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Open to conversationsJakarta, ID
Agus Cahyono — Senior iOS Engineer

Shipping iOS that
millions trust
with their money.

Currently leading iOS at Bareksa — the investment app millions of Indonesians open every morning.

JakartaSwift · SwiftUIFintech
Download CV
Agus Cahyono
Currently shipping
SBN Tradable Native Migration · Bareksa
0+
Years shipping iOS
0M+
Users across products
0
Fintech modules led
▲
0%
Onboarding uplift at Bareksa
Trusted by
Bareksa logoBareksaStockbit logoStockbitSehatQ logoSehatQRoomMe logoRoomMeDOT Indonesia logoDOT IndonesiaOsraah logoOsraahHiApp logoHiAppBareksa logoBareksaStockbit logoStockbitSehatQ logoSehatQRoomMe logoRoomMeDOT Indonesia logoDOT IndonesiaOsraah logoOsraahHiApp logoHiApp
How I build

Product engineering,
not feature work.

I've spent a decade learning what makes products succeed — and it's rarely the technology alone.

Ship products, not features

Every line of code serves a user outcome. I don't build features — I solve problems that move business metrics.

Performance is a feature

Cold starts, scroll smoothness, animation frame rates — the invisible details that separate good apps from great ones.

Design is how it works

I care about the 200ms between tap and response. The transition no one notices. The spacing that just feels right.

Architecture for longevity

Code ships fast when it's well-structured. I build systems that let teams move with confidence, not caution.

Collaboration over silos

Great products are built by teams. I work closely with designers, PMs, and backend engineers to ship cohesive experiences.

Selected work

Impact over
output.

Growth

SBN Awareness

SwiftSwiftUIBottomSheetCombineAnalytics
Problem

Users weren't aware of active SBN (Surat Berharga Negara) offerings on Bareksa. Existing SBN promotions were buried deep in the app, missing the chance to convert interested users into first-time government bond buyers.

My role

Built a bottom sheet on the home screen that surfaces active SBN offerings in real-time. Designed the UI, integrated with the SBN API, and implemented smart display logic to show the sheet at the right moment without disrupting the user flow. Collaborated with product and marketing to define trigger rules based on user behavior.

SBN visibility on the home screen directly increased purchase intent. The feature became a key driver for Bareksa's SBN growth strategy.
▲ +45%SBN page impressions on home screen▲ +30%first-time SBN buyers
Mutual Fund · AI

Bareksa AI

SwiftSwiftUIWKWebViewJavaScript BridgeQuantit API
Problem

Investors struggled to make sense of their mutual fund portfolios — too many data points, no clear guidance. Bareksa partnered with Quantit to bring AI-powered portfolio analysis to retail investors, but the web-based engine needed a native iOS experience.

My role

Built the iOS integration from scratch — native shell for performance-critical views (navigation, caching, offline state) and webview for the Quantit-powered AI analysis engine. Orchestrated the bi-directional communication between native and web layers via JavaScript bridge. Handled edge cases like offline mode, session management, and deep linking into specific analysis views.

Bareksa became the first Indonesian investment platform to offer AI-driven mutual fund analysis, setting a new standard for retail investment UX.
▲ +52%user engagement in Mutual Fund module▲ +20%users completing portfolio review flow
Recurring Investment

Nabung Rutin

SwiftUIKitMVVMCombineBCA API
Problem

Millions of Indonesians want to invest regularly but find the process intimidating. Bareksa needed a frictionless recurring investment flow with bank integration to automate the entire process.

My role

Led iOS architecture and implementation. Designed the auto-debit flow with BCA integration. Built the entire onboarding-to-scheduling pipeline — from account linking to recurring schedule management. Worked closely with BCA's API team to handle edge cases like insufficient funds and payment retries.

Shipped end-to-end in8 weeks. Nabung Rutin became one of Bareksa's fastest-growing features, making recurring investment accessible to millions.
▲ +21%users adopting recurring investment▼ −40%drop-off during bank linking flow
Infrastructure

iOS Design System

SwiftUIUIKitSwift PackageFigma
Problem

The Bareksa iOS app had grown to50+ screens with inconsistent components, colors, and spacing. Feature development was slowing down as developers spent time recreating UI elements and fixing visual bugs.

My role

Designed and built the component library from scratch. Defined tokens, typography scale, motion language, and contribution guidelines. Created a Figma-to-code pipeline that kept design and engineering in sync. Established review processes to ensure adoption across the team.

