Christian Seifert - Full-Stack-Developer

Q: Where is Christian based?

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

Q: What languages does Christian speak?

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

Q: How many years of experience does Christian have?

Christian has at least 12 years of experience. During this time, Christian has worked in at least 4 different roles and for 9 different companies . The average length of individual experience is 1 year and 4 months . Note that Christian may not have shared all experience and actually has more experience.

Q: What is Christian's latest experience?

Christian's most recent position is Full-Stack-Developer at AssistenzUp GmbH .

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

In recent years, Christian has worked for AssistenzUp GmbH , INTERGAST Großverbraucher-Service Handelsgesellschaft mbH , AuA24 AG , IT system house based in Saarbrücken with over 20 years of IT experience , and Leading online retailer in Germany & Europe .

Q: Which industries is Christian most experienced in?

Christian is most experienced in industries like Information Technology , Professional Services , and Food and Beverage . Christian also has some experience in Retail , Telecommunication , and Education .

Q: Which business areas is Christian most experienced in?

Christian is most experienced in business areas like Information Technology , Product Development , and Project Management .

Q: Which industries has Christian worked in recently?

Christian has recently worked in industries like Food and Beverage , Information Technology , and Retail .

Q: Which business areas has Christian worked in recently?

Christian has recently worked in business areas like Information Technology , Product Development , and Project Management .

Recommended expert

Dresden, Germany

Experience

Dec 2024 - Present

1 year 4 months

Full-Stack-Developer

AssistenzUp GmbH

Complete redevelopment of a time and work tracking software for student support and people with disabilities.
Responsible for the fundamental restructuring of the code using Angular 19 (frontend) and Next.js (backend) on a TypeScript basis.
Implemented as a monorepo with NX workspace.
Set up AWS infrastructure and built a GitHub CI/CD pipeline for automated deployments.

Jul 2023 - Present

2 years 9 months

Full-Stack-Developer

INTERGAST Großverbraucher-Service Handelsgesellschaft mbH

Developed a B2B wholesale shop with a microservice architecture.
Used PHP 8.2, Laravel 10, Angular 17, and TypeScript for development and implementation.
Designed and implemented features on both sides of the application.
Collaborated closely with team members for seamless integration and optimal performance.

Sep 2022 - May 2023

9 months

Full-Stack-Developer

AuA24 AG

Developed an innovative software solution in the field of occupational health and safety.
Planned and implemented autonomous subsystems using test-driven development.
Ensured seamless interaction with the existing ecosystem.
Built complex features based on Laravel 10 and Angular 15.

Mar 2022 - Apr 2023

1 year 2 months

Saarbrücken, Germany

Full-Stack-Developer

IT system house based in Saarbrücken with over 20 years of IT experience

Enhanced existing products in both backend and frontend areas.
Made specific customizations for Shopware to meet evolving e-commerce requirements.

Jan 2020 - Dec 2021

2 years

Backend-Core-Developer / Interim Lead-Dev

Leading online retailer in Germany & Europe

Improved the existing checkout process.
Implemented new features, including integration of Payback and expanded payment options.
Co-led and coordinated a development team to meet deadlines.

Jan 2019 - Dec 2019

1 year

Saarbrücken, Germany

Frontend-Developer

IT service provider from Saarbrücken with over 20 years of IT experience

Further development of a React application.
Optimizing usability and implementing new features.
Improving performance and functionality to boost overall performance.

Jan 2018 - Dec 2018

1 year

Frontend-Developer

Blackbit digital Commerce GmbH

Implementation of several e-commerce platforms.
Development of responsive user interfaces.
Implementation of user-friendly features for a smooth shopping experience.
Collaboration with designers and backend developers to deliver high-quality, scalable solutions.

Jan 2017 - Dec 2018

2 years

Full-Stack-Developer

Large German telecommunications provider

Planning and implementation of one of the largest internal order visualization projects.
Collaboration with stakeholders for requirements analysis and development of technical solutions.

