I am good at applying modern AI techniques to coding, resulting in rock-solid implementations at rapid speeds. I use Kotlin for Backend and Mobile
Aktualisiert am 02.04.2026
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 02.04.2026
Verfügbar zu: 50%
davon vor Ort: 10%
Flutter
Android
Back-End
Mobile Apps
Kotlin
Java
Cloud
Quarkus
Spring Boot
English
Verhandlungssicher
German
Fortgeschritten
Russian
Muttersprache
Japaneese
Grundkenntnisse

Einsatzorte

Einsatzorte

Berlin (+50km)
Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

2 years 2 months
2024-03 - now

Quarkus Microservices in HealthTech

Staff Backend Engineer Kotlin Java Claude ...
Staff Backend Engineer
Kotlin Java Claude Google Cloud SQL
7 years 6 months
2016-01 - 2023-06

Mobile application for Welt News

Senior Engineer, Staff Engineer, Team Lead Kotlin Java Spring ...
Senior Engineer, Staff Engineer, Team Lead
  • Built and maintained server-driven UI engine on Android and Backend, enabling rapid implementation of business decisions
  • Ensured great DevEx for the team by removing friction, providing clear goals and directions
  • Played a pivotal role in stakeholder discussions, offering timely and informed input to address technical edge cases and prevent adverse impact on the business
  • Led the team of 7 engineers, providing technical expertise and ensuring that progress of the business is not affected by technical debt
  • Managed the team building a culture of open communication and clear focus on outcomes, introducing processes that work for everyone
  • Hired > 10 team members, onboarded and grew engineers fostering collaboration and knowledge sharing
  • Led implementation of business critical GDPR integration meeting all security and legal requirements
  • Led implementation of business logic on the backend, enabling other team members to contribute
  • Supported infrastructure-as-code with Terraform and AWS
  • Led a cross-teams company to enable custom web widgets integration into native apps
  • Provided technical expertise in stakeholder discussions 
Atlassian JIRA Atlassian JIRA Agile
Kotlin Java Spring Spring MVC AWS Terraform JavaScript
Die Welt
3 years 5 months
2020-01 - 2023-05

Built and maintained server-driven UI engine

Team Lead
Team Lead

Tech and team lead for the Android and Mobile Backend team at NMT/WeltN24

  • Built and maintained server-driven UI engine on Android and Backend, enabling rapid implementation of business decisions
  • Ensured great DevEx for the team by removing friction, providing clear goals and directions
  • Played a pivotal role in stakeholder discussions, offering timely and informed input to address technical edge cases and prevent adverse impact on the business
  • Led the team of 7 engineers, providing technical expertise and ensuring that progress of the business is not affected by technical debt
  • Managed the team building a culture of open communication and clear focus on outcomes, introducing processes that work for everyone
  • Hired > 10 team members, onboarded and grew engineers fostering collaboration and knowledge sharing

Axel Springer NMT GmbH & Co.KG
1 year 3 months
2018-10 - 2019-12

Implementation of business critical GDPR integration

Tech Lead / Staff Engineer
Tech Lead / Staff Engineer
  • Led implementation of business critical GDPR integration meeting all security and legal requirements
  • Led implementation of business logic on the backend, enabling other team members to contribute
  • Provided technical leadership to a team of 4 Android engineers, providing technical overview and planning
  • Supported infrastructure-as-code with Terraform and AWS
  • Let a cross-teams company to enable custom web widgets integration into native apps
  • Provided technical expertise in stakeholder discussions
Axel Springer NMT GmbH & Co.KG
1 year 7 months
2017-04 - 2018-10

Android and Backend implementation

Senior Full Stack Engineer
Senior Full Stack Engineer

Led Android and Backend implementation of business critical functionality: Key achievements

  • Seamless cross mobile and web payment integration, picture-in-picture video player implementation
  • Technical debt resolution and refactoring from MVP to MVVM architecture
Axel Springer NMT GmbH & Co.KG
1 year 4 months
2016-01 - 2017-04

Android Engineering

Senior Android Engineer
Senior Android Engineer
Axel Springer NMT GmbH & Co.KG
10 months
2015-04 - 2016-01

Android Engineering

Senior Android Engineer
Senior Android Engineer
Helpling GmbH
6 years 10 months
2008-07 - 2015-04

