NEW .NET Developer Transactions team - eMobility (SaaS)

Deftpower
Deftpower

Software Engineering

Arnhem, Netherlands

Posted on Nov 13, 2026

The team. The Transactions team is a team of backend developers and a tech lead. The team owns everything financial in the platform: invoices, payments, ledgers and reconciliation with every partner. You work most with your tech lead, our product owners and the operations engineers.

Why now? Every charging session on our platform ends in an invoice and a payment. As more drivers charge with more brands, that volume grows, and downtime is not an option. We need another developer to keep it reliable while we keep building.

What you do. You build and run the backend services behind every euro that moves through our platform. You decide how a feature is built and how we make it hold up at scale.

  • Build invoicing, subscription and voucher features in C# and .NET

  • Integrate payment service providers, including Deftpay, our own white-label payment provider

  • Keep every ledger correct through reconciliation

  • Strengthen fraud measures, such as reserving money before a charging session starts

After six months. You've shipped a feature from shaping to production, for example in invoicing or subscriptions.