Thomas Hörnke - Senior Developer for PHP and MySQL Web Apps

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Berlin, Germany

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Experience

Jul 2003 - Present

23 years 2 months

Berlin, Germany

Remote

Senior Developer

h3 :: hörnke & partner, Application Developer

General focus: database web applications with PHP and MySQL, JavaScript and CSS.

In-house development of a platform for collecting and statistically analyzing inventory data for social welfare organizations; in use for women’s shelters and men’s shelters. Ongoing maintenance and development for 16 years, including data analysis and cleaning.

Setup, development and ongoing maintenance of CMS-based websites for internet and intranet. Preferred content management systems are typo3, WordPress, Contao, ProcessWire.

For 6 years, intensive support (relaunch, further development, support) of several multilingual websites of a large German consulting firm with international locations, based on the typo3 CMS. Collaboration with the supporting agency.

For 8 years, development and maintenance of various housing cooperative websites, especially showcasing available apartments with inquiry and application functions, as well as a closed member area - based on the WordPress CMS. Collaboration with the supporting agency.

Development and support of the high-traffic purchasing platform of the largest German re-commerce provider, with various interfaces to AWS, internal logistics, sales, product database and marketing. Extensive experience with caching, redundancy, pricing and DevOps.

Communication and technical consulting at the Federal Ministry of the Interior, as a consultant for a large international consulting firm.

Industry experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Professional Services, Government and Administration, Real Estate, and Retail.

Information Technology

Professional Services

Government and Administration

Real Estate

Retail

Business area experience

See which departments and functions this freelancer has contributed to most.

Experienced in Business Intelligence and Information Technology.

Business Intelligence

Information Technology

Summary

Senior developer with 25 years of professional experience; focus on database applications for internet and intranet using PHP and MySQL. Extensive experience in the areas of: technical planning, CMS installation and configuration including third-party plugins and extensions, custom module development, REST APIs and other interfaces (in/out), template creation, design implementation and GUI functionality with modern CSS & JavaScript, updates and migrations.

Languages

German

Native

English

Advanced

French

Elementary

Education

Jul 1998 - Jun 1999

Siemens Business Services

Certificate · Application Developer · 1

One-year training/retraining with certificate.

Sep 1986 - Sep 1992

Freie Universität Berlin

Diploma · Biology · 1

Specialized in field ecology, entomology and soil zoology.

Statistics

Experience

Total positions 1

Experience in Information Technology 23 y

Avg length 23 y 1 m

Longest experience 23 y 1 m

Global experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Senior Developer

Main industries Information Technology, Professional Services, Government and Administration

Main business areas Business Intelligence, Information Technology

Qualifications

Highest degree Master

Profile

Member since

January 2026

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Frequently asked questions

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Thomas is based in Berlin, Germany and can operate in on-site, hybrid, and remote work models.

Thomas speaks the following languages: German (Native), English (Advanced), French (Elementary).

Thomas has at least 23 years of experience. During this time, Thomas has worked in at least 1 role and for 1 company. The average length of individual experience is 23 years and 1 month. Note that Thomas may not have shared all experience and actually has more experience.

Based on recent experience, Thomas would be well-suited for roles such as: Senior Developer.

Thomas's most recent position is Senior Developer at h3 :: hörnke & partner, Application Developer.

In recent years, Thomas has worked for h3 :: hörnke & partner, Application Developer.

Thomas is most experienced in industries like Information Technology, Professional Services, and Government and Administration. Thomas also has some experience in Real Estate and Retail.

Thomas is most experienced in business areas like Business Intelligence and Information Technology.

Thomas has recently worked in industries like Information Technology, Professional Services, and Government and Administration.

Thomas has recently worked in business areas like Business Intelligence and Information Technology.

Thomas holds a Master in Biology from Freie Universität Berlin.

The availability of Thomas needs to be confirmed.

Daily rate distribution

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<€800 €800-1200 €1200-1600 €1600+

The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.

Average rates for similar positions

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Daily rate avg. 870 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

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Median rate 800 €

The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.

Calculated based on our freelancers’ daily rates as of 30 Aug 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.