Go to Website
  • en
  • de

Björn K.

Senior Developer

Überlingen, Germany

Experience

Jul 2022 - Apr 2024
1 year 10 months
Berlin, Germany

Senior Developer

D-Trust GmbH, Teil der Bundesdruckerei-Gruppe

  • For use in the secure environment of GEMATIK, we developed web applications and backend services that form the basis for requesting and managing digital doctor ID cards.
  • Alongside the highest security standards, the focus was on using up-to-date frontend technologies, easy runtime configuration, and automatic delivery in a microservice architecture via Helm charts and GitLab deployment pipelines.
  • Technologies: React, TypeScript, Java, SpringBoot, Docker, Kubernetes, helm, Tailwind CSS, OpenShift
Jul 2021 - Jun 2022
1 year
Nuremberg, Germany

Senior Developer

Paessler AG

  • For the established IT monitoring company, the existing website was migrated from a custom Python-based CMS to a new Neos CMS on Django.
  • In addition to complex workflows for automatic content migration, we created pattern libraries and components for rendering content and developed support systems to better track implementation progress.
  • Technologies: PHP, Neos CMS, Flow, Fusion, Docker, MySQL, Tailwind CSS, Python 3, Django, GitLab
Mar 2020 - Jun 2021
1 year 4 months
Cologne, Germany

Senior Developer

Healex GmbH

  • For a startup in the digital health sector, we built a platform that allows distributed clinical trials to run in parallel at multiple sites.
  • Alongside top data security standards through encryption and pseudonymization, we used modern approaches like FHIR for storing health data.
  • Technologies: PHP, REST APIs, Symfony, OpenAPI, Vue 3, Quasar, node.js, Docker, Cypress, Storybook
Dec 2019 - Feb 2020
3 months
Uelzen, Germany

Senior Fullstack Developer

Automi GmbH

  • For an online marketing agency, we developed a social media management dashboard to document, adjust, and analyze campaigns and budgets over time.
  • Technologies: TypeScript, Angular 8, RxJS, PWA, Web Workers, GraphQL, Laravel, node.js, git, TDD
Feb 2019 - Nov 2019
10 months
United States

CTO

jump HR

  • For a recruitment startup, we created an omnichannel messenger to centralize communication between hiring managers and candidates in one interface.
  • CRM features and a mobile app complete the package.
  • Technologies: TypeScript, React, React Native, Redux, Iguazu, GraphQL, REST, Material Design, node.js
Jul 2018 - Dec 2018
6 months
Berlin, Germany

Senior Fullstack Developer

Deutsche Wertstoffbörse

  • For a retail company’s startup, we built a platform for trading recycling materials.
  • In addition to real-time communication between multiple traders, we focused on automatically bundling offers from different providers.
  • Technologies: Typescript, Vue.js, Vuex, WebSockets, vert.x, Infinispan, Kotlin, AWS, REST APIs
Sep 2017 - May 2018
9 months
Heilbronn, Germany

Senior Frontend Entwickler

American International Group (AIG)

  • For the insurer, we built a web application that allows insurance brokers to issue new contracts online.
  • The complex forms for creating quotes were made consistent, user-friendly, and included automatic validation for brokers.
  • Technologies: HTML, CSS, Typescript, Angular 4, Material Design, SASS, JSON Schema Forms
Mar 2017 - Aug 2017
6 months
Vienna, Austria

Senior Fullstack Entwickler

Boulesse GmbH

  • For the Austrian shopping startup, we developed a management panel that lets retailers easily manage their online shop products.
  • The simplified but powerful interface allows customers without eCommerce experience to start selling online quickly.
  • Technologies: HTML, CSS, JavaScript, Vue.js, React, Gulp, JSP, Spring, Responsive Design
  • Tools: Jira, Confluence, Skype
Jun 2016 - Feb 2017
9 months
Berlin, Germany

Fullstack Developer

Zalando SE

  • With the content marketing team, we built an editor for the Zalando Magazin EDITORIAL to create content quickly, easily, and according to corporate identity and designer guidelines.
  • After its success in Germany, the system was rolled out across Europe.
  • Technologies: HTML, CSS, JavaScript, Angular 2, React, Responsive Design
  • Tools: Google Apps, Sketch, Jira, Skype
Jan 2016 - Mar 2016
3 months
London, United Kingdom

interim CTO

Why.QA

  • Slack chatbot for distributed teams.
  • Sends questions every morning and evening to all team members to track daily progress and mood.
  • At the end of each week, automatic reports are emailed to team and department leads.
  • Compared to classic surveys, it offers a more pleasant daily experience thanks to interactive dialogues and non-linear conversation flow.
  • Technologies: HTML, CSS, JavaScript, Node.js, Lodash, Grunt.js, Backbone.js, Bootstrap 3, MVC, Continuous Integration, Responsive Design, Email Reporting
  • Tools: Slack, git flow, Codeship, Trello, Scrum, botkit.ai
Jun 2015 - Dec 2015
7 months
Cologne, Germany

Senior Developer

Priotas GmbH

  • Online system for employee surveys used by DAX-listed companies, built with Symfony 2 and Angular.js in collaboration with experienced HR consultants.
  • Developed a module to send over 50,000 personalized emails in 28 languages, based on complex decision rules and hierarchical assignments.
  • Technologies: HTML, CSS, JavaScript, Angular.js, Lodash, Grunt.js, Webpack, Bootstrap 3, Symfony 2, Continuous Integration, Responsive Design, PDF Reports, mass email dispatch via SwiftMailer
  • Tools: Jira, Slack, git flow, Codeship, SMTP, IMAP, Webhooks, REST, Behat, Unit testing, Scrum
Apr 2015 - Jun 2015
3 months
United States

