Jan Schulz

Fullstack Developer

Avatar placeholder
Berlin, Germany

Experience

Aug 2025 - Present
6 months

Fullstack Developer

Summify.News

  • Developing an AI-enabled platform that summarizes YouTube channels into daily digests with article and podcast formats.
  • Built scalable backend in Node.js integrating OpenAI Whisper for transcription and GPT for summarization.
  • Implemented frontend in React with TypeScript, ensuring responsive design and accessibility.
  • Set up automated deployment pipelines and CI/CD with Docker & GitHub Actions.
Jun 2024 - Jul 2025
1 year 2 months

Fullstack Developer

Networld GmbH

  • Developed an AI-powered Business Intelligence Competition Tracker application.
  • Implemented real-time analytics dashboards with React and D3/Recharts.
  • Designed microservices in Node.js for scalable data ingestion and processing.
  • Built an online course platform with user authentication, payments, and video hosting.
Jan 2024 - Jul 2025
1 year 7 months

Fullstack Developer

Anonymous client

  • Worked on stealth AI medical startup project (cancelled due to lack of funding).
  • Built HIPAA-compliant infrastructure using AWS and Docker.
  • Developed clinical data dashboards with React, Next.js, and PostgreSQL.
  • Integrated medical AI models for patient data analysis and diagnostics.
Jan 2023 - Present
3 years 1 month

Founder

ReactArchitect.AI

  • Founded and developed SaaS tool for React project visualization and documentation.
  • Architected platform in NextJS 13 (experimental appDir) with TypeScript and React 18.
  • Implemented AI server using Node.js (Express) integrated with OpenAI APIs.
  • Created Electron-based desktop client with OAuth authentication and Stripe billing integration.
Jun 2021 - Dec 2022
1 year 7 months

Fullstack Developer

Fairmas GmbH

  • Enhanced large-scale Business Intelligence application (>165k LOC) built in React.
  • Developed new reporting features improving data insights for 150+ employees.
  • Fixed critical bugs, reducing system downtime and improving stability.
  • Collaborated with backend team to deliver solutions in ASP.NET C#.
Feb 2021 - May 2021
4 months

Fullstack Developer

Granola Studios GmbH

  • Built event management web application for Yabal, a 3D virtual game platform.
  • Designed and implemented microservices with Node.js, Docker, and Kubernetes.
  • Developed real-time event tracking features to support thousands of concurrent users.
  • Ensured secure deployment pipelines and optimized container performance.
Mar 2020 - Feb 2022
2 years

React Native Developer

HyperInteractive GmbH

  • Developed mobile app 'Parti' for theater venue management, published in App Store.
  • Integrated ticketing, scheduling, and push notifications.
  • Optimized performance for smooth user experience on iOS and Android.
  • Worked in an agile team delivering features iteratively.
Jan 2020 - Present
6 years 1 month

Online Teacher

Udemy.com

  • Created comprehensive 'React Training Course' reaching hundreds of students.
  • Designed video lessons, coding exercises, and quizzes for effective learning.
  • Maintained and updated course content with latest React best practices.
  • Received positive student feedback with an average 4.7/5 rating.
Dec 2018 - Present
7 years 2 months

Founder

Linkbox.io

  • Founded a startup building bookmarking and link management platform in React & NodeJS.
  • Won Startup-Weekend Prize for innovative product concept.
  • Implemented multi-user collaboration features and search optimization.
  • Scaled platform to handle thousands of users and millions of links.
Jul 2017 - Present
8 years 7 months

Lecturer

Digital Career Institute Berlin (DCI)

  • Teaching Fullstack React, React Native, NodeJS, HTML, CSS, Linux, and Git.
  • Mentored hundreds of students transitioning into IT careers.
  • Developed curriculum materials with focus on practical, project-based learning.
  • Introduced students to agile methodologies and modern DevOps practices.
Jan 2014 - Aug 2015
1 year 8 months
Germany

Web Developer

PDV-Systeme Erfurt

  • Developed web clients using Angular, HTML5, and Java Spring REST APIs.
  • Built Bugzilla analysis system with jQuery for tracking software issues.
  • Improved system scalability and reduced bug resolution time.
  • Worked closely with stakeholders to refine requirements.
Sep 2013 - Dec 2013
4 months

BI Developer

Flaconi GmbH

  • Built Data Warehouses to support online marketing and storage analysis.
  • Designed ETL processes to handle large datasets efficiently.
  • Provided actionable insights to marketing teams.
  • Ensured data quality and reporting accuracy.
May 2013 - Aug 2013
4 months
Lorem ipsum dolor sit amet

Freelancer IT Consulting

  • Delivered consulting services for IT system architecture and web applications.
  • Advised clients on database design, performance tuning, and cloud migration.
  • Built small-scale tools for business process automation.
Jan 2013 - Apr 2013
4 months

Master Thesis

HHL

  • Researched adaptation of Business Model Generation framework for internet business models.
  • Applied framework to selected startup case studies.
  • Produced academic thesis under supervision of Prof. Dr. Pinkwart.
Jun 2010 - May 2011
1 year

Junior BI Developer

Zalando GmbH

  • Conceived and developed Data Warehouses for operations, marketing, and customer service.
  • Implemented ETL processes in Java and Kettle.
  • Optimized reporting pipelines improving data availability.
  • Collaborated with cross-functional teams to align data requirements.
Aug 2009 - Feb 2010
7 months

