phase 01 · 10 days
Initial scoping
€2,990
- Audit of your existing architecture
- Detailed technical specification
- Implementation plan with milestones
- Precise quantified estimate for the integration phase
Banking integrations · PSD2 · Open Banking
PSD2 banking integrations — Bridge API, compliance, production rollout.
We operate internally finance.hddev.eu — a multi-country EU fintech platform with Stripe Live, Belgian Peppol and 24 languages. We bring this experience to your PSD2 projects.
02 · Three distinct phases
Scoping, integration, maintenance — billed separately, no surprises.
phase 02 · on quote
Integration
from €12,000
- Bridge API implementation (aggregation, transfer, IBAN check)
- PSD2 + GDPR compliance
- Full regression testing
- Complete API documentation + integration scripts
- Assisted production rollout
phase 03 · recurring
Maintenance
€490 /mo
- Bridge API updates and PSD2 compliance
- Continuous monitoring of calls and success rate
- Technical support within 4 business hours
- Monthly usage and incident report
- No minimum duration commitment
prices excl. VAT · PSD2 contractual question (multi-tenant sub-licensing vs. client signs Bridge directly) to be clarified during scoping based on your use case
03 · Our internal reference
finance.hddev.eu — our own fintech in production.
Stack and features
- · Backend FastAPI + PostgreSQL + SQLAlchemy
- · Frontend Next.js 14 App Router + TypeScript
- · Bridge API for PSD2 banking aggregation (BE/FR/NL/DE and EU)
- · Stripe Live for payments and subscriptions
- · Belgian Peppol for B2B electronic invoicing
- · Full i18n (24 EU languages)
- · Swiss hosting (Infomaniak) with EU CDN (Bunny.net)
Production indicators
- supported EU countries
- 27
- UI languages
- 24
- PSD2
- Bridge API
- 30-day uptime
- 99,98 %
04 · Regulatory compliance
PSD2, GDPR, Belgian banking secrecy — framework mastered.
PSD2 / EBA
EBA framework respected, aggregation via licenced AISP/PISP providers (Bridge API). No banking licence required on the end client side in the aggregated integration model.
Full GDPR
Data processed only in Europe (Swiss Infomaniak + EU Bunny). DPA available, public subprocessors. User rights (access, rectification, erasure) baked into the design.
Belgian banking secrecy
Article 458 of the Criminal Code and SPF Finance rules respected. No banking data flows through unlicenced third parties. Full audit logs for traceability.
Got a banking integration project?
Start with a 10-day scoping at €2,990. At the end, you walk away with a detailed technical specification and a firm quote for the integration phase.