Hire Emergency 24/7 Production Bug Fixers & Incident Engineers in London
Experiencing catastrophic server crashes, silent payment webhook failures, database deadlocks, or critical memory leaks in London? InnoXpert delivers immediate 1-hour triage, root-cause forensic debugging, and zero-downtime hotfixes with guaranteed 24/7 availability and verified 5.0-star trust.
Full working hours support (24/7 Emergency Coverage) with instant sync, daily standups, and Git reviews.
Market standard: GBP £75 - £120 / hr. Fixed-price milestone delivery or dedicated sprint contracts.
Serving founders across City of London Banking Halts, SaaS Payment Gateways, PostgreSQL Deadlocks.
UK GDPR • FCA Operational Resilience • PCI-DSS Level 1 • Cyber Essentials Plus.
What We Build for London Companies
Immediate 1-Hour Incident Triage & Root Cause Forensics
Instant mobilization analyzing production server logs, Sentry error traces, Datadog metrics, and heap dumps to isolate the exact root cause of fatal production errors.
Zero-Downtime Hotfix Deployment & Safe Rollback
Engineering surgical, minimally invasive hotfixes backed by automated regression tests and deploying safely without taking active users or databases offline.
Memory Leak Profiling & Connection Pool Tuning
Analyzing V8 heap memory snapshots, identifying uncollected closures and global event listeners, and resolving PostgreSQL/MySQL connection starvation.
Post-Incident Forensic Audit & CI/CD Guardrails
Delivering a comprehensive Post-Mortem incident report outlining what failed, why it failed, and adding automated GitHub Actions integration tests to permanently prevent regression.
Fixing Critical 24/7 Emergency Bug Fixers Bottlenecks
Root Cause: Accumulated memory leaks in uncleaned WebSocket event listeners, unmemoized caches, or runaway global arrays causing containers to exhaust RAM and restart.
Root Cause: Multiple asynchronous database queries attempting to acquire exclusive row locks in conflicting chronological orders.
Root Cause: Unhandled exceptions inside webhook handlers returning HTTP 500 to payment processors, causing automatic gateway suspension.
Featured Systems Built by Janitha Dilshan
BitRoys 50ms WebSocket Crash & Memory Leak Incident Recovery
Resolved Fatal High-Frequency Concurrency Crash in 3 Hours
Mobilized under active production outage where high-frequency WebSocket order books were crashing server instances every 20 minutes; isolated a subtle buffer accumulation leak and restored 100% stability.
RelyMarket High-Traffic Flash-Sale Database Deadlock Triage
PostgreSQL Deadlock Hotfix During Viral 50,000-User Drop
Resolved critical PostgreSQL transaction deadlocks halting checkout during a viral flash sale; implemented row-level advisory locks and atomic queue processing within 90 minutes.
NobelInves Zero-Downtime Hydration Mismatch & IEEE-754 Math Patch
Patched Mission-Critical Staking Calculation Drift Zero Downtime
Identified and hotfixed a critical floating-point calculation drift in daily automated yield distributions across 12 currencies, restoring exact penny-perfect accounting with zero customer interruption.
NEMOGuard API Injection & Buffer Overflow Emergency Mitigation
NVIDIA Hackathon Top Submission ($50K Prize Pool)
Neutralized an adversarial prompt-injection buffer exploit attempting to leak system instructions; deployed sub-15ms edge inspection microservices preventing unauthorized access.
Frequently Asked Questions — London
How quickly can you start investigating our live production outage?+
Do you deploy hotfixes directly into our production environment?+
What happens after the emergency is resolved?+
Can we hire you under milestone escrow via Contra or Upwork for emergencies?+
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Ready to Ship Your 24/7 Emergency Bug Fixers Project in London?
Let's build a fast, scalable, and bug-free web application. Whether you need a rapid AI prototype or an end-to-end enterprise platform, we guarantee clean code, daily communication, and 100% milestone satisfaction.