Blog

Writing by Rohan P. Suresh

Thoughts on software architecture, development practices, and lessons learned from building production applications.

Building an AI Code Reviewer That Actually Reads Your Code

How I built a production-grade AI agent that reviews GitHub pull requests with hybrid retrieval, tool use, and real evals — without LangChain or framework glue.

May 10, 20269 min read

Mobile

Building Cross-Platform Apps: React Native vs. Native Development in 2026

An honest comparison of React Native and native development based on shipping production apps with both approaches, covering performance, developer experience, and total cost.

February 18, 20268 min read

Architecture

How I Built a Real-Time Chat System with React Native & WebSockets

A deep dive into building a production-grade real-time chat system using React Native, WebSockets, and a Node.js backend with message queuing and offline support.

November 15, 20258 min read

Architecture

From Monolith to Microservices: Lessons from a Healthcare Platform Migration

Practical lessons learned migrating a large healthcare monolith to microservices, including what we got wrong, what worked, and when you should avoid microservices entirely.

October 20, 20258 min read

Integrating AI Voice Agents with Twilio: A Technical Deep Dive

How I built an AI-powered voice agent using Twilio, OpenAI's Whisper for transcription, and GPT-4 for conversational responses, with sub-second latency.

September 12, 20258 min read

React

Why Next.js is My Go-To for Client Projects (and When I Don't Use It)

After building over a dozen production apps with Next.js, here's my honest take on when it shines, when it's overkill, and the alternatives I reach for instead.

August 5, 20258 min read

Architecture

The Architecture Behind a Multi-Tenant SaaS Platform

A walkthrough of the technical decisions behind building a multi-tenant SaaS platform, from database isolation strategies to tenant-aware middleware.

June 22, 20258 min read

React

How I Improved App Performance by 40% with React Rendering Optimization

A case study on diagnosing and fixing React rendering performance issues in a production dashboard application, with measurable before-and-after results.

May 10, 20258 min read

A Developer's Guide to Generative AI Integration in Production Apps

Practical patterns for integrating LLMs into production applications, covering prompt engineering, cost management, error handling, and user experience design.

April 15, 20258 min read

Career

Async-First Engineering: Collaboration Patterns From Three Years Remote

Practical patterns from working on distributed engineering teams across multiple time zones — written RFCs, async standups, PR-driven discussion, and the meetings worth keeping.

March 1, 20259 min read

Accessibility

Building Accessible Applications: Going Beyond WCAG Compliance

Why treating accessibility as a checkbox exercise fails your users, and practical strategies for building genuinely inclusive applications from the ground up.

February 10, 202510 min read