The bug is costing you money. We find it and kill it.
Some bugs are annoyances. Others block checkouts, crash the app during peak hours, or quietly corrupt a month of data. Erzon puts a senior engineer on the ones you can't live with, in your codebase, in your stack, with a fix you can verify.
Critical bugs get triaged within one business hour.
Call us if you're seeing…
- Users hitting errors on checkout, signup, or login, the paths that pay the bills.
- The app crashes or restarts daily and nobody has found the pattern.
- Memory climbing until the process dies, the classic slow leak with an OOM ending.
- A third-party integration silently stopped syncing, payments, CRM, shipping, auth, and you found out from a customer.
- An endpoint that times out under real load but works fine in staging.
- A performance regression: the app is measurably slower since a release, and no single change looks guilty.
- Bugs that only happen in production, race conditions, timezone edges, that one customer's data.
- A security issue, leaked credential, vulnerable dependency, suspicious traffic, that needs a competent fix now.
All fixable, most within a focused engagement. If it's bleeding revenue now, book the fix.
What we do.
Production bug hunting
Reproduce, isolate, fix, verify. We work from evidence, logs, traces, cores, metrics, not guesses. The deliverable is a fix in your codebase plus why it happened.
Crash & stability fixes
Unhandled exceptions, resource exhaustion, restart loops, deadlocked workers. We find the trigger and the underlying fault, and make the failure mode survivable.
Memory leaks & resource issues
Heap profiling, leak isolation, connection and file-handle exhaustion. The process stops dying at 3 a.m.; you get the graph proving it.
Integration repair
Failing webhooks, expired OAuth tokens, breaking API changes upstream, retry storms, poisoned queues. We fix the sync, backfill what was missed, and add the alarms.
Performance & load
Profiling under real traffic: N+1 queries, chatty APIs, missing caches, blocking calls on hot paths. Latency comes down; the report shows before and after.
Security fixes
Patch vulnerable dependencies, rotate exposed credentials, close injection and auth holes, and give you a plain-language account of exposure. Pragmatic remediation, not a 40-page scare PDF.
Stacks: JavaScript/TypeScript (Node, React, Next), Python, PHP/Laravel, Ruby on Rails, Java, C#/.NET, Go, and mobile backends. Legacy code welcome, most production bugs live in code nobody wants to touch.
Two ways to engage.
Emergency fix
A senior engineer on your incident fast, triage first, stabilize, fix, then a written root-cause report. Flat scope agreed before any work starts.
Get emergency helpReliability retainer
A monthly engagement: we monitor, patch, harden, and handle incidents with a guaranteed SLA, from an engineer who already knows your stack.
See retainer plansMini-FAQ.
Do you need to learn our whole codebase first?
No. Production debugging is a skill of narrowing, not memorizing, we follow the evidence from symptom to fault and read only the code that matters. Senior engineers land fixes in unfamiliar codebases every week; that's the job.
Will your fix go through our review process?
Yes, and we prefer it. We ship as pull requests with clear descriptions, tests where they belong, and no drive-by refactors. Your team reviews and merges; the fix belongs to your repo, not to us.
What if the bug can't be reproduced?
Then the first deliverable is making it observable: targeted logging, tracing, or capture around the suspect path so the next occurrence convicts the culprit. "Can't reproduce" is a stage of debugging, not a verdict.