Mobile games development

Mobile Engineer
Mobile Engineer
  • Mobile games development for a major games publisher
  • Consulting in the field of mobile development for many international clients
Freelance, Electronic Arts

Aus- und Weiterbildung

Aus- und Weiterbildung

2003 ? 2009

Taganrog Institute of Technology Southern Federal University

Master of Computer Science and Technology

Thesis: Modular Architecture and Design Concept of Quantum Computer Simulators


2018 ? 2019

Axel Springer Seminars

New in Leadership: How to be a successful leader


Kompetenzen

Kompetenzen

Top-Skills

Flutter Android Back-End Mobile Apps Kotlin Java Cloud Quarkus Spring Boot

Produkte / Standards / Erfahrungen / Methoden

Profile

With 15+ years of experience I can quickly adapt to new technological stacks. My core expertise is in building Android/Flutter mobile apps, but I am also happy to help with SpringBoot or GoLang, React/NextJs, Terraform, Hashicorp Nomad and many more. With a background in team leadership and management, I can equally well communicate with Product Owners, CxOs, Designers, Backend, and Mobile engineers.

  • 15 years of experience with Android, Flutter, iOS and Backend development
  • 7 years of successful freelance work with international clients
  • 4 years of tech and team leadership, specializing in mobile
  • Proven experience building multiple applications using Android/Kotlin and Flutter/Dart
  • Sound backend development skills in SpringBoot/Kotlin/Terraform/AWS/Nomad
  • Excellent communication and interpersonal skills, robust business-oriented approach


Leadership, Management & Methodologies:

OKR, KPI, Outcomes over Output, Coaching, Team Topologies, Agile Methodologies, Scrum, Kanban, Monitoring and Tracking, Technical team management, technical roadmap, teamwork and project management processes, hiring and interviewing candidates, Jira, Confluence, Figma, Miro


Technical

  • AWS, Digital Ocean, Varnish, Redis, Terraform, Docker
  • Kotlin, Dart, SpringBoot, Java, Javascript, Swift, Golang, Android, iOS, Firebase, React, Redux, RxJava, Dagger, Compose, Backend for Frontend, Server-driven UI, Mobile CMS, Android SDK, Flutter
  • Git, HG, SVN, CVS, Mantis, Perforce, Docker, Github actions, Travis, BItrise
  • jUnit, Espresso, Mockito, Sonarqube, Jacoco, Cucumber, Calabash, Snyk, Renovate

Einsatzorte

Einsatzorte

Berlin (+50km)
Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

2 years 2 months
2024-03 - now

Quarkus Microservices in HealthTech

Staff Backend Engineer Kotlin Java Claude ...
Staff Backend Engineer
Kotlin Java Claude Google Cloud SQL
7 years 6 months
2016-01 - 2023-06

Mobile application for Welt News

Senior Engineer, Staff Engineer, Team Lead Kotlin Java Spring ...
Senior Engineer, Staff Engineer, Team Lead
  • Built and maintained server-driven UI engine on Android and Backend, enabling rapid implementation of business decisions
  • Ensured great DevEx for the team by removing friction, providing clear goals and directions
  • Played a pivotal role in stakeholder discussions, offering timely and informed input to address technical edge cases and prevent adverse impact on the business
  • Led the team of 7 engineers, providing technical expertise and ensuring that progress of the business is not affected by technical debt
  • Managed the team building a culture of open communication and clear focus on outcomes, introducing processes that work for everyone
  • Hired > 10 team members, onboarded and grew engineers fostering collaboration and knowledge sharing
  • Led implementation of business critical GDPR integration meeting all security and legal requirements
  • Led implementation of business logic on the backend, enabling other team members to contribute
  • Supported infrastructure-as-code with Terraform and AWS
  • Led a cross-teams company to enable custom web widgets integration into native apps
  • Provided technical expertise in stakeholder discussions 
Atlassian JIRA Atlassian JIRA Agile
Kotlin Java Spring Spring MVC AWS Terraform JavaScript
Die Welt
3 years 5 months
2020-01 - 2023-05

