W5 Engineering
Software that is secure because it was built that way.
We design and build backends, APIs and data platforms for fintechs, startups and SMEs. The same team that tests systems for weaknesses builds yours, so security is part of the design rather than a fix after launch.
Offers
Secure Build
Your backend or API, designed and built with threat modelling, auth, logging and a pentest before launch.
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Data platform build
Pipelines, a warehouse and dashboards on AWS, built so the right people see the right data.
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Architecture & code review
A written review of your design, scalability and security, with a prioritised fix list.
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Platform care
Hosting, patching, monitoring, backups and small changes on a monthly retainer.
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How it runs
Step 1
Scope
A call, then a written scope with rules of engagement. Nothing starts without signed authorisation.
Step 2
Test or build
Delivery against the scope. Critical findings are reported the same day, not saved for the report.
Step 3
Report
A one-page executive summary, reproducible proof for every issue, and fixes a developer can follow. Every finding is peer reviewed.
Step 4
Retest & support
A free retest within 30 days and a debrief call, then an option to keep us on retainer.
Tell us what you are building or worried about.
A 20-minute call is enough to know whether we can help and what it would involve. No pitch deck.