Stéphane Theiller

Je suis quelqu'un qui a passé pratiquement sa carrière dans l'industrie, commencé en tant que technicien réseau pour finir désormais Manager IT / OT Infrastructure. J'aime les challenges et j'en ai besoin pour pouvoir m'épanouir, même si je match pas à 100% avec une job description, je ferai mon max pour convaincre l'assemblée que je suis tout de même la bonne personne, car je suis un “hard worker” pour me mettre à niveau et couvrir le gap en question.  

Since November 2021 – Till now       Armacell (LU/Mamer)

Head of IT Operations and Infrastructure

• Following a CyberAttack in November 2020, the previous infrastructure team spent almost a year getting the IS back up and running.
• I was responsible for rebuilding the corporate infrastructure team from scratch, hiring people, or even finding the right candidates internally.
• Unfortunately, but necessary, I had to let some people go because of the IT reorganisation.
• Gathering the big picture of the current situation, almost nothing, no documentation, no backup, no monitoring, no standard, no corporate network....
• Drawing up the roadmap for the next coming years, in order to be close to best practices provided by the market in each area.
• Managing 20 people located in EMEA, AMER and APAC (Regional IT Operation Managers, project managers, network / security, cloud AZURE, systems, service desk...)
• Managing future investments CAPEX vs OPEX for the whole company.
• Ongoing technical issues: moving servers / applications from on-prem to AZURE cloud, setting up ZSCALER, MFA, SD-WAN, LAN, Industry 4.0, Wireless, CISCO MERAKI, global ISP...
• Management of all global contracts with partners, maintenance, invoices.
• Technology watch around Cloud, Backup, Hyperconverged based on Nutanix, New generation of monitoring platform based on ThousandEyes, Industry4.0, OT, IoT, IIoT....
• Handling of all issues around BCP / DRP (cloud / on-prem oriented)

May 2021 – October 2021         EB-Trans Informatique (LU/Rodange)

Head of IT Infra / IT Manager Europe

• Managing IT support team (4 people, TeamLeader included)
• Managing the OBC team (2 people) On-Boarding Computing, addressing all the IT materials installed into each truck of the company (3000 Trucks)
• Managing infrastructure team (4 people) specialized in AD, AWS, business applications, LAN, WAN, WIFI, Security, SD-WAN, Fortinet, Monitoring….
• In charge of all IT Architecture (VOIP, MPLS, Apps, LAN, WAN, WIFI, AWS Cloud, thin clients, collaborative tools, mobile phone)
• Handling all contracts, invoices, technology watch, negotiation with C-level and partners, huge projects (Migration to ActiveDirectory, MPLS for France sites, SD-WAN Fortinet, LAN design based on ANSSI best practices, AWS Server migrations from WinServ 2008 to 2019), apps deployement, SAP Migration based on AWS EC2 / RDS.

May 2018 – May 2021              CEBI – International (LU/Steinsel)

Network and Security / Operations Manager

• In charge of whole Network / Security and Telecom architectures for all worldwide CEBI sites.
• Defining IT strategy for next coming years with CIO.
• Leading Operations teams (weekly meeting, team building / working, KPI, communication…)
• Leading ITIL project (CMDB, Ticketing tool, Change management …)
• Leading technical projects (Monitoring, LAN based on ANSSI best practices, WAN “SD-WAN”, Firewall/Proxy-Cloud, Wireless, OOB, Industry4.0, new site deployment from scratch…)
• Handling TISAX certification, MFA for remote workers.
• Managing many partners which are involved in projects or technology watch.
• Handling invoices, orders and contracts related IT Operations.

August 2017 – May 2018          EBRC - Luxembourg

Senior Network and Telecom Engineer – Project Manager

• Managing all kind of network and telecom equipment (LAN, WAN, ScrubbingCenter communication, Wireless, IP-Telephony…)
• In charge to manage 3 physical Datacenter that belongs to EBRC (Racking, cabling, Fiber, copper, meet-me room, carrier room, network setup…)
• Answers to RFPs (Design “ based on multiple DCs” pricing, sizing rack, patch panel)
• Add customers into DCs following their request.
• Handling tickets from level2 to 3
• Project Manager

August 2016 – August 2017      System Solutions - Luxembourg

Network and Security Engineer

• Network and Security consultant.
• Audit at customer side, in order to advise them how to improve their own IT architecture.
• New network setup based on HPE switch Layer 2 and 3, Firewall UTM SOPHOS, Fortinet.
• Wifi installation based on Aruba / SOPHOS.
• Troubleshooting at customer side related (Switching, routing, security, Wireless).
• Datacenter management (monitoring, design, routing, troubleshooting, switching, firewalling).

September 2014 - August 2016 Telindus ICT – Luxembourg

Network and Security Engineer

• Responsible for customer integration in both datacenter (from initial design to final tests, to confirm that all fits with the customer expectations)
• Handling all level 2 and 3 customer issues, customer requests and maintaining all network and security equipment (ITIL – ISO27001).
• Handling a multi-context environnement based on CISCO VRF technologie. 
• Technical project manager and advice customers to pick up the right design based on their requirement.
• Management of an international client portfolio.

April 2005 - August 2014          OMYA SAS – Omey (51/Marne France)

Global Network and Telecom Engineer: 2008 to 2014

• Management of network and Telecom international projects, from initial phase to the deliverable.
• Security improvement for industrial networks based on Checkpoint Firewall (ACL CISCO replacement), all of them are managed by a single point (SmartDashborad)
• Setting up a WAN flow optimization for each site of the Group (about 200 sites), based on Riverbed technology.
• Setting up a global Wireless architecture based on CISCO brand (hardware clustering + CISCO Prime)
• Level 2 troubleshooting (LAN / WAN) for all sites located in EMEA (50 sites).
• Writing all standard documentation for LAN / WAN and telecoms.

                                     Network administrator : 2006 to 2008

• LAN / WAN Project manager: monitoring (WhatsUpGold), LAN deployment based on CISCO stuff like (6500, 3750X, 2960S…).
• Telecom Project manager: network and telecom partner management, contract management (GSM, PBX, ePBX), ISP management for EMEA (Orange, AT&T, Proximus, Deutsch Telekom, BT)

                                     Network LAN technician: 2005 to 2006 

• Re-built all LANs for whole 20 french sites.
• Management, segregation and monitoring network, all actions was documented and validated by site director, user support, VPN client installation (Fiberlink), MPLS deployment for Omya worldwide (based on AT&T ISP).

October 2004 - April 2005        CPS Concept – Marne, Aube et Haute Marne

Computer technician for health professionals:

Network hardware installation, health software, user training, monitoring and maintenance.

 May 2002 - July 2004                Boehringer Ingelheim France – Reims (51) « Alternation »

Technical project manager, implementation of VPN solution

Network & Telephony Administrator

March 2001 - May 2002            MCG France SA – Rethel (08)

Head of store in Computer Assembly. (Informatiq’ Discount.)

Sept 2008 – Sept 2010               Telecom ParisTech – Paris (75)

                                                   Specialized Masters in Network Architecture (bac+6)

                                                   Professional Thesis: WAN stream optimization