James Cullimore

Freelance Android Developer

James Cullimore
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 5 months

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 5 months

Independent Writer

gitconnected

  • Committed contributor to the gitconnected platform, specializing in writing engaging and informative articles
Aug 2023 - Present
2 years 6 months

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 5 months

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
4 years 4 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 5 months

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

  • Fullstack software & application in creating a modular LIMS (Laboratory Information Management System) & developer tools for automating/simplifying processes in an international agile team (Java, Spring, Spring Boot, Angular, Maven, Elasticsearch, MySQL, MongoDB, HTML, Javascript, CSS, NGINX, NGINX-Clojure, BIRT)
  • 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

Various

Feb 2005 - Aug 2011
6 years 7 months

Diverse work experiences

Various

Skills

Languages

  • Kotlin
  • Java
  • Html
  • Javascript
  • Typescript
  • Css
  • Sql
  • Json
  • Markdown
  • Bash / Cmd / Batch
  • Swift
  • Php

Frameworks

  • Android Sdk
  • Espresso
  • Uikit
  • Swiftui
  • React
  • React Native
  • Vue
  • Node.js
  • Spring
  • Angular
  • Jquery
  • Selenium
  • Swing

Databases

  • Elasticsearch
  • Room
  • Mysql
  • Postgres
  • Firebase Storage
  • Mongodb
  • Mariadb
  • Hsqldb

Operating Systems

  • Android
  • Ios
  • Linux
  • Windows
  • Macos

Tools

  • Maven
  • Gradle
  • Git
  • Ides
  • Junit
  • Microsoft Office
  • Github
  • I18n / A11y
  • Bitrise
  • Bitbucket
  • Confluence
  • Jira
  • Sonar
  • Docker
  • Vmware
  • Aws
  • Firebase

Concepts / Other

  • Agile / Scrum
  • Communication
  • Training
  • Documentation
  • Ui/ux Design
  • Testing
  • Tdd
  • Oop
  • Security

Languages

English
Native
German
Advanced

Education

Sep 2016 - Jul 2019

Zeppelin-Gewerbeschule Konstanz

Apprenticeship · 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

Driving license Class B

Need a freelancer? Find your match in seconds.
Try FRATCH GPT
More actions

Similar Freelancers

Discover other experts with similar qualifications and experience

Stefan Baust
Stefan Baust

Senior Full Stack Developer / Co-Founder / CTO / Head of Development

View Profile
Patrik Garten
Patrik Garten

Technical Lead Conversational AI

View Profile
Christian Golecki
Christian Golecki

Product Owner – Redesign of an iOS and Android SaaS Application Platform

View Profile
Ilker Baltaci
Ilker Baltaci

Freelance Mobile Developer

View Profile
Rafael Kolloch
Rafael Kolloch

Senior Android Developer / Team-Lead

View Profile
Konrad Abe
Konrad Abe

Senior Software Developer

View Profile
Adam Richter
Adam Richter

Senior Software Engineer

View Profile
Urs Steger
Urs Steger

Choreo

View Profile
Andreas Blum
Andreas Blum

Project Lead, Digital Transformation

View Profile
Martin Ejeagwu
Martin Ejeagwu

Associate Lecturer

View Profile
Ulrich Cech
Ulrich Cech

Java Architect/Developer – Freelancer

View Profile
Andrey Sedelnikov
Andrey Sedelnikov

Technology Expert | Consultant

View Profile
Fabian Deitelhoff
Fabian Deitelhoff

Volunteer Examiner for IT Apprenticeships

View Profile
Alexander Schwartz
Alexander Schwartz

Full-Stack Developer (Java/Kotlin/Angular)

View Profile
Ahmet Cavus
Ahmet Cavus

Senior Android Developer

View Profile
Adel Bruno grimm
Adel Bruno grimm

React Native Developer

View Profile
Cristian Serje reyes
Cristian Serje reyes

Team Lead Mobile Native Apps

View Profile
Thomas Hieber
Thomas Hieber

AR App

View Profile
Steven Mohr
Steven Mohr

Freelance Trainer

View Profile
Jan Lüders
Jan Lüders

Senior Developer

View Profile
Marc Haid
Marc Haid

Senior Architect, Coach and Developer

View Profile
Dirk Bolte
Dirk Bolte

Senior Software Developer

View Profile
Matthias Eymers
Matthias Eymers

Lead Android Developer

View Profile
Jens Möller
Jens Möller

Startup Coach & Innovation Expert

View Profile
Orhan Sönmez
Orhan Sönmez

Freelancer Web, React-Native- & Android Development

View Profile
Johannes Ramsauer
Johannes Ramsauer

Project Consultant

View Profile
Jonas Dittrich
Jonas Dittrich

CEO

View Profile
Mohammad Ashraf
Mohammad Ashraf

ParkProReakt

View Profile
Jürgen Fey
Jürgen Fey

AR/VR/XR Architect

View Profile
Patrick Waldschmitt
Patrick Waldschmitt

AI Software Engineer

View Profile