May 2022 – Jul 2026 · Tashkent

Built the Android client for a verifiable-credentials digital identity product in Kotlin and Jetpack Compose across a multi-module codebase, with credential data encrypted at rest via SQLCipher, delivered on an internal SDK also offered to third-party integrators.
Developed the native Android video player for a video-on-demand platform using ExoPlayer, implementing offline downloads and picture-in-picture support.
Reduced logged production issues by ~90% on a Flutter ticketing application, triaging crashes, errors, and non-critical warnings to eliminate recurring failures.
Owned Google Play Console releases on 2–3 week cycles and resolved production incidents, including recovering data integrity after a faulty migration reached release.
Worked across cross-functional teams of 8–10 spanning Android, iOS, backend, and QA.
Certified as an internal technical interviewer; conducted 13 candidate interviews and mentored 4 Android interns.

Sep 2021 – Apr 2022 · Tashkent

Developed an Android companion application for a Bluetooth LE GPS tracking device in Kotlin with Hilt and Room, covering device pairing, data synchronisation, and notifications.
Delivered features and custom UI components for an outdoor navigation and mapping application in Kotlin with XML Views, improving maintainability of a legacy codebase through code review and refactoring.

Feb 2016 – Aug 2021 · Self-employed

Upwork profile Top Rated 4.8/5 · 42 reviews 65 engagements 3,600+ billed hours

Built Android, iOS, and cross-platform applications for international clients across the full delivery cycle, from requirements through store release and maintenance.
Integrated a cryptographic key-management library into Android and iOS applications by building Kotlin, Swift, and C++ interoperability layers.
Adapted in-house C++ machine-learning components for Android and iOS in an AI-powered communication-coaching application, and implemented in-app subscriptions on both platforms.
Designed heuristic algorithms over accelerometer, gyroscope, and GPS data to detect and score driving events for a B2B driving-safety product.

Bakhtiyor Khodjaev

Technical Skills