---
title: "Deepak Jain (@hahademon) | Hashnode"
description: "Writing about mobile app, automation, and software engineering. Read the latest articles by Deepak Jain on Hashnode."
url: "https://hashnode.com/@hahademon"
---

@hahademon

# Deepak Jain

@hahademon · Mumbai, India · Joined May 2026

Writing about mobile app, automation, and software engineering

### [Case Study: Reviving a 2016 Android App with an AI Agent](https://markdownsimplified.hashnode.dev/case-study-reviving-a-2016-android-app-with-an-ai-agent?utm_source=hashnode&utm_medium=feed)

A staged AI-agent approach facts first, tests before changes, incremental migration, turns a legacy codebase into a manageable rebuild

5 min read · [markdownsimplified.hashnode.dev](https://markdownsimplified.hashnode.dev/case-study-reviving-a-2016-android-app-with-an-ai-agent?utm_source=hashnode&utm_medium=feed)

[Sep 10](https://hashnode.com/posts/case-study-reviving-a-2016-android-app-with-an-ai-agent/6aa214981c968cafda304a23)

### [Beyond Prompts: How Agentic AI Actually Works (Especially for Coding)](https://markdownsimplified.hashnode.dev/beyond-prompts-how-agentic-ai-actually-works-especially-for-coding?utm_source=hashnode&utm_medium=feed)

Agent cost isn't about prompt wording — it's loop count and context bloat. Here's what actually drives agentic AI behavior.

5 min read · [markdownsimplified.hashnode.dev](https://markdownsimplified.hashnode.dev/beyond-prompts-how-agentic-ai-actually-works-especially-for-coding?utm_source=hashnode&utm_medium=feed)

[Aug 7](https://hashnode.com/posts/beyond-prompts-how-agentic-ai-actually-works-especially-for-coding/6a76300355c334890f84b6ad)

### [The Real Cost Table: 10 Prompt Patterns That Are Secretly Expensive](https://markdownsimplified.hashnode.dev/the-real-cost-table-10-prompt-patterns-that-are-secretly-expensive?utm_source=hashnode&utm_medium=feed)

A scannable table of 10 bad-to-good prompt swaps that quietly drive up your AI costs — plus the two root causes behind all of them

4 min read · [markdownsimplified.hashnode.dev](https://markdownsimplified.hashnode.dev/the-real-cost-table-10-prompt-patterns-that-are-secretly-expensive?utm_source=hashnode&utm_medium=feed)

[Aug 1](https://hashnode.com/posts/the-real-cost-table-10-prompt-patterns-that-are-secretly-expensive/6a6df57025a66ef92cee7b7e)

### [Two Prompting Modes: Explorer vs. Executor](https://markdownsimplified.hashnode.dev/two-prompting-modes-explorer-vs-executor?utm_source=hashnode&utm_medium=feed)

AI conversations aren't one-size-fits-all. Here's how to know whether to explore openly or write one detailed, one-shot prompt

4 min read · [markdownsimplified.hashnode.dev](https://markdownsimplified.hashnode.dev/two-prompting-modes-explorer-vs-executor?utm_source=hashnode&utm_medium=feed)

[Jul 27](https://hashnode.com/posts/two-prompting-modes-explorer-vs-executor/6a6777cb4bd125e22fbbf375)

### [Why Your AI Costs More Than It Should](https://markdownsimplified.hashnode.dev/why-your-ai-costs-more-than-it-should?utm_source=hashnode&utm_medium=feed)

Prompt cost isn't about length — it's re-processed context and ambiguity. Here's what's actually driving your AI bill up.

4 min read · [markdownsimplified.hashnode.dev](https://markdownsimplified.hashnode.dev/why-your-ai-costs-more-than-it-should?utm_source=hashnode&utm_medium=feed)

[Jul 24](https://hashnode.com/posts/why-your-ai-costs-more-than-it-should/6a63d104aa8dc8cc1a327d7e)