Mario Volke - Frontend Developer for React and Next.js

Recommended expert

Munich, Germany

Check rate

Experience

Nov 2024 - Present

1 year 10 months

Freelance Developer

Centrotherm International AG

Did a complete rewrite of centrotherm.de with Next.js, migrating from Gatsby
Built a system to automatically generate printable product datasheets
Technologies: React, TypeScript, Storybook, SASS, Next.js, I18n

Apr 2023 - Present

3 years 5 months

Freelance Developer

Neo Commerce

Consulted and developed AI enhancements for existing Neocom products and built sophisticated AI solutions on top of existing infrastructure
Technologies: AI, LLM, Embeddings, Vector search, Python, React, Next.js, TypeScript

Feb 2022 - Dec 2022

11 months

Freelance Developer

Funct.ion

Built a Squarespace-like component-driven website editor
Technologies: React, Redux, TypeScript, Webpack, NPM, living styleguide (Storybook), server-side rendering, performance and PageSpeed

Aug 2019 - Jan 2020

6 months

Freelance Developer

Lightning Labs

Built the lightning.engineering website
Technologies: React, SASS, Gatsby, Webpack

Apr 2018 - Present

8 years 5 months

Freelance Developer

Hoffmann Group

Developed a design system and component library used company-wide to build tools, websites and configurators
Technologies: React, TypeScript, Storybook, SASS, Next.js, living styleguide, component library, web components, Rollup, release management, community management

Feb 2018 - Jun 2024

6 years 5 months

Freelance Developer

DealerCenter Digital

Built the client software for BikeCenter, a touch terminal assisting bike dealers in their selling process, serving as tech lead and developing the entire client
Handed over the project to an internal team
Technologies: React, Redux, TypeScript, Electron, Node.js, Express.js, SASS, Docker, Storybook, ElasticSearch, Webpack, GraphQL

Mar 2015 - Present

11 years 6 months

Freelance Developer

All3dp

Developed the client side of the website all3dp.com and the price comparison service craftcloud3d.com
Technologies: Next.js, React, Redux, TypeScript, SASS, unit and integration testing, Webpack, AWS, NPM, Storybook, release management

Jan 2015 - Dec 2019

5 years

Freelance Developer

ProSiebenSat.1

Developed 7TV Profile Service, Glomex Video Player, SevenOne Ad Integration and schattenmoor.de
Technologies: React, Node.js, JavaScript, OAuth, JWT, Chromecast

Dec 2014 - Present

11 years 9 months

Freelance Developer

Derivo

Built and maintained SemSpect, a web application to visualize and explore semantic graph data
Technologies: JavaScript, Ext.js, D3.js, SASS, Neo4j

Sep 2009 - Dec 2010

1 year 4 months

Academic Assistant

University of Ulm

Institute of Artificial Intelligence
Subject area: Semantic Web

Apr 2006 - Present

20 years 5 months

Freelance Web Developer

Web application development for clients including ProSiebenSat.1 TV Deutschland GmbH, Hoffmann Group, DealerCenter Digital GmbH, All3DP GmbH, centrotherm international AG and Neo Commerce GmbH

Industry Experience

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

Experienced in Manufacturing, Information Technology, Media and Entertainment, Retail, and Education.

Manufacturing

Information Technology

Media and Entertainment

Retail

Education

Business Area Experience

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

Experienced in Information Technology, Product Development, and Research and Development.

Information Technology

Product Development

Research and Development

Skills

Typescript And Javascript
Node.Js
Oauth
React And Redux
Relational Databases (Postgresql)
Unit And Integration Testing
Html And Css
Nosql: Mongodb And Redis
Docker
Sass And Css-In-Js
Elasticsearch
Aws
Responsive Webdesign
Cms: Prismic
Cms: Strapi
Cms: Hygraph
Release Management
Component-Driven
Living Styleguides
Processwire
Requirements Engineering
Apis: Rest
Graphql
Jwt
Npm
Webpack
Vite
Rollup
Ai: Llms
Ai: Embeddings
Ai: Rags
Ai: Mcp
Next.Js
Figma
Sketch

Languages

German

Advanced

English

Advanced

Education

Oct 2009 - Apr 2012

TU Munich

Master of Computer Science · Computer Science · Munich, Germany · 1.1 (approximate equivalent: A)

Sep 2006 - Sep 2009

University of Ulm

Bachelor of Computer Science · Computer Science · Ulm, Germany · 1.1 (approximate equivalent: A)

Statistics

Experience

Total positions 11

Experience in Manufacturing 20.5 y

Avg length 6 y 5 m

Longest experience 20 y 4 m

Expertise

Recent roles Freelance Developer, Academic Assistant, Freelance Web Developer

Main industries Manufacturing, Information Technology, Media and Entertainment

Main business areas Information Technology, Product Development, Research and Development

Qualifications

Highest degree Master

Profile

Created

September 2025

Need a freelancer? Find your match in seconds.

Try FRATCH GPT

Frequently asked questions

Have questions? Find more information here.

Mario is based in Munich, Germany.

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

Mario has at least 20 years of experience. During this time, Mario has worked in at least 3 different roles and for 11 different companies. The average length of individual experience is 2 years and 10 months. Note that Mario may not have shared all experience and actually has more experience.

Based on recent experience, Mario would be well-suited for roles such as: Freelance Developer, Academic Assistant, Freelance Web Developer.

Mario's most recent position is Freelance Developer at Centrotherm International AG.

In recent years, Mario has worked for Centrotherm International AG, Neo Commerce, Funct.ion, Hoffmann Group, and DealerCenter Digital.

Mario is most experienced in industries like Manufacturing, Information Technology, and Media and Entertainment. Mario also has some experience in Retail and Education.

Mario is most experienced in business areas like Information Technology, Product Development, and Research and Development.

Mario has recently worked in industries like Manufacturing, Information Technology, and Media and Entertainment.

Mario has recently worked in business areas like Information Technology and Product Development.

Mario holds a Master in Computer Science from TU Munich and a Bachelor in Computer Science from University of Ulm.

Mario is immediately available for suitable projects.

Daily Rate Distribution

0 2 4 6 8

<€720 €720-800 €800-880 €880-960 €960+

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.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

1000

750

500

250

Daily rate avg. 806 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

1000

750

500

250

Median rate 800 €

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.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.