I am Markus Wernig, an IT professional with over 20 years of experience in enterprise IT projects. I have got a very broad background and experience in IT, which ranges from software engineering to network security and system engineering/administration. For over 15 years now I have worked primarily in software engineering, from full-stack to appliance, from network automation over PKI and cryptography to database-heavy workflow applications. Before that, I was mainly active in network security. I have worked alone and in agile team settings. As lead engineer I am comfortable comunicating on executive levels as well as with technical staff and end-users. I am not, however, a typical 100%-only-developer. Based on my extensive experience in various fields I would describe myself rather as an allrounder with a strong suit in software engineering and security . Here are some of the technologies I have a work record with: Java/J2EE, SQL, Angular, Kotlin, HTTP, SOAP, X509, S/MIME, REST, Perl, PHP, JSON, Spring Boot, Firewall, Checkpoint, Forcepoint, VPN, Proxy. Interested? Please do not hesitate to get in touch.

Markus Wernig

I am Markus Wernig, an IT professional with over 20 years of experience in enterprise IT projects. I have got a very broad background and experience in IT, which ranges from software engineering to network security and system engineering/administration. For over 15 years now I have worked primarily in software engineering, from full-stack to appliance, from network automation over PKI and cryptography to database-heavy workflow applications. Before that, I was mainly active in network security. I have worked alone and in agile team settings. As lead engineer I am comfortable comunicating on executive levels as well as with technical staff and end-users. I am not, however, a typical 100%-only-developer. Based on my extensive experience in various fields I would describe myself rather as an allrounder with a strong suit in software engineering and security . Here are some of the technologies I have a work record with: Java/J2EE, SQL, Angular, Kotlin, HTTP, SOAP, X509, S/MIME, REST, Perl, PHP, JSON, Spring Boot, Firewall, Checkpoint, Forcepoint, VPN, Proxy. Interested? Please do not hesitate to get in touch.

Available to hire

I am Markus Wernig, an IT professional with over 20 years of experience in enterprise IT projects. I have got a very broad background and experience in IT, which ranges from software engineering to network security and system engineering/administration.

For over 15 years now I have worked primarily in software engineering, from full-stack to appliance, from network automation over PKI and cryptography to database-heavy workflow applications. Before that, I was mainly active in network security.
I have worked alone and in agile team settings. As lead engineer I am comfortable comunicating on executive levels as well as with technical staff and end-users.

I am not, however, a typical 100%-only-developer. Based on my extensive experience in various fields I would describe myself rather as an allrounder with a strong suit in software engineering and security .
Here are some of the technologies I have a work record with:
Java/J2EE, SQL, Angular, Kotlin, HTTP, SOAP, X509, S/MIME, REST, Perl, PHP, JSON, Spring Boot, Firewall, Checkpoint, Forcepoint, VPN, Proxy.

Interested? Please do not hesitate to get in touch.

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Skills

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Beginner
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Language

