Denis Foos - Full-Stack Developer

Building reliable full-stack web applications 

Senior Full-Stack Developer designing and maintaining reliable web applications across backend and frontend, with a strong emphasis on clean architecture, APIs, and long-term maintainability.

About 

BIOGRAPHY

Senior Full-Stack Developer with a strong background in building and maintaining reliable web applications. Experienced across backend and frontend development, with a focus on clean architecture, APIs, and long-term maintainability.

Work includes the design and implementation of backend systems, integration of frontend applications, and reliable deployment processes. Emphasis is placed on clarity, stability, and sustainable technical solutions.

Comfortable working with clients and teams in agile environments, supporting projects from initial concept through long-term operation.

Denis Foos - Senior Full-Stack Developer
+

satisfied clients

+

projects completed

+

Years of experience

Skills

Web
PHP
Laravel
REST-APIs
MySQL
JavaScript
Vue.js
React
Docker
CI/CD
Git
Linux
Scrum

Experience

  • Senior Full-Stack Developer @Self-employed

    Apr 2020 – Present | Germany · Remote

    Development and maintenance of full-stack web applications with a strong focus on reliable backend systems, APIs, and relational databases. Responsible for stable and maintainable solutions, including containerized deployments with Docker and CI/CD pipelines, as well as frontend integration using modern JavaScript technologies. Close collaboration with clients and agile teams to deliver reliable, long-term solutions.

  • Web Developer @TRKKN

    Sep 2019 – Mar 2020 | Germany · Hybrid

    Planning and implementation of websites, landing pages, and multilingual customer solutions. Development of custom JavaScript solutions for testing tools, Node.js-based services, and integration of REST APIs. Technical consulting for internal and external clients, including deployments and integrations in cloud-based environments.

  • Web Developer @System4all

    Jan 2019 – Aug 2019 | Germany · On-site

    Development of responsive web and eCommerce solutions using PHP and MySQL, supported by modern frontend technologies. Involvement across all project phases from initial design and implementation to maintenance, with a focus on code quality, performance, and user experience.

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