Hi, I'm Valery

I build iOS that feels instant

Senior iOS Engineer with 6+ years building high-performance products. Swift, Realtime, Graphics and FinTech.

View selected work Get in touch →

Six years shipping across

Korpu PST Toranotec · Tokyo Nerve.AI
Impact

Numbers that shipped to production

0K+
Monthly active users on a fintech app built from scratch
0%
Crash-free users in production
+0–40%
SwiftUI rendering performance gained
0s→4s
App startup time, cut in half
Experience

Where I've built

Consumer and FinTech products where performance and realtime behaviour were the product, not a detail.

JAN 2026 — PRESENT
Korpu
Senior iOS Engineer · Remote
3D avatars & realtime social
A social networking platform for realtime communication and short-form content, for the Azerbaijan market.
  • Built a 3D avatar platform from scratch with SceneKit, RealityKit and Metal — stable 60 FPS.
  • Rebuilt core parts of the social platform — chat, stories and calls — strengthening UX consistency and scalability.
  • Shipped audio/video calling infrastructure on LiveKit, CallKit and WebSockets with low-latency stability.
  • Built the posts & reels flow — camera and photo library capture, media processing, and smooth vertical video playback in a feed (AVFoundation, PhotoKit).
  • Migrated networking to Swift Concurrency & async/await, simplifying asynchronous code.
  • Cut app startup time 8s → 4s through rendering and concurrency optimizations.
SwiftUIUIKitRedux (Flux)SceneKitRealityKitMetalLiveKitCallKitAVFoundationPhotoKit
APR 2024 — OCT 2025
PST
Senior iOS Engineer · Team Lead · Remote
Fintech banking, from zero
A FinTech startup building virtual cards, crypto top-ups and digital banking infrastructure.
  • Built the banking app from scratch — 100K+ MAU and ~18K daily transactions, supporting rapid product growth.
  • Achieved 99.98% crash-free users and reduced startup to under 3s through performance work.
  • Established engineering standards — Clean Architecture, CI/CD and testing — streamlining delivery and maintainability.
  • Led a mobile team of 3 while staying hands-on in development, improving release consistency.
SwiftUIClean ArchitectureCI/CDFastlane
MAY 2022 — APR 2024
Toranotec
iOS Engineer · Tokyo, Japan
Wealth & investment products
A Japanese FinTech and wealth-management company developing mobile investment products, including an app for clients of Mitsubishi UFJ (MUFG).
  • Contributed to Aruitoku! for MUFG — winner of the Japan Financial Innovation Award 2024 (Collaboration Award), and the first app in Japan to use a major bank's own service ID for step-based micro-investing.
  • Increased SwiftUI rendering performance by 30–40%, reducing bottlenecks and UI latency.
  • Developed reusable SwiftUI components and modular architecture, accelerating feature delivery across projects.
  • Contributed to a scalable module architecture with SwiftUI, Combine and MVVM, simplifying parallel development.
SwiftUICombineMVVMModular Architecture
MAR 2019 — MAY 2022
Nerve.AI
iOS Engineer · Moscow
Consumer & e-commerce at scale
A software company building consumer and e-commerce mobile applications.
  • Refactored an e-commerce app with 300K+ DAU, improving runtime performance and scalability.
  • Built an iOS app from scratch as the sole iOS engineer, owning end-to-end delivery for ~50K monthly users.
Objective-CUIKitVIPERStoreKitCI/CD
Deep dives

Engineering, in the open

Long-form breakdowns of the engineering decisions behind the products I've shipped.

PST · Fintech · Architecture

Building a fintech bank's iOS architecture from zero

A complex banking product where I designed the iOS architecture end-to-end, on my own — from an empty Xcode project to a clean, testable, scalable foundation the whole team could build on.

Clean ArchitectureSwiftUIDependency InjectionNavigation
Read the full breakdown on LinkedIn →
Swift · Architecture · Concurrency

Beyond MVVM: unidirectional data flow in Swift

Told through a chat app — one WebSocket message that the conversation list, the open chat and the tab badge all need. Why MVVM has no single source of truth, and how unidirectional flow (one store, pure reducers, state in an actor) removes the state drift and async races MVVM leaves on the table.

UnidirectionalReducersActorsSwift Concurrency
Read the full breakdown on LinkedIn →
Selected work

Things I build for the love of it

A living collection — new experiments land here as I ship them.

SwiftMetalGPUComputePerformance

Cosmic Dust

An interactive nebula of up to a million GPU particles — and a set of measured before/after case studies in making Metal fast on Apple silicon. One instanced draw carries 500,000 particles at 60 FPS; the naive one-draw-call-per-particle version hits a wall at 20,000.

Every naive version ships inside the app behind a live toggle — flip it, watch the frame time change on the HUD, reproduce every number on your own phone. The case studies are the product; the app is the evidence.

View on GitHub →
SwiftMetalSwiftUIAVAudioEngine

Metal Audio Visualizer

Real-time, GPU-driven audio visualizer for iOS. Four isolated stems play in sample-perfect sync while a single Metal shader renders a living, reactive scene — a pulsing core with 120 rotating spikes, each responding to a stem's energy at 60 FPS.

Tap Sound on to hear the stems drive the visuals.

View on GitHub →
SwiftMetalSwiftUIGPUPhysics

SunFlares

A real-time Sun, rendered on an iPhone with SwiftUI and Metal — every pixel is math, recomputed 60 times a second. 16,384 GPU particles simulate the boiling convection, and eruptions fire from real solar-flare statistics, with the whole scene running at 10,000× real time.

Born from a space-weather course at Skolkovo — physics I studied, then finally built.

View on GitHub → Read the write-up →
SwiftRealityKitSwiftUIUSDZFlux

Avatar Companion

A 3D companion for a fitness app — a low-poly character who reacts to how you're doing: he sits down when you're tired and lies down when your energy runs low. Built with SwiftUI and RealityKit at a stable 60 FPS, where mood drives the animation, the way he settles into it, and the colour of the whole scene.

Getting here meant migrating off SceneKit onto RealityKit — it couldn't even read the animations inside its own asset format.

View on GitHub →
About

Engineer by day, musician after dark

Portrait of Valery Nevzorov Valery Nevzorov

For 6+ years I've specialized in high-performance, realtime mobile systems — from fintech platforms to 3D rendering and communication infrastructure. Performance optimization, scalable architecture and realtime systems are where I operate best, and where I've consistently delivered results that matter.

I care about products that are visually rich and technically challenging — where the hard part is invisible and the result just feels right. That's the same instinct that pulls me to music: I write my own songs and play piano, guitar and drums.

Now I'm ready for something bigger — a team and a product where that experience makes real impact at scale.

Core stack
SwiftSwiftUIUIKitMetalRealityKitSceneKitSwift ConcurrencyCombine
Craft
Clean ArchitectureModularRealtimeCI/CDWebSocketsPerformanceTech leadership
AI-assisted dev
Agent skillsCustom workflowsCode review & testsAutomation hooksMCP · Figma
Languages
Russian — NativeEnglish — C1Spanish — A2
Off the clock

The other half of the craft.

I write and record my own music. The discipline is the same as engineering — structure, timing, and a feel you keep refining.

PianoGuitarDrums
Contact

Let's build something
worth shipping

Open to Senior iOS roles — native mobile, realtime/fintech, performance-critical systems. Relocation and remote welcome.

masterpiece.nevzorov@gmail.com
LinkedIn ↗ GitHub ↗ Telegram ↗