German
Fluent
English
Fluent
Italian
Fluent
French
Advanced

Work Experience

Freelance IT Consultant / Owner at x:fer GmbH
January 1, 1999 - Present
Freelancer providing security, Unix, PKI and networking services; apps hosting, mail hosting, web hosting, DNS; high-availability Linux/OpenBSD infrastructure; CI/CD pipelines; open-source tooling.
System Engineer / System Environment Architect at x:fer GmbH
January 1, 2020 - December 31, 2020
Design and build multi-zone, highly available system environments for secure application operation; maintain and extend all system components; Debian GNU/Linux, OpenBSD; DRBD, kvm/qemu, libvirt, CARP, relayd.
Software Engineer – Migration of Registry Software at x:fer GmbH (Client: Registry Software Project)
November 1, 2022 - April 30, 2025
Migration from mod_perl-based applications to Java-based stack; Java, Bootstrap, Ajax, Tomcat, MariaDB, REST, Apache; SuisseID integration.
Software Engineer Network Automation at x:fer GmbH
June 1, 2018 - December 31, 2022
Replacement/development of network provisioning platform; API integration with routers, switches, firewalls, load balancers, reverse proxies; Java/Kotlin/Spring Boot, Spring Batch, JavaScript, CSS, Tomcat, Angular, Oracle, node.js, REST, Docker, Jenkins, Gitlab.
Developer / Engineer – Registry Software at x:fer GmbH
July 1, 2014 - June 30, 2020
Developed/extended X.509 signature register for Swiss Notary Association; central Swiss Testament Register and Portal; SuisseID integration.
Network Security Engineer at x:fer GmbH
April 1, 2012 - June 30, 2015
Management of complex firewall infrastructures for outsourcing platforms (~500 firewall clusters / 200 CMA); StoneGate FW, Check Point Provider-1.
Developer / Engineer E-Mail Encryption Gateway at x:fer GmbH
July 1, 2010 - June 30, 2018
Development/extension of E-Mail encryption/signature gateway; secure Webmail interface; SuisseID integration; system engineering of the security platform (OpenBSD).
Enterprise Security Engineer at x:fer GmbH
January 1, 2010 - July 1, 2010
Design of a corporate, highly available firewall platform spanning multiple locations; redesign of corporate remote access services.
eHealth PKI Developer / Engineer at x:fer GmbH
September 1, 2009 - December 31, 2011
Development of PKI software for card-verifiable certificates; online enrollment interface; PKI platform engineering; middleware integration coordination.
Engineer Managed Security Services at x:fer GmbH
January 1, 2009 - June 30, 2009
Operations and engineering of managed security platforms (international); Check Point, Phion Netfence, Solaris, RADIUS, LDAP, Cisco ASA, WebWasher.
Unix Security Systems / PKI Engineer at x:fer GmbH
June 1, 2006 - December 31, 2008
PKI infrastructure engineering; ZertES compliance; Linux server hardening; enterprise remote access; project management and PKI software development; firewall operations.
Security Engineering / Security Architecture at x:fer GmbH
January 1, 2006 - December 1, 2006
Enterprise VPN planning; PKI certificate specifications; security management workflow; log management policy; DNS data consolidation.
Online Documentation System at x:fer GmbH
January 1, 2005 - December 31, 2005
Development of an online documentation system using Perl/Bash on Linux/Apache/MySQL.
Alarming Agent with HP OVO Interface at x:fer GmbH
January 1, 2004 - December 31, 2004
Development of an alarming agent with HP OVO interface on Solaris/Linux.
Log/Connection Tracking Database at x:fer GmbH
January 1, 2002 - December 31, 2003
Design and maintenance of internal log and connection tracking database; logging policies; web-based GUI.
Load Balancing Agent for UNIX Servers at x:fer GmbH
January 1, 2002 - December 31, 2002
Development of a load balancing agent for UNIX servers for FW-1 (C); systems Solaris, Linux, HP-UX.
Intrusion Detection Infrastructure at x:fer GmbH
January 1, 2001 - December 31, 2001
Design, deployment and maintenance of an IDS infrastructure; sensors and central database; incident response procedures.

Education

Abitur (High School Diploma) at Austria
January 1, 1985 - January 1, 1985
Informatiktechniker TS at ZbW St.Gallen, Switzerland
January 1, 1998 - December 31, 1999
Solaris System Administration II at SUN Microsystems
January 1, 2001 - January 1, 2001
Linux Administration at Brainbench
January 1, 2002 - January 1, 2002
Network Technical Support at Brainbench
January 1, 2002 - January 1, 2002

Qualifications

CISSP (ISC)2
January 11, 2030 - January 15, 2026
CCSA (Check Point)
January 11, 2030 - January 15, 2026
CCSE (Check Point)
January 11, 2030 - January 15, 2026
Veritas NetBackup
January 1, 2000 - January 15, 2026

Industry Experience

Software & Internet, Professional Services, Telecommunications, Government, Other, Computers & Electronics