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James C.

Freelance Android Developer

Niedereschach, Germany

Experience

Jul 2024 - Apr 2025
10 months

Freelance Android Developer

Normalis

  • Working on Telecommunication Apps on Android under NDA for the Military
  • Participation in the development of backend services (Spring, Java)
  • Android Development, Kotlin, Compose, REST, JSON, State-Machines, Android Studio, IP Communication, Cybersecurity, Agile
Jun 2024 - Sep 2024
4 months

Technical Interviewer

MVPMatch

  • Performing technical interviews with candidates for senior Android & iOS positions
Dec 2023 - Jun 2024
7 months

Senior Android Developer

Lexware

  • Responsibility for the development of Android apps (Kotlin/Java) in an agile environment
  • Participation in the development of iOS apps (Swift) in an agile environment.
  • Conduction of code reviews and optimization on existing source code
  • Writing technical documentation and usage of a ticket system (Confluence & Jira)
  • Defining & implementing automated UI & Unit tests
  • Android Development, Kotlin, Jetpack Navigation, Dagger/Hilt, MOSHI, Retrofit, CI/CD, Git, Coroutines, RX Java, Webview, MVVM, Jira, Confluence, CircleCI, Espresso UI Tests, TDD, REST, Compose, Android Studio, JSON, Cybersecurity, Swift
Sep 2023 - Present
2 years

Freelance Mobile Developer

LTE Consulting

  • Development of several iOS apps (Swift) and Android apps (Kotlin)
  • Project consultation
  • Android Development, Kotlin, Jetpack Navigation, Room, Dagger, Retrofit, CI/CD, Git, Firebase, Coroutines, RX,Java, Webview, MVVM, Jira, Confluence, Espresso UI Tests, TDD, Android Studio, REST, JSON, Cybersecurity, iOS, Swift, UIKit, SwiftUI
Sep 2023 - Present
2 years

Independent Writer

gitconnected

  • Committed contributor to the gitconnected platform, specializing in writing engaging and informative articles.
Aug 2023 - Present
2 years 1 month

Android Instructor

droidcon

  • Design and develop comprehensive Android development curricula tailored to different skill levels, ensuring a structured learning path for students.
Sep 2022 - Present
3 years

Freelance Android Developer

J&C Bachmann

  • Responsibility for the development of Android apps (Kotlin/Java) in an agile environment.
  • Participation in the development of backend & web services (Node, Vue, Javascript, Typescript).
  • Conduction of code reviews and optimization on existing source code
  • Writing technical documentation and usage of a ticket system (Confluence & Jira)
  • Defining & implementing automated UI & Unit tests
  • Android Development, Kotlin, Java, Jetpack Navigation, Room, KOIN, Retrofit, CI/CD, Git, Firebase, Coroutines, RX,Java, Webview, MVVM, Modulation, Code Reviews, Pair Programming, TeamCity, Arc, Android Studio, REST, JSON, Cybersecurity, Vue, Node, Typescript, Javascript
Jun 2022 - Apr 2023
11 months

Freelance Android Developer

Lexware

  • Responsibility for the development of Android apps (Kotlin/Java) in an agile environment
  • Conduction of code reviews and optimization on existing source code
  • Writing technical documentation and usage of a ticket system (Confluence & Jira)
  • Defining & implementing automated UI & Unit tests
  • Android Development, Kotlin, Jetpack Navigation, Dagger/Hilt, MOSHI, Retrofit, CI/CD, Git, Coroutines, RX Java, Webview, MVVM, Jira, Confluence, CircleCI, Espresso UI Tests, TDD, Compose, Android Studio, REST, JSON
Dec 2021 - Dec 2022
1 year 1 month

Mobile Software Engineer

FarmerJoe GmbH

  • Responsibility for the development of Android, iOS & React Native apps in an agile environment
  • New development of React Native, iOS & Android apps (Kotlin) in an agile team
  • Conduction of code reviews and optimization on existing source code
  • Writing technical documentation and usage of a ticket system (Confluence & Jira)
  • Defining & implementing automated UI & Unit tests
  • Participation of technical interviews of new employees
  • Android Development, Kotlin, CI/CD, Git, Webview, CircleCI, TDD, Google Maps SDK, iOS, React, React Native
Nov 2021 - Jan 2022
3 months