Built and maintained server-driven UI engine

Team Lead
Team Lead

Tech and team lead for the Android and Mobile Backend team at NMT/WeltN24

  • Built and maintained server-driven UI engine on Android and Backend, enabling rapid implementation of business decisions
  • Ensured great DevEx for the team by removing friction, providing clear goals and directions
  • Played a pivotal role in stakeholder discussions, offering timely and informed input to address technical edge cases and prevent adverse impact on the business
  • Led the team of 7 engineers, providing technical expertise and ensuring that progress of the business is not affected by technical debt
  • Managed the team building a culture of open communication and clear focus on outcomes, introducing processes that work for everyone
  • Hired > 10 team members, onboarded and grew engineers fostering collaboration and knowledge sharing

Axel Springer NMT GmbH & Co.KG
1 year 3 months
2018-10 - 2019-12

Implementation of business critical GDPR integration

Tech Lead / Staff Engineer
Tech Lead / Staff Engineer
  • Led implementation of business critical GDPR integration meeting all security and legal requirements
  • Led implementation of business logic on the backend, enabling other team members to contribute
  • Provided technical leadership to a team of 4 Android engineers, providing technical overview and planning
  • Supported infrastructure-as-code with Terraform and AWS
  • Let a cross-teams company to enable custom web widgets integration into native apps
  • Provided technical expertise in stakeholder discussions
Axel Springer NMT GmbH & Co.KG
1 year 7 months
2017-04 - 2018-10

Android and Backend implementation

Senior Full Stack Engineer
Senior Full Stack Engineer

Led Android and Backend implementation of business critical functionality: Key achievements

  • Seamless cross mobile and web payment integration, picture-in-picture video player implementation
  • Technical debt resolution and refactoring from MVP to MVVM architecture
Axel Springer NMT GmbH & Co.KG
1 year 4 months
2016-01 - 2017-04

Android Engineering

Senior Android Engineer
Senior Android Engineer
Axel Springer NMT GmbH & Co.KG
10 months
2015-04 - 2016-01

Android Engineering

Senior Android Engineer
Senior Android Engineer
Helpling GmbH
6 years 10 months
2008-07 - 2015-04

Mobile games development

Mobile Engineer
Mobile Engineer
  • Mobile games development for a major games publisher
  • Consulting in the field of mobile development for many international clients
Freelance, Electronic Arts

Aus- und Weiterbildung

Aus- und Weiterbildung

2003 ? 2009

Taganrog Institute of Technology Southern Federal University

Master of Computer Science and Technology

Thesis: Modular Architecture and Design Concept of Quantum Computer Simulators


2018 ? 2019

Axel Springer Seminars

New in Leadership: How to be a successful leader


Kompetenzen

Kompetenzen

Top-Skills

Flutter Android Back-End Mobile Apps Kotlin Java Cloud Quarkus Spring Boot

Produkte / Standards / Erfahrungen / Methoden

Profile

With 15+ years of experience I can quickly adapt to new technological stacks. My core expertise is in building Android/Flutter mobile apps, but I am also happy to help with SpringBoot or GoLang, React/NextJs, Terraform, Hashicorp Nomad and many more. With a background in team leadership and management, I can equally well communicate with Product Owners, CxOs, Designers, Backend, and Mobile engineers.

  • 15 years of experience with Android, Flutter, iOS and Backend development
  • 7 years of successful freelance work with international clients
  • 4 years of tech and team leadership, specializing in mobile
  • Proven experience building multiple applications using Android/Kotlin and Flutter/Dart
  • Sound backend development skills in SpringBoot/Kotlin/Terraform/AWS/Nomad
  • Excellent communication and interpersonal skills, robust business-oriented approach


Leadership, Management & Methodologies:

OKR, KPI, Outcomes over Output, Coaching, Team Topologies, Agile Methodologies, Scrum, Kanban, Monitoring and Tracking, Technical team management, technical roadmap, teamwork and project management processes, hiring and interviewing candidates, Jira, Confluence, Figma, Miro


Technical

  • AWS, Digital Ocean, Varnish, Redis, Terraform, Docker
  • Kotlin, Dart, SpringBoot, Java, Javascript, Swift, Golang, Android, iOS, Firebase, React, Redux, RxJava, Dagger, Compose, Backend for Frontend, Server-driven UI, Mobile CMS, Android SDK, Flutter
  • Git, HG, SVN, CVS, Mantis, Perforce, Docker, Github actions, Travis, BItrise
  • jUnit, Espresso, Mockito, Sonarqube, Jacoco, Cucumber, Calabash, Snyk, Renovate

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