RP

Lead iOS Engineer · AI-native development

Ruslan Popesku

Nearly 10 years shipping iOS products — from solo apps on the App Store to technical leadership on a 600M+ user streaming platform. I use AI coding agents daily and build the tooling that keeps their output production-grade.

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Ruslan Popesku

Lviv, Ukraine · Remote

≈10years building and shipping iOS products
600M+users on a platform led at team level
60%legacy build-time reduction delivered
850+assertions behind open-source AI skills

01 / Selected work

Products people use. Tools engineers can verify.

A focused selection from shipped App Store products and public engineering work.

01 · Indie productLive on App Store

Compresso: Shrink Video Photo

Privacy-first photo and video compression for iPhone. It helps people reclaim storage without choosing which memories to delete; all media processing stays on-device. Architected with iOS Agent Skills and ranked across 37 storefronts via iOS ASO Copilot.

SwiftSwiftUIPhotosHEIC / HEVC34+ languages
View on the App Store ↗
02 · Indie productLive on App Store

Hush: White Noise & Sleep Aid

A focused sleep and relaxation app with 30 mixable ambient sounds, background playback, lock-screen controls, and a smart fade-out timer. Shipped solo using iOS Agent Skills; multi-country ASO hypotheses managed via iOS ASO Copilot.

SwiftSwiftUIAVFoundationStoreKit49 languages
View on the App Store ↗
Open source · MIT

iOS Agent Skills

11 production-tested skills for Claude Code, Codex, and 40+ AI tools — benchmarked across 260+ scenarios with 850+ assertions. The engineering foundation used to ship Compresso & Hush.

Explore the repository ↗
Open source · ASO

iOS ASO Copilot

Agent-native toolkit for App Store keyword research, 25+ storefront rank audits, and hypothesis ledgers. Powers live growth and 77+ tracked hypotheses for Compresso & Hush.

Explore the repository ↗
Open source · On-device AI

Offline AI/ML Playground

A SwiftUI testbed for comparing open-source language models directly on iPhone with MLX Swift and no network dependency after download.

Explore the repository ↗

02 / Experience

From hands-on iOS delivery to technical leadership.

Senior iOS Engineer → Lead iOS Engineer

EPAM Systems

  • Disney+ Hotstar: Technical Team Lead on a 600M+ active-user streaming platform with 200+ engineers; delivered features with 75% unit-test and 100% UI-automation coverage.
  • Thomson Reuters: Senior iOS Engineer on a news product serving 2M+ active users.
  • Planoly: Senior iOS Engineer on a social-media planning product with 50,000+ subscribers.

iOS Engineer · Contract

Nullgravity

  • Built an AR retail experience for a leading building-materials retailer and cut legacy build time by 60% — roughly 20 minutes saved per iOS developer each day.
  • Handled high-conflict integration work across a 12-developer codebase.

iOS Engineer

Yalantis

  • Supported the shipped Grow Fit retail app, built a location-based game for US college students, and delivered a complex bug-tracking integration.

iOS Engineer · Contract

Planexta

  • Built SenceHub, a Bluetooth health-device app, from scratch — including long-running background work and high-frequency real-time charting over large data streams.

iOS Engineer · Contract

D-studio

  • Took a fan-community app for a pop artist from concept through App Store release.

03 / Expertise

A mobile foundation with an AI-native edge.

iOS engineering

Swift, SwiftUI, UIKit, Core Data, Combine, AVFoundation, REST, Alamofire, Vapor, Firebase, Crashlytics, Sentry, Adapty.

Architecture & quality

MVVM, VIPER, Clean Swift, TCA, Swift Concurrency, XCTest, TDD, UI automation, accessibility, localization, GitHub Actions CI/CD.

AI engineering

Claude Code, Codex, agent-skill authoring and benchmarking, SpecKit, BMAD, MCP, context engineering, prompt engineering.

Technical Cybernetics

Dnipropetrovsk National University of Railway Transport · English C1

Let’s build something that ships.

ruslanpopesku95@gmail.comLinkedIn ↗GitHub ↗