Senior Software Engineer - Flutter, Android
Aktualisiert am 07.02.2025
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 07.02.2025
Verfügbar zu: 100%
davon vor Ort: 15%
Spring Boot
Flutter
Android
spring boot
Java
Kotlin
Agile Softwareentwicklung
Scrum
Continuous Integration
Prozessoptimierung
Mobile Apps
Mobile
Multi-Layer Software-Architecture
TDD
Firebase
Kafka
Kubernetes
Docker
Hibernate
Gradle
Maven
JPA
English
fluent
Polish
fluent
German
intermediate)

Einsatzorte

Einsatzorte

Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

4 Monate
2024-11 - heute

Leading development of a Mission-Critical Management System

Project lead & Software Engineer Spring Boot Web FE Mobile FE ...
Project lead & Software Engineer
  • Leading development of a Mission-Critical Management System (Java, Spring Boot, Flutter, Kubernetes) to streamline operations and maximize efficiency for a Madagascar-based children's education NGO.
  • Collaborating with stakeholders to define requirements and establish software architecture, resulting in projected hundreds of hours of staff time saved annually. This increased capacity will enable program expansion and new initiatives to serve more children.
  • Up to 50% of the code is generated using Gemini 1.5 Pro & 2.0, Cloud Sonet 3.5 and GitHub Copilot.
Spring Boot Web FE Mobile FE Leadership Java Flutter Kubernetes
on request
Remote & Rosenheim
1 Jahr 8 Monate
2023-03 - 2024-10

Developed two profitable mobile applications

Senior Software Engineer KeyCloak Matrix Protocol Flutter ...
Senior Software Engineer

  • Developed two profitable mobile applications for the pharmacy sector, increasing efficiency and customer engagement. 
  • ApoPortal:
    • Pharmacy management platform for operations, communication, and workflow optimization. 
  • ApoGuide:
    • Patient app for pharmacy connection, medication orders, appointments, and healthcare information access.
  • Implemented secure communication (Matrix protocol) and integrated Cardlink for health insurance card use.
  • Established software architecture for the applications.
  • Collaborated with Scrum teams and mentored less experienced colleagues.
KeyCloak Matrix Protocol Flutter Healthcare
Gedisa mbH
Remote & Munich
6 Monate
2022-10 - 2023-03

Contributed to the development of a DiGA

Senior Software Engineer Node.js Flutter DiGA ...
Senior Software Engineer
  • Contributed to the development of a DiGA (Digital Health Application), working on both the front-end (Flutter) and back-end (TypeScript).
  • Collaborated with a cross-functional team, including 2 other developers, a UX designer, and a product owner, using agile methodologies.
  • Expanding the existing code base and ensured a successful first release of the application.
Node.js Flutter DiGA Healthcare TypeScript
Treatmind GmbH
Remote & Munich
1 Monat
2022-10 - 2022-10

Rewrote native Android and iOS applications

Lead Software Engineer Flutter Android iOS ...
Lead Software Engineer
  • Rewrote native Android and iOS applications into a new Flutter application, delivering an MVP with added features and an improved layout.
  • Established the app's architecture, ensured code quality, and led the formation of an internal Flutter team.
Flutter Android iOS Nutrition & Health
AJNS New Media GmbH (Kitchen Stories)
Remote & Munich
3 Monate
2022-05 - 2022-07

Developed a Proof-of-Concept application

Senior Software Engineer Flutter Android iOS ...
Senior Software Engineer

  • Developed a Proof-of-Concept application (Flutter, Firebase, GitHub Actions).
  • Developed native Android/Kotlin and iOS/Swift plugins consumed by a Flutter app.