Became the foundation for every new feature shipped since. Reduced UI development time significantly and eliminated visual inconsistency across the app.
▼ −35%time spent on UI development per feature▼ −90%visual inconsistency reports from QA
Discovery

Product Showcase

SwiftUICombineAnalyticsA/B Testing
Problem

Users couldn't easily discover Bareksa's growing catalog of investment products. The existing list view didn't communicate product value, leading to low engagement with new product launches.

My role

Built the discovery surface from scratch. Designed the card system, filtering logic, and deep-link architecture. Implemented analytics to track user behavior and ran A/B tests to optimize card layouts and content hierarchy.

Became the primary discovery surface for the catalog. Increased product visibility and helped users find investment products that matched their risk profile.
▲ +28%product page views from discovery▲ +15%conversion from view to purchase
Developer Experience

Internal Dev-Tool

SwiftUIKitUserDefaultsNetwork
Problem

The iOS team spent hours on manual debugging, environment switching, and feature flag management. Context switching between tools was killing development velocity and slowing down releases.

My role

Built an in-app developer tool accessible via shake gesture. Included environment switcher, feature flags, API logger, and performance overlay. Designed it to be non-intrusive — only available in debug builds, with zero impact on production performance.

Adopted by the entire iOS team within a week. Became an essential part of the development workflow, significantly reducing time spent on debugging and testing.
▼ −60%time spent on manual debugging per sprint
Experience

A decade
in the field.

2015 → Present
Bareksa logo
Bareksa
iOS Engineer
Jan 2024 — Present · 2 yrs 7 mosCurrent

Bareksa is Indonesia's largest retail investment platform. I joined to lead iOS engineering across the app's most critical modules — Gold, Stocks, Umroh, Mutual Funds, and Onboarding. My focus: ship faster without breaking what works.

  • Collaborated with cross-functional teams to ship features and maintain app stability, resulting in a 30% improvement in UX metrics
  • Built features across Gold, Stocks, Umroh, Mutual Funds, and Onboarding modules — achieving 20% improvement in engagement and process efficiency
  • Improved onboarding completion by 32% through cross-team collaboration and UX iteration
  • Built Nabung Rutin — recurring investment with BCA bank integration — from architecture to App Store
  • Built Product Showcase for Bareksa's investment catalog discovery
  • Created the iOS Design System, reducing UI dev time by 35% across the team
  • Migrated from CocoaPods to SPM, network layer to async/await, config to xcconfig, and code generation to XcodeGen
  • Refactored AppDelegate into StartUpTask architecture and adopted UISceneDelegate
  • Integrated MoEngage Rich Notification service to enhance user engagement
  • Built internal dev-tool that cut debugging time by 60%
Stockbit logo
Stockbit
iOS Engineer
Jun 2021 — Nov 2023 · 2 yrs 6 mos

Stockbit is one of Indonesia's largest retail investing platforms — combining social features with stock trading. I shipped trading and community features that served hundreds of thousands of daily active users.

  • Collaborated with cross-functional teams to develop new features and maintain app stability
  • Shipped real-time stock trading features with complex state management
  • Built social feed and community features for investor discussions
  • Developed and improved onboarding flows to streamline user acquisition
  • Built eIPO feature for Stockbit — enabling users to participate in IPOs directly from the app
  • Built Stockbit Academy iOS — educational platform for retail investors
  • Built External Community feature for broader investor engagement
  • Improved Watchlist Stock for better portfolio tracking experience
  • Improved app stability and crash-free rate to 99.5%+
SehatQ · RoomMe · DOT Indonesia
Senior iOS Developer
2015 — 2021 · 6 yrs

Six years across healthtech, hospitality, marketplace, and consultancy — each role deepened my understanding of how to build iOS products that scale. I owned architecture, delivery, and App Store publishing end-to-end.

  • Built and maintained iOS apps across healthtech (SehatQ), hospitality (RoomMe), marketplace, and consultancy (DOT Indonesia)
  • Owned end-to-end delivery — from architecture design to App Store publishing
  • Collaborated with designers and backend engineers to ship features on schedule
  • Improved app performance and stability through code reviews and refactoring
  • Grew from junior to mid-level iOS developer, taking on increasing ownership of modules
What they say

Words from
the team.

Had worked with Agus for almost two years. He is very responsible, initiative, adaptive and agile. He has incredible skills for iOS development and eager to learn more. Therefore, I highly recommend Agus.

