Matthias Schmälzle
Subproject Manager / Head of Monitoring
Experience
Subproject Manager / Head of Monitoring
IT service provider (Berlin/Kolbermoor)
- Subproject Manager / Head of Monitoring for facility management and handling operational project parts as well as coordinating operations
- CheckMK consulting: central monitoring infrastructure with CheckMK master and distributed CheckMK satellites
- Implementation of advanced monitoring approaches, integration of new plugins and customization of the CheckMK agent
- Graphic representation of performance metrics with InfluxDB and Grafana, creation of NagVis/Grafana templates and dashboards
- Monitoring of Linux/UNIX/Windows systems and active components using CheckMK agents/MRPE as well as hardware monitoring via SNMP
- Development of monitoring plugins based on Bash scripting
- Inventory and cross-disciplinary analysis for application-specific monitoring
- Concept design, testing and documentation for integrating CheckMK status messages and performance data into a higher-level umbrella system (Data Leak)
- Technical and conceptual point of contact
Consultant for Icinga2 and Grafana
Telecommunications service provider (Bonn/Hannover/Nuremberg/Prague)
- Consulting on an existing infrastructure and connecting DataLeak third-party systems
- Building a central monitoring infrastructure with Icinga2 master and distributed satellites
- Advanced monitoring integration, plugin integration and customization of the Icinga2 agent
- Graphic performance analysis with Graphite, Elasticsearch and Grafana; creating Icingaweb2/Grafana templates and dashboards
- Monitoring of Linux/UNIX systems and active components using NRPE, hardware monitoring via SNMP
- Development of Nagios/Icinga2 plugins based on Bash scripting
- Concept design, testing and documentation for integrating Icinga2 and Zabbix status messages into a higher-level umbrella system
- Technical and conceptual point of contact
Consultant for Grafana, InfluxDB and MySQL/MariaDB
Chemical company (Staufen)
- Creating Grafana dashboards based on MySQL/MariaDB, InfluxDB, Monitos monitoring system and OTOBO ticket system
- Performance analysis and extension of the Monitos monitoring system
- Technical and conceptual point of contact
Network technician
Security manufacturer (Achern)
- Replaced HP ProCurve switches with Aruba switches including upgrades and flashing
- Installed and configured the switches with VLAN, Spanning Tree, trunking, port security, etc.
- Created documentation and reports
- Integrated the switches into Nagios monitoring and adjusted hardware monitoring
- Knowledge transfer, briefing, training and documentation
- Technical and conceptual point of contact
Consultant for Grafana and InfluxDB
Steel manufacturer (Salzgitter)
- Setting up and hardening Linux systems for Grafana and InfluxDB
- Installing and configuring Grafana and InfluxDB
- Integrating and creating existing and new Grafana dashboards with addons/plugins, connecting InfluxDB v1 and v2
- Knowledge transfer, briefing, training and documentation
- Technical and conceptual point of contact
Consultant Icinga2 and Grafana
OPITZ CONSULTING Deutschland GmbH (Gummersbach)
- Consulting and building an Icinga2 and Grafana infrastructure with a central master and distributed satellites
- Installing and configuring the Icinga Director frontend with CMDB integration (NetBox) and JSON import of host and device objects
- Cross-functional inventory and analysis for application-specific monitoring
- Using Icingaweb2 as a user frontend including notification integration and role separation
- Advanced monitoring integration, plugin integration and customization of Icinga2 agents
- Graphical performance analysis with InfluxDB and Grafana; creating templates and dashboards
- Monitoring Windows/Linux/UNIX systems and hardware using NRPE, NSClient++, SNMP
- Developing Nagios/Icinga2 plugins with Bash scripting
- Automating and syncing between Icinga Director and NetBox, migrating legacy configurations
- Workshops, presentations and documentation; moving configurations into production systems
- Technical and conceptual point of contact
Consultant for monitoring solutions
Data center operator
- Analyzing and consulting on existing monitoring installations
- High-level analysis, inventory and cross-functional analysis for application-specific monitoring
- Developing a monitoring tool overview and a high-level concept with recommendations for central infrastructure
- Developing concepts for failover protection of the monitoring infrastructure
- Creating system manuals, overview diagrams and infrastructure diagrams with Microsoft Visio
- Documenting existing and future monitoring infrastructure
- Graphical performance analysis with Graphite/InfluxDB and Grafana
- Building a monitoring test environment
- Technical and conceptual point of contact