Flutter Android iOS Loyalty Programs Firebase GitHub Actions Kotlin Swift
Loyalty Partner Solutions GmbH
Remote & Munich
2 Jahre 11 Monate
2019-05 - 2022-03

Flutter application

Team Lead, Senior Software Engineer Flutter Android Java ...
Team Lead, Senior Software Engineer

  • Led the design and development of a new Flutter application for MediaMarkt and Saturn, achieving a successful rollout to millions of users across multiple sales lines.
  • Played a key role in building and mentoring three Flutter development teams, fostering a culture of collaboration and excellence.
  • Contributed to legacy application maintenance (Android, iOS) and back-end middleware development (TypeScript).
  • Proficient in agile methodologies, clean architecture, testing (unit tests, integration tests, golden tests) and CI/CD pipelines (Jenkins, Circle CI, GitHub Actions).

Flutter App for MediaMarkt and Saturn
Flutter Android Java Kotlin TypeScript Scrum iOS Swift Agile Softwareentwicklung Continuous Integration GraphQL Clean Architecture E-Commerce Dart Agile CI/CD unit tests integration tests golden tests A/B
Media-Saturn-Holding GmbH
Remote & Munich
2 Jahre 8 Monate
2016-10 - 2019-05

Applications for enterprise clients

Software Engineer - Mobile Android Java Kotlin ...
Software Engineer - Mobile

  • Maintained back end solutions with Spring Framework and APEX.
  • Developed and maintained Android (Kotlin) and iOS (Swift) applications for enterprise clients, including MasterCard, Target,
  • Dublin Airport, and the British Parliament integrating custom Android devices (Kaba devices, badge readers, label printers, NFC).
  • Implemented comprehensive testing strategies, including JUnit and E2E tests.

Android Java Kotlin Flutter SQL JavaScript Custom devices iOS IoT Spring Framework Oracle SQL Security APEX
TDS Ltd
Dublin
1 Jahr 1 Monat
2014-12 - 2015-12

Developed as Spring + AngularJS app

Software Engineer Spring Framework AngularJS Mobile ...
Software Engineer

  • Developed as Spring + AngularJS app for T-Mobile, targeting mobile devices, within a Scrum team environment.
  • Developed an SDK for payment terminal communication with Android devices, including a companion Android application utilizing the SDK via Bluetooth.
  • Developed a map-based web application using AngularJS and OpenLayers3 and Spring.

Spring Framework AngularJS Mobile Telecommunication & Payments Spring
Mobilca Ltd
Bydgoszcz/Lublin
4 Monate
2014-03 - 2014-06

Contributed to a product manager and aggregator

Software Engineer PHP SQL JavaScript ...
Software Engineer

  • Contributed to a product manager and aggregator for a range of PrestaShop installations

PHP SQL JavaScript CSS
MaxConnect GmbH
Poznan
1 Jahr 3 Monate
2011-09 - 2012-11

Developed about 150 independent modules

Software Engineer PHP SQL JavaScript ...
Software Engineer

  • Developed about 150 independent modules and modifications for PrestaShop.
  • Integrated PrestaShop with 3rd party APIs based on both JSON and XML.

PHP SQL JavaScript CSS PrestaShop JSON XML
Greenpage
Poznan
3 Monate
2011-04 - 2011-06

Contributed to an Android application

Software Engineer ? Intern Android
Software Engineer ? Intern
  • Contributed to an Android application for a library according to provided specification
Android
MobileBox Sp. z.o.o
Pozna?

Aus- und Weiterbildung

Aus- und Weiterbildung

1 Jahr 4 Monate
2013-03 - 2014-06

Computer Science

Master, Poznan University of Technology
Master
Poznan University of Technology
3 Jahre 6 Monate
2009-09 - 2013-02

Computer Science

Bachelor, Pozna? Univeristy of Technology
Bachelor
Pozna? Univeristy of Technology

Position

Position


Kompetenzen

Kompetenzen

Top-Skills

Spring Boot Flutter Android spring boot Java Kotlin Agile Softwareentwicklung Scrum Continuous Integration Prozessoptimierung Mobile Apps Mobile Multi-Layer Software-Architecture TDD Firebase Kafka Kubernetes Docker Hibernate Gradle Maven JPA

