I am opening a new project stream focused entirely on pengembangan perangkat lunak and need an experienced developer who can step in quickly, understand requirements with minimal hand-holding, and deliver clean, maintainable code. Because the product roadmap is still evolving, I am intentionally keeping the tech stack flexible; if you are confident you can pick the right tools and justify your choices, we will get along well. Day-to-day work may range from building core features and fixing tricky bugs to refining performance and writing concise documentation. Deliverables will be agreed per milestone but typically include: • Source code pushed to our private repo with clear commit messages • Brief implementation notes explaining key architecture decisions • A short walk-through video or call (optional, if changes are substantial) Please tell me about one recent project that best shows how you solve non-trivial programming challenges and how you ensure long-term maintainability. I’m ready to start as soon as I find the right fit.