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Mike HartlMH

Mike Hartl

Senior Backend Engineer & Software Consultant

€850/day
Münster, DE
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Mike

I support companies in sustainably developing, modernizing, and making backend systems and established software landscapes technically future-proof. My focus is on PHP, Symfony, software architecture, API development, as well as improving code quality and development processes.

For over 17 years, I have been working as a software developer and have been involved in various projects, both as a permanent employee and as a freelancer, ranging from the further development of existing applications to the conception and implementation of new systems.

A large part of my work involves understanding complex and established systems, gradually reducing technical debt, and developing solutions that remain maintainable and scalable in the long term. Topics such as clean code, automated testing, refactoring, API design, and software architecture have accompanied me for many years.

It is important to me to develop pragmatic solutions that are not only technically sound but also meet the actual requirements of the company. Not every challenge requires the most complex architecture; often, it's about finding the most sensible balance between effort, maintainability, and business value.

Through my experience in various industries and project environments, I can quickly familiarize myself with existing systems, processes, and teams. In addition to development itself, I regularly support architectural decisions, code reviews, technical concepts, and the improvement of development and quality processes.

Currently, I am intensively engaged with the use of AI tools in software development. My focus is on the sensible integration of modern development tools into existing engineering processes to sustainably improve productivity and quality.
  • German

    Native or bilingual

Can work on-site
Münster (up to 50km)

Experience

  • Mike Hartl
    Senior Backend Engineer & Technical Consultant
    January 2008 - Today (18 years and 6 months)
    • Conception and development of individual backend solutions
    • Software architecture and API design
    • Modernization of legacy applications
    • Containerization with Docker and CI/CD processes
    • Technical consulting, code reviews, and refactoring
    • Focus on maintainable and scalable systems
    Docker API Symfony PHP Clean Code
  • Brickfox
    Senior Software Developer
    E-COMMERCE
    September 2022 - Today (3 years and 10 months)
    • Development of an omnichannel commerce platform for multi-channel sales
    • Backend development with PHP and Symfony
    • Conception and implementation of REST APIs
    • Performance optimization and refactoring of existing systems
    • Code reviews, test automation, and quality assurance
    • Collaboration in agile development teams
    Symfony PHP PHPUnit Clean Code microservices-architecture
  • Aschendorff Medien GmbH & Co. KG
    Senior Software Developer
    July 2018 - August 2022 (4 years and 1 month)
    • Development and maintenance of backend applications
    • Implementation of new features and interfaces
    • Optimization of existing systems
    • Technical conception and coordination with business departments
    • Ensuring code quality and maintainability

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