Björn Klose - Senior Developer

Q: Where is Björn based?

Björn is based in Überlingen, Germany .

Q: What languages does Björn speak?

Björn speaks the following languages: German (Native), English (Advanced), Turkish (Advanced), Spanish (Intermediate) .

Q: How many years of experience does Björn have?

Björn has at least 15 years of experience. During this time, Björn has worked in at least 10 different roles and for 16 different companies . The average length of individual experience is 1 year and 11 months . Note that Björn may not have shared all experience and actually has more experience.

Q: What is Björn's latest experience?

Björn's most recent position is Senior Developer at D-Trust GmbH, part of the Bundesdruckerei Group .

Q: What companies has Björn worked for in recent years?

In recent years, Björn has worked for D-Trust GmbH, part of the Bundesdruckerei Group , Paessler AG , and Healex GmbH .

Q: Which industries is Björn most experienced in?

Björn is most experienced in industries like Information Technology , Education , and Healthcare . Björn also has some experience in Automotive , Retail , and Professional Services .

Q: Which business areas is Björn most experienced in?

Björn is most experienced in business areas like Information Technology , Product Development , and Business Intelligence . Björn also has some experience in Marketing , Project Management , and Human Resources .

Q: Which industries has Björn worked in recently?

Björn has recently worked in industries like Healthcare and Information Technology .

Q: Which business areas has Björn worked in recently?

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

Recommended expert

Überlingen, Germany

Experience

Jul 2022 - Apr 2024

1 year 10 months

Berlin, Germany

Senior Developer

D-Trust GmbH, part of the Bundesdruckerei Group

Developed web applications and backend services for secure environment of GEMATIK as basis for applying and managing digital medical professional IDs, focusing on highest security standards
Implemented current frontend technologies, runtime configurable features, and automated delivery in a microservice architecture using Helm charts and GitLab deployment pipelines
Technologies: React, TypeScript, Java, Spring Boot, Docker, Kubernetes, Helm, Tailwind CSS, OpenShift

Jul 2021 - Jun 2022

1 year

Nuremberg, Germany

Senior Developer

Paessler AG

Migrated existing website from a custom Python CMS on Django to a new Neos CMS, including complex workflows for automatic content migration
Created pattern libraries and components for content presentation and developed support systems for better verification of implementation status
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

Developed platform for conducting distributed clinical trials in parallel across multiple locations, ensuring data security through encryption and pseudonymization
Integrated modern approaches such as FHIR for healthcare data storage
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

Developed a social media management dashboard for an online marketing agency 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

Developed an omnichannel messenger for a recruitment startup to centralize communication between hiring managers and candidates
Implemented CRM functions and a mobile app
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

Built a platform for trading recycling materials for a retail startup, featuring real-time communication between multiple traders and automatic bundling of 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 Developer

American International Group (AIG)

Created a web application for insurance brokers to conclude new contracts online with unified, attractive forms and automatic validation
Technologies: HTML, CSS, TypeScript, Angular 4, Material Design, SASS, JSON Schema Forms

Mar 2017 - Aug 2017

6 months

Vienna, Austria

Senior Fullstack Developer

Boulesse GmbH

Developed a management panel for an Austrian shopping startup to manage products in online stores of retailers, offering a simple yet powerful interface for non–eCommerce users
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

Developed an editor for the Zalando Editorial magazine enabling fast, easy content creation with corporate identity compliance, rolled out Europe-wide after successful launch in Germany
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

Built a Slack chatbot for distributed teams to send morning and evening questions to team members, gather progress and mood, and send weekly automated email reports to team and department leads
Enhanced user experience with interactive dialogues and non-linear conversation flows compared to classic surveys
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

Developed an online employee survey system for DAX-listed companies using Symfony 2 and Angular.js, collaborating with experienced HR consultants
Created 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, SwiftMailer; Tools: Jira, Slack, Git flow, Codeship, SMTP, IMAP, Webhooks, REST, Behat, Unit testing, Scrum

Apr 2015 - Jun 2015

3 months

United States

On-site

Full Stack Developer

TalkTenFour SnapVault

Developed an online gallery complementing a mobile app for construction workers and architects to document on-site issues via smartphone and sync in real time at the developer’s headquarters
Integrated iOS app data storage using Parse.com and Amazon S3 for immediate availability in the Angular.js web application
Enabled real-time communication via WebSocket connections and offered as SaaS
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

