Recommended expert
Andreas Spernol-Freelance Software Developer
Check rate
Experience
Apr 2025 - Present
1 year 1 monthMobile and Web Portal Full-Stack Development (Freelance)
Position Summary
Mobile and Web Portal Full-Stack Development (Freelance)
Industries
Information Technology
Business Areas
Information Technology
Product Development
- Maintenance and further development of a web portal and a mobile app as a full-stack developer.
- Handling customer requests and bug fixes.
- Implementing REST APIs and database access with Java Spring.
- Maintaining and enhancing a web frontend with AngularJS.
- Maintaining and enhancing an iOS and Android mobile app with Qt/C++/QML, including updating the app in the respective stores.
- Technologies: Qt/C++/QML, AngularJS, Java Spring, MongoDB, OAuth.
Aug 2024 - May 2025
10 monthsFull-Stack Web Portal Development (Logistics)
Position Summary
Full-Stack Web Portal Development (Logistics)
Industries
Transportation
Business Areas
Information Technology
- Maintenance and further development of a web portal in the logistics sector as a full-stack developer.
- Implementing backend logic and REST APIs with ASP.NET Core, SQL, and Entity Framework.
- Implementing the login process with JWT and token refresh.
- Implementing the web frontend with Blazor.
- Technologies: C#/.NET, Blazor, ASP.NET Core, SQL, Entity Framework, JWT.
Mar 2024 - Nov 2025
1 year 9 monthsBackend Modernization (Banking)
Position Summary
Backend Modernization (Banking)
Industries
Banking and Finance
Business Areas
Information Technology
- Member of the internal Scrum team as a backend developer.
- Implementing REST APIs, business logic, and database access with C#/.NET, Entity Framework, and LINQ.
- Configuring and customizing the application using JavaScript.
- Technologies: C#/.NET, ASP.NET Core, SQL, Entity Framework, LINQ, NUnit, JavaScript, Scrum.
Nov 2017 - Dec 2023
6 years 2 monthsHead of Software Development
Traxon Technologies Europe GmbH
Position Summary
Head of Software Development at Traxon Technologies Europe GmbH
Industries
Manufacturing
Business Areas
Information Technology
Product Development
- Leading an international team of 12 (DE, HK, Shanghai), ensuring time-to-market for new lighting control products.
- Implementing and standardizing Azure DevOps build pipelines (CI/CD) to automate tests and store uploads, increasing deployment speed and process reliability. Expanding test automation.
- Successfully introducing Flutter as the cross-platform standard, including setting up and training a new UI development team in Shanghai to improve development efficiency.
- Designing and implementing core lighting control software (C#/WPF) and related cross-platform UIs for web, iOS, and Android (Flutter).
- Technologies: Scrum, Jira, Git, Azure DevOps, MS App Center, C#/.NET, WPF, XAML, ASP.NET Core, Xamarin, C++, Flutter, Flutter_test, Mockito, Flutter integration_test, REST, MQTT, gRPC, SignalR, JSON, InfluxDB, Linux (Raspberry Pi), Docker.
Dec 2015 - Oct 2017
1 year 11 monthsFull Stack Senior Software Developer
Traxon Technologies Europe GmbH
Position Summary
Full Stack Senior Software Developer at Traxon Technologies Europe GmbH
Industries
Manufacturing
Business Areas
Information Technology
Product Development
- Designing and developing an automation framework for lighting control.
- Designing and implementing the central lighting control software (C#/WPF).
- Technologies: Visual Studio 2017, C#/.NET, WPF, XAML, NUnit, C++, Scrum, Jira, Git, Linux (Raspberry Pi).
Nov 2009 - Nov 2015
6 years 1 monthFull Stack Software Developer
BST International GmbH
Position Summary
Full Stack Software Developer at BST International GmbH
Industries
Manufacturing
Business Areas
Information Technology
Product Development
- Evaluation of Qt as a foundation for future products.
- Development of a PC software framework using Qt C++/QML to drive a line scan camera and perform image processing tasks.
- Design and development of a network-transparent data layer for interprocess communication.
- Design of the interprocess communication layer and task coordination between the GUI and measurement applications.
- Development of line scan camera software for defect inspection in the printing process (GUI in C# WPF).
- Technologies: Visual Studio 2015, C++, Qt/QML, Team Foundation Server, Qt Creator, C#/.NET, WPF, NUnit, Test-driven Development, CUDA.
Jul 2007 - Oct 2009
2 years 4 monthsBackend Software Developer
dSPACE GmbH
Position Summary
Backend Software Developer at dSPACE GmbH
Industries
Automotive
Business Areas
Information Technology
Product Development
Quality Assurance
- Test-driven backend development for integrating modeled Matlab tasks with a real-time operating system (control engineering).
- Focus on specification, implementation and automated component tests.
- Technologies: Visual Studio 2008, C#/.NET, C++, Matlab, Python, XML, NUnit, Test-driven Development, MKS.
