# William Kindlien Gunawan William Kindlien Gunawan is a remote worker on Himalayas, Technical Lead, iOS at Bank Tabungan Negara (BTN), based in Indonesia. Source: https://himalayas.app/@williamkindliengunaw ```text I lead iOS architecture and ship secure banking, wellness, and consumer apps with Swift. ``` | Detail | Value | | --- | --- | | Availability | Looking for a job | | Location | Indonesia | | Authorized to work in | Indonesia | | Salary expectations | 20000k+ IDR | | Job categories | IOS Technical Lead Manager, iOS Developer, Mobile Architect, Mobile Engineering Manager | | Skills | Swift, SwiftUI, UIKit, Combine, Clean Architecture, SOLID, Swift Package Manager, MVVM, REST APIs, API Design, API implementation, HealthKit, Core Data, Swift Data, AVFoundation, Accessibility, Localization, Background Tasks, Debugging, Snapkit, Quick, Nimble, Unit Testing, WatchKit, WatchConnectivity, CoreLocation, MapKit, CoreBluetooth, Vision, ARKit, RealityKit, Core Graphics, Core Video, SpriteKit, App Clips, PencilKit, TipKit, CreateML, Animation, User Notifications, Privacy, Kotlin, Flutter, React Native, NodeJS, Python, C++, SQL, Firebase, Google Cloud Platform, AWS, Fastlane, Sentry, Alamofire, HTML, CSS, VB.NET, MS Access, Microcontrollers, IoT, Sensors, Bluetooth, Generative AI, Project Management, Scrum, Technical Leadership, Mentorship, Cross Team Negotiation, Code Review, Technical Documentation | ## What I'm looking for ```text I'm looking to lead iOS architecture and end-to-end delivery of secure, high-impact mobile products while mentoring engineers and collaborating closely with backend, QA, product, and design teams. ``` ## About ```text At Bank Tabungan Negara, I guide iOS technical direction for BALE, defining Clean Architecture, Combine, SOLID principles, and modular Swift Package Manager frameworks. I steer complex fintech delivery from backend contract negotiation to secure production UI. I also lead full-stack iOS development for Revive Active's ActivityReward, a B2B wellness gamification platform. I built its reward economies, live participation, competitive rankings, background HealthKit tracking, and RESTful API integrations through App Store release. Previously at Bank Rakyat Indonesia, I delivered high-impact features for BRImo, including a Sort Menu and major modules with custom UI and secure API integration. I've also built mobile architecture, custom animations, and matching-engine contributions for Stroll, plus a WatchOS fitness app with live heart-rate tracking and offline data protection at Vertex 5. I'm hands-on with Swift, SwiftUI, UIKit, HealthKit, and secure API implementation, while setting code-review standards and helping engineers grow. I work comfortably across backend, QA, design, product, and international remote teams. ``` ## Experience ### Technical Lead, iOS (current) Bank Tabungan Negara (BTN). Jan 2026 - Present ```text Guides iOS technical direction for BALE mobile banking app, defining Clean Architecture, Combine, SOLID principles, and modular Swift Package Manager frameworks. Steers end-to-end delivery of high-complexity fintech features and drives code review standards. ``` Skills: Swift, SwiftUI, UIKit, Combine, Clean-Architecture, SOLID, Swift-Package-Manager, REST-APIs, Code-Review, Security ### Senior iOS Engineer & Technical Lead (current) Revive Active Ltd. Oct 2024 - Present ```text Leads full-stack iOS development of ActivityReward, a B2B wellness gamification platform, from architecture through App Store release. Designed and built the core gamification engine, including reward economies, live participation features, and competitive ranking systems. ``` Skills: SwiftUI, HealthKit, AWS, REST-APIs, CI-CD, Gamification, Technical-Documentation ### Freelance Web Designer & Program Developer (current) Self-employed. Jan 2019 - Present ```text Delivered client web and software projects, including a bakery business website (HTML/CSS) to boost publicity and sales, and a finance & inventory management system (VB.NET, MS Access) that reduced manual errors and costs. Developed