Jan L.-Development of a web application in the field of geolocation and speech-to-text
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Experience
Development of a web application in the field of geolocation and speech-to-text
SDP Digitale Produkte GmbH / Treeva GmbH
- Developed a frontend web application with Angular
- Developed components based on FIGMA designs
- Integrated map data from various sources
- Mapped dynamic group and item structures
- Developed backend components / microservices with NestJs
- Designed functional and technical concepts
- Requirements engineering
- Technologies: Angular 15+ (RxJS, NgXs), Docker / K8s, Node.js, NestJs, AWS
Maintenance and development of internal projects
PAYBACK GmbH
- Migrated projects to Spring 4/5/Boot
- Developed features for batch systems and customer portal
- Advised on architecture decisions regarding Spring Boot
- Technologies: React (Redux), Java 8/11, Spring / Spring Boot, Oracle Database Server, Weblogic
Software Developer & Consultant
Freelancer
- On-site / remote software development projects
- Consulting on architecture and technology
- Setting up development processes and teams
- Technologies: Java, Spring Boot, React, Angular
Development of a web application in the field of Forestry 4.0
LogBuch GmbH (subsidiary of Stihl AG)
- Developed the frontend web application with React
- Built a geographic information system to provide map data
- Developed microservices with Java & Spring
- Advised on architecture decisions regarding microservices, authentication, etc.
- Technologies: React (Redux), Docker / K8s, Java 8, Spring / Spring Boot, Android (Kotlin) - support
Project support for Spring migration
VICO Research & Consulting GmbH
- Migrated projects to Spring 4
- Changed authentication method to OAuth2 with JSON Web Token (JWT)
- Technologies: Java, Spring, Spring Boot
IT Architect & Lead Software Developer
Daimler Financial Services GmbH
- Defining the architecture of new digital projects
- Developing MVP projects
- Setting up the required infrastructure
- Technologies: Spring Boot, React
- Process: Scrum & Kanban
Technical Lead & Senior Software Developer
VICO Research & Consulting GmbH
- Responsible for the development process (Scrum)
- Ensuring and controlling code quality
- Technical leadership of a team
- Developing a modern web architecture
- Further developing the interactive social media monitoring tool
- Technologies: Spring / Spring Boot, AngularJs
- Process: Scrum & Kanban
Developer for architecture and consulting
Bosch Software Innovations GmbH
- Member of the architecture council
- Developing a Smart Home system
- Supervising a bachelor's thesis
- Technologies: Android, OSGi
- Process: Scrum
Master thesis: conceptual design, prototypical implementation and evaluation of a system aimed at flexibility and adaptability
Bosch Software Innovations GmbH
Research Assistant
Hochschule Furtwangen
- Revising lecture materials for the "Integration Engineering" lecture
Working student in software development
COMSOFT GmbH
- Development of an Eclipse Mylyn-TestTrack Pro connector (bachelor thesis)
- Support in designing and implementing a test framework for a Java application
- Evaluation of continuous integration systems
- Development of a Dita2Docx generator in C#
Research assistant in the IT department
University of Karlsruhe
- Creation of a printer cost billing portal with PHP and MySQL
- Training apprentices in Java, PHP and MySQL
- Service tasks for staff of the Institute of Hydromechanics
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Education, Agriculture, and Banking and Finance.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Quality Assurance, Customer Service, and Research and Development.
Skills
- Microsoft Windows – Solid Knowledge (Installation, Configuration, Services, Maintenance)
- Linux – Solid Knowledge (Installation, Configuration, Server Services)
- Java – Professional Knowledge (Spring, Spring Boot, Maven / Gradle)
- Javascript / Typescript – Professional Knowledge (Angular, React, Node.Js)
- Databases – Solid Knowledge (Mongodb, Mysql, Postgresql)
- Android – Solid Knowledge (Layout, Robospice, Roboguice, Robolectric)
- Uml – Professional Knowledge
- Software Architecture – Professional Knowledge
- Scrum – Professional Knowledge
- Arc42 – Very Good Knowledge
- Ms Office – Solid Knowledge
- Driver'S License Class B
Languages
Education
Furtwangen University
Master's · Application Architecture · Furtwangen, Germany
Karlsruhe University of Applied Sciences
Bachelor's · Computer Science · Karlsruhe, Germany
Carl Engler School Karlsruhe
Technical college entrance qualification · Karlsruhe, Germany
Certifications & licenses
Driver's license class B
MongoDB Certificate M101J: MongoDB for Java Developers
Statistics
Experience
Expertise
Qualifications
Profile
Frequently asked questions
Have questions? Find more information here.
Jan is based in Karlsruhe, Germany and can operate in on-site, hybrid, and remote work models.
Jan speaks the following languages: German (Advanced), English (Advanced).
Jan has at least 21 years of experience. During this time, Jan has worked in at least 12 different roles and for 10 different companies. The average length of individual experience is 2 years and 9 months. Note that Jan may not have shared all experience and actually has more experience.
Based on recent experience, Jan would be well-suited for roles such as: Development of a web application in the field of geolocation and speech-to-text, Maintenance and development of internal projects, Software Developer & Consultant.
Jan's most recent position is Development of a web application in the field of geolocation and speech-to-text at SDP Digitale Produkte GmbH / Treeva GmbH.
In recent years, Jan has worked for SDP Digitale Produkte GmbH / Treeva GmbH and Freelancer.
Jan is most experienced in industries like Information Technology, Education, and Agriculture. Jan also has some experience in Banking and Finance.
Jan is most experienced in business areas like Information Technology, Product Development, and Quality Assurance. Jan also has some experience in Customer Service and Research and Development.
Jan has recently worked in industries like Information Technology.
Jan has recently worked in business areas like Information Technology and Product Development.
Jan holds a Master in Application Architecture from Furtwangen University and a Bachelor in Computer Science from Karlsruhe University of Applied Sciences.
Jan has 2 certificates. These include: Driver's license class B and MongoDB Certificate M101J: MongoDB for Java Developers.
The availability of Jan needs to be confirmed.
Daily rate distribution
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Average rates for similar positions
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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 16 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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