Consultant Icinga2 and Grafana
Telecommunications service provider (Bonn/Hannover/Nuremberg/Prague)
- Advising on an existing Icinga2 and Grafana infrastructure
- Installing and configuring the Icinga Director frontend with JSON import of host objects
- Cross-functional inventory and analysis for application-specific monitoring
- Using Icingaweb2 as a user frontend with HTML email notifications and role separation
- Advanced monitoring integration, plugin integration and customization of the Icinga2 agent
- Graphical performance analysis with Graphite and Grafana; creating templates and dashboards
- Monitoring Linux/UNIX systems using NRPE, hardware monitoring via SNMP
- Developing Nagios/Icinga2 plugins with Bash scripting
- Technical and conceptual point of contact
Consultant Icinga2 and Grafana
IT service provider for an international industrial company (Freiburg im Breisgau)
- Advising on an existing Icinga2 and Grafana infrastructure with a central master and satellites
- Cross-functional inventory and analysis for application-specific monitoring
- Using Icingaweb2 as a user frontend with role separation and notifications
- Advanced monitoring integration, plugin integration and agent customization with certificates
- Graphical performance analysis with InfluxDB and Grafana; creating templates
- Monitoring Linux/UNIX and Windows systems using the Icinga2 agent, hardware monitoring via SNMP
- Developing Nagios/Icinga2 plugins with Bash scripting
- Technical and conceptual point of contact
Consultant Icinga2
fliix (Gäufelden)
- Consulting and building a central Icinga2 monitoring infrastructure with satellites
- Updating the Icinga2 configuration generator based on an Excel sheet to define contacts, groups and hosts, including CSV import
- Creating Graphite templates for Icingaweb2
Consultant Neteye4 (Icinga2)
Energy supplier (Frankfurt am Main)
- Set up a monitoring infrastructure with Neteye4 as a Pacemaker cluster and satellites
- Cross-functional inventory and analysis for application-specific monitoring
- Used Neteye4/Icingaweb2 as the user frontend with role separation
- Advanced monitoring integration, plugin integration, and agent customization with certificates
- LDAP authentication for Neteye4/Icingaweb2
- Graphical performance analysis with InfluxDB and Grafana
- Monitoring of Linux/UNIX and Windows systems using the Icinga2 agent, hardware monitoring via SNMP
- Development of Nagios plugins with Bash scripting
- Technical and conceptual point of contact
Consultant ICINGA2
Voucher provider (Hamburg)
- Set up and updated a central ICINGA2 monitoring infrastructure with a master and distributed systems
- Cross-functional inventory and analysis for application-specific monitoring
- Used Thruk as the user frontend with role separation
- Advanced monitoring integration, plugin integration, and NSClient++ customization with NRPE3 certificates
- LDAP authentication for Thruk and ICINGAweb2
- Installed and configured Graphite for performance analysis
- Monitoring of Linux/UNIX and Windows systems as well as hardware via SNMP
- Development of Nagios plugins with Bash scripting and an Excel-based configuration generator
- Technical and conceptual point of contact
Consultant Icinga2
Drugstore group internal IT (Karlsruhe)
- Maintaining and expanding an existing central Icinga2 monitoring infrastructure with test and production systems
- Cross-functional inventory and analysis for application-specific monitoring
- Provided service checks based on Puppet
- Development and design of check plugins with Bash for enhanced monitoring
- Expanded and configured the Icinga2 environment with Icingaweb2 Director
- Created performance dashboards with Grafana and InfluxDB
- Technical and conceptual point of contact
Consultant Icinga2
Agricultural machinery manufacturer (Damme)
- Built and developed a central Icinga2 monitoring infrastructure with test and production systems
- Cross-functional inventory and analysis for application-specific monitoring
- Integrated Graphite for performance data processing and Grafana for dashboards
- Advanced monitoring integration and plugin integration
- Expanded and configured the Icinga2 environment with Icingaweb2 Director
- Development of monitoring plugins with Bash scripting (e.g., for Sophos firewalls)
- Packaged NSClient++ for Windows server monitoring and developed an NRPEv3 installer for Debian/Ubuntu
- Integrated an internal CA based on OpenSSL
- Conducted monitoring workshops and prepared analyses and recommendations
- Technical and conceptual point of contact
Industries Experience
See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.
Experienced in Information Technology (2.5 years), Manufacturing (2 years), Agriculture (1.5 years), Telecommunication (1 year), Chemical (0.5 years), and Retail (0.5 years).
