James Cullimore

Freelance Software Developer

James Cullimore • ZZP

Nov 2021 - Present • 5 yrs

I build websites and mobile apps, improve existing software and automate repetitive business tasks. My website work includes building sites for The Muse Agency and Atelier Wiessalla, and making changes to Einzigartiganderssein’s existing WordPress site. For Horoskop-Paradies, I worked on background-process and email automation, Webflow updates, APIs and webhooks. I also helped with technical and business decisions involving analytics, Google Ads and social media, and finding bloggers and marketing support. My mobile work includes rebuilding ZURIGA’s app interface across Android and iOS using Kotlin Multiplatform and Compose Multiplatform, alongside improvements to Bluetooth communication. Other engagements include Android test automation and build optimisation for GLS, and Android/AOSP development and Gradle/CI improvements for blackned. These projects were delivered through partner companies. I work directly with clients to agree the scope, implement the changes and review the finished result. I also create technical courses and deliver developer training.

Senior Android Developer

Lexware • Fulltime

Dec 2023 - Jun 2024 • 6 mos

Worked on lexoffice’s Android apps, including the main app, scan app and ID app. My work covered features, bug fixes, test infrastructure and build tooling. I developed the Compose-first ID app and migrated Gradle build logic from Groovy to Kotlin, alongside collaboration on engineering quality and delivery.