Freelancer suchen Projekt erstellen
Malt welcom

Willkommen auf dem Freelancer-Profil von René !

Malt bringt Sie mit den besten Freelancern für Ihre Projekte zusammen. Sie können René kostenlos kontaktieren und sich im Chat austauschen, oder andere Freelancer anschreiben und unverbindliche Angebote einholen.

René Kann

Mobile Architect (iOS / Flutter) | Interim Lead

Kann in folgende Städte reisen: Berlin, Berlin

  • 52.517
  • 13.3888
  • Unverbindlicher Tarif 720 € /Tag
  • Berufserfahrung > 7 Jahre
Angebot einholen Das Projekt startet erst, wenn Sie das Angebot von René annehmen

Dieser Freelancer hat angegeben, ab dem 19.2.2050 wieder für neue Projekte verfügbar zu sein.

Bis zum 19.2.2050

Angebot einholen Das Projekt startet erst, wenn Sie das Angebot von René annehmen

Standort und Mobilität

Berlin, Deutschland
Ist bereit bei Ihnen im Büro zu arbeiten, in
  • Berlin und im Umkreis von 50km
  • Berlin


  • 3 bis 6 Monate
  • ≥ 6 Monate
  • Automobilsektor
  • Gesundheit & Wellness
  • Internet der Dinge
  • Medizin
  • Sport
+2 andere


Malt Freelancer Charta unterzeichnet
Die Charta lesen

Geprüfte E-Mail-Adresse



Github : renekann renekann
  • 13 Follower
  • 18 Repositories
  • 3 Gists

Stack Overflow

Stack Overflow : Rene Kann Rene Kann
  • 319 Reputation
  • 5 Bronze
  • 1 Silber
  • 0 Gold


  • Deutsch

    Muttersprachlich oder zweisprachig

  • Englisch


  • Spanisch



Fähigkeiten (19)

René in wenigen Worten

I am a software engineer with many years of experience for Mobile (iOS / Flutter) and web, including knowledge of the "full-stack" of web technologies for frontend and backend services.

As a developer and technical lead I managed various projects for well-known, multinational clients (e.g. Daimler AG, Mercedes-Benz Museum, Autostadt / Porsche AG, ImmobilienScout24, BKK VBU) and lead teams of varying sizes (between 5 to 15 persons). Having worked in a usability agency for many years and being extremely self-motivated with a strong interest for „usable“ products which are balanced with a technical design for a long term use.

What I can help you with:
- Building a MVP
- to (further) develop an app
- as Interim Tech Lead / Interim CTO
- with refactoring, introducing testability, performance issues
- Mentoring

Projekt- und Berufserfahrung


Öffentlicher Sektor & Körperschaften

Freelance Interim Tech Lead  - Als Freelancer

Berlin, Deutschland

August 2019 - Dezember 2020 (1 Jahr und 4 Monate)

Support for the realisation of (mobile) applications in the field of eHealth and the digitalisation of the health care system. Implementation of an app for insured persons of the BKK VBU to get in contact with your health insurance company and to be able to complete tasks. In addition to the app (flutter), the complete stack was realized on the basis of Kubernetes and various individual services. These services were connected to established standard tools of health insurance companies (e.g. 21c of BITMARCK) to provide data for policyholders.

- Interim Tech Lead for VBU platform
- Mentoring internal developers (Architecture / Coding Standards)
- Realization of the Flutter App and implementation of various services operated with Kubernetes

Successyou GmbH (Part of OSF Digital)


Freelance Senior iOS Developer + Consultant  - Als Freelancer

Berlin, Deutschland

Januar 2019 - Mai 2019 (4 Monate)

Maintained an app for a large multinational corporation of nonalcoholic beverage concentrates which was used by a large group of sales representatives in Europe. The app was highly reactive, connected to Salesforce backend and used Couchbase lite for local persistence. I migrated the app and related frameworks to Swift 4.2 and gave architectural decisions and recommendations.

- Salesforce SDK / Salesforce with iOS
- Used Couchbase lite for local persistence
- International Team

Free2Move (Groupe PSA) - Stellantis


Freelance Senior iOS Developer + Consultant  - Als Freelancer

Oktober 2018 - Dezember 2018 (2 Monate)

Working in an English speaking environment I supported with test-driven implementation of a complete new feature for multi provider registration. Did the architectural decisions and recommendations, gave a workshop about introducing testability for the overall project and helped migrating from Objective-C to Swift 4.x

- Introduced testability and gave workshop about testing
- International Team
- Migration from Objective-C to Swift
TDD Swift Objective-C UnitTest Migration Objective-C to Swift Testability Workshop



Freelance Senior iOS Developer + Consultant  - Als Freelancer

Januar 2018 - September 2018 (8 Monate)

Working in an English speaking environment I supported with test-driven implementation of new product functions using Swift / Objective-C and MVVM, MVP in biweekly sprints for the ImmobilienScout24 App. I also consulted in evaluation of new product ideas, feasibility study to connect external service providers.

BitingBit GmbH


Freelance Senior iOS Developer + Consultant  - Als Freelancer

Januar 2017 - Dezember 2017 (11 Monate)

Support in maintaining an iOS app for a leading German multinational automotive company. Implemented new features in weekly sprints, performed code reviews and refactored several parts of the app to reduce technical debt. I also implemented an app (from scratch) for visitors of congresses to manage their favorite lectures, asking questions to the referents and reviewing the whole event agenda. The app uses Google Firebase as backend, the main architecture is built upon MVVM and set its focus upon offline capabilities to deal with bad network coverage.
Mentoring Swift Objective-C Automotive Experience Firebase REST Services

UCDplus GmbH


CTO + Mobile Lead

Mai 2011 - Dezember 2016 (5 Jahre und 7 Monate)

Technical lead and manager of various projects for well-known, multinational clients (e.g. Daimler AG, Mercedes-Benz Museum, Autostadt / Porsche AG). I implemented iOS apps as lead developer as part of a team with varying sizes like the Daimler AG Entertainment app, the Daimler AG Jobs app, an app for the Porsche AG for the new opened Porsche pavilion at the Autostadt Wolfsburg. Besides, I lead the development team and optimized the processes and procedures of the development stack.
Swift Team Lead Product Lead Budgeting Objective-C Mobile Development



Founder and CEO

Magdeburg, Deutschland

Juni 2006 - Dezember 2010 (4 Jahre und 6 Monate)

We implemented rich internet applications (RIA) with Flash, Flex and web applications for various national clients. Main focus was developing customized content management systems and individual web apps.

Ausbildung & Abschlüsse