Your app is not broken. It is just slow. Pages take too long, a few endpoints time out under load, the database CPU sits high for no obvious reason, and users have started to notice. The advice you keep hearing is that you need to rewrite it or throw more servers at it. Usually you need neither. That is the gap I close. I find the specific places your app is actually slow and make them fast, with numbers to prove it.

What I Build

I make slow apps fast by fixing the real causes instead of guessing. I profile the app under conditions close to production and find where the time actually goes, then I go after the usual culprits in the order that pays off most. That means hunting down N+1 queries that fire hundreds of times for one page, adding the indexes the database is begging for, tuning the heavy queries that scan whole tables, and adding caching with something like Redis where the same expensive answer gets computed over and over. I also fix the quieter killers, pagination that loads everything at once, connection pools that are misconfigured, and payloads that are far bigger than they need to be. You end up with an app that responds in a fraction of the time and a short, plain writeup of what was wrong and what I changed, so your team understands the system better afterward, not less.

How I Work

I measure first, always. A performance fix that is not backed by a before and after number is just a guess, and I do not bill you for guesses. I find the biggest wins, fix them, measure again, and stop when the curve flattens, so you get most of the speedup early instead of paying for diminishing returns. I work solo and you talk to the person doing the work, not a manager relaying it. There is no agency markup and no week lost to coordination. I tell you up front what is realistic, because some slowness is architectural and worth naming honestly rather than papering over. Most performance engagements start around $2,500. You can ballpark your own project before we talk.

Proof

I optimized a production API to respond 3x faster across more than 100 endpoints, through database query tuning and Redis caching, with no rewrite. This is real work from my role as Lead Developer at CalendHub, where the systems I tuned serve more than 150 client organizations. Making things fast under real load is something I do on systems people depend on, not a benchmark I ran once on a toy project. You can see more of what I have built on my work page.

Further Reading

I broke down the exact order I work in, and why it adds up, in How I Made An API Three Times Faster Without A Rewrite.

Common Questions

What does a performance engagement cover? I profile your app, find the queries and code paths that are actually slow, and fix them, then hand you a short writeup of what was wrong. Do I need a full rewrite? Almost never. Most slow apps are slow in a few specific places, and I measure first so we fix those instead of rebuilding everything. How do you know it got faster? I measure before and after on the same workload, so the improvement is a number, not a feeling. How does pricing work? Most performance engagements start around $2,500, scoped against your app, with the shape told to you up front. How do we start? We get on a short call, you tell me what feels slow, and I tell you honestly what is likely going on and what the first measurable win looks like. Ready to make it fast? Book a call.