Oleg Marchik

Mobile engineer · Limassol, Cyprus

I can build, improve, and scale mobile products.

Mobile systems, engineering teams, subscriptions, and AI-assisted development — shaped by 20 years in software and 13 years in mobile.

Oleg Marchik on a terrace above the Meteora valley in Greece

About

I’m a product-minded mobile engineer and a hands-on technical leader. I still write code every week, and I care as much about why a feature exists as about how it is built.

Most of my work sits where architecture meets the product: a codebase that stays easy to change, releases that don’t keep anyone up at night, subscription flows that are correct and honest, and engineering habits that let a team ship calmly.

I use AI the way I use a profiler or a debugger — as a practical tool. It helps me research unfamiliar systems, write and review code, and automate the parts of engineering that shouldn’t need a person.

  • 20 yearsin software development
  • 13 yearsin iOS and mobile engineering
  • 1M+monthly app units on a flagship product
  • 99.99%crash-free sessions
  • Dozensof production mobile apps shipped
  • Hands-onleadership and mentoring of iOS engineers

Work

Where I can help

  • Mobile architecture and codebase audits
  • iOS performance, stability, and scalability
  • Subscription architecture and monetization flows
  • Technical strategy for new and existing mobile products
  • CI/CD, release processes, and engineering automation
  • iOS hiring interviews and candidate assessment
  • Team practices, mentoring, and technical leadership
  • AI-assisted development workflows for mobile teams
  • LLM tooling, structured prompts, and developer automation

iOS apps I’ve built

  • Smart TV Remote Control Apps
  • IPTV Streaming
  • AI-Powered Keyboard
  • Generative AI Chat
  • Instagram Analytics Apps
  • Charging Animation & Generator Apps
  • Live Wallpapers & Builder
  • AI-Powered Dream Interpretation App
  • Book Summarization App
  • Gallery Cleaner & Video Compressor
  • Mobile Fax App
  • Keyboard Themes
  • Music Player

Featured project · Smart TV Emulator

Build and test a TV remote app without a single television.

A test bench that behaves like a real Smart TV, allowing remote-control apps and coding agents to discover, pair with, control, and verify television integrations without physical hardware.

  • Captured, not imagined. Replays behaviour recorded from physical televisions rather than written from a spec.
  • Real network protocols. Discovery, pairing and control over the same protocols the TVs speak on your LAN.
  • Made for automation. A management API, exportable event log and MCP support for CI and coding agents.
View on GitHub

Away from software

Away from software, I build LEGO with my son. Together we have explored every LEGO Mindstorms and Boost set, and discovered that the LEGO Passport is a universe of its own. I also run a small BrickLink store and enjoy anime.

Contact

Consulting, a codebase audit, help with hiring iOS engineers, a role worth talking about, or just a good question — write to me. I read every message and usually reply within a few days.