Alexander Schwartz - Full-Stack Developer, Java & Kotlin

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Munich, Germany

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Experience

Nov 2025 - Nov 2025

1 month

Munich, Germany

Founder and Full-Stack Developer

TrumpPostAlert.com

Feasibility study for the rapid implementation of requirements using AI-based development (Vibe-Coding)
Development of a single-page web app in Angular 20
Development of a backend server application in Kotlin
Integration of the Google Cloud Platform (Firebase): Authentication, Firestore NoSQL database, Storage, Cloud Functions, Hosting and Cloud Run
Integration of a NEON PostgreSQL database
Automated, AI-based evaluation of Donald Trump's posts on Truth Social and analysis of their relevance to stock markets and geopolitical topics
CI/CD via GitHub Actions using Docker and Google Cloud Run
Technical environment: Angular 20 (Angular Material, RxJS), Kotlin 2.2.20, TypeScript 5.9.3, Spring Boot 3.5.6, Google Cloud Platform (Firebase, Cloud Run, Gemini, Vertex AI), ChatGPT Codex, Git, GitHub, SourceTree, IntelliJ WebStorm, IntelliJ IDEA

Aug 2024 - Dec 2025

1 year 5 months

Lübeck, Germany

Full-Stack Developer

Hypoport (vergleich.de)

Further development of the vergleich.de website
Development of new backend services and further development of existing backend services in the form of microservices
Development of monitoring tools
Deployment via TeamCity and GitHub Actions
Development of REST interfaces
Database migration from Oracle to PostgreSQL
Technical environment: Java and Kotlin (including Spring, Spring Boot, JPA, Hibernate), Angular (TypeScript), JavaScript, IntelliJ IDEA, WebStorm, Apache Maven, Oracle DB, MongoDB, PostgreSQL, Git (GitLab, GitHub, Bitbucket), TeamCity, Jira, Docker, JUnit, Mockito, Jasmine

Jun 2023 - Dec 2025

2 years 7 months

Kamp-Lintfort, Germany

Full-Stack Developer

Computer Futures / KRZN

Further development and customization of the existing software
New development of an instance manager (Java frontend and Angular backend) and a password store
Complexity estimates
Development of REST interfaces
Authentication using Keycloak
Implementation of an MFA login flow with Shibboleth and PrivacyIDEA
Technical environment: Angular 20 (Angular Material, RxJS), TypeScript, Java 21, Spring Boot 3.4.2, Python, PostgreSQL, Keycloak, PrivacyIDEA, Shibboleth IDP, WebSocket, Apache Kafka, Docker, Kubernetes (Rancher), Git, GitLab, SourceTree, IntelliJ IDEA, IntelliJ WebStorm, Jira, Confluence, Clean Code Architecture, JUnit, Mockito

Mar 2023 - Mar 2023

1 month

Lucerne, Switzerland

Full-Stack Developer / DevOps

Callista/CSS

Further development and customization of the existing software
Deployments in Kubernetes via TeamCity
Technical environment: Angular 15 (Angular Material, RxJS), Java 18, TypeScript, Git, Bitbucket, SourceTree, IntelliJ IDEA Ultimate, Kubernetes, Cypress Testing Framework, Clean Code Architecture, DDD, Apache Kafka

Jan 2023 - May 2023

5 months

Munich, Germany

Founder and Full-Stack Developer

Stockforecast.de

Development of a single-page web app in Angular 12
Development of a backend server application in Kotlin
Integration of the Google Cloud Platform (Firebase): Authentication, Firestore NoSQL database, Storage, Cloud Functions, Hosting and Cloud Run
Integration of the Financial Modelling Prep API as a data source
Automated evaluation of historical stock data to identify statistical patterns (statistical trading)
CI/CD via GitHub Actions using Docker and Google Cloud Run
Technical environment: Angular 12 (Angular Material, RxJS), Kotlin 1.8.0, TypeScript with Bootstrap, Spring Boot 3.0.3, Google Cloud Platform (Firebase, Cloud Run), Git, GitHub, SourceTree, IntelliJ WebStorm, IntelliJ IDEA

Oct 2021 - Jan 2023

1 year 4 months

Lübeck, Germany

Full-Stack Developer

Hypoport (vergleich.de / Dr. Klein)

Further development of the websites vergleich.de and drklein.de
Development of new backend services and further development of existing ones in the form of microservices
Development of monitoring tools
Deployment via TeamCity and GitHub Actions
Development of REST interfaces
Technical environment: Java and Kotlin (including Spring, Spring Boot, JPA, Hibernate), Angular (TypeScript), JavaScript, IntelliJ IDEA, WebStorm, Apache Maven, Oracle DB, MongoDB, Git (GitLab, GitHub, Bitbucket), TeamCity, Jira, Docker, JUnit, Mockito, Jasmine

