Engineering studio. Independent. Since 2017.
David Hennequin · founder
HDdev is an independent engineering studio that designs, codes, deploys and operates infrastructure for clients who want one competent contact across the entire scope — from custom WordPress plugin to PSD2 banking integration.
No intermediary account manager, no opaque subcontracting. The HDdev team remains your direct contact for the duration of the project.
core expertise
- · Advanced WordPress (plugins, perf, security)
- · Modern stack (Next.js, TypeScript, PostgreSQL)
- · PSD2 banking integrations (Bridge API)
- · Technical SEO and controlled hosting
in production
- · finance.hddev.eu — PSD2 fintech
- · apihub.hddev.eu — WP Hub + 11 modules
- · equilibre-global.be — wellbeing site
How we work
Written scope before any quote. No range: firm quote, signed scope, identified milestones.
Delivery in signed milestones. Any project longer than 10 days is split into milestones. You validate each step, you can stop at any step.
Systematic documentation. You leave with the source code, access, infrastructure, and documentation of what was done.
Three commitments written into article 4 of our terms — SEO without progress at 6 months (last month's invoice waived), PageSpeed < 90 within 30 days (full refund), major non-conformity within 12 months (fix within 5 business days). Self-executing, enforceable.
see the terms →