Schwerpunkte

Flutter
Experte
Android
Experte
Spring Boot
Experte
Java
Experte

Produkte / Standards / Erfahrungen / Methoden

Architecture
Spring Boot
kotlin/java/gradle/maven
Hibernate
JPA
K8s
Docker
Kafka
Flutter
Android
CI/CD
AI tooling
Testing
Agile
Scrum

Profile

Proven software engineering expert with 13+ years of experience delivering high-impact mobile and back-end solutions to millions of users. Focusing on mobile (Android, Flutter) and Spring Boot with passion to learn and grow.


Skills

Back-end

  • Spring Boot
  • SQL, Kubernetes
  • Docker
  • Kafka
  • Spring
  • Kotlin
  • Maven
  • Gradle
  • Hibernate
  • JPA
  • REST
  • Docker


Mobile

  • Android
  • iOS
  • Flutter
  • Firebase
  • Matrix protocol


Technical Skills

  • Software Architecture
  • Code Quality
  • API Design
  • Testing (unit, mocking, integration, golden)
  • Mobile and Back-end Harmony
  • Cooperation


Interpersonal Skills

  • Leadership
  • Mentoring
  • Teamwork
  • Pair Programming & Review
  • Solution-Oriented
  • Adaptable
  • Quick Learner


Tooling

  • NeoVim
  • Git
  • GitHub
  • IDEA
  • Android Studio
  • Kubernetes Lens
  • Copilot
  • Gemini
  • GitHub Actions
  • CodeMagic


Methodologies

  • Scrum
  • Agile
  • Continuous Integration
  • Continuous Deployment
  • Test-driven (unit, integration, E2E)

Programmiersprachen

Dart
Experte
Kotlin
Experte
Java
Experte
TypeScript
Fortgeschritten
SQL
Fortgeschritten
Swift
Fortgeschritten
JavaScript
Fortgeschritten

Design / Entwicklung / Konstruktion

Spring Boot
Experte
Flutter
Experte
Android Native
Experte
Hibernate
Experte
Gradle/Maven
Experte
CI/CD
Experte
Agile/Scrum
Experte
Java/Kotlin/Dart
Experte

Einsatzorte

Einsatzorte

Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

4 Monate
2024-11 - heute

Leading development of a Mission-Critical Management System

Project lead & Software Engineer Spring Boot Web FE Mobile FE ...
Project lead & Software Engineer
  • Leading development of a Mission-Critical Management System (Java, Spring Boot, Flutter, Kubernetes) to streamline operations and maximize efficiency for a Madagascar-based children's education NGO.
  • Collaborating with stakeholders to define requirements and establish software architecture, resulting in projected hundreds of hours of staff time saved annually. This increased capacity will enable program expansion and new initiatives to serve more children.
  • Up to 50% of the code is generated using Gemini 1.5 Pro & 2.0, Cloud Sonet 3.5 and GitHub Copilot.
Spring Boot Web FE Mobile FE Leadership Java Flutter Kubernetes
on request
Remote & Rosenheim
1 Jahr 8 Monate
2023-03 - 2024-10

Developed two profitable mobile applications

Senior Software Engineer KeyCloak Matrix Protocol Flutter ...
Senior Software Engineer

  • Developed two profitable mobile applications for the pharmacy sector, increasing efficiency and customer engagement. 
  • ApoPortal:
    • Pharmacy management platform for operations, communication, and workflow optimization. 
  • ApoGuide:
    • Patient app for pharmacy connection, medication orders, appointments, and healthcare information access.
  • Implemented secure communication (Matrix protocol) and integrated Cardlink for health insurance card use.
  • Established software architecture for the applications.
  • Collaborated with Scrum teams and mentored less experienced colleagues.
KeyCloak Matrix Protocol Flutter Healthcare
Gedisa mbH
Remote & Munich
6 Monate
2022-10 - 2023-03

