Open to Lead / Staff iOS rolesiOS Team Lead · B2Broker · Belgrade

I build iOS apps that move at market speed.

Twelve years of Swift. Today I lead the iOS team behind B2Trader, a real-time trading platform.

12+: Years in iOS
4+: Years leading
40+: Engineers supported
3,000+: Live instruments (B2Trader)

Twelve years in iOS — from automotive and EVs to fintech and real-time trading. The move never changes: find the part of the codebase nobody wants to touch, and make it something the team is proud of.

Maxim · Belgrade

Code

Swift
SwiftUI
UIKit
Modular Architecture
MVVM

People

Hiring loops
1:1s & growth plans
Review culture
Architecture reviews
AI-assisted workflow

Occasional mentoring ↗

Work

01 / 04

Feb 2024 — PresentBelgrade, Serbia

B2Broker

Senior iOS Engineer → iOS Team Lead

2+ years in role

Joined to build trading components. Five months later I was running the team.

Designed a SwiftUI architecture for real-time market-data streaming across 3,000+ instruments, optimizing diffing, state updates, and rendering under sub-second latency constraints.
Shipped real-time order book + market data streaming under tight latency budgets.
Drove cross-functional iOS architecture decisions across mobile, backend, QA, and product for latency-sensitive trading flows.

SwiftSwiftUICombineTrading APIsClean ArchitectureTechnical Leadership

B2Trader — Markets screen with live crypto pairs and 24h price change

B2Trader — Trading view with real-time order book and buy/sell panel

Platform volume: $700B+
Platform accounts: 3.5M+
Instruments live: 3,000+

May 2023 — Feb 2024Belgrade · 9 mo

Charge Cars

Senior iOS Engineer

Sole iOS engineer on the project: built the entire companion app for an electric sports car inspired by the 1967 Mustang Fastback.

Remote control: locking/unlocking, climate pre-conditioning, real-time charging status.
Secure REST + BLE communication with the vehicle's onboard systems.
GPS-backed find-my-car and trip monitoring, resilient to spotty connectivity.

SwiftSwiftUIBLERESTGPSAutomotive

Charge Cars electric Mustang — '67 Fastback, side view — Charge Mustang — '67 Fastback, reborn electric.

Charge Cars iOS app — vehicle status home — Charge Mustang — '67 Fastback, reborn electric.

Jan 2019 — May 2023Saint Petersburg → Belgrade · 4 yr 4 mo

Arrival

iOS Engineer → Senior Software Engineer

Four years of iOS for purpose-built electric vans, manufactured in low-footprint microfactories.

Migrated client–server from REST to Apollo GraphQL with generated, type-safe contracts.
Built live telemetry pipelines (Combine + Protobuf) for battery, location, and accelerometer streams.
Modularised the codebase into 12+ Swift packages so feature teams could ship independently.

SwiftSwiftUICombineApollo GraphQLProtobufBLE / Core BluetoothNFCXCTest

Arrival electric van, side view — Arrival Van — a purpose-built electric LCV.

Arrival app — Driver home — Arrival Van — a purpose-built electric LCV.

May 2017 — Jan 2019Saint Petersburg · 1 yr 8 mo

Cryptopay

iOS Developer → Senior iOS Engineer

Joined to ship features on a crypto wallet. Stayed to lead the team and rewrite it in Swift.

Pulled crash-free sessions above 96% — was hovering in the low 80s when I joined.
Shipped iPad and Apple Watch versions of the app alongside the main iPhone build.
Migrated 70% of the Objective-C codebase to Swift without a feature freeze.

SwiftObjective-CwatchOSiPadOS

80% → 96%

Crash-free sessions, over 18 months.

Earlier

Aug 2016 — May 2017
EmbriaiOS Developer
Note
Built features on OlympTrade — a retail trading and investment platform with millions of users. First big task: a full UIKit redesign delivered in two months. Then a seasonal mini-game (SpriteKit + CoreAnimation) built around the Christmas cycle that pushed retention past 20%. First real lesson in consumer fintech: crash budgets, App Store review pressure, and users who notice every dropped frame.
May 2014 — Aug 2016
Game InsightiOS Developer
Note
Two years at one of Russia's larger mobile game studios, shipping cocos2d-based titles. Most of the work lived at the rendering layer — writing shaders, optimising draw calls on constrained hardware, and making animations feel smooth on the device range of 2014–2016. Also integrated a stack of third-party SDKs (analytics, ads, social) and worked closely with QA to hit game-designer specs to the pixel.
Sep 2013 — May 2014
Murmansk State Technical UniversitySystem Administration Specialist
Note
Started here while still a student — maintaining the university's computer network, diagnosing hardware failures, and setting up workstations for labs and staff. Unglamorous work, but it taught me how systems actually fail: that every timeout has a physical cause somewhere, and that patience with a terminal window is a transferable skill.

Projects

Small macOS apps and developer tools built outside work — some on the Mac App Store, some on GitHub.

uNotch

The MacBook notch, put to work

Click the notch and it opens into a row of widgets you pick yourself — today's meetings with one-click Join for Zoom, Meet and Teams, CPU and battery readouts, clipboard history, folder shortcuts.

macOS 14+

Mac App Store ↗Details ↗

uChecker

Proofreading that never leaves your Mac

A menu-bar panel on a global hotkey: fixes spelling, grammar and phrasing, then lists exactly what changed. Runs on-device by default — your text never leaves the Mac.

macOS 14+

Mac App Store ↗Details ↗