Kostyantyn K.

👋 My team builds iOS and Android apps for fleet management, logistics, navigation/mapping, social media, AR, marketplace, healthcare and others. On Upwork I've held 60+ contracts and 8,000+ hours at 100% Job Success, with a 5.0 rating across 45+ reviews. Our average engagement runs longer than 3 months, and a lot of them have run for years (clients tend to keep us rather than replace us). 𝐂𝐋𝐈𝐄𝐍𝐓𝐒 𝐖𝐄'𝐕𝐄 𝐁𝐔𝐈𝐋𝐓 𝐅𝐎𝐑 - Rand McNally - navigation and fleet telematics - HORMANN Intralogistics - industrial logistics systems - Magna International - automotive software and mobility solutions - DOLBY - audio, video, and entertainment technologies - Sharpen Technologies - cloud contact center platform 𝐖𝐇𝐄𝐑𝐄 𝐎𝐔𝐑 𝐃𝐄𝐏𝐓𝐇 𝐈𝐒 𝐔𝐍𝐔𝐒𝐔𝐀𝐋 Most mobile teams can build a screen that shows a map. Fewer can keep tracking accurate when a driver loses signal inside a warehouse, keep the battery alive through a 10-hour shift, or reconcile offline data cleanly when the device reconnects. That's the work we've spent a decade on. - Fleet management, telematics, and driver-facing apps - Turn-by-turn navigation and route optimization (Mapbox, Google Maps, HERE Maps) - GIS, indoor mapping, and indoor navigation - Background location tracking and offline-first sync - Augmented reality: ARKit, ARCore, RoomPlan, LiDAR, SceneKit We also work in healthcare, marketplace, and social products, and the wider Volpis team covers web development, UX/UI design, QA, and business analysis when a project needs them. 𝐖𝐇𝐀𝐓 𝐌𝐘 𝐓𝐄𝐀𝐌 𝐖𝐎𝐑𝐊𝐒 𝐖𝐈𝐓𝐇 - iOS: Swift, SwiftUI, Objective-C - Android: Kotlin, Jetpack Compose, Java - Cross-platform: Flutter, Kotlin Multiplatform - Back-end: Node.js, Nest.js, Express, Firebase, MongoDB, REST APIs - Integrations: Stripe, Payfort, Twilio, Mapbox, Google Maps API - Monitoring: Crashlytics, Firebase Analytics, Mixpanel, New Relic 𝐖𝐇𝐀𝐓 𝐘𝐎𝐔 𝐆𝐄𝐓 𝐁𝐘 𝐃𝐄𝐀𝐋𝐈𝐍𝐆 𝐖𝐈𝐓𝐇 𝐌𝐄 𝐃𝐈𝐑𝐄𝐂𝐓𝐋𝐘 - A real scope and a real timeline, not the one that wins the bid - I'll tell you when a feature isn't worth building - 50+ engineers, designers, and QA behind that conversation 𝐖𝐇𝐀𝐓 𝐈'𝐋𝐋 𝐍𝐄𝐄𝐃 𝐅𝐑𝐎𝐌 𝐘𝐎𝐔 The problem you're solving and who it's for. If you have designs, a repo, or a competitor you're benchmarking against, send those too. I'll come back with an honest scope and timeline before you commit to anything. Message me or click "Invite to Job" and tell me what you're building!