Frederik C.-Freelance Full-Stack Software Developer
Check rate
Experience
Freelance Full-Stack Software Developer
Bundesdruckerei GmbH
Development of the digital organ donation register, commissioned by the Federal Institute for Drugs and Medical Devices (BfArM)
Implementation of user stories in several microservices (frontend and backend)
Ensuring quality with unit, integration, and E2E tests
Conducting code reviews
Coordination with other development teams
Taking over the software license check and simplifying the process
Responsibility for implementing and documenting the business logging
Setting up a development environment with Docker Compose
Freelance Full-Stack Software Developer
Bundesdruckerei GmbH
Development of the digital organ donation register, commissioned by the Federal Institute for Drugs and Medical Devices (BfArM)
Implementation of user stories in several microservices (frontend and backend)
Ensuring quality with unit, integration, and E2E tests
Conducting code reviews
Coordination with other development teams
Taking over the software license check and simplifying the process
Responsibility for implementing and documenting the business logging
Setting up a development environment with Docker Compose
Freelance Full-Stack Software Developer
Zeppelin Baumaschinen GmbH
Development of several tools for processing telemetry data for internal use
Implementation of user stories in internal data processing tools
Ensuring quality with unit and integration tests
Deployment to dedicated Linux servers
Improving the UX of a tool for activating machine trackers
Working out the migration from .deb packages to Docker
Analysis of Camunda versus a custom implementation
Freelance Full-Stack Software Developer
AKDB (Municipal Data Processing Authority)
Development of a user account, an identity solution for citizens used by specialist procedures (e.g. BAföG). Customers include the federal government (bund.id) and Bavaria.
Implementation of user stories in several microservices (frontend and backend)
Ensuring quality with unit, integration, and E2E tests
Migration from Ansible to Kubernetes
Improving the release process across teams, reducing release time from several hours to less than half an hour
Versioning CMS texts to reduce errors and avoid redeployments
Basic refactoring of the IDM infrastructure and decoupling from Shibboleth increased testability and sped up further feature development
Freelance Full-Stack Software Developer
ABI (Audi Business Innovation) via Pentasys
Development of Audi On Demand, a booking system for cars that supports not only public hubs but also private hubs (apartment complexes)
Design of the REST API and documentation with Swagger
Ensuring quality with unit, integration, and E2E tests
Integration with OAuth2 infrastructure and management of DB migration scripts via Liquibase
Implementation of a frontend with Angular 5 in the project's frontend framework
Improving communication with other development teams
Analysis of 3rd-level support tickets and recommendations for automating recurring tasks
Freelance Fullstack Software Developer
lextip GmbH
- Development of a web application for managing contests on Facebook. Participants are contacted via chatbot
- Development of the B2C frontend with React, Redux, and Webpack
- Development of the backend with Clojure and PostgreSQL
- Integration of the Facebook API
- Development of functional (E2E) tests with Selenium WebDriver & Docker
- Integration of the different tools through Maven
Freelance Fullstack Software Developer
Vaillant via Device Insight
Development of a REST API for managing wireless thermostats
Introduction of existing Spring MVC features such as HandlerMethodArgumentResolver, validation annotations, and ExceptionHandler
Documentation of existing and new features in Confluence
Replacing existing serialization code with Jackson annotations
Redesign of the existing architecture for reading and writing data points, which solves performance issues and dramatically reduces bugs by cutting down duplicated code
Freelance Fullstack Software Developer
check24 GmbH
- Development of an application flow for a home financing application
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Government and Administration, Banking and Finance, Real Estate, Healthcare, and Automotive.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, and Quality Assurance.
Summary
I have been working as a full-stack developer in the Java environment for 10 years and still really enjoy getting to know complex systems and new project situations. What sets me apart from other developers is my strong commitment to the project, for example by improving development processes or taking responsibility for topics, the team, or the software. In addition, I work on my own and open source projects in my free time.
Skills
Backend
- Java Se
- Microservices
- Python 3
- Django
- Flask
- Rest
- Postgressql
- Sqlite3
- Sqlalchemy
- Spring (Boot) Pythonunit
- Angular 19
- Javascript
- Typescript
- Github Actions
- Docker
- Scrum
- Jpa (Hibernate)
- Playwright
- Alembic
- Google Oauth
- Google Cloud (Gcp)
- Jira
- Confluence
- Gatling
- Devsecops
- Google Cloud Logging
- Prometheus
- Google Cloud Metrics
- Ai
- Copilot
Frontend
- Gemini
- Roo
- Cline
- Angular
- Vue
- React
- Html5
- Css3
Test & Misc
- Playwright
- Cypress
- Junit
Languages
Education
University of Mannheim
Bachelor's in Business Informatics · Business Informatics · Mannheim, Germany
Certifications & licenses
Oracle Certified Java Ee 6 Persistence Api
Statistics
Experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Frederik is based in Munich, Germany.
Frederik speaks the following languages: German (Native), English (Advanced).
Frederik has at least 8 years of experience. During this time, Frederik has worked in at least 2 different roles and for 7 different companies. The average length of individual experience is 1 year. Note that Frederik may not have shared all experience and actually has more experience.
Based on recent experience, Frederik would be well-suited for roles such as: Freelance Full-Stack Software Developer, Freelance Fullstack Software Developer.
Frederik's most recent position is Freelance Full-Stack Software Developer at Bundesdruckerei GmbH.
In recent years, Frederik has worked for Bundesdruckerei GmbH, Zeppelin Baumaschinen GmbH, and AKDB (Municipal Data Processing Authority).
Frederik is most experienced in industries like Information Technology, Government and Administration, and Banking and Finance. Frederik also has some experience in Real Estate, Healthcare, and Automotive.
Frederik is most experienced in business areas like Information Technology, Product Development, and Quality Assurance.
Frederik has recently worked in industries like Government and Administration, Information Technology, and Healthcare.
Frederik has recently worked in business areas like Information Technology, Quality Assurance, and Product Development.
Frederik holds a Bachelor in Business Informatics from University of Mannheim.
Frederik has 3 certificates. These include: Oracle Certified Professional Java 17, Oracle Certified Java Ee 6 Persistence Api, and Certified Kubernetes Application Developer.
The availability of Frederik needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 15 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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