siliceum
Performance & Reliability Squad

Your critical systems deserve better than quick patches3am hotfixesduct tape solutionsprayers to the servers"TODO: fix later"salvation reboots"we'll see in prod"cursed legacy code"it's an edge case"coffee sacrifices

siliceum intervenes on production applications that slow down, crash, or cost too much.
Precise diagnosis, lasting fixes, autonomous teams.

See our packages
Our approach

Understand before fixing

Every intervention starts with rigorous analysis. We don't guess, we measure.

1

Factual diagnosis

No assumptions. We collect real metrics, profile in production conditions, identify the real bottlenecks.

2

System vision

UI, APIs, database, infra, business flows. We analyze the whole, not just the visible symptom.

3

Impact-based prioritization

We rank problems by real business impact. Quick wins first, structural work second.

4

Targeted fixes

Each fix is documented, tested, measured. We deliver clean PRs, not quick-and-dirty patches.

5

Before/after measurement

Each intervention is validated by concrete metrics. Response time, error rate, infra cost.

6

Built-in transfer

We don't create dependency. Your teams understand what we did and can maintain it.

Our services & pricing

4 packages to take back control

Each intervention follows a logic: understand, fix, transfer. Fixed prices, defined scope.

01
Recommended starting point

Performance & Reliability Audit

Understand what breaks, what slows down, what's likely to fail.

Starting at
€3,500
Flash Diagnosis · 1 week

Ce qu'on livre

  • Structured report with substantiated findings
  • Map of critical zones (perf, reliability, business)
  • Prioritized action plan 30/60/90 days
  • Presentation workshop with the team

Résultats clients

  • Klafuti — 100+ criteria analyzed in 10 days (with remediation)
  • Michelin — Microservices mapping, 8 fragility zones
Start a diagnosis
UI Performance
  • Core Web Vitals (LCP, FID, CLS)
  • Time to Interactive
  • Rendering & animations
API Performance
  • Response time P50/P95/P99
  • N+1 queries, pools, cache
  • Throughput under load
Application Reliability
  • Error handling, retry
  • Circuit breakers, timeouts
  • Failure points
Observability
  • Structured logs, traces
  • Application metrics
  • Dashboards & alerting
Infrastructure
  • Resource sizing (CPU, RAM)
  • Cloud costs & optimization
  • Distributed architecture
Business Flows
  • Critical paths identified
  • Business impact measured
  • SLA & SLO defined
02
Lasting fixes

Performance & Reliability Remediation

Fix the real causes, not the symptoms.

Starting at
€12,900
2-4 week sprint · 2-4 issues

Ce qu'on livre

  • PRs delivered, tested, documented
  • Before/after metrics for each fix
  • Complete intervention report

Résultats clients

  • Euromaster — P99 latency from 2.3s → 180ms
  • Asobo — Marketplace load time divided by 100
Fix now
User Interface
  • Load time divided by 2 to 10
  • Smooth navigation without freezes
  • Reduced bounce rate
Response Time
  • APIs responding in < 200ms
  • Load spikes handled
  • Optimized queries (÷10 sometimes)
Connectors & Integrations
  • Consistent data between systems
  • Errors no longer go unnoticed
  • Automatic retries that work
Daily Stability
  • Useful alerts, not noise
  • Dashboards that actually serve
  • Incidents resolved in minutes
03
Lasting autonomy

Transfer & Autonomy

Your teams become autonomous. We leave, it holds.

Starting at
€4,900
1-2 week pack

Ce qu'on livre

  • Targeted technical coaching
  • siliceum standards and checklists
  • Documentation and runbooks
  • Performance tests integrated in CI/CD

Résultats clients

  • Klafuti — Support tickets from 180 → 30/month
  • Logistics SMB — Diagnosis time from 4h → 12 min
Request a quote
Team Coaching
  • Identify where the system slows
  • Visualize bottlenecks
  • Follow a request end-to-end
Documentation
  • Incident procedures
  • Technical decision history
  • Diagnostic guides
Code Standards
  • Performance checklists
  • Code review guidelines
  • Anti-regression patterns
CI/CD Tests
  • Automated load tests
  • Non-regression benchmarks
  • Performance gates
04
Infrastructure simplification

Clever Cloud Migration

Simplify operations, regain cost control.

Starting at
€15,000
4-6 weeks

Ce qu'on livre

  • Technical and targeted mapping
  • Migration plan with rollback
  • Updated CI/CD
  • Controlled switchover + monitoring

Résultats clients

  • French PaaS — Sovereignty and compliance
  • Zero DevOps — Simplified operations
Discuss migration
Phase 1: Scoping
  • Component inventory
  • External dependencies
  • Network/security constraints
Phase 2: Preparation
  • Application dockerization
  • Clever Cloud configuration
  • CI/CD pipelines
Phase 3: Migration
  • Data migration
  • Load tests
  • Business validation
Phase 4: Switchover
  • Controlled DNS switchover
  • Enhanced monitoring
  • Post-migration support
FAQ

Frequently asked questions

Yes. Prices correspond to a standard scope. For Flash Diagnosis: 1 application. For Full Audit: up to 3 applications. If your context is more complex, we adjust during scoping. The quote is fixed before we start.

Ready to take back control ?

Free discovery call to identify your priorities and the right package. No commitment, no sales pitch. Response within 48h.

Book a slot
Satisfaction guarantee

If our audit reveals no significant improvement opportunity, we don't invoice.