Hanjo Schumacher

Hi, I am Hanjo

Hanjo Schumacher

Software Engineer

Striving for simplicity is not only inviting, but a crucial point for the team to get better. I love mobility and accessability in all its varieties - and I am excited about technology and new features to try out.

In combination with process optimization, creating new ones, or thinking out of the box, I enjoy creating less stressful environments for the team and myself.

Collaboration
Leadership
Curiosity
Process Optimization
Decision Making
Listening

Skills

Career

1
Technikboerse.com, Deutscher Landwirtschaftsverlag GmbH

Jan 2016 - Dec 2023

Würzburg, Bavaria

Technikboerse.com is an online marketplace for agricultural machinery, forestry equipment, transport equipment, municipal equipment and wine-growing equipment. The marketplace is aimed at both private customers and dealers.

Senior Full-Stack Engineer

Jul 2019 - Dec 2023

Responsibilities:
  • Redesign of large parts of the platform in collaboration with UX professional
  • SCRUM-based team collaboration
  • Structurize and migrate multiplatform frontend libraries to introduce and improve theming
  • Design, implement and manage sellingtool campaigns
  • Performance-enhancing and web vitals
  • Upgrade backend infrastructure (PHP 7 to 8, Zend Framework to Laminas)
  • Implement and manage currency conversions
Backend Developer

Jan 2016 - Jun 2019

Responsibilities:
  • Building a role-based access management system (RBAC)
  • Design, implement and manage the mail communication infrastructure, including logging, webhooks, mail filter, mail blocks, blacklisting, duplicate handling and multipart templating
  • Concept and introduce registration & authentication methods, account and ad management
  • Software product lead for sellingtools products, stocklist and tb magazine
Mobilemerc.com

Oct 2013 - Dec 2015

Mainz, Rhineland-Palatine

mobilemerc.com, mobile development, open source projects

Contributor

Oct 2013 - Dec 2015

Responsibilities:
  • Bydcontrol OSC App
  • Website Design & PHP development
2
3
IZKS Mainz

Nov 2010 - Sep 2013

University Medical Center of the Johannes Gutenberg-University Mainz

Professional, GCP compliant consulting, planning, coordination, evaluation and publication of clinical trials in accordance with all applicable legal requirements

Junior Developer

Nov 2010 - Sep 2013

Responsibilities:
  • Backend PHP Development & System Administration

Academics

Johannes Gutenberg-University Mainz, Rhineland-Palatine
2008-2015
Computer Science & Musicology M.A.
Taken Courses:
  • Software Quality Management
  • Software Engineering
  • Client- And Serverside Web Applications
  • Programming Languages
  • Software Engineering Internship
  • Mathematics For Computer Scientists
  • Mathematics Internship
  • Serverside Web Applications
  • Introduction To Programming
  • Introduction Software Development
  • Theoretical Fundementals Of Computer Science I
  • Theoretical Fundementals Of Computer Science II
  • Geoinformatics I
  • Geoinformatics II
  • Web Applications Internship
  • Databases Workshop
Extracurricular Activities:
  • Interdisciplinary Activities (International Holiday Courses, Info Days) for the Department of International Affairs
  • Network administrator of dormitory Hechtsheim
Thesis:
Web-based interfaces for controlling musical applications
Supervisor:
Dr. Albert Gräf
Friedrich-Leopold-Woeste Gymnasium Hemer, North Rhine-Westphalia
1996-2006
General Qualification For University Entrance

Projects

Bydcontrol
Bydcontrol
Owner 2014 - 2015

A JavaScript library to control your OSC enabled devices.

academic opensource
Star
Bydcontrol Live OSC Android
Bydcontrol Live OSC Android
Owner 2014 - 2024

Bydcontrol Live OSC uses the Bydcontrol Javascript Framework for creating compliant interfaces to communicate to external applications via OSC.

academic
Star
MagicMirror² Waste Collection Wuerzburg Plugin
MagicMirror² Waste Collection Wuerzburg Plugin
Owner 25.09.2024

