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Matthias LehmannML

Matthias Lehmann

Fullstack Developer

€600/day
Gotha, DE
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Matthias

I am a Full-Stack Developer with a focus on backend. My knowledge and experience span a wide range:


- Backend:
Development of server applications such as REST APIs (with Node.js or Python, and PHP if necessary)


- Frontend:
Implementation of suitable client applications and web apps (preferably with Vue.js)


- Databases
Use of various SQL and NoSQL databases (e.g., PostgreSQL, SQLite, Redis, and MongoDB)


- Tests, CI, Deployment:
Implementation of automated tests (unit tests, integration tests, e2e tests with various test tools and frameworks like Jest, pytest, Cypress, etc.)
Continuous Integration (using GitLab or GitHub)
Performing deployments (Linux servers, Docker, Docker-Compose, and Kubernetes, Helm)


- System-level components
Use of Rust when security and performance are paramount


- Desktop and mobile applications
Development of desktop applications (e.g., with Electron) or mobile apps (with Capacitor).

Whether I work alone or in a team, in a start-up or a medium-sized company: My goal is to develop software solutions that empower and inspire people.
  • German

    Native or bilingual

  • English

    Conversational

Remote only
Primarily works remotely

Experience

  • The Shout / Der Weckruf
    Software Developer and Consultant
    PRESS AND MEDIA
    August 2020 - December 2023 (3 years and 5 months)
    Landkreis Göppingen, Germany
    Completely redeveloped an existing web application, based on a proprietary CMS, as a modern Single-Page Application. Gradually extended with further functions. Additionally developed desktop applications for Windows, Mac, and Linux, as well as mobile apps for Android and iOS on a common codebase.

    Consulted on technical questions regarding the application, on planning feature requests, as well as performing deployments and server maintenance.

    The application is a sermon software for a Christian community, with which sermons can be read, listened to, searched, and translated. The application works responsively for both mobile devices and large screens, and includes a user management with login and rights system, in addition to an audio player and PDF generation. The desktop applications and mobile apps also work offline and synchronize data with the server.
    NodeJS FeathersJS Quasar VueJS Electron Capacitor SQLite PostgreSQL Docker Docker-Compose
  • Cm4all GmbH
    Developer
    SOFTWARE PUBLISHING
    July 2017 - Today (9 years and 1 month)
    Erfurt, Germany
    Creation of a communication and process tool (consisting of REST API and SPA frontend) for customer-agency interaction.
    Node.js Vue.js JavaScript Kubernetes Docker Express Ansible Gitlab CI
  • Q-Sensei GmbH
    Senior Software Developer
    SOFTWARE PUBLISHING
    February 2016 - June 2017 (1 year and 5 months)
    Erfurt, Germany
    Creation of REST API backend and system components for search platform
    Python Docker noSQL

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Education

  • Dipl. Inf.
    University of Leipzig
    2005

Skill set

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