Bachelor Thesis

TUM

  • Developed system for detecting human postures on images.
  • Implemented algorithms in C++ using OpenCV.
  • Performed accuracy testing with large datasets.
  • Presented thesis findings at the Chair of Image Understanding and Knowledge-based Systems.
Aug 2008 - Oct 2008
3 months

Intern

Platinnetz GmbH

  • Developed AdWords campaign optimization models.
  • Built mathematical models for viral marketing strategies.
  • Collaborated with marketing team to improve online reach.
Apr 2008 - Aug 2008
5 months

Developer

TUM

  • Developed RFID application for social networks using C#.
  • Led a team of three developers delivering a working prototype.
  • Conducted testing and deployment within university environment.
Apr 2007 - Aug 2007
5 months
Germany

Founder

Bayanoo Ltd

  • Co-founded Germany’s first marketplace for used cellphone contracts.
  • Acted as CTO, leading product development and technical strategy.
  • Built initial platform using PHP and MySQL.
  • Grew platform to several hundred users during initial phase.
Feb 2006 - May 2007
1 year 4 months
Augsburg, Germany

Freelancer

GBC AG Augsburg

  • Built depotspider.de, a platform for managing stock depots.
  • Developed secure web applications for financial data management.
  • Ensured scalability and reliability of platform infrastructure.
Apr 2004 - Jul 2004
4 months

Intern

PDV-Systeme GmbH

  • Worked as software engineering intern on client projects.
  • Assisted in development of internal tools.
  • Gained first professional programming experience.

Skills

  • Javascript
  • React
  • React Native
  • Nextjs
  • Nodejs
  • Sql
  • Linux
  • Typescript
  • Recharts/d3
  • Css/html
  • Aws
  • Jest
  • Mocha
  • Mongodb
  • Java
  • Java Spring
  • Angular
  • C# Asp.net
  • Docker & Kubernetes
  • C
  • C++
  • Langgraph
  • Langchain
  • N8n
  • Openai
  • Whisper Ai
  • Ai Agents

Languages

German
Native
English
Advanced
Spanish
Advanced

Education

Sep 2011 - Sep 2012

Leipzig Graduate School of Management (HHL)

MBA · Leipzig, Germany

Oct 2006 - Apr 2010

Technical University of Munich (TUM)

B.Sc. Computer Science · Computer Science · Munich, Germany

Sep 1996 - Jun 2005

Heinrich-Mann-Gymnasium

Abitur · Erfurt, Germany

Need a freelancer? Find your match in seconds.
Try FRATCH GPT
More actions

Similar Freelancers

Discover other experts with similar qualifications and experience

Marc Haid
Marc Haid

Senior Architect, Coach and Developer

View Profile
Martin Musiol
Martin Musiol

Product Owner AI Learning Platform

View Profile
Philipp Brunenberg
Philipp Brunenberg

Instructor

View Profile
Björn Wilmsmann
Björn Wilmsmann

Software Audit and Architecture Consulting: Portal Software

View Profile
Rüdiger Schulz
Rüdiger Schulz

Full-Stack Software Engineer / Consultant for Digitalization

View Profile
Julien Look
Julien Look

MLOps Engineer

View Profile
Stephan Schnitzler
Stephan Schnitzler

Project and Product Manager, Consultant and Trainer

View Profile
Arne Hendricks
Arne Hendricks

Embedded Fullstack Developer

View Profile
Shamaila Mahmood
Shamaila Mahmood

Senior Software Architect

View Profile
Peter Kortmann
Peter Kortmann

Hardware and Software Developer / Project Manager

View Profile
Christian Golecki
Christian Golecki

Product Owner – Redesign of an iOS and Android SaaS Application Platform

View Profile
Robert Raźniewski
Robert Raźniewski

Software Developer

View Profile
Martin Wenskus
Martin Wenskus

Training and Knowledge Management

View Profile
Fabian Deitelhoff
Fabian Deitelhoff

Volunteer Examiner for IT Apprenticeships

View Profile
Jonas Dittrich
Jonas Dittrich

CEO

View Profile
Ignacio Merino arnaiz
Ignacio Merino arnaiz

Co-Founder

View Profile
Martin Luckmann
Martin Luckmann

Senior Consultant

View Profile
Patrik Garten
Patrik Garten

Technical Lead Conversational AI

View Profile
Eduard Van kleef
Eduard Van kleef

Workshop Leader 'Introduction to AI Development Tools'

View Profile
Kevin Engelhardt
Kevin Engelhardt

CISO as a Service

View Profile
Meik Schindler
Meik Schindler

Freelance Trainer & Consultant

View Profile
Satya Vulise
Satya Vulise

Lead Developer

View Profile
James Cullimore
James Cullimore

Freelance Android Developer

View Profile
Yannick Schuchmann
Yannick Schuchmann

Freelance IT Consultant/Advisor

View Profile
Onik Mia
Onik Mia

SAP SuccessFactors & S4HANA Consultant

View Profile
Stephan Sahm
Stephan Sahm

Senior Data/ML Consultant & Technical Lead

View Profile
Roman Deputat
Roman Deputat

CTO

View Profile
Peter Teich
Peter Teich

Freelance Go-Developer/DevOps-Engineer

View Profile
Manuel Pasieka
Manuel Pasieka

AI Engineer

View Profile
Rainer Langbehn
Rainer Langbehn

Senior IT Consultant, Senior Software Architect, Senior Software Developer, Senior DevOps Engineer

View Profile