Thorsten Gerlach - Freelance Software Developer

Q: Where is Thorsten based?

Thorsten is based in Melsungen, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does Thorsten speak?

Thorsten speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Thorsten have?

Thorsten has at least 12 years of experience. During this time, Thorsten has worked in at least 1 role and for 6 different companies . The average length of individual experience is 1 year and 4 months . Note that Thorsten may not have shared all experience and actually has more experience.

Q: What is Thorsten's latest experience?

Thorsten's most recent position is Freelance Software Developer at Insurance company, Munich, Germany .

Q: What companies has Thorsten worked for in recent years?

In recent years, Thorsten has worked for Insurance company, Munich, Germany , IT company, Munich and Germany .

Q: Which industries is Thorsten most experienced in?

Thorsten is most experienced in industries like Insurance , Information Technology (IT) , and Telecommunication . Thorsten also has some experience in Automotive .

Q: Which business areas is Thorsten most experienced in?

Thorsten is most experienced in business areas like Information Technology (IT) , Product Development , and Quality Assurance (QA) .

Q: Which industries has Thorsten worked in recently?

Thorsten has recently worked in industries like Information Technology (IT) and Insurance .

Q: Which business areas has Thorsten worked in recently?

Thorsten has recently worked in business areas like Information Technology (IT) , Quality Assurance (QA) , and Product Development .

Recommended expert

Melsungen, Germany

Experience

Jan 2023 - Dec 2024

2 years

Freelance Software Developer

Insurance company, Munich, Germany

Implemented modernization measures to optimize processes in the insurance domain
Replaced old interfaces with newer APIs
Merged several smaller solutions into one main solution to improve builds and increase efficiency in the development process
Replaced the persistence solution in the backend from Telerik to NHibernate
Created unit tests to secure the code

Sep 2021 - Aug 2024

3 years

Freelance Software Developer

IT company, Munich, Germany

Developed new features for existing software
Complete redevelopment of a successor software to measure and evaluate high-frequency filters
Analyzed and fixed bugs in existing issues
Improved persistence in the backend
Contributed to specifications, designed architecture, and created and maintained framework components for the new software
Developed the successor software backend and core
Wrote unit tests to secure the code
Coordinated with international teams

Mar 2021 - Aug 2021

6 months

Freelance Software Developer

Insurance company, Munich, Germany

Developed an interface for data exchange between two systems
Extended an existing API with additional features
Defined requirements and designed the interface
Processed data within the existing software
Handled authentication between the systems
Contributed to the overall solution
Wrote unit tests to secure the code
Coordinated with international teams

Sep 2018 - Dec 2020

2 years 4 months

Freelance Software Developer

Insurance company, Munich, Germany

Developed new features, fixed bugs, and tested software in the insurance domain
Advanced existing client/server software with new features across different development branches
Analyzed existing software for improvements and bug fixes
Created unit tests and scenario tests to ensure the implemented code
Communicated with various web APIs (REST)
Extended database integration with Telerik
Coordinated with international teams

May 2017 - Aug 2018

1 year 4 months

Freelance Software Developer

Security company, Munich, Germany

Analyzed and optimized the existing software architecture
Automated the data generation process for producing SIM cards
Optimized and fixed bugs in existing software processes
Conducted performance and stability tests on the automated solution
Developed tools for quality assurance and data validation
Coordinated development with international teams
Coached end users of the application software

Jul 2016 - Mar 2018

1 year 9 months

Freelance Software Developer

Company, Bonn, Germany

Further development and implementation of new features, as well as bug fixes, for software that automatically analyzes mobile network data
Integration and creation of SQL database queries to display data within the software as tables and on an OSM-based map
Bug fixes and development of new features for the map, based on C# and WinForms
Graphical enhancements within the map

Jan 2016 - Jun 2016

6 months

Freelance Software Developer

Swiss company

Further development and implementation of new features for software for automated data collection and analysis with mobile devices and RF broadband scanners
Integration of an automotive dead-reckoning device for additional localization during brief GPS signal loss
Evaluation of an alternative measurement engine to replace the existing Core Measurement Engine

Jan 2015 - Dec 2015

1 year

Freelance Software Developer

Large company, Munich, Germany

Further development and implementation of new features, as well as error analysis and resolution, for software that collects and analyzes data with RF broadband scanners
Collaboration on technical specifications and maintenance
Build and test automation
Implementation of additional GPS devices for data collection over Bluetooth/USB using the NMEA protocol
Fine-tuning of broadband scanner measurement rates in different user scenarios

Sep 2012 - Dec 2014

2 years 4 months

Freelance Software Developer

Large company, Munich, Germany

Development of new software for data collection and analysis using hardware devices in the cellular network domain (GSM, UMTS, LTE)
Collaboration on technical specifications, architecture design, and creation and maintenance of framework components
Co-development of system and integration tests
Development of algorithms and integration of automatic detection of cellular channels with RF broadband scanners
Automatic hardware detection of various broadband scanners within the software
Development of various scenarios to simplify measurement tasks for the user

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Insurance (4.5 years), Information Technology (4.5 years), Telecommunication (4.5 years), and Automotive (0.5 years).

