had executed i18n testing in windows as well as Linux environment and prepared report based on the outcome.

Technologies: C++, Java, Linux Shell scripting

الخلفية التعليمية

ماجستير, engineering
  • في Kerala University
  • سبتمبر 2012

Master of computer application and science TKM College of engineering Kerala University Sep 2012 80.6%

بكالوريوس, Physics
  • في University College
  • أبريل 2005

Project work Computer science Electronics Optics Applied Physics Mechanics Maths Chemistry

الثانوية العامة أو ما يعادلها, Science
  • في RKD NSS HSS
  • أبريل 2002

+2 Kerala HSC March 2002 76.8%

الثانوية العامة أو ما يعادلها, Science,Maths,english
  • في AMHSS
  • مارس 2000

SSLC school top scorer award

Specialties & Skills

Risk Analysis
Project Management
System Design
System Architecture
Application Development
Testing
PHP, MySQL, PgSQL, Laravel
Apache, Postfix, Dovecot
MS SQL, SSRS
ASP.NET