Contributed to the development of a DiGA

Senior Software Engineer Node.js Flutter DiGA ...
Senior Software Engineer
  • Contributed to the development of a DiGA (Digital Health Application), working on both the front-end (Flutter) and back-end (TypeScript).
  • Collaborated with a cross-functional team, including 2 other developers, a UX designer, and a product owner, using agile methodologies.
  • Expanding the existing code base and ensured a successful first release of the application.
Node.js Flutter DiGA Healthcare TypeScript
Treatmind GmbH
Remote & Munich
1 Monat
2022-10 - 2022-10

Rewrote native Android and iOS applications

Lead Software Engineer Flutter Android iOS ...
Lead Software Engineer
  • Rewrote native Android and iOS applications into a new Flutter application, delivering an MVP with added features and an improved layout.
  • Established the app's architecture, ensured code quality, and led the formation of an internal Flutter team.
Flutter Android iOS Nutrition & Health
AJNS New Media GmbH (Kitchen Stories)
Remote & Munich
3 Monate
2022-05 - 2022-07

Developed a Proof-of-Concept application

Senior Software Engineer Flutter Android iOS ...
Senior Software Engineer

  • Developed a Proof-of-Concept application (Flutter, Firebase, GitHub Actions).
  • Developed native Android/Kotlin and iOS/Swift plugins consumed by a Flutter app.

Flutter Android iOS Loyalty Programs Firebase GitHub Actions Kotlin Swift
Loyalty Partner Solutions GmbH
Remote & Munich
2 Jahre 11 Monate
2019-05 - 2022-03

Flutter application

Team Lead, Senior Software Engineer Flutter Android Java ...
Team Lead, Senior Software Engineer

  • Led the design and development of a new Flutter application for MediaMarkt and Saturn, achieving a successful rollout to millions of users across multiple sales lines.
  • Played a key role in building and mentoring three Flutter development teams, fostering a culture of collaboration and excellence.
  • Contributed to legacy application maintenance (Android, iOS) and back-end middleware development (TypeScript).
  • Proficient in agile methodologies, clean architecture, testing (unit tests, integration tests, golden tests) and CI/CD pipelines (Jenkins, Circle CI, GitHub Actions).

Flutter App for MediaMarkt and Saturn
Flutter Android Java Kotlin TypeScript Scrum iOS Swift Agile Softwareentwicklung Continuous Integration GraphQL Clean Architecture E-Commerce Dart Agile CI/CD unit tests integration tests golden tests A/B
Media-Saturn-Holding GmbH
Remote & Munich
2 Jahre 8 Monate
2016-10 - 2019-05

Applications for enterprise clients

Software Engineer - Mobile Android Java Kotlin ...
Software Engineer - Mobile

  • Maintained back end solutions with Spring Framework and APEX.
  • Developed and maintained Android (Kotlin) and iOS (Swift) applications for enterprise clients, including MasterCard, Target,
  • Dublin Airport, and the British Parliament integrating custom Android devices (Kaba devices, badge readers, label printers, NFC).
  • Implemented comprehensive testing strategies, including JUnit and E2E tests.

Android Java Kotlin Flutter SQL JavaScript Custom devices iOS IoT Spring Framework Oracle SQL Security APEX
TDS Ltd
Dublin
1 Jahr 1 Monat
2014-12 - 2015-12

Developed as Spring + AngularJS app

Software Engineer Spring Framework AngularJS Mobile ...
Software Engineer

  • Developed as Spring + AngularJS app for T-Mobile, targeting mobile devices, within a Scrum team environment.
  • Developed an SDK for payment terminal communication with Android devices, including a companion Android application utilizing the SDK via Bluetooth.
  • Developed a map-based web application using AngularJS and OpenLayers3 and Spring.

