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aldocastro.

Engineering, experimenting & exploring

$ whoami / Aldo Castro · Munich, DE

Building software. Connecting ideas. Always exploring.

Hey, I’m Aldo 👋 — a Senior Software Engineer focused on mobile architecture, cross-platform systems and FinTech. I turn complex engineering challenges into thoughtful, scalable solutions — and stay curious about what comes next.

Explore my work GitHub (opens in a new tab)
  • ~20 years in software engineering
  • iOS and Android native expertise, shared foundations
  • Panama to Germany Panama roots, Munich home

01 / Selected work

Less buzzwords. More things built.

Some of the engineering challenges I’ve enjoyed working through — where architecture, people and real-world impact meet.

FINTECH / MOBILE PAYMENTS

Making payments feel simple. Even when the systems behind them aren’t.

Contributed to bringing digital girocard and credit-card capabilities into mobile banking, combining native user experiences with shared business logic through Kotlin Multiplatform.

~40%

reported time saved on shared business logic*

Kotlin Multiplatform · iOS · Android · Architecture

STREAMING / JOYN

One player, every screen.

Led an eight-engineer cross-platform team working toward a unified media-player experience across iOS, Android and the web.

Cross-platform leadership · Media playback

TECH TALKS / ARCHITECTURE

Not a silver bullet.

Sharing the practical trade-offs, benefits and lessons of adopting Kotlin Multiplatform for mobile payments.

Knowledge sharing · Architecture decisions

*Approximate, project-specific figure.

02 / Expertise

Technologies change. Good engineering endures.

I care about readable code, pragmatic decisions and systems that are built to last — not technology for technology’s sake.

  • Native mobile engineering

    Swift · SwiftUI · Kotlin · Jetpack Compose · iOS · Android

  • Cross-platform architecture

    Kotlin Multiplatform · Coroutines · Shared business logic · Native UX

  • Software design & delivery

    Clean Architecture · Modularity · Dependency injection · Technical leadership

  • Data, APIs & emerging tech

    Ktor · SQLDelight · SQLite · AI-assisted development · Automation

03 / Experience

Built over time.

“Understand the problem. Challenge the assumptions. Then write the code.”

  1. CURRENT · BANKING TECHNOLOGY

    Atruvia

    Senior software engineering and technical leadership focused on mobile banking and digital payment architecture.

  2. PREVIOUS · STREAMING TECHNOLOGY

    Joyn

    Cross-platform mobile and media engineering, with experience leading delivery across iOS, Android and web teams.

  3. FOUNDATIONS · MOBILE DEVELOPMENT

    From native roots to shared systems

    Nearly two decades evolving with the mobile ecosystem, from native development to modern cross-platform approaches.

04 / What I’m exploring

Curious about what’s next.

These days I’m exploring AI-assisted engineering, intelligent automation and the overlap between software and entrepreneurship. Still experimenting. Still learning. Still building.

Currently exploring, presented as terminal output
  • AI-assisted engineering
  • Agentic systems & automation
  • Building useful products
  • Making complex things simpler

05 / Beyond the keyboard

Born in Panama. At home in Munich. Usually up to something.

I moved to Germany in 2011 and have been collecting stories, perspectives and interesting challenges ever since. When I’m not designing systems, you’ll probably find me in the mountains, on my bike, travelling or dancing salsa and bachata.

Technology is a big part of my life. Thankfully, not the only part. 😄

  • 🏔 Mountains
  • 🚲 Cycling
  • 🌍 Exploring
  • 💃 Salsa & bachata
  • ☕ Good conversations
Portrait of Aldo smiling outdoors, standing among pine trees in the mountains

06 / Connect

Have an interesting idea? I’d love to hear it.

Whether it’s engineering, something you’re building, or just a good conversation — feel free to say hello.