Developed an online HR management system for SMEs with Laravel and Angular.js, enabling cost-effective, fast collaboration among HR managers, employees, and candidates across devices
Implemented responsive design, REST API, and transactional emails
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, DigitalOcean, Airbrake.io, Keen.io, Intercom.io, Travis CI

Sep 2010 - Jun 2013

2 years 10 months

Pori, Finland

Lecturer

Innovative Business Services @ SAMK

Analyzed educational context in bachelor thesis and continued collaboration with the university to build a social learning platform based on WordPress and BuddyPress used by users from over 20 countries
Developed additional reports and user interfaces to facilitate effective team-based collaboration between instructors and students

Sep 2007 - Jul 2009

1 year 11 months

Bremen, Germany

Business Analyst

TRENZ AG

Collaborated directly with the executive board to define and implement marketing strategy and training concept for core product easyLogic
Worked with technicians and project managers on client projects in automotive and personnel training sectors, acting as liaison between end customers and developers
Managed requirements and implementation planning through prototypes, user stories, and UX diagrams

Jul 2006 - Jun 2007

1 year

New Delhi, India

Volunteer Marketing Staff

Deepalaya

Planned and executed new online campaigns for future and existing donors together with the marketing director of the NGO
Reduced donor onboarding to three clicks and enabled direct credit card processing

Industry Experience

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

Experienced in Information Technology, Education, Healthcare, Automotive, Professional Services, and Retail.

Information Technology

Education

Healthcare

Automotive

Professional Services

Retail

Business Area Experience

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

Experienced in Information Technology, Product Development, Business Intelligence, Marketing, Project Management, and Human Resources.

Information Technology

Product Development

Business Intelligence

Marketing

Project Management

Human Resources

Summary

As a fullstack software developer, I support you in developing new web applications. With a focus on the user and clear communication, I help the development team maintain high quality standards and meet deadlines, and support the company in convincing customers.

Skills

React
Vue.js
Angular
Javascript
Typescript
Html
Css
Php
Java
Mysql

Languages

German

Native

English

Advanced

Turkish

Advanced

Spanish

Intermediate

Education

Aug 2009 - Jun 2010

Satakunta University of Applied Sciences

Erasmus · Pori, Finland

Aug 2007 - Jul 2010

University of Bremen

B.Sc. · Digital Media · Bremen, Germany

Statistics

Experience

Total positions 16

Experience in Information Technology 9.5 y

Avg length 11 m

Longest experience 2 y 9 m

Global Experience

Countries worked in 6 (Germany, United States, Austria, United Kingdom, Finland, +1)

Primary country Germany

Expertise

Recent roles Senior Developer, Senior Fullstack Developer, CTO

Main industries Information Technology, Education, Healthcare

Main business areas Information Technology, Product Development, Business Intelligence

Qualifications

Highest degree Bachelor

Profile

Created

May 2024

Last Update

May 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Björn based?

Björn is based in Überlingen, Germany.

What languages does Björn speak?

Björn speaks the following languages: German (Native), English (Advanced), Turkish (Advanced), Spanish (Intermediate).

How many years of experience does Björn have?

Björn has at least 15 years of experience. During this time, Björn has worked in at least 10 different roles and for 16 different companies. The average length of individual experience is 1 year and 11 months. Note that Björn may not have shared all experience and actually has more experience.

What roles would Björn be best suited for?

Based on recent experience, Björn would be well-suited for roles such as: Senior Developer, Senior Fullstack Developer, CTO.

What is Björn's latest experience?

Björn's most recent position is Senior Developer at D-Trust GmbH, part of the Bundesdruckerei Group.

What companies has Björn worked for in recent years?

In recent years, Björn has worked for D-Trust GmbH, part of the Bundesdruckerei Group, Paessler AG, and Healex GmbH.

Which industries is Björn most experienced in?

Björn is most experienced in industries like Information Technology, Education, and Healthcare. Björn also has some experience in Automotive, Retail, and Professional Services.

Which business areas is Björn most experienced in?

Björn is most experienced in business areas like Information Technology, Product Development, and Business Intelligence. Björn also has some experience in Marketing, Project Management, and Human Resources.

Which industries has Björn worked in recently?

Björn has recently worked in industries like Healthcare and Information Technology.

Which business areas has Björn worked in recently?

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

What is Björn's education?

Björn holds a Bachelor in Digital Media from University of Bremen.

What is the availability of Björn?

Björn is immediately available for suitable projects.

What is the rate of Björn?

Björn's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.