Scaling PVS Integrations and Embedded Finance at Nelly Solutions

How I scaled PVS integrations, helped shape the patient intake, embedded payments, factoring, and instalments into practice systems, and enabled expansion to Italy and Spain.

Berlin health and fintech company founded in 2021 and backed by Lakestar, b2venture, Motive, Cathay Innovation, Notion. Series B €50m in 2025. €100m debt facility with VVRB in 2024. 100+ employees. 1,200+ practices. 2m+ patients processed. 30m+ documents digitised. Nelly operates a B2B SaaS platform for medical and dental practices that digitises patient intake e-signatures and PVS workflows. Revenue is generated from recurring subscriptions (per practice or tier), payment transaction fees, and financing economics from factoring and patient instalment plans delivered via banking partners, partnerships with Adyen and VVRB. The go-to-market strategy focuses on direct sales to group practices and PVS partnerships that embed Nelly into clinic workflows.

Nelly must seamlessly integrate a fragmented PVS ecosystem while ensuring reliable, versioned, and observable bidirectional data sync. It should support multi-language, accessible intake, and legally valid e-sign and consent lifecycle. Payments, factoring, and instalments should be embedded with real-time risk, automatic reconciliation, and clean accounting outputs under strict GDPR controls. Expansion should add country-specific tax, invoicing, SEPA, payouts, and operations discipline with release trains, rollbacks, and partner SLAs.

Replace paper, integrate with PVS at scale, and tie intake to payments, factoring, and instalments. Stay GDPR compliant. Prepare for multi-country rules:

I led an integration programme that reduced partner onboarding time and raised reliability.

• Versioned APIs and adapters. Stable contracts, semantic versions, deprecation policy, change logs.
• APIs and mappers. Fast write-back of anamnesis, consents, invoices, and payment states to systems like Charly and InSuite.
• Sandbox and conformance tests. Simulator PVS, test suites, CI checks for partners.
• Data sync. Master data updates, conflict rules, audit trails.
• Observability. SLOs per connector, dashboards for time-to-sync and failure rates.
• Support model. Tiered partner programme, release calendars, early-access channels for major PVS.

• Dynamic forms in 30+ languages. Conditional paths, validation, accessibility, mobile first.
• E-sign and consent ledger. Purpose limitation, revocation handling, timestamped trails.
• QR and remote pre-check. Save and resume, reminder cadences by SMS and email.
• Patient portal. Documents, invoices, signatures, payment links.
• Staff tooling. Missing-field prompts, auto reminders, and unsigned-doc queues.

• Payments. Adyen POS and links. Apple Pay, Google Pay, SEPA. Automatic reconciliation back to PVS.
• Factoring. Intake-linked risk checks, one-click enrolment, 24-hour payouts. Status mirrored in PVS. Real and non-recourse options.
• Installments. Up to 36 months. Plan offers tied to treatment plan acceptance. Consolidation of multiple invoices.
• Accounting outputs. Daily journals, VAT summaries, export to tax advisors.

I led the Integrations Team to build the GTM and enter new markets while keeping one platform.

• Italy launch. Local language, tax and invoicing specifics, payout with local IBANs, Adyen acquiring, patient payment preferences. Dental focus due to high self-pay share.
• Spain preparation. Localisation, SEPA mandates, receipt and invoice formats, data residency considerations, consent text in Spanish.
• Country packs. Toggleable features, price books, notification templates, and legal copy.
• Go-to-market enablement. Playbooks for onboarding, migration, and staff training.
• Risk controls. Country-specific underwriting rules, payout limits, and review queues.

I aligned Product, Engineering, Risk, Legal, Operations, and Banking partners.

• Release cadences. Monthly trains with freeze windows for critical connectors.
• Underwriting policies. Versioned rules tied to regulatory timelines and partner SLAs.
• DPIAs and privacy gates. No release without passed DPIA and consent copy approval.
• Incident playbooks. Connector rollback, message replays, and partner comms templates.
• Partner governance. Joint steering with Partner PVS, shared KPIs, and quarterly audits.

• Faster integration cycles and higher connector reliability.
• Higher intake completion and fewer unsigned consents.
• Shorter time to cash via factoring and improved reconciliation in PVS.
• Italy live and Spain ready with reusable country packs.
• Reduced support load through observability and partner self-serve.
• Measurable reductions in admin time and payment delays at practices.