PS
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Software engineershipping products people keep open.

I'm Priyanshu Singh · a product-minded software engineer who designs, builds, and ships end-to-end: mobile, backend, and the systems that hold them together. I care about clean architecture, thoughtful UX, and the quiet details that make software feel effortless.

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20+
Products shipped
1M+
Active users
4.9★
Highest App Store
700+
DSA problems solved
01About

I started building iOS apps because a single tap should feel effortless · and getting there is anything but.

My path into iOS started with a stubborn curiosity for why some apps feel alive and others feel like paperwork. I've spent the last three years chasing that difference · through Swift, SwiftUI, UIKit, and the quiet discipline of Swift Concurrency.

I care about scalable architectures the way a chef cares about mise en place: features move fast because the boundaries are right. MVVM, VIPER, Clean · each is a tool with a job, and I pick the one the domain deserves.

The best part of the job is a genuinely hard problem · a chat that has to survive flaky networks, a payment flow that has to be idempotent, an animation that has to hold 60fps on a three-year-old device. That's where the craft lives.

I read release notes for fun, ship on a weekly cadence, and write code the next engineer will thank me for.

Portrait of Priyanshu Singh
Based in
India · Remote
Focus
iOS · SwiftUI
Education
B.Tech CSE · AI
CGPA
9.62 / 10
02Experience

Three years. Three teams. One standard.

Feb 2024 · Present

Zignuts Technolabs

Senior iOS Engineer · iOS Lead · Remote / India

  • Led end-to-end iOS delivery across monthly release cycles · architecture, implementation, TestFlight, App Store submission, and live production monitoring.
  • Cut redundant API calls by ~35–40% with CoreData-backed offline caching, materially improving perceived performance on unstable networks.
  • Spearheaded TDD adoption with XCTest / XCUITest across every critical business-logic and networking path.
  • Architected feature modules per domain trade-offs using MVVM, MVP, and VIPER; owned team-wide coding standards.
  • Automated the full release pipeline (Codemagic, Xcode Cloud, GitHub Actions) · zero manual signing, tests, or TestFlight steps.
  • Engineered secure payment workflows (Apple Pay, PayPal, MangoPay) with escrow release logic, error recovery, and StoreKit subscriptions.
SwiftSwiftUIUIKitCoreDataWebSocketsStoreKitCodemagicXcode Cloud
Feb 2023 · Jun 2024

Linkusol Technologies

iOS Developer · India

  • Owned 10+ user-facing screens from Figma spec to release for an app with 5K+ active users.
  • Cut app startup time by ~30% by profiling and resolving rendering bottlenecks with Instruments and Memory Graph.
  • Authored XCTest suites covering API-driven views, loading, error, and empty states across variable network conditions.
SwiftUIKitXCTestInstrumentsREST
May 2022 · Jan 2023

VYAM

Mobile Developer Intern · India

  • Shipped 8+ screens for VYAM (4.4★, Google Play) from zero to public launch.
  • Cut crash rate by ~40% by applying MVVM and SOLID principles across the codebase.
FlutterMVVMSOLID
03Featured Projects

Shipped, measured, and still live.

Co-Tasker app screenshot
4.9★

Co-Tasker

Lifestyle Marketplace · Germany

Consumer marketplace live across German cities under a weekly release cadence. Custom CALayer animations, escrow payment flows, and real-time WebSocket chat.

Architecture
MVVM + Coordinator, Repository pattern, DI
Engineering
  • · Real-time chat over WebSockets with reconnection + offline queue
  • · Escrow release logic bridging Apple Pay + MangoPay
  • · Choreographed CALayer transitions at 60fps on mid-range devices
SwiftUIKitWebSocketsCALayerMangoPayCodemagic
View on App Store
Silencio app screenshot
4.8★

Silencio

Measure Noise & Earn · Global

SwiftUI sensor app with 1.6K+ ratings. Live noise measurement, crypto rewards, StoreKit subscriptions, and CoreData offline caching validated via Firebase A/B testing.

