SaaS Performance & Scalability Engineering
Your .NET platform isn't slow.It's unprofiled.
I find the exact query, lock, or allocation pattern that's costing your SaaS product its response time at scale — then fix it, with evidence, not guesses.
 What lands on my desk
Three symptoms, one root cause: nobody's profiled it yet
Symptom 01Response times creep up as customers onboard
Page loads that were fine in the demo now take seconds. Support tickets mention "the app feels slow" — but nothing's officially broken.
Symptom 02The platform falls over during peak traffic
Marketing runs a campaign, or a big customer goes live, and the app degrades or crashes right when it matters most.
Symptom 03The database has quietly become the ceiling
Engineering keeps adding servers and cache layers, but every roadmap conversation eventually runs into the same query, the same table, the same lock.
 How an engagement runs
Diagnose with evidence, fix with discipline, prove it with numbers
No platform rewrites, no rip-and-replace. Most of what's slowing a .NET SaaS app down lives in a handful of hot paths — this is how I find and close them.
PHASE 1 — DIAGNOSEProfile the real hot path
Production-grade load testing, query plans, and CLR profiling on EF Core, SQL Server, and Redis to find what's actually costing milliseconds — not what looks suspicious.
PHASE 2 — OPTIMIZEFix the bottleneck, not the symptom
Targeted changes to indexing, query shape, caching strategy, and concurrency — scoped tightly enough that your team can review and own every line.
PHASE 3 — VALIDATERe-test under the same load
Re-run the original benchmark against the fix, side by side, so "it's faster now" is a number in a report, not a feeling in standup.
 Case study
SQL Server indexing, not a bigger server
B2B SaaS · order management module Â
A missing covering index was driving table scans on every order lookup
The team's instinct was to scale the database tier up. Query plan analysis showed a scan, not a seek — the fix was a composite index and a query rewrite, deployed without downtime.
 Who's behind this
Twenty years in the .NET stack, the last several spent only on performance
I'm Rakesh, founder of Well Formed Mind. I've spent two decades in the Microsoft stack — C#, ASP.NET Core, EF Core, SQL Server, Redis, Azure, AWS — and I've narrowed my practice to one problem: SaaS applications that have outgrown their original architecture.
I write about this work too, under the "Technology Made Simple" series, because I'd rather hand your team a clear mental model than leave you dependent on me. Â
- Senior .NET architect, ~20 years in production systems
- Author, "Technology Made Simple" book series (EF Core, .NET Core Fundamentals)
- Independent — remote engagements across US & EU SaaS teams Â
Bring me one slow endpoint. I'll show you the trace.
30-minute diagnostic call — you describe the symptom, I tell you where I'd look first.
TECHNOLOGY MADE SIMPLE - Book Series [Go to Amazon]