This is a Magic Mirror module to display waste collection dates of Würzburg on your MagicMirror² displays.

opensource diy
Star
GravCMS Cookie Consent Plugin
GravCMS Cookie Consent Plugin
Owner 2024

A GravCMS Plugin of orestbidas CookieConsentv3 JavaScript plugin.

opensource
Star
Large ESP8266 LED Shelf Clock
Large ESP8266 LED Shelf Clock
Large ESP8266 LED Shelf Clock
User 2024

A build of the LED clock designed by DIYMachines and a ESP8266 fork.

opensource diy
Star
My own 3D print CAD designs
My own 3D print CAD designs
Creator 2020 - present

A small list of my own CAD designs posted at thingiverse.

diy
Star

Hanjo.dev Blog

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Building a woody-white wall board using IKEA LACK tables

This article shows how to build a wooden 'woody-white' wall board using IKEA LACK tables, that is stylish and inexpensive all at once. A couple of month ago I incidentally stumbled across a youtube tutorial of a do-it-yourself genius creating a LED shelf clock nailed on a wooden base. I was so fascinated by what the person was doing, and his tutorial was detailed and well-structured both, that I decided to build one myself. The obstacle I had to hurdle was, that I had no wooden plate that was large enough to hold the 1,12 m shelf clock, and I had no car to buy and transport a suitable one in a do-it-yourself store, and I did not want to pay large shipping costs just to buy a simple wooden board. Finding the right material So I knew I needed to keep a lookout for a wooden plate, that was affordable, lightweight and easy-to-transport. And why not combine two smaller plates to create a larger one? I thought about using a combination of IKEA LACK tables, but to build a board with a minimum length of 1,12 m, and with a default length of 55 cm of a...

Wednesday, April 17, 2024 Read
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Use home assistant to dynamically update your porkbun DNS records

Dynamic DNS is very helpful, to be able to access your local network, when your are not at home. This article shows, how to manage your porkbun.com DNS records and how to keep them in sync with your local network with the help of home assistant. It is a fantastic idea to deploy your own cloud services at home, to embrace digital freedom and have full control over your own data. But to be able to manage your cloud, passwords, smarthome or automations, your little server in the form of a raspberry pi, odroid or similar device needs to be accessible from the outside world. Likely your internet service provider refreshes your DHCP lease once per day, and assigns a new IP address to your network. To be able to access your network without guesswork, it is recommended to have your own domain or subdomain, which points to that network address. I am going to show you, how to update the DNS records of your at porkbun.com registered domain via home assistant and porkbun API to reference your current IP. Well, of course there are plenty of ways to update DNS records (ddclient, custom scripts, ...), but I chose home...

Saturday, June 1, 2024 Read
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Create a Grav CMS cookie consent plugin using PHP

Grav CMS is such a lightweight and convenient content management system for building your own blog or portfolio page. It offers freedom to beginner and intermediate+ backend engineers to make adjustments according to their needs. As a flat filesystem based CMS building your own theme or plugin is unsurprisingly simple. In this article I'm gonna share my experiences in building your first Grav CMS plugin. Prequisites What you need for building your own Grav CMS plugin, is of course an up-and-running Grav CMS setup. I am fully satisfied with a buildup using docker and docker-compose and a minimalistic docker-compose.yaml configuration file. --- services: grav: image: lscr.io/linuxserver/grav:latest container_name: grav environment: - PUID=1000 - PGID=1000 - TZ=Etc/UTC volumes: - $PWD/grav/config:/config ports: - 8090:80 restart: unless-stopped Running docker-compose up -d exposes the desired services on port 8090 of your host system and the admin panel is accessible via localhost:8090/admin. After completing the basic setup, you are almost good to go. Grav CMS provides its own package manager, which makes it easier to manage new themes or plugins. You gain access by punching in docker exec -it -w /app/www/public grav bin/gpm. In future references I won't be displaying the full docker...

Thursday, August 8, 2024 Read
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