Business Areas Experience
The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.
Experienced in Information Technology (5.5 years), Operations (1.5 years), Project Management (0.5 years), and Business Intelligence (0.5 years).
Summary
I have extensive experience in building and managing advanced monitoring infrastructures, working with tools like CheckMK, Icinga2, Grafana, InfluxDB and Graphite. I set up centralized systems with distributed satellites and developed custom plugins with Bash scripting. My work spans various industries such as IT services, telecommunications, chemicals, security, steel manufacturing and energy, always acting as the technical and conceptual lead.
I focus on performance analysis, integration of monitoring tools and process optimization while ensuring seamless system operations. My technical skills, knowledge transfer and hands-on project management have consistently contributed to reliable and efficient infrastructures.
Skills
Administration And Maintenance Of Windows And Linux Networks And Server Systems
Monitoring With Nagios/icinga 1.x/icinga 2.x/naemon/centreon/checkmk And Addon Extension
Active Directory Administration And Integration
Planning, Concept Design And Deployment
Training Administrators And Users
Security Concepts
Security Implementation And Administration/maintenance
Backup Strategies
Firewall, Ids, Gateway And Proxy Integration
Centralized And Decentralized Communication Solutions
Dmz And Network Planning, Administration And Management
Compaq / Hp
Dell
Ibm
Cisco
Others, X86, X64
Microsoft Windows Nt 4.0/20xx Server
Microsoft Windows Client Os
Linux (Suse/debian/red Hat/centos)
Batch And Bash Scripting
Html
Perl
Access
Mysql
Ms Sql
Tcp/ip
Internet/intranet
Isdn Dsl/wlan
Cisco
Routing
Vpn/ipsec
System And Network Monitoring With Nagios / Icinga / Icinga2 / Grafana / Neteye4 / Centreon (Active, Passive, Snmp, Fault-tolerant Cluster Systems, Addon Integration, Customizing)
Microsoft Windows (Nt/20xx/various Client Systems)
Active Directory Administration
Windows 2003 Cluster (Active/passive)
Security Hardening And Gpo Management
Encrypting Network Communication Via Ipsec + Kerberos (Domain Isolation)
Dmz And Network Setup, Planning And Management (Concepts, Implementation, Administration And Operation)
Integrity Checks (Tripwire) On Windows/linux Systems
Backup With Bakbone Netvault 7.4.x
Ids/ips From Packetalarm
Switch Management Hp Procurve
Server Administration Hp Proliant Dl 360/380 Series
Web Server Apache2 (Https, Webdav)
Proxy Systems (Web And Ftp Proxy)
Firewall Systems (Commercial Or Iptables-based)
Cisco Pix 506e Administration
Linux (Various Distributions)
Groupware Servers (Egroupware, Opengroupware)
Anti-spam (Spamassassin)
Mail Servers (Postfix)
File Servers (Samba)
Central Communication Solutions
Backup (Open Source Solutions)
Vpn (Frees/wan, Strongs/wan, Openvpn)
Pcsi (Packetalarm Certified Security Engineer)
Nca (Netvault Certified Administrator)
Analytical Thinking Skills
Strategic And Structured Approach
Project Management
Planning And Concept Development
Instructor For Monitoring, Linux, Network Technology And It Security
Resilience / Flexibility
Industry / Services / E-commerce / Energy Companies
Security Technology (Fire And Intrusion)
Software Development
Languages
Education
IT systems electronics technician
Certifications & licenses
NCA (NetVault Certified Administrator)
PCSI (PacketAlarm Certified Security Engineer)
Profile
Frequently asked questions
Do you have questions? Here you can find further information.
Where is Matthias based?
What languages does Matthias speak?
How many years of experience does Matthias have?
What roles would Matthias be best suited for?
What is Matthias's latest experience?
What companies has Matthias worked for in recent years?
Which industries is Matthias most experienced in?
Which business areas is Matthias most experienced in?
Which industries has Matthias worked in recently?
Which business areas has Matthias worked in recently?
What is Matthias's education?
Does Matthias have any certificates?
What is the availability of Matthias?
What is the rate of Matthias?
How to hire Matthias?
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
Similar Freelancers
Discover other experts with similar qualifications and experience
Experts recently working on similar projects
Freelancers with hands-on experience in comparable project as a Subproject Manager / Head of Monitoring
Nearby freelancers
Professionals working in or nearby Achern, Germany
