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Senior Android engineer with seven years of experience building and stabilizing Kotlin applications for automotive and consumer products. Delivered features for apps serving 500,000+ users and led a Java-to-Kotlin rebuild that improved crash-free users from ~70% to 95% as the product surpassed 1M Google Play downloads. Experienced in end-to-end delivery, complex production debugging, offline-first synchronization, maintainable Android architecture, and cross-platform development with Kotlin Multiplatform and Compose. Also has backend experience with Kotlin/Spring Boot, REST APIs, WebSockets, and CI/CD for reliable releases.…Senior Android engineer with seven years of experience building and stabilizing Kotlin applications for automotive and consumer products. Delivered features for apps serving 500,000+ users and led a Java-to-Kotlin rebuild that improved crash-free users from ~70% to 95% as the product surpassed 1M Google Play downloads. Experienced in end-to-end delivery, complex production debugging, offline-first synchronization, maintainable Android architecture, and cross-platform development with Kotlin Multiplatform and Compose. Also has backend experience with Kotlin/Spring Boot, REST APIs, WebSockets, and CI/CD for reliable releases.

Soroush Lotfi

Software Engineer, App Developer, Back-End Developer, +2

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Senior Android engineer with seven years of experience building and stabilizing Kotlin applications for automotive and consumer products. Delivered features for apps serving 500,000+ users and led a Java-to-Kotlin rebuild that improved crash-free users from ~70% to 95% as the product surpassed 1M Google Play downloads. Experienced in end-to-end delivery, complex production debugging, offline-first synchronization, maintainable Android architecture, and cross-platform development with Kotlin Multiplatform and Compose. Also has backend experience with Kotlin/Spring Boot, REST APIs, WebSockets, and CI/CD for reliable releases.…Senior Android engineer with seven years of experience building and stabilizing Kotlin applications for automotive and consumer products. Delivered features for apps serving 500,000+ users and led a Java-to-Kotlin rebuild that improved crash-free users from ~70% to 95% as the product surpassed 1M Google Play downloads. Experienced in end-to-end delivery, complex production debugging, offline-first synchronization, maintainable Android architecture, and cross-platform development with Kotlin Multiplatform and Compose. Also has backend experience with Kotlin/Spring Boot, REST APIs, WebSockets, and CI/CD for reliable releases.

Available to hire

Senior Android engineer with seven years of experience building and stabilizing Kotlin applications for automotive and consumer products. Delivered features for apps serving 500,000+ users and led a Java-to-Kotlin rebuild that improved crash-free users from ~70% to 95% as the product surpassed 1M Google Play downloads.

Experienced in end-to-end delivery, complex production debugging, offline-first synchronization, maintainable Android architecture, and cross-platform development with Kotlin Multiplatform and Compose. Also has backend experience with Kotlin/Spring Boot, REST APIs, WebSockets, and CI/CD for reliable releases.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

German

Intermediate

Persian

Fluent

Work Experience

Android /KMP & Backend Developer at Independent Product | Categories

January 1, 2026 - Present

Owned end-to-end development of a real-time multiplayer product across Kotlin Multiplatform client, Compose Multiplatform UI, and Ktor backend. Implemented WebSocket-based matchmaking/gameplay, REST reconnection and state recovery, JWT authentication, and platform-specific payments using Kotlin expect/actual. Also built a GitHub Actions pipeline to build, sign, and publish tagged Android releases to Google Play beta/production tracks with automated release notes, including testing and release delivery.

Backend Developer at Pixida GmbH

February 1, 2025 - January 31, 2026

Contributed to a greenfield Kotlin/Spring Boot platform enabling mobile-initiated remote vehicle commands for MAN fleets. Developed backend services and REST APIs for remote-command workflows including request validation, error handling, API contracts, and recovery behavior. Collaborated with Android, backend, QA, product, and automotive teams to define contracts, resolve end-to-end integration issues, and prepare remote command features for release.

Android Developer at Pixida GmbH

May 1, 2023 - January 31, 2025

Developed and maintained features for BMW Motorrad Connected (500,000+ users) using Kotlin, MVVM, Coroutines, and Flow. Improved vehicle-data synchronization logic across online/offline states, multiple paired devices, and inconsistent vehicle conditions, reducing synchronization failures and related customer support tickets. Diagnosed and resolved production issues involving synchronization, data corruption, BLE connectivity, and device pairing using Firebase Crashlytics, application logs, QA reports, and real motorcycle testing.

Android Developer at Blacksquared GmbH

December 1, 2021 - February 28, 2023

Re-architected perks and rewards pagination flow in the Changers Fit app using lifecycle-aware state management to improve reliability across loading, refresh, error, empty, and pagination states. Introduced MVVM, Repository Pattern, and Coroutines/Flow across rewards, step-tracking, and white-label features for consistent state handling and fewer bugs. Supported build/release/production workflows across white-label variants, including Gradle product flavors, push notifications, releases, and issue resolution.

Android Developer at Phoenix

May 1, 2019 - October 31, 2021

Led a full rebuild of Membersgram from legacy Java to Kotlin, introducing MVVM, Repository Pattern, Coroutines, and custom UI using XML layouts. Designed and delivered core product flows including discovery, rewards, promotions, virtual coins, notifications, and analytics, contributing to surpassing 1M Google Play downloads. Improved crash-free users from ~70% to 95% by resolving stability issues and redesigning complex reward states for offline mode, server errors, empty states, Telegram API rate limits, success, and progression. Mentored a junior Android developer through code reviews and feature guidance.