Spring Framework AngularJS Mobile Telecommunication & Payments Spring
Mobilca Ltd
Bydgoszcz/Lublin
4 Monate
2014-03 - 2014-06

Contributed to a product manager and aggregator

Software Engineer PHP SQL JavaScript ...
Software Engineer

  • Contributed to a product manager and aggregator for a range of PrestaShop installations

PHP SQL JavaScript CSS
MaxConnect GmbH
Poznan
1 Jahr 3 Monate
2011-09 - 2012-11

Developed about 150 independent modules

Software Engineer PHP SQL JavaScript ...
Software Engineer

  • Developed about 150 independent modules and modifications for PrestaShop.
  • Integrated PrestaShop with 3rd party APIs based on both JSON and XML.

PHP SQL JavaScript CSS PrestaShop JSON XML
Greenpage
Poznan
3 Monate
2011-04 - 2011-06

Contributed to an Android application

Software Engineer ? Intern Android
Software Engineer ? Intern
  • Contributed to an Android application for a library according to provided specification
Android
MobileBox Sp. z.o.o
Pozna?

Aus- und Weiterbildung

Aus- und Weiterbildung

1 Jahr 4 Monate
2013-03 - 2014-06

Computer Science

Master, Poznan University of Technology
Master
Poznan University of Technology
3 Jahre 6 Monate
2009-09 - 2013-02

Computer Science

Bachelor, Pozna? Univeristy of Technology
Bachelor
Pozna? Univeristy of Technology

Position

Position


Kompetenzen

Kompetenzen

Top-Skills

Spring Boot Flutter Android spring boot Java Kotlin Agile Softwareentwicklung Scrum Continuous Integration Prozessoptimierung Mobile Apps Mobile Multi-Layer Software-Architecture TDD Firebase Kafka Kubernetes Docker Hibernate Gradle Maven JPA

Schwerpunkte

Flutter
Experte
Android
Experte
Spring Boot
Experte
Java
Experte

Produkte / Standards / Erfahrungen / Methoden

Architecture
Spring Boot
kotlin/java/gradle/maven
Hibernate
JPA
K8s
Docker
Kafka
Flutter
Android
CI/CD
AI tooling
Testing
Agile
Scrum

Profile

Proven software engineering expert with 13+ years of experience delivering high-impact mobile and back-end solutions to millions of users. Focusing on mobile (Android, Flutter) and Spring Boot with passion to learn and grow.


Skills

Back-end

  • Spring Boot
  • SQL, Kubernetes
  • Docker
  • Kafka
  • Spring
  • Kotlin
  • Maven
  • Gradle
  • Hibernate
  • JPA
  • REST
  • Docker


Mobile

  • Android
  • iOS
  • Flutter
  • Firebase
  • Matrix protocol


Technical Skills

  • Software Architecture
  • Code Quality
  • API Design
  • Testing (unit, mocking, integration, golden)
  • Mobile and Back-end Harmony
  • Cooperation


Interpersonal Skills

  • Leadership
  • Mentoring
  • Teamwork
  • Pair Programming & Review
  • Solution-Oriented
  • Adaptable
  • Quick Learner


Tooling

  • NeoVim
  • Git
  • GitHub
  • IDEA
  • Android Studio
  • Kubernetes Lens
  • Copilot
  • Gemini
  • GitHub Actions
  • CodeMagic


Methodologies

  • Scrum
  • Agile
  • Continuous Integration
  • Continuous Deployment
  • Test-driven (unit, integration, E2E)

Programmiersprachen

Dart
Experte
Kotlin
Experte
Java
Experte
TypeScript
Fortgeschritten
SQL
Fortgeschritten
Swift
Fortgeschritten
JavaScript
Fortgeschritten

Design / Entwicklung / Konstruktion

Spring Boot
Experte
Flutter
Experte
Android Native
Experte
Hibernate
Experte
Gradle/Maven
Experte
CI/CD
Experte
Agile/Scrum
Experte
Java/Kotlin/Dart
Experte

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