Full Stack Developer

TalkTenFour SnapVault

  • Online gallery complementing a mobile app used daily by construction workers and architects.
  • Issue cases are documented on-site via smartphone and consolidated in real time at the developer’s headquarters.
  • The iOS app stores data via Parse.com and Amazon S3, making it immediately available to the Angular.js web app.
  • WebSocket connections enable real-time communication between web and mobile apps.
  • Offered as Software-as-a-Service.
  • Technologies: HTML, CSS, JavaScript, Angular.js, Grunt.js, Karma.js, Bootstrap 3, Parse.com, Mandrill, Continuous Integration
  • Tools: Trello, git flow, Stripe, Intercom.io, Travis CI
Aug 2014 - Jul 2015
1 year
United States

interim CTO

XP3 Talent System

  • Online HR management system for SMEs, built with Laravel and Angular.js in collaboration with experienced HR consultants.
  • Responsive design, REST API, and transactional emails enable cost-effective, fast collaboration among HR managers, employees, and job candidates on any device (smartphone, tablet, web, and email clients).
  • Technologies: HTML, CSS, JavaScript, Angular.js, Grunt.js, Karma.js, Bootstrap 3, Laravel, Mandrill, Continuous Integration, Responsive Design, PDF Reports, transactional emails
  • Tools: Trello, git flow, Laravel Forge, Digital Ocean, Airbrake.io, Keen.io, Intercom.io, Travis CI
Sep 2010 - Jun 2013
2 years 10 months
Pori, Finland

Dozent

Innovative Business Services @ SAMK

  • After analyzing the educational context for my bachelor’s thesis, I continued collaboration with the university.
  • Based on WordPress and BuddyPress, we created a social learning platform used by people from over 20 countries, with additional reports and user interfaces that enable effective team-based collaboration between teachers and students.
Sep 2007 - Jul 2009
1 year 11 months
Bremen, Germany

Business Analyst

TRENZ AG

  • In direct collaboration with the executive board, I defined and implemented the marketing strategy and training concept for the core product easyLogic.
  • Together with engineers and project managers, we delivered customer projects in the automotive and personnel training sectors.
  • I served as the liaison between end clients and software developers, handled requirements management, and planned implementation via prototypes, user stories, and UX diagrams.
Jul 2006 - Jun 2007
1 year
New Delhi, India

Ehrenamtlicher Mitarbeiter, Marketing

Deepalaya

  • Together with the marketing director, we planned and executed new online campaigns for current and future donors of the NGO.
  • We reduced the onboarding process for new donors to three clicks and enabled direct credit card processing.

Summary

As a fullstack software developer, I help you build new web applications. Focusing on the user and clear communication, I support the development team in meeting high quality standards and deadlines, and help the company impress its clients.

Languages

German
Native
English
Advanced
Turkish
Advanced
Spanish
Intermediate

Education

Aug 2009 - Jun 2010

Satakunta University of Applied Sciences

Pori, Finland

Aug 2007 - Jul 2010

Universität Bremen

B.Sc., Digital Media · Germany

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

Similar Freelancers

Discover other experts with similar qualifications and experience

Timo R.

Expert Software Developer

View Profile
Jörn B.

Project Management and PMO

View Profile
Peter M.

Backend Engineer

View Profile
Fatih K.

Mobile App Developer

View Profile
Cesar S.

Lead Cloud Engineer

View Profile
Matthias S.

Software Developer and Consultant

View Profile
Doğan U.

E-Commerce Development

View Profile
Caglar Ö.

Lecturer

View Profile
Adil S.

Mobile/Backend Developer

View Profile
Andre F.

Data transformation and homogenization between multiple backend systems

View Profile
Andreas K.

Senior Developer

View Profile
Jewgenij S.

Mobile Engineer

View Profile
Vincent R.

Microsoft Enterprise Solutions Consultant | Freelancer

View Profile
Sebastián K.

Further development of "ROAD-Kit"

View Profile
Stephan S.

Senior Data/ML Consultant & Technical Lead

View Profile
Albert F.

Lead Product Owner

View Profile
Rodrigue K.

Fullstack Development

View Profile
Alexandre S.

Cloud Software Engineer

View Profile
Christof N.

Senior Developer

View Profile
Jana B.

Computer Vision Lawn Diseases

View Profile
Julian H.

Lecturer

View Profile
Benedikt B.

Implementation of a Time Tracking Software

View Profile
Anton K.

Head of Technical Overall Integration NSC

View Profile
Immanuel B.

Senior Full-Stack Developer

View Profile
Matthias M.

Architecture Review, Documentation and Change Management Process

View Profile
Hannah D.

Fullstack Developer

View Profile
Nico S.

Freelance Software Engineer

View Profile
Christian W.

Senior Lead Software Engineer

View Profile
Thomas R.

Architect, Developer

View Profile
Siegfried-Thor B.

AEM expert in architecture, development, cybersecurity & AI (Vertex AI, Gemini, OpenAI), vector search & CMS transformation

View Profile
fratch Part of Bitkom logo
linkedIncrunchbaseyoutube
  • English
  • Deutsch

2025 © FRATCH.IO GmbH. All rights reserved.