Jan 2021 - Dec 2021

1 year

Munich, Germany

Founder and Full-Stack Developer

Blitzshare.de

Development of a single-page web app in Angular 12
Development of a backend server application in Kotlin
Integration of the Google Cloud Platform (Firebase): Authentication, Firestore NoSQL database, Storage, Cloud Functions and Hosting
Integration of various APIs (Google Geocoding API, Google Translation API, Algolia Search, Twilio SendGrid)
CI/CD via GitHub Actions
Technical environment: Angular 12 (Angular Material, RxJS), Kotlin 1.4.21, TypeScript with Bootstrap, Spring Boot 2.4.2, Google Cloud Platform (Firebase), Git, GitHub, SourceTree, IntelliJ WebStorm, IntelliJ IDEA

Feb 2019 - Dec 2020

1 year 11 months

Munich, Germany

Backend Developer

OSB / it@m

Co-development of the basic framework for online services of the City of Munich
Further development and new development of online services based on JavaServer Faces (JSF)
Integration with basic components such as ePayment or backend integration (web service)
Creation and adaptation of technical documentation (e.g. UML diagrams)
Review and specification of technical application options for additional products or frameworks
Development of microservices
JUnit testing and Test Driven Development (TDD)
Technical environment: Java (including Spring, JPA, Hibernate), JavaScript, Eclipse IDE for Java EE Developers, Apache Maven, Apache Camel, ActiveMQ, Oracle SQL Developer, Git, Subversion, Jenkins, SonarQube, Mantis, TestLink, LiMux (Ubuntu 18.04 LTS), JUnit

Feb 2016 - Dec 2020

4 years 11 months

Munich, Germany

Android App Developer

Native Android App Development (Solo Project)

Development of a card game app
Development of a fitness tracking app with a Spring Boot server component
Installation and administration of an Ubuntu server and the required software for the server component
Development of a health app
Technical environment: Java, Kotlin, Android Framework, Gradle (App), Maven (Server), Android Studio, Eclipse EE, Ubuntu 16.04.5 LTS, Apache, Tomcat, MySQL, phpMyAdmin, Subversion, PuTTY, WinSCP

Dec 2015 - Feb 2019

3 years 3 months

Munich, Germany

Backend Developer and Development Team Leader

Cataneo GmbH

Development of new program modules and improvement and extension of existing ones (primarily backend, also frontend)
Management of a development team of five people
Code reviews and error analysis
Technical environment: Data imports and exports (XML/XSD, Apache POI), RESTful web services, migration from ANT to Maven, code documentation (UML, Markdown, AsciiDoc), Java 9 (including Spring, Spring Boot, Spring Batch, Spring Security, Querydsl), JavaScript (including jQuery), Oracle SQL, Maven, Eclipse IDE, VS Code, Apache Kafka, Oracle SQL Developer, Git, Subversion, PuTTY, WinSCP, Jenkins, SonarQube, Jira, OTRS, Windows 10 Pro

Jul 2014 - Nov 2015

1 year 5 months

Munich, Germany

System Test Manager

Conplan GmbH / MEAG

Automated installation of test computers with Windows 7 64-bit to prepare for the rollout
Administration of computers and creation of relocation orders
Supporting testers with troubleshooting and defect clarification
Creating test plans and entering test procedures in HP Quality Center
Supporting various project management activities
Technical environment: Windows Vista and 7, Microsoft Office 2007/2013, HP Quality Center, SCCM, DDWI

Jun 2014 - Jul 2014

2 months

Munich, Germany

First and Second Level Support

Far Galaxy Networks

User support
1st and 2nd level server administration
Administration and support of user accounts and mailboxes
On-site customer support
Technical environment: Windows 7/8, Windows Server 2008/2012, Active Directory, LogMeIn

Apr 2014 - Jan 2015

10 months

Munich, Germany

Master's Thesis

Institute for Cognitive Systems (TU München)

Developing a camera system that can be attached to the limbs of a robot and functions as a unidirectional proximity sensor
Developing software to analyze camera images and determine the distance to objects
Technical environment: C++ with OpenCV, Qt, Windows 7, Ubuntu

Aug 2012 - Dec 2012

5 months

Munich, Germany

Template Design and Quality Assurance for Microsoft Office

Conplan GmbH / Munich RE

Designing and adapting templates for Microsoft Word 2007 and PowerPoint 2007
HP Quality Center testing for Word, Outlook, PowerPoint, Excel, Access, Visio 2007
Documenting the file inventory
Writing test plans for internal company tools and carrying out tests
Technical environment: Windows 7, Microsoft Office 2007

Apr 2012 - Feb 2013

11 months

Munich, Germany

Magazine Design and Editing

Verein der Studenten im Olympiazentrum e.V.

