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System & Network Engineer

The "Infrastructure & Systems" division is mainly dedicated to maintaining and developing digital services provided internally and to customers. He provides level 2 & 3 support for the services provided to the technical representatives in the field as well as the hotline, and participates in the smooth running of production start-ups, in a constantly evolving and complex environment. It is involved in improving existing processes and implementing new services.
As part of the development of our activity, we are looking for a system and network engineer, who will integrate as a manager, the "Infrastructures & Systems" department, which operates all the infrastructures (physical, virtualized, network, etc.) hosted by Omnitech Security, and the various digital services provided to customers.
It will have to monitor the performance of the various platforms, analyze major incidents, monitor the projects of the integration centres by providing assistance, expertise and advice, keep information related to its scope of activity up to date and propose development plans in its field.

Position based at our head office in Mérignac (33).

Your main mission will be to: 
- Design, modeling and preparation of customer & internal infrastructures. (System, Network and Storage); - IT consulting and support role on: security, best practices, design, architecture, etc;
- Improvement of internal business processes;
- Maintenance & improvement of computer equipment. (Infra client, server & Network) ;
- Support N2/N3 ;
- Analyze the impact on production;
- Ensure the operability of projects;


System infrastructures
- Management and improvement of the supervision of internal and customer infrastructures via Centreon;
- Microsoft systems management (AD, GPO, DHCP, DNS, IIS, DFS, Office 365);
- Management of VOIP telephony software 3CX; - Management of WEB servers (Apache, nginx, IIS) ;
- Good skills on Microsoft Windows operating systems (Desktop and Server);
- Good skills on UNIX/Linux systems; - Knowledge of DBMS (Microsoft SQL Server, MariaDB);
- Management & evolution of several VMWare vSphere clusters;

- Knowledge of the iSCSI protocol;
- Knowledge of storage technologies (RAID, partitioning, etc.);

Network and security
- Implementation and management of multiple basic network security elements:
► Firewall ;
► VPN (IPSec IKEv2, L2TP) ;
- Basic network management:
► IPv4 network ;
► DHCP ;
► Static routing ;
► VLAN ;
► STP and variants ;
► POE ;

Bonus skills 👍:

System infrastructures
- Event management via an ELK stack (ElasticSearch / Logstash / Kibana);
- Hardening of Windows / Linux system;
- Knowledge of Windows Server clustering management;
- Automated deployment of Microsoft (MDT/WDS) and PXE;
- Knowledge of mail management (Postfix);
- Scripting (PowerShell, Python) ;

- Storage optimization (Tiering, Write Policy, iSCSI Path, MPIO & Algorithm Selection) ;

Network and security
- Implementation and management of multiple advanced network security elements:
► NAXSI application firewall on nginx ;
► Public key infrastructures (Active Directory Certificate Services, Let's Encrypt, OpenSSL);
► Windows file system encryption (BitLocker);
► RADIUS server / NPS ;
- Knowledge of Fortinet's technologies
► FortiGate;
► FortiWifi ;
► FortiSSO ;
- Advanced network knowledge:
► LACP ;
► Network equipment management in CLI.

Personal skills:

- Advice and IT support for customers and various employees on the following areas:
► Security ;
► Good practices ;
► Design ;
► Architecture ;
- Stress and crisis management;
- Be positive;
- Ability to share knowledge and the state of the art in computer science.

The little extras
- Ability to apprehend and assimilate new technologies;
- Be welcoming and proactive;
- Technology watch;
- Curiosity and creativity.

Compensation and benefits:
- Fixed and variable remuneration from €35 to €45k depending on profile and objective
- Smartphone
- Laptop + iPad
- Very good mutual coverage (80% paid by the company)
- Restaurant tickets