Christopher Groß - Freelance Fullstack Developer &...

Q: Where is Christopher based?

Christopher is based in Seevetal, Germany and prefers 100% remote projects.

Q: What languages does Christopher speak?

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

Q: How many years of experience does Christopher have?

Christopher has at least 18 years of experience. During this time, Christopher has worked in at least 3 different roles and for 19 different companies . The average length of individual experience is 1 year . Note that Christopher may not have shared all experience and actually has more experience.

Q: What is Christopher's latest experience?

Christopher's most recent position is Frontend Developer at IAS Ideas & Solutions GmbH .

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

In recent years, Christopher has worked for IAS Ideas & Solutions GmbH , Auteon GmbH , Servermon , 21Platforms , and Art Decor Open Tools .

Q: Which industries is Christopher most experienced in?

Christopher is most experienced in industries like Information Technology , Retail , and Healthcare . Christopher also has some experience in Food and Beverage , Automotive , and Media and Entertainment .

Q: Which business areas is Christopher most experienced in?

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

Q: Which industries has Christopher worked in recently?

Christopher has recently worked in industries like Information Technology , Retail , and Healthcare .

Q: Which business areas has Christopher worked in recently?

Christopher has recently worked in business areas like Information Technology , Product Development , and Operations .

Recommended expert

Seevetal, Germany

Experience

May 2024 - Present

1 year 11 months

Frontend Developer

IAS Ideas & Solutions GmbH

Developed a web application for horse betting
Converted components to script syntax

Oct 2021 - Present

4 years 6 months

Frontend Developer

Auteon GmbH

Developed a web application to search auto parts offers within seconds
Created browser plugins to support the web frontend
Integrated Auth0

Jul 2021 - Present

4 years 9 months

Fullstack Developer

Servermon

Developed a new monitoring software for servers and websites
Built backend in Laravel and frontend in Vue.js with Inertia.js
Simplified installation with an installer and set up complex alert configurations

Apr 2021 - Jun 2021

3 months

Fullstack Developer

21Platforms

Redeveloped the frontend with Nuxt.js and Vue.js
Connected to an existing Laravel backend, created several API endpoints
UX/UI design

Aug 2020 - Present

5 years 8 months

Frontend Developer

Art Decor Open Tools

Redeveloped the frontend with Vue.js and Vuetify
Focused on creating and maintaining HL7 templates
UX/UI design

Apr 2020 - Present

6 years

Fullstack Developer

Zutato

Developed a mobile grocery app for iOS and Android
Backend development in Node.js using the Adonis.js framework
UX/UI design

Mar 2020 - Jul 2024

4 years 5 months

Fullstack Developer

Bauer Systems KG

Redesign of the Curablu care aids website
Implementation of new features

Oct 2018 - Feb 2021

2 years 5 months

Fullstack Developer

BrandsListen GmbH

Development of a real-time chat application
Backend development in Node.js using the Adonis.js framework
Frontend development with Nuxt.js/Vue.js

Aug 2018 - Present

7 years 8 months

Fullstack Developer

Hansa Angelköderversand GmbH

Set up a new Shopware system
Complete design creation
Automated product and image imports

Jan 2018 - Nov 2020

2 years 11 months

Fullstack Developer

LegalTech Systems GmbH & Co KG

Further development of the backend and frontend of legal software
Expanded the MyRight customer portal using Vue.js
Implemented DocuSign for legally binding online signatures

Jan 2018 - Dec 2018

1 year

Backend Developer

RatePay GmbH

Further development of the Pixi inventory management app

Jan 2018 - Dec 2018

1 year

Backend Developer

Top Concepts GmbH

Pixi inventory management app development for Klarna

Jan 2017 - Dec 2017

1 year

Fullstack Developer

OnTravel GmbH

Development of a WordPress site
WordPress plugin for managing cruise ship trips
Server maintenance

Nov 2016 - Oct 2017

1 year

Fullstack Developer

Software Developer, Web For Life e.K.

Implementation of symmetric and asymmetric encryption
Finding and fixing security vulnerabilities
Significant performance optimization in applications
Execution of comprehensive custom projects
WordPress plugin development
Server administration and optimization
Implementation of responsive design

Jul 2013 - Oct 2016

3 years 4 months

Fullstack Developer

Software Developer, Top Concepts GmbH

Training other employees on responsive design
Implementation of responsive design
Implementation of several shop systems (B2C and B2B)
Conversion of an OXID shop into an event booking system with ticket printing
Development of numerous OXID modules
Development of custom JavaScript libraries (across projects)
Customer support (problem solving and implementing additional customer requests)
Pixi app development (Klarna, Moneybookers, PayOne)
Project management

Jan 2013 - Jun 2013

6 months

Fullstack Developer

Software Developer, GoodGameStudios / AltiGi GmbH

Design and development of a new shop system using Zend Framework 2
Implementation and deployment of custom ZF2 modules (cross-project)
Integration of the shop system with Amazon AWS
Integration of the shop system with Couchbase
Implementation of multiple payment providers
Development of the shop administration using Twitter Bootstrap
Introduction of PHPUnit tests

