Hi, I'm Christian Jöcker,
a 

I work as a freelance developer and designer, and am passionate about creating great experiences with beautiful web applications!

What I Can Do for You

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Web Applications

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UX/UI Design

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IoT Platforms

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Rapid Application Development

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Digital Strategy Consulting

strong
Years of Experience
smartphone
Developed Apps
happy face
Happy Customers

Skills

Web Development

React
Angular
TypeScript
Javascript
Remix
Next.js
Node.js
Redux
Zustand
CI/CD
GraphQL
RESTful API design
Prisma
PostgreSQL
database management
security best practices
HTML
CSS
Material-UI
Framer-Motion
Jest
Vitest
Cypress
Playwright
Tailwind CSS
Azure
AWS
AWS CDK
AWS SDK
Docker
VBA
Scrum
Agile

UX/UI Design

Figma
AdobeXD
Photoshop
Illustrator
Affinity Designer
Animate
After Effects
Premiere Pro
user tests
wireframes and prototypes
User-Centered-Design
user journey map
personas
accessibility
red routes
card sorting
responsive design
UX writing
UX research
cross-cultural design
ideation workshops

Core Values

Excellence

Sustainable architecture, clean code, and great UX are my mantras.

Accountable

I stand for my decisions, achievements and mistakes.

Passion

I love what I do and you will notice it!

Kindness

Always eager to help and understand the other side.

avatar of myself meditating

Education and Work Experience

graduate cap
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Mechanical Engineering (B. Eng.)
Sep, 2011 - Aug, 2014 (3y)
Wildau, Germany
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Software Engineer - Virtual Commissioning
Feb, 2015 - Apr, 2018 (3.3y)
Augsburg, Germany
office building
graduate cap
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Master of Business Engineering (MBE®)
Feb, 2016 - Apr, 2018 (2.3y)
Filderstadt, Germany
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Area Manager - Virtual Commissioning
Apr, 2018 - May, 2019 (1.2y)
Augsburg, Germany
office building
office building
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Senior Software Engineer
May, 2019 - Feb, 2023 (3.8y)
Munich, Germany
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Freelance Full-Stack Developer & UX/UI Designer
Feb, 2023 - Present (10m)
Valencia, Spain
office building

Languages

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English
Fluent
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German
Fluent
/build/_assets/paella OH5244GT
Spanish
Fluent
/build/_assets/feijoada MCFLAPF4
Portuguese
Good command

Testimonials

  • /build/_assets/slected me-H3ZRBKLS
    double quotes
    Christian is a very creative person with attention to details. He really puts effort in developing what makes sense for the end user. He is also a fan of clean code and good architecture.
    /build/_assets/david QSH3Z72S.webp
    David Forino
    CTO and co-founder
    Slected.me GmbH
  • /build/_assets/maibornwolff B7NTU5HG
    double quotes
    He perfectly embodies the role of a skilled developer, who not only masters his technologies but also has amazing UX know-how. Both his creativity and entrepreneurial mindset bring his projects and the company forward.
    /build/_assets/paula 7P7JNY4G.webp
    Paula Montesa Rausell
    Lead Digital Design Engineer
    MaibornWolff GmbH

Community Contributions

My Apps

Open Source Contributions

MUI (Material-UI) logo
MUI (Material-UI)
Framer Motion logo
Framer Motion

Stack Overflow

stack overflow logo
Reputation
4,453
1
34
40

Last Attended Courses and Conferences

conference
UXDX Dublin
Oct, 2023
course
AWS Certified Cloud Practitioner
Neal Davis – Mar, 2023
course
Refactoring UI
Tailwind Labs Inc – Dec, 2022
course
Praise at Eye Level
Stephanie Salecker – Sep, 2022
course
Docker and Kubernetes
Stephen Grider – Jun, 2022
course
Communication Coaching
Moritz Weilandt – May, 2022
conference
React Summit Amsterdam
May, 2022
conference
React Miami
Apr, 2022
course
Radical Honesty
Volker Rupp – Dec, 2021
course
Cloud Instrumentation
MaibornWolff – Apr, 2021
course
Cultural Orientation
Rocio G. Luis – Feb, 2021
course
Liberating Structures
Elisabeth Kistler – Feb, 2021
course
Hacking Workshop
MaibornWolff – Jul, 2020
course
Sketchnoting
Carola Scharvogel – Jun, 2020
course
Epic React
Kent C. Dodds – Jun, 2020
course
Testing Javascript
Kent C. Dodds – Jun, 2020
conference
Scrum Day Stuttgart
May, 2020
course
Good Code
Michael P – Mar, 2020
course
Safe Programming
Philippe Schrettenbrunner – Mar, 2020
course
Architecture Foundation
Jan Schuhmacher – Feb, 2020
course
Frontend Architecture Foundation
Simon Ismair – Feb, 2020
course
Big Pictures
Judith Eckerle – Jan, 2020
course
Professional Scrum with UX
Jeff Gothelf – Jan, 2020
course
Projects Early Phases
Dr. Martina Beck – Dec, 2019
course
Usability School
Kerstin Öchsner & Victoria Müller – Oct, 2019
course
UX Ultimate Guide
Davis Travis – Sep, 2019
course
Your Performance, a Communication Seminar
Nadine Antler & Torsten Voller – Sep, 2019
course
Voice Training
Martin Richter – Aug, 2019
course
Agile Speed Refueling
MaibornWolff – Jul, 2019
course
Business Analysis
Jamal Moustafev – Jul, 2019
course
Test Driven Development
Matt Greencroft – Jun, 2019
course
Affinity Designer
Heiko Deppler – Jan, 2019
christian

About me

Hi, my name is Christian, but my friends call me "Joker". Feel free to do the same. But I need to tell you that I'm bad at telling jokes.

I discovered my passion for programming when I was 9 after my father gave away my beloved dog. To honor his memory, I built a website filled with pictures of him. That's where my love affair with coding began. During high school, I took several graphic design courses and developed a strong interest also in UI design.

In my previous role as a consultant, I specialized in developing custom web applications. There, I had the opportunity to work for big companies across various industries like automotive, tourism, airlines, robotics, and medicine. Unfortunately, my previous projects were confidential. That's why I don't have a portfolio here yet. After years of experience in large corporations, I've ventured into freelance work.

I would love to hear from you and discuss our next project!

handwritten name

Contact Me!

linkedin
twitter
github