AZW

iOS engineer portfolio

Ahmad Zaky Wisnumurti

Shipping calm, resilient mobile products at scale.

Building secure, scalable iOS products with clean architecture and thoughtful user experience. I care about the work behind the interface too: architecture, delivery rhythm, product quality, and the small decisions that make teams faster over time.

Current focus

Currently focused on shipping resilient iOS experiences, leveling up architecture decisions, and documenting lessons from building production apps.

Read articlesazakyw@gmail.com

Architecture

Modular iOS systems with strong separation of concerns, maintainability, and delivery speed.

Product Quality

Attention to performance, UX details, secure data handling, and regression-resistant delivery.

Teamwork

Code reviews, pairing, and practical engineering tradeoffs that help teams move with confidence.

Selected work

A portfolio that explains how the product got better, not just what shipped.

I design and ship mobile products that balance engineering rigor with polished product execution. My work spans architecture modernisation, performance, testability, and the day-to-day collaboration needed to keep a product moving.

Why this format

I prefer portfolios that show engineering judgment, delivery tradeoffs, and writing, not just screenshots.

Selected projects

Privy Digital Signature App

Digital signature product built with Swift and UIKit using a modular MVVM architecture.

Open Privy Digital Signature App
  • Modular MVVM architecture focused on maintainability and feature isolation.
  • Custom URLSession-based networking layer for core product flows.
  • Unit testing around key gamification features.

Ruangguru Learning App

Learning app improvements focused on security, scale, and long-term maintainability.

Open Ruangguru Learning App
  • Secure local data management using Keychain for sensitive information.
  • Migration from MVC toward more scalable MVVM-based modules.
  • Regression-minded testing for revamped features.

Toolbox

  • Swift
  • SwiftUI
  • UIKit
  • Async/Await
  • Combine
  • SPM
  • Core Data
  • Unit Testing

Collaboration style

Code review, pairing, testing discipline, and architecture decisions that keep teams shipping without noise.

Languages

  • Indonesian
  • English

Experience

Shipping product work from architecture to the final experience.

  1. Aleph-Labs

    Current

    iOS Engineer

    Oct 2023 - Present · Jakarta, Indonesia

    Creative engineering company headquartered in Singapore and operating across the Asia Pacific.

    • Maintained iOS applications and improved user experience and performance by roughly 15%.
    • Implemented robust app architectures that improved development speed and long-term maintainability.
    • Collaborated closely with other developers through code review and pair programming sessions.
    • Implemented push notifications to improve user interaction and retention.

  2. Privy

    iOS Engineer

    Dec 2022 - Aug 2023 · Yogyakarta, Indonesia

    Digital signature and trusted identity platform focused on secure workflows at scale in Indonesia.

    • Worked closely with UI and UX designers to ship intuitive product experiences that supported a 4.8 App Store rating.
    • Reduced dependence on third-party networking libraries by engineering a custom URLSession-based network layer.
    • Initiated unit testing for gamification features and increased coverage to around 70%.
    • Modularized feature areas to improve scalability and code reuse.

  3. Ruangguru

    Software Engineer (iOS)

    Oct 2021 - Dec 2022 · Jakarta, Indonesia

    Large education technology company focused on digital learning services across Indonesia.

    • Revamped iOS architecture through modularization and helped reduce app load time by about 10%.
    • Implemented Keychain-based local data handling to improve application security.
    • Migrated engagement and gamification features to newer architecture patterns while preserving expected behavior.

Education & credentials

Foundations, and the habit of going back to school.

  • B.E. Electrical Engineering

    Universitas Gadjah Mada, Indonesia

    2016 - 2020

  • Apple Developer Academy Graduate

    2021

  • iOS Lead Essentials

    Essentials Developer by Caio and Mike

    2024

Writing

Articles are part of the portfolio, not an afterthought.

I use writing to clarify engineering choices, share production lessons, and capture how I think about building iOS products.

All articles
1 min read

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