Denny R.
Lead Developer Backend
Experience
May 2014 - Present
11 years 5 monthsAugsburg, Germany
Lead Developer Backend
CHECK24 Vergleichsportal Mietwagen GmbH
- MySQL query optimization
- MySQL performance analysis
- MySQL High Availability Cluster
- PHP OOP (Symfony, Laminas, Zend)
- Perl, Golang, Python, Cobol, JavaScript, Node.js
- German (Native or Bilingual)
- English (Professional Working)
- DBA, MySQL InnoDB Cluster, MySQL Monitoring
- Query Optimization
- Performance Optimization Expert
Jan 2012 - Apr 2014
2 years 4 monthsTechnical Lead / Team Lead / Senior Software Developer
Jarlssen GmbH
- Development team lead
- Software Development
- PHP, Symfony, Zend Framework, JavaScript
- TÜV-certified software quality
- Rapid Prototyping
- PHP Performance Tuning
- WebToPrint
- LDAP
- System administration
- Payment Integration
- CRUD
Dec 2009 - Dec 2011
2 years 1 monthMunich, Germany
Senior Software Developer
Utopia AG
Dec 2008 - Aug 2009
9 monthsSenior Software Developer
AUVICA GmbH
Aug 2007 - Nov 2008
1 year 4 monthsSenior Software Developer / Tech Lead
LifeJack AG
Sep 2005 - Present
20 years 1 monthSoftware Developer
Freelancer
- Software development, server administration
- PHP, JavaScript, PDFLib,
- MySQL, MySQL replication, performance
- Team organization and team lead, technical lead
May 2005 - Jul 2007
2 years 3 monthsSoftware Developer
Sixt AG
Dec 2000 - Apr 2005
4 years 5 monthsSystem Developer
e/t/s didactic media GmbH
May 2000 - Nov 2000
7 monthsDiplomant in IT department
BMW Bank GmbH
Apr 1998 - Apr 2000
2 years 1 monthSoftware Developer
Baan Deutschland GmbH
Summary
- Lead Developer Backend
- DBA, MySQL InnoDB Cluster, MySQL Monitoring
- Query Optimization
- Performance Optimization Expert
Languages
German
NativeEnglish
AdvancedEducation
Oct 1995 - Jun 2000
Martin-Luther-Universität Halle-Wittenberg
Diploma in Business Informatics · Computer Software Engineering and Databases · Halle (Saale), Germany
Certifications & licenses
TÜV-certified software quality
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