Annisa Nabila Nasution
Annisa Nabila Nasution
iOS Engineer | Apple Developer Academy Graduate
Worked with Agus on the same team · Oct 2023

Having worked with Agus for 2 years. He is excellent professional. He has good ability to adaptive and motivate person. He has good knowledge for iOS especially for clean architecture and good fundamentals. I am impressed with his passionate and collaborative in the team with strong dedication.

Yonathan Wijaya
Yonathan Wijaya
Lead iOS Engineer at Stockbit
Managed Agus directly · Oct 2023

Had worked with Agus. He is a responsible, agile and communicative person. He has very good coding skills especially in iOS development and is a person who really understands the priority of the tasks assigned by the team.

Sofyan Setiawan
Sofyan Setiawan
Software Engineer at Mekari
Worked with Agus · Feb 2022

Agus memiliki profesionalitas yg patut saya acungi jempol. Dalam beberapa project dia memiliki inisiatif2 yg cukup kritis dan membantu. Semoga rekomendasi ini dapat membantu Agus dalam mengarungi jenjang karirnya.

Arya Pradana
Arya Pradana
Technopreneur
Worked with Agus · Jan 2022

He is a responsible man with professional skill, very accurate on doing his job. Nice to have colleague like Agus. Therefore I highly recommend him.

Raja Syahmudin Harahap
Raja Syahmudin Harahap
Mobile Engineering Manager
Worked with Agus · Jan 2022
Technical craft

Tools are
choices.

I choose deliberately. Every tool solves a specific problem.

Language & UI
SwiftSwiftUIUIKitObjective-CCore DataCore Animation

Swift for safety. SwiftUI for speed. UIKit for control. I pick the right tool per screen.

Architecture
MVVMCleanVIPViperTCACoordinatorStartUpTaskRepository

Architecture should enable velocity, not slow it down. I've shipped with all of these — and know when each fits.

Concurrency
async/awaitCombineRxSwiftGCDActorsTaskGroup

Modern Swift concurrency for new code. Combine for reactive UIs. GCD when you need surgical control.

Tooling
SPMXcodeGenxcconfigFastlaneSnapKitInstrumentsGit

Good tooling is invisible. I invest in automation so the team ships without friction.

Quality
XCTestXCUITestSnapshotTestingSwiftLintCI/CDCode Coverage

Tests aren't overhead — they're confidence. Snapshot tests catch visual regressions before users do.

Product
Design SystemsAnalyticsA/B TestingDeep LinkingFeature FlagsAccessibility

I build systems that let product teams move fast without breaking things.

Writing

Thoughts &
learnings.

SwiftUIDebuggingiOS

Meet Inspectly: An All-in-One Network Debugger for iOS Developers

A lightweight iOS debugging toolkit designed to help developers inspect, monitor, and mock network requests directly inside the app.

Apr 2026 · 8 min read
SwiftUIXcodeSwift

Modernizing Hyperion-iOS: Bringing Design Debugging to the SPM Era

If you've been in the iOS development world for a while, you've likely encountered Hyperion. Created by the talented team at WillowTree...

Feb 2026 · 5 min read
AlamofireSecurityiOS

SSL Pinning iOS (Alamofire + TrustKit)

A Practical Guide for Production-Ready Mobile Security. Learn how to implement SSL pinning in your iOS apps.

Jan 2026 · 6 min read
SwiftUIiOSSwift

Building a Local-First iOS App with SwiftData & Alamofire

Case Study: The Movie. Learn how to build a local-first iOS application using SwiftData and Alamofire.

Jan 2026 · 7 min read
What I believe

Software
is a craft.

I'm Agus — Jakarta-based, 7+ years building iOS products that millions use. I care about the intersection of engineering and user experience.

Agus Cahyono
Jakarta

The best code is invisible

Users don't care about your architecture. They care if the app feels fast, looks right, and works every time. I optimize for that.

Shipping beats perfection

I've learned that 80% shipped today beats 100% shipped next month. But I also know which 20% matters most.

Great products are built by teams

I've worked with designers, PMs, backend engineers, and QA. The best products come from real collaboration — not handoffs.

Say hello

Let's build something
that people trust.

Always happy to talk iOS, product, and craft — whether you're building something or just comparing notes.

agus.c@icloud.comDownload CV
LinkedIn GitHub
AC
agusc.com
iOS Engineer · Problem Solver · Builder
Swift · SwiftUI · Care
© 2026 Agus Cahyono