Stephan Springer
@stephanspringer
Senior PHP developer focused on secure, high-performance web applications using Symfony.
What I'm looking for
I’m a highly experienced web developer and Senior PHP Developer with extensive knowledge in Java, Perl, and PHP, and deep expertise in preparing and realizing complex web projects. In my role at neubau kompass AG, I developed and maintained SQL queries, REST APIs, and PHP/Symfony-based applications while improving UI performance and interactivity.
I’m especially proud of driving security and quality: I implemented protection against SQL injection and XSS, reinforced robust authentication (including session management), and integrated Google Analytics and Google Tag Manager for user tracking. I also strengthened engineering practices by setting up CI/CD, expanding unit/feature test coverage from 0 to 20 percent, and leading code reviews.
I’ve also taken on leadership as Acting team leader—supporting architecture reviews, technical roadmaps, mentoring junior developers, and coordinating delivery with planning, milestones, and stakeholder management. Earlier, I built e-commerce features and CMS modules at meventi Deutschland GmbH, and I’ve worked as a freelance software developer and in project and architecture roles, always with a self-motivated, dedicated, communication-first approach.
Experience
Work history, roles, and key accomplishments
Senior PHP Developer
Neubau Kompass AG
Jul 2018 - Mar 2025 (6 years 8 months)
Developed and maintained SQL-backed REST APIs and PHP/Symfony web applications, raising test coverage from 0% to 20% through CI/CD, unit/feature tests, and code reviews. Built more interactive Symfony UIs with Atomic Design + Live Components, implemented protections against SQL injection and XSS, and integrated Google Analytics/GTM tracking.
Freelance Software Developer
Star Whisperer
Aug 2009 - Dec 2024 (15 years 4 months)
Delivered freelance web development for complex projects, leveraging PHP and Symfony alongside JavaScript/TypeScript, MySQL, and Perl. Applies design patterns and unit testing practices to produce maintainable, production-ready applications.
Education
Degrees, certifications, and relevant coursework
University of Applied Sciences Landshut
Diploma in Computer Science (FH), Computer Science
2000 - 2005
Grade: good
Diploma in Computer Science (FH) at the University of Applied Sciences Landshut, completed from 2000 to 2005. GPA/grade point average: good.
BMW Dingolfing
Electronics Installer Trainee, Electronics
1998 - 2000
German apprenticeship program as a Trainee Electronics Installer at BMW Dingolfing from 1998 to 2000.
Specialized secondary school Landshut
1996 - 1998
Specialized secondary school education in Landshut from 1996 to 1998.
Tech stack
Software and tools used professionally
Availability
Location
Authorized to work in
Job categories
Skills
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