https://www.mobilesystemdesign.com/blog Master mobile app architecture and system design interviews en-us Copyright 2026 Tjeerd in 't Veen tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen) tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen) Tue, 10 Feb 2026 09:10:25 +0100 Tue, 10 Feb 2026 09:10:25 +0100 3600 https://www.mobilesystemdesign.com/opengraph.png https://www.mobilesystemdesign.com/blog 1024 1448 Master mobile app architecture and system design interviews https://www.mobilesystemdesign.com/blog/mobile-testing-strategies/Why manual testing alone isn't enough for mobile apps and what comprehensive testing strategies can help fill the gaps.tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen)Mobile DevelopmentTue, 14 Oct 2025 00:00:00 +0200truehttps://www.mobilesystemdesign.com/blog/mobile-testing-strategies/https://www.mobilesystemdesign.com/blog/what-is-a-mobile-platform-engineer/Most mobile developers never get the chance to touch platform engineering. These roles typically exist only at larger companies that have reached the scale where developer productivity becomes a bottleneck rather than feature delivery. Because platform engineering roles are still relatively rare, most developers don't really understand what the work involves or whether it might be right for them. I want to change that by sharing what I've learned from four years in the trenches as a mobile platform engineer.tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen)Mobile DevelopmentTue, 29 Jul 2025 00:00:00 +0200truehttps://www.mobilesystemdesign.com/blog/what-is-a-mobile-platform-engineer/https://www.mobilesystemdesign.com/blog/six-feature-development-mistakes/Most feature development slowdowns stem from fundamental thinking mistakes rather than technical knowledge gaps. Learn the six critical architectural thinking traps that consistently slow down mobile development and how to avoid them.tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen)Mobile DevelopmentWed, 09 Jul 2025 00:00:00 +0200truehttps://www.mobilesystemdesign.com/blog/six-feature-development-mistakes/https://www.mobilesystemdesign.com/blog/what-is-mobile-system-design/What is Mobile System Design? Learn how system design applies to modern mobile apps, why it matters, and what makes it different from backend system design.tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen)Mobile DevelopmentTue, 01 Jul 2025 00:00:00 +0200truehttps://www.mobilesystemdesign.com/blog/what-is-mobile-system-design/https://www.mobilesystemdesign.com/blog/reducing-friction-designers-developers/Practical tips for improving designer–developer collaboration and reducing the frustration that comes from late-stage design changes.tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen)Mobile DevelopmentTue, 17 Jun 2025 00:00:00 +0200truehttps://www.mobilesystemdesign.com/blog/reducing-friction-designers-developers/https://www.mobilesystemdesign.com/blog/how-to-prepare-for-a-mobile-system-design-interview/A practical guide with resources for mobile engineers preparing for mobile system design interviews.tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen)Mobile DevelopmentWed, 04 Jun 2025 00:00:00 +0200truehttps://www.mobilesystemdesign.com/blog/how-to-prepare-for-a-mobile-system-design-interview/https://www.mobilesystemdesign.com/blog/why-design-system-matters/As a developer, it's tempting to ignore design systems and just build from handoffs. But a good system isn't just for designers; It helps developers work faster, make better decisions, and build polished UIs together with design.tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen)Mobile DevelopmentTue, 06 May 2025 00:00:00 +0200truehttps://www.mobilesystemdesign.com/blog/why-design-system-matters/https://www.mobilesystemdesign.com/blog/advice-to-younger-self/Reflections from 25 years of building software and 15 years in mobile. Lessons on reusable code, developer mindsets, third-party dependencies, and staying focused on what really matters.tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen)Mobile DevelopmentFri, 18 Apr 2025 00:00:00 +0200truehttps://www.mobilesystemdesign.com/blog/advice-to-younger-self/https://www.mobilesystemdesign.com/blog/design-system-spacing/Why structuring spacing matters in mobile UI design, how to define spacing primitives and semantics, and why this matters for scalable, maintainable views.tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen)Mobile DevelopmentSun, 06 Apr 2025 00:00:00 +0200truehttps://www.mobilesystemdesign.com/blog/design-system-spacing/https://www.mobilesystemdesign.com/blog/modular-lessons/Learn key lessons to translate a monolithic codebase into a modular one.tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen)Mobile DevelopmentMon, 12 Aug 2024 00:00:00 +0200truehttps://www.mobilesystemdesign.com/blog/modular-lessons/https://www.mobilesystemdesign.com/blog/transitive-dependencies/Sometimes we end up with Dependency A that has Dependency B that has Dependency C. But A may not know about C. This article explains how to handle that without relying on fancy frameworks.tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen)Mobile DevelopmentMon, 17 Jun 2024 00:00:00 +0200truehttps://www.mobilesystemdesign.com/blog/transitive-dependencies/https://www.mobilesystemdesign.com/blog/declarative-api-design/To fit the declarative realm, we can get fancy and design a declarative API. Let's go over some techniques to add to your tool belt.tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen)Mobile DevelopmentFri, 31 May 2024 00:00:00 +0200truehttps://www.mobilesystemdesign.com/blog/declarative-api-design/https://www.mobilesystemdesign.com/blog/what-if-your-feature-was-a-command-line-tool/When working with UI, it can sometimes be ambiguous where to place business logic. By imagining our features as a Command Line Tool, this can become quite clear.tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen)Mobile DevelopmentMon, 12 Feb 2024 00:00:00 +0100truehttps://www.mobilesystemdesign.com/blog/what-if-your-feature-was-a-command-line-tool/https://www.mobilesystemdesign.com/blog/self-sufficient-features/Imagine features capable of functioning independently, without relying on their parent too much, if at all. They can handle their tasks autonomously, with no need to be micromanaged by an ancestor class.tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen)Mobile DevelopmentThu, 08 Feb 2024 00:00:00 +0100truehttps://www.mobilesystemdesign.com/blog/self-sufficient-features/https://www.mobilesystemdesign.com/blog/reusable-components/Reusability and duplication are tough to balance. What if I told you that, sometimes, you don't have to?tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen)Mobile DevelopmentMon, 30 Oct 2023 00:00:00 +0100truehttps://www.mobilesystemdesign.com/blog/reusable-components/https://www.mobilesystemdesign.com/blog/ui-architectures/Discover why UI architectures are less important than it might seem.tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen)Mobile DevelopmentTue, 18 Apr 2023 00:00:00 +0200truehttps://www.mobilesystemdesign.com/blog/ui-architectures/https://www.mobilesystemdesign.com/blog/shift-left-testing-approaches/In this article, we'll figure out approaches to get stronger integration tests early in the development journey.tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen)Mobile DevelopmentSun, 12 Mar 2023 00:00:00 +0100truehttps://www.mobilesystemdesign.com/blog/shift-left-testing-approaches/https://www.mobilesystemdesign.com/blog/receiving-designs/In this article, you will read about how to get more out of designs, and figure out ways to deliver features faster.tjeerd@mobilesystemdesign.com (Tjeerd in 't Veen)Mobile DevelopmentSun, 11 Dec 2022 00:00:00 +0100truehttps://www.mobilesystemdesign.com/blog/receiving-designs/