Александр Вахтин

Senior Android Developer • Разработчик мобильных приложений • Старший (Senior)

От 350 000 ₽ • Ищу работу

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Возраст: 30 лет

Опыт работы: 9 лет и 3 месяца

Регистрация: 20.05.2018

Последний визит: 1 месяц назад

Гражданство:

Местоположение: Россия, Санкт-Петербург

Дополнительно: готов к удаленной работе

Рекомендательные письма

Друзья

Обо мне

Senior Android / KMP Engineer with 8+ years of experience, including 5 years in international Agile teams. Delivered significant business value, including a 75% increase in user conversion for a major fintech platform.

Expert in modern architecture, specializing in KMP and Jetpack Compose. Focus on creating scalable, bug-free products (reduced technical debt from 120 to 0 bugs) while early adopter of AI tools (Cursor, Claude, Copilot), using them to automate boilerplate and speed up feature delivery without compromising code quality.

Experienced in technical leadership, having mentored teams of Middle and Junior developers. Based in Portugal (Resident) for 5+ years, fully adapted to global work standards and open to remote roles or relocation.

Навыки

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Разработка под Android

Разработка под iOS

Разработка мобильных приложений

Xamarin

Kotlin

iOS Human Interface Guidelines

Visual Studio

Android studio

Material Design

Опыт работы

Chatfuel
Крупнейшая платформа создания ботов для Facebook Messenger
Лиссабон • От 10 до 100 сотрудников
Разработчик мобильных приложений (Старший) • Senior Android, iOS - KMP Engineer
Июль 2024 — По настоящее время (1 год и 10 месяцев)
• End-to-End Product Launch: Solely designed and architected a cross-platform application from scratch for Android and iOS.

• Business Growth: Contributed to the development of Premium features that drove a 1100% MoM revenue increase for the WA product and sustained a high-revenue portfolio (reaching $270k+ total monthly revenue).

• Conversion Optimization: Implemented key features, including a Calendar system, which directly improved user engagement and trial-to-premium conversion rates.

• KMP Efficiency: Reduced development time and maintenance costs by implementing a shared business logic layer using Kotlin Multiplatform.

• Operational Excellence: Reduced Time-to-Market (TTM) by 40% for new features by designing and implementing a comprehensive Corporate UI Kit

• High-Performance UI: Engineered a fluid UI with Jetpack Compose, ensuring native-level responsiveness and performance.
Разработка под Android • Jetpack Compose • Kotlin Multiplatform • Разработка мобильных приложений • Android studio • Kotlin • Android SDK • MVVM • Coroutines • Room • Flow • Ktor • GraphQL • Apollo • WebSockets
AppClose
Разработчик мобильных приложений (Старший) • Senior Android Engineer
Июль 2021 — Июнь 2024 (3 года)
• High-Scale Product Impact: Key developer for a leading co-parenting platform with 1M+ downloads, maintaining a 99.9% crash-free rate and ensuring high stability for a large user base.

• Full App Redesign: Led the technical transition to a modern UI, implementing a robust design system that enhanced visual consistency and app performance.

• UX Optimization: Refactored core user flows to reduce navigation depth, significantly reducing friction in complex tasks, which led to improved user satisfaction and higher retention rates.

• Subscription & Monetization: Engineered and integrated a comprehensive subscription-based payment system, managing complex billing cycles and ensuring secure financial transactions.

• Architecture Migration: Spearheaded the migration of the legacy codebase to MVVM architecture, increasing developer velocity and enabling faster delivery of new features.

• Feature Engineering: Developed high-impact features including encrypted data backups and secure communication tools for sensitive user information.
Английский язык • Git • Kotlin • Coroutines • Dagger 2 • Room • Retrofit • Clean Architecture • Jetpack Compose • Android studio
Crypterium
Разработка мобильного банка с поддержкой криптофиатных операций
От 100 до 1000 сотрудников
Разработчик мобильных приложений (Старший) • Senior Android Developer
Ноябрь 2018 — Июль 2021 (2 года и 9 месяцев)
• Product Scale & Impact: Developed and maintained a flagship crypto-banking application with 500,000+ downloads, ensuring high performance and stability for a global user base.

• Product Stabilization: Eliminated technical debt by reducing the number of active bugs from 120 to 0. Achieved a bug-free production environment and significantly improved overall app reliability.

• Business Growth & Exceptional Impact: Designed and implemented a breakthrough "Market Predictions" feature. This led to a 75% increase in user conversion and drove significant revenue growth, becoming one of the platform's primary profit drivers.

• Mentorship & Leadership: Led a team of 5 developers (3 Middle, 2 Junior). Established Code Review standards and engineering best practices, fostering professional growth and accelerating feature delivery cycles.
Git • Английский язык • Kotlin • MVVM • Flow • RxJava 2
Wellsoft
IT-компания
Разработчик мобильных приложений (Старший) • Mobile Developer
Февраль 2017 — Октябрь 2018 (1 год и 9 месяцев)
• Department Launch: Took full responsibility for establishing the mobile development department from scratch, defining the initial tech stack, and setting up development workflows.

• Infrastructure Setup: Configured the CI/CD pipelines, version control standards, and project architecture (MVVM + Clean Architecture) for all upcoming mobile projects.

• End-to-End Delivery: Successfully led the development and launch of the company’s first 7+ Android applications, taking them from initial concept to the Google Play Store.

• Strategic Growth: Acted as the primary technical point of contact for mobile solutions, helping the company expand its service offerings to include mobile development
C# • Kotlin • MVVM • Разработка под Android • Разработка мобильных приложений

Высшее образование