Principal .NET Software Engineer – Cloud Payments Platform

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Versapay

Site WebLinkedInTous les Emplois

201 - 500 employés

Fondée en 2006

🤝 B2B

💳 Fintech

☁️ SaaS

💰 €4 000 000 Post-IPO Debt en 2019-11

B2B • Fintech • SaaS

Versapay est une entreprise qui propose un réseau collaboratif de gestion des comptes clients (AR), conçu pour offrir des solutions d'automatisation des AR et de paiements B2B de premier plan. La plateforme fournit des outils pour automatiser les tâches AR, gérer les applications de trésorerie et faciliter les paiements B2B sur plusieurs canaux, tout en s'intégrant avec des systèmes ERP tels que Microsoft Dynamics, NetSuite et Sage Intacct. Les solutions de Versapay aident les équipes à collaborer efficacement via le cloud, réduisant les traitements manuels et améliorant le flux de trésorerie. L'entreprise se concentre sur la simplification du processus de facturation-encaissement à l'aide de l'intelligence artificielle, améliorant l'expérience client avec des portails faciles à utiliser et offrant des méthodes de paiement numérique complètes. Versapay soutient également des transactions B2B à grande échelle dans le monde entier, promouvant l'efficacité et les bénéfices environnementaux grâce à la facturation numérique.

Description

• Own and evolve core payment services for online (CNP), device-based EMV (CP), digital wallets (e.g., Apple Pay, Google Pay), and payment facilitator/orchestration flows. • Modernize and improve existing components into more cloud-native, distributed architectures using containers on AWS/Azure. • Own and extend end-to-end payment workflows: authorization, capture, void, refund, tokenization, clearing, funding, settlement, and multi-source reconciliation. • Expand capabilities for international payments, including multi-currency and cross-border flows. • Integrate with payment service providers (PSPs), EMV card readers, and device SDKs using secure, standards-based messaging. • Improve and maintain CI/CD pipelines in GitHub Actions (automated builds, tests, security scans, packaging, deployments). • Design and evolve test automation strategy, covering domain-level logic, API contracts, and integration with external processors and devices. • Strengthen platform reliability through observability (metrics, logs, traces), fault-tolerant design, and automated operational workflows. • Partner with Product, Security, Compliance, and Operations to deliver features that balance customer experience, regulatory requirements, risk, and operational robustness. • Mentor engineers, lead design and architecture discussions, and influence the long-term strategy for the payments platform.

🎯 Exigences

• Significant experience (typically 10+ years) of professional engineering with expert proficiency in C#, .NET, and SQL. • Deep experience in payments: online payments, EMV device-based transactions, digital wallets (e.g., Apple Pay, Google Pay), PayFac/orchestration flows, bank account rails (ACH/EFT), and international/multi-currency payment flows. • Proven ability to modernize production financial systems into cloud-native, distributed architectures. • Familiarity with monitoring and observing distributed systems using modern observability tooling. • Proven ability to work cross-functionally with Product, Security, Compliance, and Operations, and to represent engineering effectively to non-technical stakeholders. • Experience using AI-assisted development tools to enhance productivity and code quality. • Deep hands-on experience with several of the following: • - ISO 8583 transaction messaging • - ISO 20022 data models and payment messaging • - DUKPT key-management and secure device cryptography • - Hardware Security Modules (HSMs) and secure key lifecycle • - EMV payment kernels and card/device authentication flows. • Strong knowledge of: • - Modern API and integration design (RESTful services), asynchronous messaging/queueing, caching, event-driven architecture, high-availability patterns. • - AWS or Azure, containerization, orchestration, and CI/CD automation. • - PCI-DSS, encryption, tokenization, key-rotation, and secure coding principles. • Nice to Haves: • - Experience with multi-region cloud architecture and distributed data patterns. • - Experience with modern UX/front-end development (e.g., JavaScript/TypeScript)