- 13 years of web applications development (Ruby on Rails, Javascript)
- 3 years of Objective-C development
- 10 years of Java application servers/middleware and internet services infrastructure support
- 10 years of hosting infrastructure management, linux servers and internet services administration
Main expertise:
- Back end development: Ruby on Rails, Objective-C/Swift, API only apps
- Front end: Javascript(vanilla, Backbone, Angular, Vue), , HAML/SLIM, Bootstrap, material frameworks, SASS, webpack, single page apps
- Mobile development: iOS/Swift/Obj-C, Progressive web apps with javascript
- Test Driven Development (RSpec, js unit tests, jasmine, karma, mocha etc, cypress and nightwatchjs)
- Continuous integration, automated builds and deployments
- Middleware and web hosting infrastructure administration: (IBM Websphere Application Server 5, 6, 7 and 8, IBM Webshpere Portal 5, 6 and 7, IBM MQ series, IBM Websphere Commerce Server, Tomcat, JBoss, Webseal and WebLogic), Big-IP F5 appliances, proxy servers and load balancers
- Automation/Containers: Chef, Puppet, Ansible, Docker
- Server/services administration: Linux/Unix (Debian based distros), proxy servers, Apache/Nginx, DNS - Bind, Mail servers - Postfix
- Databases: Postresql, Mysql, Redis, nosql databases, db maintenance, clustering and replication
- Messaging queues: IBM MQ Series and RabbitMQ
- Auxiliary services: Solr, Elk Stack, Grafana
- Monitoring: Nagios, Icinga
- Shell scripting (bash/zsh)
- LDAP: IBM Directory Server
- Debugging: web communication protocols and TCP/IP networking suite, APIs debugging and testing
- Security: Web application and web services security assessment and pen testing, network and hosts intrusion detection, log monitoring, file integrity monitoring
- Performance tuning: Web application and web services performance tuning and testing, load testing
- PAAS: AWS, Heroku, Digital Ocean
- CVS: Git