Dumitru C.

Devops Engineer

Outsourcing
Advanced
Chisinau, MOLDOVA
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My experience

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UnifunJuly 2017 - Present

System & Network Administrator within a company specialized in the telecom field, providing VAS products to a wide range of international clients.
  • Installing and configuring Linux operating systems (Debian / RedHat).
  • Installing and configuring Windows operating systems (Windows Server 2008/2012/2016).
  • Automating environment builds and provisioning using virtualization, containerization and orchestration tools with Rancher, Docker, VMWare, XEN, ProxMox, AWS (EC2, Route53, ALB, ELB, S3, etc.).
  • Developing scripts for builds, deployment, maintenance and related tasks using Bash, PHP and Python.
  • Using, creating and configuring an Ansible automation system.
  • Installing and configuring web services: Apache, Nginx, IIS.
  • Implementing and maintaining IT network systems (OpenSWAN, StrongSwan, LibreSwan, IPSEC, NAT, DHCP, VLAN, STP, VTP, HSRP, ACL, etc.).
  • Diagnosing and solving all network problems.
  • Designing the architecture of the integration system for operators.
  • Integration of projects with operators (procurement of servers, delivery, remote configuration, installation of necessary software, etc.).
  • Maintenance, monitoring and configuration of VAS services (mobile advertising, SMS / MMS, Ring Tones, BeepCall, Balance+, IVRRadio, WrongIVR, USSD, etc.).
  • Maintaining and configuring VoIP (based on Asterisk and FreePBX, FreeSwitch).
  • Providing support to end users.
  • Creating technical documentation.
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Euro Credit BankSeptember 2016 - July 2017

Engineer (Department of Licensing and IT Monitoring) for a universal Bank performing all main types of banking operations represented in the banking market, including servicing of private and corporate clients, investment banking, etc.
  • Administration and maintenance of Active Directory, DHCP and DNS Servers, File Services, Network Policy and Access Services, Terminal Services, Web Services, Windows Deployment Services and Group Policy Services.
  • Windows Server 2003/2008/2012 administration and maintenance.
  • Designing, deploying and configuring virtualization systems (vCenter, vSphere, ESXi hosts).
  • Administration and maintenance of Microsoft Exchange 2010.
  • Installing, configuring, maintaining and updating servers, appropriate operating systems and applications.
  • Managing users and granting access rights to information resources.
  • Setting up, managing and maintaining the bank's telecommunication network.
  • Setting up measures to monitor and re-establish the operation and accessibility of telecommunication systems and networks.
  • Proposing and implementing solutions that aim to improve IT & C systems, resources and processes.
  • Providing technical and advisory support to employees belonging to other bank subdivisions.
  • Creating / reviewing technical disaster recovery plans.
  • Ensuring the security of the bank's ATMs and their isolation from the external network.
  • Managing and configuring Kaspersky Center, thus providing all workstations with an antivirus.
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ProcontextFebruary 2016 - August 2016

System & Network Administrator within an IT company based in Moldova, with strong, qualified team and flexible technologies for building services like:
- Interactive Voice Recognition Services;
- SMS services and votings;
- Application Software development for small and medium business.
  • Installing and configuring Linux operating systems (Debian / RedHat).
  • Installing and configuring Windows operating systems (Windows Server 2008/2012).
  • Maintenance, monitoring and configuration of VAS services (mobile advertising, SMS / MMS, ring tones, online gaming, etc.).
  • Installing and configuring web services (Apache / Nginx).
  • Maintaining VoIP in the local network (based on Asterisk and Free PBX).
  • Configuring and maintaining databases (Windows SQL Server 2008 / MySQL).
  • Database monitoring (SQL Server clustering; SQL Server back-up strategy; back-up of SQL Server 2008 databases; restoring SQL Server 2008 databases; authenticating and authorizing users; writing SQL queries).
  • Configuring and maintaining networks (IPsec, NAT, DHCP, VLAN, STP, VTP, HSRP, ACL, etc.).
  • Providing support for mobile operators such as UCELL, MTS, Beeline, Megafon, UCOM, Azercell, etc.
  • Integration of projects with operators (procurement of servers, delivery, remote configuration, installation of the necessary software, etc.).
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National Transfusion Blood CenterFebruary 2013 - January 2016

Head of the IT Department within the coordinating institution for the development of the Moldovan blood service, providing curative plasmapheresis services, blood testing services as well as quality control services for blood products and solutions.
  • Administration and maintenance of Active Directory, DHCP and DNS Servers, File Services, Network Policy and Access Services, Terminal Services, Web Services as well as Windows Deployment Services.
  • Windows Server 2003/2008/2012 administration and maintenance.
  • Providing technical support to more than 200 users.
  • Responsible for the evaluation and recommendation of new hardware and software.
  • Supervising back-up and disaster recovery operations.
  • Planning maintenance works for the computer engineering department.
  • Maintaining and expanding the local network.
  • Configuration and administration of Kerio Control (Firewall, VPN, QoS, Routing, etc.).
  • Installing and configuring SQL Server 2005/ 2008 R2 as well as clustering SQL Server.
  • Working with databases.
  • Planning a SQL Server back-up strategy and the back-up of SQL Server 2008 R2 databases.
  • Restoring SQL Server 2008 R2 databases, authenticating and authorizing users.
  • Writing SQL queries.
  • Administration and maintenance of periodic equipment (computers, printers, terminals, servers).
  • Developing the IT strategy.
  • IT budget planning.
  • Elaboration of network continuity plans and information systems.
  • Writing technical documentation (procedures, security and disaster recovery plan).
  • Managing the "cnts.md" site based on WordPress and updating the information on the Center's main site.

My stack

Spoken languages

RUSSIAN: Advanced
ENGLISH: Average
ROMANIAN: Native speaker
GERMAN: Beginner

Application Servers

Nginx, Apache, FreeSWITCH, IIS

Web Technologies

AWS, Web Services

DBMS

SQL Server 2008, MySQL, SQL Server 2005

Embedded and Telecom

Telecommunications

Languages

Python, Bash scripting, PHP

Protocols

DNS, VoIP, VAS, VTP, STP, DHCP

Technologies

Openswan, Kaspersky Center, Libreswan, Kerio Control, strongSwan

Miscellaneous

Technical Support, Teamwork, QoS, Rancher

Networks and Systems

Debian, Amazon Web Services EC2, Network administration, Amazon Web Services S3, Amazon Application Load Balancer (ALB), Amazon Elastic Load Balancer (ELB), Amazon Route 53, Windows Server 2008, Windows Server 2016, Windows Server 2012, Linux, Active Directory, Docker, VPN, Ansible, System administration, CCNA, Firewalls, Exchange Server, Vmware ESXi, VSphere, vCenter, Hyper-V, Free PBX, Asterisk, ACL, VLAN, Windows Server, Virtualization, RedHat, UNIX, VMWare, NAT, IPsec

My education and trainings

Bachelor's Degree in Optoelectronic Systems, Faculty of Engineering and Management in Electronics and Telecommunications - Technical University of Moldova, Chisinau.2012 - 2013