Carl S.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

High quality software developer. Over 20 years experience designing and developing Business Management solutions across a broad range of businesses globally, I'm here to help make your company shine and your life easier through software solutions. I have worked in-house and also led a team of developers for a software engineering company before starting freelancing 9 years ago. I can and will deliver great results with a process that's timely, collaborative and of great value to you. Experience / Qualifications: Full time FileMaker Developer since 2001 also producing native iOS and Android apps in Objective-C, Swift, SwiftUI, Java, .net, Web integration, and integration with other services also using PHP, the Data API, or curl. And the occasional embedded firmware with C. I have a Bachelor of Computer Science with a double major in computer science. I am a Claris Partner (formerly FileMaker Business Alliance Member) and can resell FileMaker licenses at a discount and also offer premium FileMaker Server hosting with 24x7 monitoring, offsite backups, and full administration rights to the user. Integrations previously performed with - WooCommerce / Wordpress - FedEX / DHL - Many GPS tracking platforms and GPS tracking hardware - ArcGIS - Google services ( email, calendar, maps ) - HERE Maps API. Navigation edition. Created a turn by turn navigation app in Swift and a routing website using the Javascript API - Paypal - Square - Xero - Create custom REST API's and gateways to FileMaker Server