Insurance

Information Technology

Telecommunication

Automotive

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (12 years), Quality Assurance (10.5 years), and Product Development (10.5 years).

Information Technology

Quality Assurance

Product Development

Summary

I am a freelance electrical engineer (M.Sc.) specializing in software development and architecture.
Focus areas: software development in C# .Net, object-oriented analysis and design.
After my studies, I chose to work independently so I could work on a variety of topics and continuously expand my knowledge with exciting projects.
For balance, I enjoy endurance sports in my free time.

Skills

Languages/frameworks: Microsoft .Net 8
Languages/frameworks: Microsoft .Net Framework 4.8
Languages/frameworks: C#, Wpf, Winforms, Linq, Entity Framework, Nhibernate, Rest, Wcf
Languages/frameworks: Xml, Uml
Database: Sql (Microsoft, Oracle), Sqlite
Methods: Design Patterns, Mvvm, Client/server
Testing: Unit Tests, Integration Tests, System Tests, Automated Tests
Applications: Visual Studio, Ms-sql Management Studio, Ms-sql Server, Sql Developer, Toad, Enterprise Architect, Ants Performance & Memory Profiler
Tools: Resharper, Dotcover, Azure Devops, Jira, Tortoisesvn, Rational Team Concert, Rational Clearcase, Git
Extensions: Moq, Rhino Mocks, Nunit, Nuget, Devexpress, Jenkins, Stylecop, Conqat, Telerik, Swagger, Iis Express
Agile Development: Scrum
Technology: Gsm, Umts, Lte, Gps
Soft Skills: Quick Comprehension
Soft Skills: Result-oriented And Independent Working Style
Soft Skills: Analytical Thinking
Soft Skills: Flexibility
Soft Skills: Team Player
Soft Skills: Structured And Planning Approach
Soft Skills: Quality Awareness
Soft Skills: Confident Appearance
Soft Skills: Resilience

Languages

German

Native

English

Advanced

Education

Mar 2011 - Sep 2012

University of Kassel

Master's in Electrical Engineering, focus on Information Technology · Electrical Engineering · Kassel, Germany · 1.3

Oct 2006 - Mar 2011

University of Kassel

Diploma in Electrical Engineering, focus on Information Technology · Electrical Engineering · Kassel, Germany · 1.5

Profile

Created

September 2024

Last Update

September 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Thorsten based?

Thorsten is based in Melsungen, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Thorsten speak?

Thorsten speaks the following languages: German (Native), English (Advanced).

How many years of experience does Thorsten have?

Thorsten has at least 12 years of experience. During this time, Thorsten has worked in at least 1 role and for 6 different companies. The average length of individual experience is 1 year and 4 months. Note that Thorsten may not have shared all experience and actually has more experience.

What roles would Thorsten be best suited for?

Based on recent experience, Thorsten would be well-suited for roles such as: Freelance Software Developer.

What is Thorsten's latest experience?

Thorsten's most recent position is Freelance Software Developer at Insurance company, Munich, Germany.

What companies has Thorsten worked for in recent years?

In recent years, Thorsten has worked for Insurance company, Munich, Germany, IT company, Munich and Germany.

Which industries is Thorsten most experienced in?

Thorsten is most experienced in industries like Insurance, Information Technology (IT), and Telecommunication. Thorsten also has some experience in Automotive.

Which business areas is Thorsten most experienced in?

Thorsten is most experienced in business areas like Information Technology (IT), Product Development, and Quality Assurance (QA).

Which industries has Thorsten worked in recently?

Thorsten has recently worked in industries like Information Technology (IT) and Insurance.

Which business areas has Thorsten worked in recently?

Thorsten has recently worked in business areas like Information Technology (IT), Quality Assurance (QA), and Product Development.

What is Thorsten's education?

Thorsten holds a Master in Electrical Engineering from University of Kassel.

What is the availability of Thorsten?

Thorsten is immediately available part-time for suitable projects.

What is the rate of Thorsten?

Thorsten's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.