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I'm a mobile app developer with 10+ years of experience delivering high-quality Android and iOS applications. I specialize in scalable, user-centric experiences and have recently integrated AI technologies like Midjourney and TensorFlow into real-time mobile workflows. With a DevOps mindset, backend knowledge, and a passion for innovation, I thrive at the intersection of mobile and machine learning—building fast, reliable, and future-ready apps that balance performance with reliability.…I'm a mobile app developer with 10+ years of experience delivering high-quality Android and iOS applications. I specialize in scalable, user-centric experiences and have recently integrated AI technologies like Midjourney and TensorFlow into real-time mobile workflows. With a DevOps mindset, backend knowledge, and a passion for innovation, I thrive at the intersection of mobile and machine learning—building fast, reliable, and future-ready apps that balance performance with reliability.

Alex Sheiko

App Developer, Web Developer, Programmer, +3

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I'm a mobile app developer with 10+ years of experience delivering high-quality Android and iOS applications. I specialize in scalable, user-centric experiences and have recently integrated AI technologies like Midjourney and TensorFlow into real-time mobile workflows. With a DevOps mindset, backend knowledge, and a passion for innovation, I thrive at the intersection of mobile and machine learning—building fast, reliable, and future-ready apps that balance performance with reliability.…I'm a mobile app developer with 10+ years of experience delivering high-quality Android and iOS applications. I specialize in scalable, user-centric experiences and have recently integrated AI technologies like Midjourney and TensorFlow into real-time mobile workflows. With a DevOps mindset, backend knowledge, and a passion for innovation, I thrive at the intersection of mobile and machine learning—building fast, reliable, and future-ready apps that balance performance with reliability.

Available to hire

I’m a mobile app developer with 10+ years of experience delivering high-quality Android and iOS applications. I specialize in scalable, user-centric experiences and have recently integrated AI technologies like Midjourney and TensorFlow into real-time mobile workflows.

With a DevOps mindset, backend knowledge, and a passion for innovation, I thrive at the intersection of mobile and machine learning—building fast, reliable, and future-ready apps that balance performance with reliability.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

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Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Ukrainian

Fluent

Russian

Fluent

Polish

Intermediate

Work Experience

Fintech Application Developer at HitPay Payment Solutions Pte Ltd

January 1, 2024 - April 1, 2025

Developed and maintained native iOS and Android applications for HitPay’s payment platform. Integrated Stripe and local payment gateways using secure and efficient native modules. Automated release pipelines with Fastlane and improved build times with optimized Gradle/Xcode settings. Resulted in a 20% increase in user retention, a 40% reduction in manual testing time, and a 25% reduction in crash rates.

AI Software Engineer at Dreamboards LLC

February 1, 2022 - December 1, 2023

Developed a cross-platform mobile app using Flutter that enables users to generate and manage AI-generated images based on prompts. Integrated the Midjourney API and Runpod-hosted models for real-time image generation. Led API integration for the AI shot maker frontend, delivering a production-ready app with responsive UI and reliable backend interactions.

Mobile Software Engineer at AT&T Services, Inc.

June 1, 2020 - February 1, 2022

Contributed to the development of internal tools used for device diagnostics and maintained high-performance Android applications. Improved the efficiency of internal device testing and streamlined app-device workflows, reducing testing cycle time.

Mobile App Developer at DPD Deutschland GmbH

January 1, 2019 - May 1, 2020

Developed and maintained the DPD customer-facing mobile application, implementing real-time tracking, delivery scheduling, and push notifications. Contributed to code reviews and introduced coding best practices to the team, resulting in improved functionality, stability, and monthly active users.

Senior Mobile Developer at Threshold Brands LLC

May 1, 2025 - December 1, 2025

Enhanced iOS and Android applications for MaidPro's on-demand cleaning service marketplace. Built and optimized booking workflows and push notification systems. Integrated third-party APIs including Google Maps for geolocation, Stripe for payments, and Firebase for real-time data synchronization. Generated measurable results: 45% reduction in load times through efficient state management and caching; improved payment flows and scheduling; implemented automated testing frameworks increasing code reliability by 40%.