Rescue work
Make a slow app fast again without a rewrite
Profiling first, then targeted fixes to the handful of things actually causing the wait your users complain about.
What you get
- Profiling report identifying the top five bottlenecks with measurements
- Fixes applied with before-and-after timings for each
- Caching strategy documented with invalidation rules
- Performance budget with monitoring that alerts on regressions
Usually built with
React
PostgreSQL
Sentry
Lighthouse
A guide, not a requirement — sellers propose what suits your situation.
Who offers this
Cheapest first. Ratings are shown where there are enough reviews to mean something.
Close to this
Make a fast-built product GDPR-defensibleConsent, data export, deletion and processor records put in place before a customer's legal team asks for them.from €1,600Kill the queries melting your database billThe ORM calls your agent generated are hitting the database in loops. Found, fixed and indexed properly.from €1,400Fix a checkout that silently loses ordersPayments succeed at the provider but your database never hears about it. Webhooks, idempotency and reconciliation fixed.from €1,400First real test suite for a codebase with noneYour agent wrote thousands of lines and zero tests. I cover the paths that lose you money if they break.from €2,000Replace hand-rolled auth before it costs you usersSessions in local storage and passwords compared with equals signs, replaced by an auth setup that stands up to scrutiny.from €2,000Security audit of an app your agent wroteCoding agents leave predictable holes. I look for them specifically, then hand you findings ranked by real exploitability.from €1,200
What will it cost?
Four questions, an instant range. No account, no waiting.
Estimated range
€1,700 – €3,600
5-10
Based on the catalogue guide — nobody has published this service yet, so there is no market price to work from. An estimate, not a quote: a seller prices the real job once they have read it.
Request a quote
No account needed. You get a price and a timeline before committing to anything.