Freelancer profile translated to English.
Back to original languageAbout Dennis
Backend Developer for Laravel-based web solutions & APIs
I develop performant and stable backends with a focus on Laravel, PHP, and clean architecture. Typical tasks include API development, database modeling, performance optimization, and extending existing systems. I work in a structured, independent, and solution-oriented manner – with an eye on scalability, maintainability, and clear technical decisions.
- Development of complex Laravel backends
- API Design & Integration (REST, JSON)
- Database Modeling (MySQL, PostgreSQL)
- Refactoring & Stabilization of grown projects
- Performance Optimization & Caching
- Extending existing systems (WordPress, Laravel, .NET)
- Event Management Backend (Laravel) with API, role logic, queues
- Document workflow with automatic processing and versioning
- CRM integration via REST API
- Performance optimization of existing systems
Over 20 years of PHP experience, several years of Laravel in production projects. I have been developing since childhood and have a deep understanding of architecture, data structures, and system behavior. With a legal background (LL.B. Business Law), I bring a structured, audit-proof, and low-risk working method to technical projects.
Backend Developer focused on Laravel, PHP and clean architecture. I build stable backend systems, APIs, database structures and optimize performance. Typical work includes Laravel backend development, API design, database modeling, refactoring legacy projects, performance optimization and extending existing systems.
German
Native or bilingual
English
Conversational
Swedish
Basic
Remote only
Primarily works remotely
Experience
- Joerrens Online MarketingPHP programming of an API connection to a shop systemMarch 2024 - April 2024 (1 month)The main task was to connect two external APIs to a shop system and ensure data exchange in both directions, both initially and as updates. The backend API calls were implemented using PHP, with classic HTML and CSS used for the frontend.
- eproi, Inh. D. Giese / D. WendtFounderJune 2016 - Today (10 years and 2 months)Berlin, GermanyCurrently operating my own company with a focus on development, particularly for WordPress but also for other systems like Rise, Espo, and gambio. Development is done not only with the "usual" web stack (PHP, MariaDB, Javascript, CSS, and HTML(5)) but also based on C#/.NET (Core) and Blazor.
- Rene BraunCreation of a plugin for Espo CRMSeptember 2022 - May 2023 (9 months)Letschin, BB, DeutschlandCreation of a separate import plugin specifically for Espo CRM based on PHP (for Espo, Javascript/jQuery is also required) for manual import of predefined files.
Reviews
Rene
Rene Braun
Reviewed on 1/18/2025
As always, everything is great. I say thank you!
Rene
Rene Braun
Reviewed on 6/30/2023
Thank you. Super communication, great price, and excellent implementation.
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Education
- IT System AdministratorStrato Medien AG2005klassischer IT-Systemkaufmann mit IHK Abschluss
- Bachelor of Business Law (LL.B.)HTW Berlin2011Studium des Wirtschaftsrechts und innerhalb der Möglichkeiten Spezialisierung auf Sozial- und Arbeitsrecht.
Certifications
- Foundational C# with Microsoft Certificationfreecodecamp2020
- Develop Web Applications with Blazor, .NET and C#Rheinwerk Verlag