Creating a design template (Microsoft Office) for the club magazine Oly-Info
Writing articles and translating the entire magazine into English
Contact with the club's committees and support
Technical environment: Windows 7, Microsoft Office 2007

Dec 2011 - Feb 2012

3 months

Traunreut, Germany

Bachelor's Thesis

Siteco Beleuchtungstechnik (formerly Siemens)

Conducting photometric measurements and mathematically evaluating measurement data
Selecting, ordering, and installing electronic components
Extensive programming of an Atmel microcontroller to develop a circadian luminaire control system
Using a DCF77 receiver to determine the current time
Technical environment: Windows 7, AVR Studio 4, Atmel AT90PWM316

Sep 2011 - Nov 2011

3 months

Traunreut, Germany

Engineering Intern

Siteco Beleuchtungstechnik (formerly Siemens)

Performing firmware updates on luminaire controllers
Programming various development tools in Delphi
Soldering several model circuits for training purposes
Measuring quartz crystals with an oscilloscope at different temperatures, replacing them, and repeating the measurements
Documenting the results and supporting mathematical calculations
Technical environment: Windows 7, Turbo Delphi

Industry experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Banking and Finance, Government and Administration, Education, Media and Entertainment, and Insurance.

Information Technology

Banking and Finance

Government and Administration

Education

Media and Entertainment

Insurance

Business area experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Product Development, Quality Assurance, Project Management, Research and Development, and Marketing.

Information Technology

Product Development

Quality Assurance

Project Management

Research and Development

Marketing

Skills

Implementation Of Spring Boot Applications In Java
Development With Kotlin
Implementation Of Rest Interfaces
Databases: Oracle Db, Mongodb, Postgresql
Front-End Development With Angular
Deployment With Teamcity
Deployment With Docker
Testing With Junit
Testing With Mockito
Teamwork
Communication Skills
Initiative And Proactive Approach
Reliable, Structured And Thoughtful Way Of Working
Transparent Way Of Working And Good Documentation Of Progress
Responsible Freelancer With Technical Know-How, Ambition And Commitment
High Level Of Dedication And Solution-Oriented Approach Under Time Pressure
Meeting Deadlines And Appointments

Languages

German

Native

English

Advanced

Latin

Elementary

Education

Apr 2012 - Feb 2015

TU München

Master of Science · Electrical Engineering and Information Technology · Munich, Germany

Oct 2008 - Mar 2012

TU München

Bachelor of Science · Electrical Engineering and Information Technology · Munich, Germany

Sep 1998 - Jun 2008

Johannes-Heidenhain-Gymnasium Traunreut

Abitur · Traunreut, Germany · 2,3

Statistics

Experience

Total positions 17

Experience in Information Technology 10.5 y

Avg length 1 y 2 m

Longest experience 4 y 10 m

Global experience

Countries worked in 2 (Germany, Switzerland)

Primary country Germany

Expertise

Recent roles Founder and Full-Stack Developer, Full-Stack Developer, Full-Stack Developer / DevOps

Main industries Information Technology, Banking and Finance, Government and Administration

Main business areas Information Technology, Product Development, Quality Assurance

Qualifications

Highest degree Master

Member since

January 2026

Last update

October 2026

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Frequently asked questions

Have questions? Find more information here.

Alexander is based in Munich, Germany.

Alexander speaks the following languages: German (Native), English (Advanced), Latin (Elementary).

Alexander has at least 13 years of experience. During this time, Alexander has worked in at least 13 different roles and for 16 different companies. The average length of individual experience is 1 year and 9 months. Note that Alexander may not have shared all experience and actually has more experience.

Based on recent experience, Alexander would be well-suited for roles such as: Founder and Full-Stack Developer, Full-Stack Developer, Full-Stack Developer / DevOps.

Alexander's most recent position is Founder and Full-Stack Developer at TrumpPostAlert.com.

In recent years, Alexander has worked for TrumpPostAlert.com, Hypoport (vergleich.de), Computer Futures / KRZN, Callista/CSS, and Stockforecast.de.

Alexander is most experienced in industries like Information Technology, Banking and Finance, and Government and Administration. Alexander also has some experience in Media and Entertainment, Education, and Manufacturing.

Alexander is most experienced in business areas like Information Technology, Product Development, and Quality Assurance. Alexander also has some experience in Project Management, Research and Development, and Marketing.

Alexander has recently worked in industries like Information Technology and Banking and Finance.

Alexander has recently worked in business areas like Information Technology, Product Development, and Business Intelligence.

Alexander holds a Master in Electrical Engineering and Information Technology from TU München and a Bachelor in Electrical Engineering and Information Technology from TU München.

Alexander will be available full-time from January 2028.

Daily rate distribution

0% 25% 50% 75% 100%

<€880 €880-960 €960-1040 €1120+

The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

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Daily rate avg. 960 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

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Median rate 980 €

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 26 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.