Summary
Linux system administration (RHEL/CentOS/Debian), installation configuration and maintenance of various web hosting services: mail/web/database servers, python and bash shell scripting, backup, security, network setup and troubleshooting.
AWS Cloud solutions (aws.amazon.com)
Grid servers installation and maintenance (www.3tera.com)
Specialties
Deploying and administration of complex lamp/e-mail systems.
Linux servers configuration, tweaking and maintenance.
Network troubleshooting and setup.
Xen virtualization.
System architect.
Work Experience
Developer Support Engineer II
Amazon.com
Public Company; 10,001+ employees; AMZN; Internet industry
July 2011 – Present (1 year 11 months) Ireland
Amazon Web Services
EC2 Support Operations, troubleshooting Linux environments, networking stacks, analyzing metrics and improving tasks.
Technical support, best practices and system architect for customers, assistance in moving customer’s environments into AWS cloud.
Troubleshooting scenarios with products such as EC2, VPC, S3, RDS.
Linux system administration and python/bash scripting.
Building internal tools for troubleshooting purposes.
VPN solutions based on Linux and Cisco.
Mentoring new hires.
Senior Cloud hosting engineer
EUnet / DNSEurope
Partnership; 51-200 employees; Internet industry
2006 – July 2011 (5 years) Serbia
My main achievements here were installation and maintenance of Private Cloud systems for customers, planning and deploying complex production environments based on Linux.
Private Cloud systems based on CA Applogic (ex-3tera) platform, with hardware nodes/network equipment create one big system called Grid. Customers have ability to build complex virtual environment on the top of Grid and use many virtual appliances which represent SaaS and PaaS, I was their system architect and consultant.
Deploying various systems for customers such as web servers, database clusters, complex e-mail systems, load balancers, virtual NAS storage’s, backup systems.
My best project was creating complex e-mail system template on the top of CA Applogic environment, which was one of first SaaS templates in the Cloud market in Serbia.
Also, I was attending many meetings with our sales teams and customers as technical assistant/consultant.
My duties were:
- Installation of CA Applogic Grids (Private clouds) within 1 working day after customer’s order
- Maintenance and patching Grid nodes
- Maintenance and patching shared Linux hosting servers mainly through SSH but also via GUI for Ensim, Plesk and Cpanel.
- Deploying complex e-mail servers based on Linux+Postfix+Spamassassin+Mysql+Dovecot+Amavisd+webmail+iptables+backup
- Managing Xen Dom0/DomU virtual machines/networking devices
- Deploying web/database servers, backups, optimizing servers.
- Python/Bash scripting
- Security, detection and cleaning servers root-kits, applying best practices
Technical Support engineer
EUnet
Partnership; 51-200 employees; Internet industry
2004 – 2006 (2 years) Serbia
Technical support engineer in EUnet, biggest ISP in Serbia.
My duties were:
- technical support for various range of customers, from small individual to medium and big companies
- monitoring main ISP networking core systems
- planning/installing networks at customer facilities and offices
- structural cabling for various purposes.
- writing bash scripts for our internal usage (reports, monitoring).
This was my first job and it gave me great experience with many problem-solving situations and also very good understanding of how big ISP works.