Jan 2014 - Dec 2019

6 years

Lead Developer

Behind you GmbH

Leadership and coordination of development projects in various areas.
Planning, execution, and monitoring of software projects to meet customer requirements and ensure timely delivery.
Expanding the service offering and exploring new business opportunities through proactive engagement.

Industry Experience

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

Experienced in Information Technology, Professional Services, Food and Beverage, Retail, Telecommunication, and Education.

Information Technology

Professional Services

Food and Beverage

Retail

Telecommunication

Education

Business Area Experience

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

Experienced in Information Technology, Product Development, and Project Management.

Information Technology

Product Development

Project Management

Summary

My way of working is analytical and results-oriented. I question obvious approaches and strive for the optimal solution. High quality in my daily work as well as open and honest communication with colleagues and customers is my top priority.

I work, think and act with full focus on the larger goal. I can draw on extensive experience in project planning, implementation, project management as well as customer care and consulting.

Classical project management methods are just as familiar to me as agile approaches. In doing so, I like to adapt to practiced methods, always with the aim of demonstrating improvements. What's right is what works.

Skills

Critical
Analytical Thinking
Quick Comprehension
High Quality Awareness
High Willingness To Learn And Improve
Open, Understandable And Direct Communication
More Than Ten Years Of Programming And Project Experience
Backend- And Frontend Languages: Php, Typescript, Html, Css
Frameworks: Laravel, Laminas, Phpunit, React, Vue.js, Express.js, Angular
Frontend-stack: Less, Sass, Webpack, Gulp
Cms & E-commerce Platforms: Wordpress, Joomla, Magento, Shopware, Xt:commerce
Other: Ci/cd, Docker, Test-driven-development
Ihk Certified Trainer For It Specialists

Languages

German

Native

English

Advanced

Certifications & licenses

IHK Certified Trainer for IT Specialists

IHK

Statistics

Experience

Total positions 9

Experience in Information Technology 8.5 y

Avg length 1 y 11 m

Longest experience 5 y 11 m

Global Experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Full-Stack-Developer, Backend-Core-Developer / Interim Lead-Dev, Frontend-Developer

Main industries Information Technology, Professional Services, Food and Beverage

Main business areas Information Technology, Product Development, Project Management

Qualifications

Certifications earned 1

Profile

Created

January 2026

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Frequently asked questions

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

Where is Christian based?

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

What languages does Christian speak?

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

How many years of experience does Christian have?

Christian has at least 12 years of experience. During this time, Christian has worked in at least 4 different roles and for 9 different companies. The average length of individual experience is 1 year and 4 months. Note that Christian may not have shared all experience and actually has more experience.

What roles would Christian be best suited for?

Based on recent experience, Christian would be well-suited for roles such as: Full-Stack-Developer, Backend-Core-Developer / Interim Lead-Dev, Frontend-Developer.

What is Christian's latest experience?

Christian's most recent position is Full-Stack-Developer at AssistenzUp GmbH.

What companies has Christian worked for in recent years?

In recent years, Christian has worked for AssistenzUp GmbH, INTERGAST Großverbraucher-Service Handelsgesellschaft mbH, AuA24 AG, IT system house based in Saarbrücken with over 20 years of IT experience, and Leading online retailer in Germany & Europe.

Which industries is Christian most experienced in?

Christian is most experienced in industries like Information Technology, Professional Services, and Food and Beverage. Christian also has some experience in Retail, Telecommunication, and Education.

Which business areas is Christian most experienced in?

Christian is most experienced in business areas like Information Technology, Product Development, and Project Management.

Which industries has Christian worked in recently?

Christian has recently worked in industries like Food and Beverage, Information Technology, and Retail.

Which business areas has Christian worked in recently?

Christian has recently worked in business areas like Information Technology, Product Development, and Project Management.

Does Christian have any certificates?

Christian has 1 certificate: IHK Certified Trainer for IT Specialists.

What is the availability of Christian?

Christian will be available full-time from July 2026.

What is the rate of Christian?

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