Case Study
Modernizing a legacy healthcare platform, incrementally
How we cut risk by modernizing a monolith in slices instead of a big-bang rewrite — and what actually moved the needle on performance and reliability.
Engineering Notes
The Eastesh blog
Practical guides and case studies on building products well — from MVPs and mobile to AI and modernization. Written by the team doing the work.
Case Study
Modernizing a legacy healthcare platform, incrementally
How we cut risk by modernizing a monolith in slices instead of a big-bang rewrite — and what actually moved the needle on performance and reliability.
Web Performance
Core Web Vitals in 2026: a practical performance checklist
What LCP, INP, and CLS actually measure, and the fixes that move them the most in real web apps.
SaaS
Designing multi-tenant SaaS architecture that scales
Tenancy models, data isolation, and the noisy-neighbor problem — the trade-offs we weigh on real SaaS builds.
How We Work
Dedicated team vs fixed-scope vs staff augmentation
How the three main engagement models differ, and how to choose the one that fits your team and product.
Product Engineering
How much does it cost to build an app? A realistic framework
The factors that actually move the number, why quotes vary so much, and how to budget sensibly.
AI Integration
A practical guide to adding AI features (without the hype)
A grounded playbook for adding LLM and AI capabilities to an existing product — where they help, where they don't, and how to ship them safely.
Mobile
Flutter vs React Native vs native: how we actually choose
The trade-offs we weigh on real projects — team, performance, timeline, and long-term maintenance — instead of picking a framework by fashion.
Product Engineering
How we build MVPs that don't need a rewrite later
Speed and quality aren't opposites. Here's how we ship a first version fast while keeping the architecture ready for what comes next.