Freelance Fullstack/Lowcode Developer

Die Biberei

  • Development and documentation of Proof-of-Concept software ideas
  • AWS
Oct 2021 - Present
3 years 11 months

Freelance Mobile Developer

Benefits.me

  • Technical consulting & training of new Android & iOS developers
  • Participation in the development of iOS apps (Swift) and Android apps (Kotlin)
  • Reviewal of tickets in the SCRUM Team
  • Participation in the conception of testing
  • Code Reviews
  • Android Development, Kotlin, Jetpack Navigation, Room, Dagger, Retrofit, CI/CD, Git, Firebase, Coroutines, RX,Java, Webview, MVVM, Jira, Confluence, Espresso UI Tests, TDD, Android Studio, REST, JSON, Cybersecurity, iOS, SwiftUI, UIKit
Sep 2019 - Nov 2021
2 years 3 months
Schiltach, Germany

Mobile Application Developer

Hansgrohe SE

  • Responsibility for the development of iOS & Android apps in an agile environment
  • New development of iOS apps (Swift) and Android apps (Kotlin, Java) in an agile team
  • Conduction of code reviews and optimization on existing source code
  • Writing technical documentation and usage of a ticket system (Confluence & Jira)
  • Management of external development teams
  • Defining & implementing automated UI & Unit tests
  • Android Development, Kotlin, Jetpack Navigation, Dagger/Hilt, MOSHI, Retrofit, CI/CD, Git, Coroutines, RX Java, Webview, MVVM, Jira, Confluence, CircleCI, Espresso UI Tests, IoT, Backend, TDD, Weather API, Android Studio, REST, JSON
Sep 2016 - Present
9 years

Freelance Android Developer

James Cullimore - Software Engineering

  • Development of countless Android, iOS and React Apps
  • Web and API development
  • Development in nearly all branches using countless possible technology combinations
  • Project, architecture and security consultation
  • Work on Open Source Projects
Sep 2016 - Jul 2019
2 years 11 months
Konstanz, Germany

Software Engineering Trainee

Eurofins Genomics (previously GATC Biotech GmbH)

  • Fullstack software & application in creating a modular LIMS (Laboratory Information Management System) & developer tools for automating/simplifying processes in an international agile team. (Technologies: Java, Spring, Spring Boot, Angular, Maven, Elasticsearch, MySQL, MongoDB, HTML, Javascript, CSS, NGINX, NGINX-Clojure, BIRT) (Development tools: Eclipse, Visual Studio, Notepad++)
  • Performing diagnostics & bug fixes in development & productive systems.
  • Changing, extending & implementing legacy systems.
  • User guides & technical documentations with Markdown, Javadoc & Microsoft Office.
  • Code quality assurance via E2E tests, JUnit tests & JaCoCo.
  • Evaluation, initial setup & integration of modern/new technologies such as Elasticsearch & NGINX-Clojure.
  • Apprenticeship with regular visits to Zeppelin Vocational School in Konstanz for technical education.
Aug 2011 - Aug 2016
5 years 1 month
Germany

Diverse work experiences

Feb 2005 - Aug 2011
6 years 7 months

Diverse work experiences

Languages

English
Native
German
Advanced

Education

Sep 2016 - Jul 2019

Zeppelin-Gewerbeschule Konstanz

Apprenticeship as IT Specialist in Application Development · IT Specialist in Application Development · Konstanz, Germany

Sep 2006 - Jun 2008

St. Peter's College Secondary School

Leaving Certificate

Sep 2003 - Jun 2006

St. Peter's College Secondary School

Junior Certificate

Certifications & licenses

FETAC Level 6 Course Supervisor Management

FETAC

Driving license Class B

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