Mikita Haurylovich

Senior / Lead iOS engineer · Warsaw · remote

I build iOS apps that millions of people use every day.

I'm Mikita Haurylovich, a senior and lead iOS engineer in Warsaw with 12 years of experience. I've built consumer and fintech apps with up to 2 million daily users and own features end to end, from the API contract to the rollout. Lately I've also started an independent path: apps of my own for iOS and Android, with AI agents as my engineering team.

Work with me hire@haurylovich.com

12 years
of iOS, consumer apps and fintech
2M
daily users in the apps I've worked on
Lead
the technical plan with product and backend, code quality, hiring

Apps I've worked on

Products of other companies, where I built and led iOS work.

  • MyFitnessPal

    Calorie counter and nutrition tracker

    Senior, then Lead iOS engineer · 2M daily users

  • Kleinanzeigen

    Germany's leading classifieds marketplace

    Senior iOS engineer, contract · 1M daily users

  • ADAC Kreditkarte

    Credit card and banking app

    Senior iOS engineer, contract · 3‑D Secure, WCAG 2.1 AA

  • Express

    Fashion retail app of a major U.S. brand

    iOS engineer, contract · Listings and cart

  • Vestel Smart Life

    Smart home app for Vestel appliances and TVs, formerly Evin Aklı

    Senior iOS engineer · iF Design Award

What I do

iOS first; Android and Kotlin Multiplatform when a product needs both.

Marketplaces, banking, health and fitness, smart home, secure messaging, retail and education.

The full stack and how I take on work: hire me.

Apps used by millions
I build and ship features in apps with up to 2 million daily users, and roll them out safely with feature flags and A/B tests. At MyFitnessPal I owned the whole A/B testing setup.
Half the crashes
I track down production crashes: threading, memory, broken UI. At MyFitnessPal I cut crashes in half, from a 99.2% to a 99.6% crash‑free rate.
Leading
I set the technical plan together with product and backend, own the quality of the team's code and help hire and grow iOS engineers.
AI‑assisted engineering
AI agents are part of my production work: faster crash triage, generated tests, safer refactors. My own app, Flopline, is built end to end this way.

My own apps

My independent path, just starting: apps I design, build and ship myself, each from one Kotlin Multiplatform codebase for iOS, Android and the desktop.

Flopline

Flopline is a fast, precise poker equity calculator for studying hands and reviewing spots.

Status · 2 Nov 2026

Flopline for Mac is out: exact Hold'em and Omaha equity with every tool included, free to download from flopline.com. The iPhone and iPad app is getting ready for the App Store; Android follows after it.

flopline.com

Shoveline

Shoveline is an ICM calculator and push/fold solver for tournament poker.

Status · 3 Nov 2026

It solves spots for 2 to 10 players with antes, offline and on the device, and is in testing on iPhone now; Android, the desktop and the web follow.

Contact

Contract iOS work: hire@haurylovich.com