Architecture
MVVM with actors, Repository, Combine bridge
Engineering
  • · Precise dB sampling via AVAudioEngine under thermal / background constraints
  • · Reward ledger with idempotent sync + conflict resolution
  • · A/B tested paywall driving measurable retention lift
SwiftUIasync/awaitCoreDataStoreKitFirebase
View on App Store
VYAM app screenshot
4.4★

VYAM

Find Nearest Fitness · India

Cross-platform fitness discovery app taken from zero to public launch. MVVM + SOLID across the Flutter codebase drove a ~40% crash-rate reduction post-release.

Architecture
MVVM, SOLID, Repository, service-locator DI
Engineering
  • · Location-aware discovery with graceful offline fallbacks
  • · Design-to-ship pipeline across 8+ production screens
  • · Crash-rate reduction via disciplined state ownership
FlutterDartMVVMSOLIDRESTFirebase
View on Google Play
04Technical Skills

The stack, honestly. No résumé stuffing.

Languages

01
SwiftObjective-CDartJavaScriptTypeScriptPython

iOS

02
SwiftUIUIKitCombineAsync/AwaitActorsGCDCore DataAVFoundationCore LocationMapKitAPNsStoreKitURLSessionWebSocketsDeep Linking

Architecture

03
MVVMVIPERMVPClean ArchitectureCoordinatorRepositorySOLIDPOPDependency Injection

Testing & Perf

04
XCTestXCUITestTDDSnapshotInstrumentsTime ProfilerLeaksMemory Graph

CI / CD

05
CodemagicXcode CloudGitHub ActionsFastlaneTestFlightCode Signing

Backend & Pay

06
RESTJSONFirebaseAWS S3FastAPIGCPApple PayPayPalMangoPayStripe

Tools

07
XcodeGitPostmanCharles ProxyFigmaJiraBitrise
05Engineering Philosophy
"I don't just build apps.
I build products that scale, perform, and are enjoyable to maintain."
01

Clean Architecture

Boundaries first. Features change; the core shouldn't.

02

Performance

Measure with Instruments, not vibes. Every ms is user trust.

03

Maintainability

Code is read 10× more than it's written. Optimize for the reader.

04

User Experience

Polish is not decoration · it's the product.

05

Simplicity

The right abstraction beats a clever one, every time.

06

Scalability

Modularize by domain, not by file type.

07

Testing

TDD on business logic and networking, snapshots on views.

08

Code Quality

Reviews, standards, and taste, applied consistently.

06Achievements
700+
DSA problems solved
Top 5%
LeetCode Weekly Contest · global
4★
CodeChef rating
150+
Hackathon participants, led as Google DSC lead
9.62
CGPA · B.Tech CSE (AI)
07Testimonials

Words from people I've shipped with. Straight from LinkedIn.

"
He's definitely not just a mobile developer anymore · he's growing into a well-rounded software engineer who can contribute across multiple parts of a product ecosystem. Strong ownership, deep dives into production issues, and consistent investment in system design, backend, and DSA.
Divyesh Lagadhir
Divyesh Lagadhir
DevOps Engineer · Multi-Cloud
"
It's rare to come across someone as motivated and enthusiastic as Priyanshu. Exceptional at problem solving and attention to detail. He provided valuable insights, pushed me to expand my skills, and always made time to offer support.
Bhavin Gupta
Bhavin Gupta
Technical Lead @ Tata Consultancy Services
"
His ability to blend design and functionality is remarkable. He keeps the end-user in mind, ensuring the app is intuitive, responsive, and engaging. Any team looking to create a standout mobile experience would be lucky to have him.
Aman Singh
Aman Singh
Flutter Developer
08.5Currently Reading

Sharpening the craft, one system at a time.

Now reading

System Design for iOS Developers

Recommended read · deep dive into scalable mobile architecture

Currently studying · architecting client systems for scale, offline-first design, and cross-platform trade-offs.

System DesignScalabilityArchitectureiOSBackend
08Writing

Notes from the field, across the stack.

09Contact

Let's build something people actually keep open.

I read every message. Recruiters, engineering managers, founders · if there's a hard iOS problem and a team that cares, I want to hear about it.

Goes straight to my inbox · usually reply within 24h.