iOS applications using Swift. ``` Skills: HTML, CSS, VB.NET, MS-Access, Swift, iOS ### iOS Developer Bank Rakyat Indonesia (BRI). Nov 2024 - Jan 2026 ```text Delivered multiple high-impact features for BRImo, one of Indonesia's largest mobile banking apps, including a new Sort Menu feature and two major new modules requiring custom UI and secure API integration. Built and maintained features in UIKit with RESTful API integrations aligned to banking security standards. ``` Skills: UIKit, REST-APIs, Security, iOS, Collaboration ### Senior iOS Developer Stroll. Jun 2025 - Sep 2025 ```text Built the core mobile architecture (Clean Architecture + MVVM) for Stroll, a UI-intensive dating and lifestyle app, supporting fluid custom animations and gesture-driven navigation. Designed a custom scaling algorithm enabling distortion-free, consistent UI across all iPhone screen sizes. ``` Skills: Clean-Architecture, MVVM, Custom-Animations, iOS, Scaling-Algorithm ### iOS Engineer Vertex 5. Feb 2024 - Oct 2024 ```text Built a WatchOS fitness app from scratch with full iOS connectivity (SwiftUI, HealthKit, Core Data), including live heart-rate tracking and real-time workout data sync. Designed a data storage architecture with offline fallback to prevent data loss during connectivity gaps. ``` Skills: SwiftUI, HealthKit, Core-Data, Watch-OS, Offline-Data-Storage, Real-time-Sync ### Automotive Engineer tmsuk Co.. Jul 2024 - Sep 2024 ```text Led a cross-functional team in the end-to-end design of amphibious flood-rescue vehicles, including SWOT analysis, cost optimization, and safety/durability testing. Managed project timeline and resources using Scrum, producing full technical documentation. ``` Skills: Project-Management, Scrum, Technical-Documentation, SWOT-Analysis, Cost-Optimization ### iOS Developer Apple Developer Academy. Mar 2023 - Dec 2023 ```text Built three shipped apps spanning iOS and iPadOS: a career-assessment tool, a hidden-object game, and a family-bonding iPad app promoting childhood development. Collaborated on a hardware-software integration project (MRT Jakarta crowd monitoring), demonstrating full-stack capability. ``` Skills: iOS, IPadOS, Swift, UI-UX-Design, Project-Management, Hardware-Software-Integration ## Education ### Apple Developer Institute for Professionals Accelerated Leadership Development & Professional Mastery, Leadership Development ```text Completed the Accelerated Leadership Development & Professional Mastery program in 2026. ``` ### Binus ASO School of Engineering Bachelor of Science, Automotive and Robotics Engineering. 2020 - 2024. Grade: 3.91/4.00 Activities and societies: Member, Base AI Coding Club. Core coursework: Computer Science, Data Science, IoT, Machine Learning, Electrical Engineering, Python, Cloud Computing. ```text Bachelor of Science in Automotive and Robotics Engineering with Summa Cumlaude honors, Dean's List 2023, and Best Final Project Award 2024. ``` ### Apple App Development with Swift Associate, App Development ```text Earned the App Development with Swift Associate certification in 2023. ``` ### Great Learning Advanced Cyber Security: Threats & Governance, Cyber Security ```text Completed the Advanced Cyber Security: Threats & Governance certification in 2023. ``` ### Great Learning Ethical Hacking: Mobile Platforms & Network Architecture, Ethical Hacking ```text Completed the Ethical Hacking: Mobile Platforms & Network Architecture certification in 2023. ``` ### Google Google Cloud Certifications, Cloud Computing ```text Earned multiple Google Cloud certifications and skill badges in 2022. ``` ## Tech stack - Alamofire - Google Cloud Platform - React Native - Flutter - Sentry - Node.js - UIkIt - Nimble - Python - Kotlin - Swift - C++ - fastlane - SwiftUI - Firebase - SQL - ARKit - Core Data - Core Graphics - RealityKit - SwiftData To contact William Kindlien, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire). ## People also viewed - [Agus Cahyono](https://himalayas.app/@aguscahyono): Software Engineer, PT. 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