Vishwa Ranjan

Highly Experience(14+ years) Enterprise Linux system administrator, system engineer, cloud designer, DevOps and AWS expert and architect. Excellent response time and high client retention ratio. 

Summary of Skills:

Looking to provide data driven insights to companies and people using applied mathematics, statistics, econometrics, artificial intelligence & machine learning. My primary language is Python but have also used extensively R, E-views and Excel.

Previously worked for a Fortune 500 tech company (Symantec in internet security) doing business statistics and data analysis.

A graduate in Computer Science and Engineering in 2006 and later did MBA with specialization in Financial Management. Have worked extensively on modelling and forecasting of energy and finance data both using traditional statistical methods and talk of today i.e. machine learning and artificial intelligence. Working on getting some of my important works published in reputed academic journals.  Looking to help people and companies gather and interpret data using mathematical and statistical techniques.

Brief Background:

In recent years, I have been providing consulting in a variety of analytic fields including technology, healthcare, gaming, financial, legal (patents and data research for court cases), and others. I make sense of your data so you can spend more time making informed decisions or asking deeper level questions.

Since college, I have tutored a wide variety of people in maths from middle school to the MBA level. I have covered subjects including, calculus, statistics, and multi-variable regression modelling.

15 years of programming and system administration experience. 

Expert in R, Python, E-views, IBM SPSS, Matlab.

Worked extensively on analysis and forecasting of economical, financial and energy data.

In process of publishing 2 research papers on usage of machine learning techniques in time series forecasting. 

Expert in various univariate and multivariate forecasting techniques such as ARIMA, VAR and LSTM.

Would love to help university students/researchers on their academic projects, research papers, data analysis etc. 

Primary Area of Work includes the following :

***LAMP/LEMP(Nginx) administration and server security hardening (Ubuntu, Debian, Centos/RHEL, HAProxy, Ruby deployment, DevOps, Python/Django deployment DevOps, Nagios, fail2ban, CloudFlare, Elasticsearch, Kibana)

*** Master in Linux troubleshooting

***Google page speed

***Nagios monitoring

***Docker, Docker-compose, Docker swarm, Let's encrypt

*** Varnish cacheing (Magento, WordPress...) w/ SSL

***Amazon Web Services - AWS expert/architect/design (EC2, ECS, VPC, RDS, S3, Route53, Cloudfront, Elastic Load Balancer, AutoScaling, etc..)

***DDoS mitigation and prevention

*** Nginx rewrites

***VPS providers: Linode, Rackspace, Amazon(AWS), MediaTemple, HostGator, Cloudflare, MaxCDN, CloudFront, NameCheap, GoDaddy, DigitalOcean, EC2, Bluehost

***VPS administration

***AWS EC2 administration

***VMware vSphere

*** fail2ban

*** CPANEL, PLESK, WEBMIN, SHELL/SSH administration

***proftpd, pure-ftpd, pure ftp

*** DNS, BIND, PowerDNS

*** SSL certificates

*** Site migration

*** Network troubleshooting