Performance issues rarely announce themselves — they accumulate quietly until they cost you customers.
Performance Testing & Optimization Services
Coredev Nexus identifies where systems slow down, break under load, or respond inconsistently — and fixes the underlying causes, not the symptoms.
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Six service areas, one clear focus
Each service targets a specific layer of the performance problem — from database query plans to network response paths. You can engage one area or combine several depending on where the friction actually lives.
Load & Stress Testing
Simulating real traffic patterns — from typical daily peaks to worst-case spikes — to find exactly where throughput degrades. We use tools like k6, Gatling, and JMeter configured for your specific architecture, not generic templates.
Bottleneck Identification
Profiling CPU, memory, I/O, and network layers simultaneously to isolate where time is actually lost. Many teams spend weeks optimizing the wrong layer — this service cuts straight to the root cause with flame graphs and trace analysis.
Database Query Optimization
Slow queries account for a disproportionate share of latency in most applications. We audit execution plans, index strategies, and connection pool settings across PostgreSQL, MySQL, and MongoDB environments to reduce query time measurably.
Frontend Performance Audit
Core Web Vitals scores alone do not tell you what to fix. We trace render-blocking resources, evaluate JavaScript bundle composition, and test real device performance on mid-range hardware — the kind your actual users are running.
API Response Analysis
Mapping latency across API chains to find where cascading delays originate. Particularly useful for microservice architectures where a single slow dependency creates a ripple effect across unrelated endpoints.
Continuous Performance Monitoring
Setting up ongoing measurement infrastructure so performance regressions are caught before they reach users. Includes alerting thresholds, dashboard configuration, and periodic review cycles tailored to your release cadence.
End-to-End Performance Overhaul
For teams dealing with persistent performance problems across multiple layers simultaneously, this engagement covers the full stack — from infrastructure profiling through database tuning to frontend delivery. Work is structured in diagnostic, remediation, and validation phases so progress is measurable at each step.
Typical engagements run four to eight weeks depending on system complexity. Deliverables include a written findings report, implementation guidance, and a post-remediation benchmark comparison.
Discuss your case
"We had been chasing a latency issue for three months before working with Coredev Nexus. The bottleneck identification service found it in the first week — a connection pool misconfiguration that nobody had thought to check. The rest of the engagement focused on hardening what we already had."
Ostap Verbytskyi — Infrastructure Lead, logistics sector