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QA and testing · 5 technologies

Performance and security — how it behaves under load, and under attack.

A launch, a festival sale or a news mention can bring ten times the traffic; an attacker can arrive any day. I load-test with k6 and JMeter, audit speed with Lighthouse, and scan for vulnerabilities with OWASP ZAP and Semgrep, then fix what I find.

Technologies
JMeter · k6 · Lighthouse · OWASP ZAP · Semgrep
Support
Build · fix and maintain · upgrade and migrate · audit and advise
Typical
Load tests before launches and sales, with capacity recommendations
Pricing
Fixed price, or hourly from $10 by stack
Team
Me, plus a vetted team of 50+ for larger builds, 90% with 10+ years' experience
Start
Usually within one working day of agreeing the scope

01 — What I do with Performance and security

build, fix, upgrade, audit

Build

01

New Performance and security work from requirement to production: load tests before launches and sales, with capacity recommendations; Security scans and a prioritised fix list; Speed audits with before-and-after measurements.

Fix and maintain

02

The usual problems in existing Performance and security systems: the site that died on launch day, the admin panel open to the internet, and the SQL injection nobody checked for.

Upgrade and migrate

03

No testing to a repeatable load test, ad-hoc security to scheduled scans and dependency updates.

Audit and advise

04

A code, security, performance and SEO audit of your Performance and security system, with a written plan you can act on with or without me.

02 — Technologies

what each one is for

JMeter

Load and stress testing for web and APIs.

k6

Scriptable load tests that run in CI.

Lighthouse

Speed, accessibility and SEO audits.

OWASP ZAP

Dynamic security scanning of web apps.

Semgrep

Static analysis for vulnerable code patterns.

03 — Typical projects

what people usually ask for

Performance and security work
that actually gets ordered.

Three shapes most Performance and security engagements take. Yours may be a fourth; describe it and I will tell you honestly whether it fits.

  • Load tests before launches and sales, with capacity recommendations
  • Security scans and a prioritised fix list
  • Speed audits with before-and-after measurements

04 — Questions

about Performance and security work

Can you tell us how many users we can handle?

Yes. A load test gives a number, a bottleneck and a recommendation, usually within a day.

Is a security audit a penetration test?

It is a scan plus a manual review of the common weaknesses, with fixes. A full penetration test by a dedicated firm is a separate, larger exercise I can help you prepare for.

How is Performance and security work priced?

A fixed price for a defined scope, or hourly from $10 depending on the stack, always with a written estimate before any work starts.

How do we start?

Send a short description of what exists and what you need. You get a reply within one working day with questions, then a scope or an estimate.

06 — Start

describe the Performance and security project

Got a Performance and security project?

Tell me what exists, what you need, and the deadline if there is one. I reply within one working day with questions, then a scope or an estimate.

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