Performance & SRE, on demand

Your systems are slow. Your team doesn't know why. We do.

Your external performance and SRE team. We run monitoring, load testing, and observability — so your engineers focus on shipping.

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10+ years in performance engineering and SRE. 100% open-source stack — k6, Grafana, OpenTelemetry. Everything we build is yours.

Does this sound familiar?

Alerts firing at 3 AM

Your on-call rotation is exhausted and alerts are noise — no one knows which ones actually matter.

Load tests that don't exist

You find out about performance bottlenecks in production, from customers, at the worst possible moment.

No SRE, no budget for one

A senior SRE costs $150K+/yr. You need the expertise without the full-time hire.

Every release is a guess

Deploys go out without any baseline — you don't know if today's release made things better or worse.

What we deliver

Performance as a Service

Know your limits before your users do.

Continuous load testing, synthetic monitoring 24/7, and monthly capacity planning. Real data every week — not a one-off test before a release.

Measured capacity baseline (Max TPS, breakpoint, p95)
Uptime + synthetic monitoring 24/7
Monthly load test + capacity planning report

Or start with

Performance Checkup 5-day assessment: capacity baseline, load test, performance audit, and a prioritized action plan.

$2,995 one-time Start with a Checkup

Also available:

Observability as a Service Diagnose any incident in 30 seconds. Alerts your team trusts, dashboards that answer questions, telemetry bill reduced 30–50%.
Fractional SRE Senior SRE embedded in your team. Incident command, post-mortems, reliability roadmap — $150K expertise at a flat monthly rate.
Fractional QA Tech Lead Your team ships fast — now make it safe. Test strategy, automation framework, CI/CD gates, and mentoring.

Vantx vs. hiring full-time

The expertise without the overhead.

Comparison of hiring in-house vs. Vantx
Aspect	Hiring in-house	Vantx
Cost	$150K–$200K/yr + equity + benefits	Flat monthly rate, cancel anytime
Time to start	3–6 months recruiting	Active in 1 week
Expertise	1 person, 1 skill set	Dedicated team: Performance, SRE, DevOps, QA, Growth, SEO
Risk	They leave, you start over	Continuous, documented, fully transferable knowledge

Common Questions

How does the subscription work?

Pick a service, subscribe, we start. Flat monthly rate. No hourly tracking, no surprise invoices. Pause or cancel anytime.

Is there a long-term contract?

No. Month-to-month. Cancel anytime. No lock-in, no exit fees.

How fast do you start delivering?

Most services are activated within the first week. Ongoing deliverables follow a clear weekly and monthly cadence.

Who works on my systems?

A dedicated team of senior specialists in performance, SRE, DevOps, and QA — augmented by AI agents. Not outsourced, not rotated.

How do we communicate?

100% async by default. Slack for questions, Loom for walkthroughs, PDF for reports. Video calls only when they add real value.

Still have questions?

Email us — we reply the same day

Ready to stop guessing?

Start a subscription today, or book a 15-minute call — we'll review your architecture and show you exactly where it breaks under load.