Sep 2012 - Present

13 years 7 months

Fullstack Developer

Freelancer, GrossByte

Web design & programming
Pixi app development (Klarna, Moneybookers, PayOne)
MyRight backend development for the largest lawsuit in Europe
Implementation of mini-games (cross-platform / web / Windows application)
App for home automation
Server management

Jan 2011 - Dec 2012

2 years

Fullstack Developer

Software Developer, InnoGames GmbH

Implementation of multiple payment providers
Refactoring of the InnoGames shop backend
Redesign of the InnoGames shop frontend
Development of a bonus event system for the shop
Development of an A/B testing tool
Performance optimization of the shop system in backend and frontend
Implementation of a Google Analytics tool in Java

Nov 2007 - Jan 2011

3 years 3 months

Fullstack Developer

Software Developer, Gamigo AG

Reprogramming of the Gamigo shop system in backend and frontend
Implementation of multiple payment providers
Development of in-game item shops
Development and design of landing pages
Database analysis
Creation of marketing, technical, and gaming tools
Server administration of Linux systems
Regular server maintenance for a top game

Industry Experience

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

Experienced in Information Technology, Retail, Healthcare, Food and Beverage, Automotive, and Media and Entertainment.

Information Technology

Retail

Healthcare

Food and Beverage

Automotive

Media and Entertainment

Business Area Experience

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

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

Information Technology

Product Development

Operations

Project Management

Quality Assurance

Summary

Hello! I'm Christopher Groß - a fullstack developer and freelancer from Hamburg. I've been coding since 2005 and working full time as a freelancer since 2018. Remote, on an hourly basis, sometimes solo and sometimes as support in existing teams.

I started in the gaming industry with complex payment and shop systems, then worked at agencies and startups across all sectors. What has always driven me is the desire to not just make things work, but to build them right.

I'm a developer with 20 years of experience – and now also an AI orchestrator. I know both worlds, and I know how to connect them. AI makes me faster and more productive, but the craft behind it remains mine.

Skills

Javascript / Typescript / Node.js
Vue.js / Vuetify / Adonis.js / Express / Socket.io / Jquery
Php5 / Php7 / Php8
Laravel / Lumen / Zend Framework 2 / Yii2 / Wordpress / Oxid Eshop Ce/pe/ee
Html5 / Css3
Less / Sass / Twitter Bootstrap / Pug / Blade / Twig / Responsive Web Design / Material Design
App Development: Capacitor / Ionic / Nativescript
Databases: Mysql / Mssql / Couchbase
Systems: Linux Server / Aws / Nginx / Apache / Bash Scripting

Languages

German

Native

English

Advanced

Education

Aug 2005 - Jun 2007

AkaTe Ausbildungs GmbH

Technical Assistant in Computer Science · Leipzig, Germany

Aug 1999 - Jun 2005

20. Mittelschule

Secondary school diploma · Leipzig, Germany

Certifications & licenses

OXID eShop Certified Engineer (EE)

Halle

OXID eShop Certified Engineer (PE)

Halle

Statistics

Experience

Total positions 19

Experience in Information Technology 18.5 y

Avg length 3 y 5 m

Longest experience 13 y 6 m

Expertise

Recent roles Frontend Developer, Fullstack Developer, Backend Developer

Main industries Information Technology, Retail, Healthcare

Main business areas Information Technology, Product Development, Operations

Qualifications

Certifications earned 2

Profile

Created

September 2025

Last Update

March 2026

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Frequently asked questions

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

Where is Christopher based?

Christopher is based in Seevetal, Germany and prefers 100% remote projects.

What languages does Christopher speak?

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

How many years of experience does Christopher have?

Christopher has at least 18 years of experience. During this time, Christopher has worked in at least 3 different roles and for 19 different companies. The average length of individual experience is 1 year. Note that Christopher may not have shared all experience and actually has more experience.

What roles would Christopher be best suited for?

Based on recent experience, Christopher would be well-suited for roles such as: Frontend Developer, Fullstack Developer, Backend Developer.

What is Christopher's latest experience?

Christopher's most recent position is Frontend Developer at IAS Ideas & Solutions GmbH.

What companies has Christopher worked for in recent years?

In recent years, Christopher has worked for IAS Ideas & Solutions GmbH, Auteon GmbH, Servermon, 21Platforms, and Art Decor Open Tools.

Which industries is Christopher most experienced in?

Christopher is most experienced in industries like Information Technology, Retail, and Healthcare. Christopher also has some experience in Food and Beverage, Automotive, and Media and Entertainment.

Which business areas is Christopher most experienced in?

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

Which industries has Christopher worked in recently?

Christopher has recently worked in industries like Information Technology, Retail, and Healthcare.

Which business areas has Christopher worked in recently?

Christopher has recently worked in business areas like Information Technology, Product Development, and Operations.

What is Christopher's education?

Christopher attended AkaTe Ausbildungs GmbH for Technical Assistant in Computer Science.

Does Christopher have any certificates?

Christopher has 2 certificates. These include: OXID eShop Certified Engineer (EE) and OXID eShop Certified Engineer (PE).

What is the availability of Christopher?

Christopher is immediately available part-time for suitable projects.

What is the rate of Christopher?

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