Yurii Babii
Yurii Babii

Yurii Babii

Lead Android Engineer

8+ years shipping reliable, user-centric mobile products — and building the teams and processes behind them.

Nice, France · Open to Remote (France / Global)

Email me LinkedIn Download CV

By the numbers

0
experience
12M+
bets handled
0
bets/min · Super Bowl peak
2.5M
users
0
796 ratings

Selected work

Deep-dives into the problems, constraints, and outcomes that shaped my engineering practice.

DraftKings · Oct 2021–Present

Native Android at Super Bowl scale

12M+ bets · reliability & on-call · betting at peak throughput of ~59K bets/min

Read case study →
Epicentr K · Mar 2020–Mar 2021

Built the mobile department ground-up

Ukraine's largest retailer · ~75 hypermarkets · zero-to-one mobile org

Read case study →

Earlier: Trinetix, High Marks — cross-platform Xamarin development.

Projects

Independent products and side ventures.

Founder / Lead Developer · Mar 2022 – May 2023

UAdemy

Founded an EdTech startup and led a remote team of 6 through wartime constraints while maintaining steady delivery. Shipped a mobile product to 25K+ installs and a 4.9/5 rating from 796 reviews. Established coding guidelines, branching strategy, incident playbooks, CI/CD, and release process from scratch.

Read case study →

View on the App Store →

Released on the App Store (iOS) · Kotlin Multiplatform (KMP)

Opora — self-help for anxiety and stress

A Ukrainian-language iOS self-help app for anxiety and stress: one-tap SOS resources, breathing and grounding exercises, a daily check-in, a journal, and sleep and stress checks. Works offline, with no account and no tracking. Built with Kotlin Multiplatform and Compose Multiplatform, with shared code for Android and iOS.

View on the App Store →

Side project · MVP shipped

TomorrowPack — reusable packaging

Flutter / Dart · built the MVP end to end for a reusable-packaging startup.

Experience

Oct 2021 – Present
Senior Software Engineer
DraftKings
Native Android reliability at scale — Super Bowl peaks, on-call ownership, and betting infrastructure serving millions of users.
Jul 2020 – Mar 2021
Head of Mobile Application Development
Epicentr K
Built and led the mobile department from scratch at Ukraine's largest retailer (~75 hypermarkets).
Mar 2020 – Jul 2020
Lead Xamarin Developer
Epicentr K
Laid technical foundations for the cross-platform retail app before moving into the department-lead role.
May 2017 – Mar 2020
Senior Xamarin Developer
Trinetix
Cross-platform mobile development across multiple client products in finance, health, and enterprise.
Jan 2017 – May 2017
Xamarin Developer
High Marks
First professional role — cross-platform iOS/Android development with Xamarin.

Skills

Android
Kotlin Kotlin Multiplatform (KMP) Compose Multiplatform Jetpack Compose Coroutines/Flows MVVM Redux Hilt/Dagger SQL REST WebSockets JUnit Perfetto
CI/CD & Observability
Firebase Crashlytics New Relic Azure AppCenter Play Console App Store Connect TestFlight
AI
Codex Claude Code ChatGPT Mistral
Cross-platform
C# .NET Flutter Dart Xamarin Forms Xamarin iOS Xamarin Android Supabase Figma

About

I build Android products I'm genuinely proud of — reliable, thoughtful, and built to last under real pressure. Eight years in, what drives me most is still the craft: clean architecture, systems that scale, and teams that grow. Outside the editor, I'm just as deliberate about how I spend my energy.

  • Proud half-Husky owner — daily reminder that patience and persistence pay off.
  • Training for my first half-marathon using WHOOP and structured health protocols.
  • Yoga and spiritual practice — both keep me grounded when complexity spikes.
  • Calendars, notes, and task lists are a genuine joy — organization is a form of creative thinking.
  • Exploring electronic music production — a different kind of system design.

Get in touch

Open to senior and lead Android roles, remote or Nice-based. Happy to talk.

Best way to reach me is email. I aim to reply within one business day.

yurii.babii.work@gmail.com LinkedIn Download CV

Languages

English
Full Professional
French
Basic
Ukrainian
Native

Certifications

  • Jetpack Compose Masterclass — Philipp Lackner

Education

  • BSc Computer Software Engineering
    Lviv Polytechnic National University · 2016–2019
  • Associate's Computer Engineering
    Khmelnitsky Polytechnic College · 2012–2016