Jun 2006 - Jun 2007
1 year 1 monthBackend Software Developer
AZ Direct GmbH part of Bertelsmann Marketing Services
Position Summary
Backend Software Developer at AZ Direct GmbH part of Bertelsmann Marketing Services
Industries
Advertising
Media and Entertainment
Business Areas
Information Technology
- Development of high-performance address validation software.
- Performance analysis and optimization.
- Technologies: Visual Studio 2005, Intel VTune, ANSI C++, XML, MySQL.
Feb 2002 - May 2006
4 years 4 monthsFull Stack Software Developer
ISRA Vision Lasor GmbH
Position Summary
Full Stack Software Developer at ISRA Vision Lasor GmbH
Industries
Manufacturing
Business Areas
Information Technology
Product Development
Project Management
- Development of image processing software for surface inspection and commissioning of systems at customer sites at home and abroad.
- Development of line scan camera software for defect inspection in the glass manufacturing process.
- Own project responsibility since April 2004.
- Technologies: Visual Studio 6.0, C++, MFC, DCOM/ATL, TCP/UDP-IP, OPC.
Industry Experience
See where this freelancer has spent most of their professional time.
Experienced in Manufacturing, Automotive, Banking and Finance, Information Technology, Transportation, and Advertising.
Manufacturing
Automotive
Banking and Finance
Information Technology
Transportation
Advertising
Business Area Experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, Project Management, and Quality Assurance.
Information Technology
Product Development
Project Management
Quality Assurance
Summary
Experienced software developer and tech lead with over 20 years of experience in designing, architecting, and implementing complex backend and full-stack solutions. Specializing in C#/.NET, C++, and Flutter/cross-platform development. Proven leadership in managing international development teams and establishing agile processes (Scrum, DevOps).
Skills
- Rest Api
- Mobile Applications
- Continuous Integration And Continuous Delivery (Ci/cd)
Languages
German
NativeGreek
IntermediateEnglish
IntermediateEducation
Sep 1997 - Aug 2002
FH Bielefeld
Diploma in Engineering (FH) · Electrical Engineering and Information Technology · Bielefeld, Germany
Aug 1989 - Jan 1993
Siemens AG
Apprenticeship as Energy Electronics Technician (Plant Engineering) · Energy Electronics Technician (Plant Engineering)
Statistics
Experience
Total positions 9
Experience in Manufacturing 18.5 y
Avg length 2 y 9 m
Longest experience 6 y 1 m
Expertise
Recent roles Mobile and Web Portal Full-Stack Development (Freelance), Full-Stack Web Portal Development (Logistics), Backend Modernization (Banking)
Main industries Manufacturing, Automotive, Banking and Finance
Main business areas Information Technology, Product Development, Project Management
Qualifications
Highest degree Bachelor
Profile
Created
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Frequently asked questions
Do you have questions? Here you can find further information.
Where is Andreas based?
Andreas is based in Lage, Germany.
What languages does Andreas speak?
Andreas speaks the following languages: German (Native), Greek (Intermediate), English (Intermediate).
How many years of experience does Andreas have?
Andreas has at least 24 years of experience. During this time, Andreas has worked in at least 7 different roles and for 5 different companies. The average length of individual experience is 3 years and 8 months. Note that Andreas may not have shared all experience and actually has more experience.
What roles would Andreas be best suited for?
Based on recent experience, Andreas would be well-suited for roles such as: Mobile and Web Portal Full-Stack Development (Freelance), Full-Stack Web Portal Development (Logistics), Backend Modernization (Banking).
What is Andreas's latest experience?
Andreas's most recent position is Mobile and Web Portal Full-Stack Development (Freelance).
What companies has Andreas worked for in recent years?
In recent years, Andreas has worked for Traxon Technologies Europe GmbH.
Which industries is Andreas most experienced in?
Andreas is most experienced in industries like Manufacturing, Automotive, and Banking and Finance. Andreas also has some experience in Information Technology, Advertising, and Media and Entertainment.
Which business areas is Andreas most experienced in?
Andreas is most experienced in business areas like Information Technology, Product Development, and Project Management. Andreas also has some experience in Quality Assurance.
Which industries has Andreas worked in recently?
Andreas has recently worked in industries like Manufacturing, Banking and Finance, and Information Technology.
Which business areas has Andreas worked in recently?
Andreas has recently worked in business areas like Information Technology and Product Development.
What is Andreas's education?
Andreas holds a Bachelor in Electrical Engineering and Information Technology from FH Bielefeld.
What is the availability of Andreas?
Andreas is immediately available for suitable projects.
What is the rate of Andreas?
Andreas's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.
How to hire Andreas?
To hire Andreas, click the Meet button on the profile to request a meeting and discuss your project needs.
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
1000
750
500
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Market avg: 672-832 €
Market avg: 672-832 €
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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