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Principal .NET Software Engineer- Cloud Payments Platform

1 month, 2 weeks ago
Canada
Full-time
Lead
Software Engineer
Software Development
AWS Azure C# Encryption GitHub Actions JavaScript .NET SQL TypeScript
Apply Now
Versapay

Versapay

Versapay provides cloud-based accounts receivable automation software and integrated payment solutions that enhance efficiency and cash flow for businesses by facilitating electronic invoice presentment and online payment collaboration with customers.

Capital Markets
51-250
Founded 2006
$16M raised
View All Jobs 21

Description

  • Own and evolve core payment services across card-not-present, EMV device-based, digital wallet, and payment orchestration flows.
  • Modernize existing payment components into cloud-native, distributed architectures using containers on AWS or Azure.
  • Own and extend end-to-end payment workflows including authorization, capture, void, refund, tokenization, clearing, funding, settlement, and reconciliation.
  • Expand support for international payments, including multi-currency and cross-border flows.
  • Integrate with payment service providers, EMV card readers, and device SDKs using secure, standards-based messaging.
  • Improve and maintain CI/CD pipelines in GitHub Actions, including builds, tests, security scans, packaging, and deployments.
  • Design and evolve test automation coverage for domain logic, API contracts, and integrations with external processors and devices.
  • Strengthen platform reliability through observability, fault-tolerant design, and automated operational workflows.
  • Partner with Product, Security, Compliance, and Operations to deliver features that balance customer experience, regulatory requirements, and operational robustness.
  • Mentor engineers, lead design and architecture discussions, and influence the long-term technical strategy for the payments platform.

Requirements

  • 10+ years of professional engineering experience, typically, with expert proficiency in C#, .NET, and SQL.
  • Deep experience in payments, including online payments, EMV device-based transactions, digital wallets, PayFac/orchestration flows, ACH/EFT, and international or multi-currency payment flows.
  • Proven ability to modernize production financial systems into cloud-native, distributed architectures.
  • Familiarity with monitoring and observability tooling for distributed systems.
  • Proven ability to work cross-functionally with Product, Security, Compliance, and Operations and communicate effectively with non-technical stakeholders.
  • Experience using AI-assisted development tools to improve productivity and code quality.
  • Hands-on experience with ISO 8583 transaction messaging, ISO 20022 payment messaging, DUKPT key management, secure device cryptography, HSMs, or EMV payment kernels.
  • Strong knowledge of RESTful API design, asynchronous messaging and queueing, caching, event-driven architecture, and high-availability patterns.
  • Strong knowledge of AWS or Azure, containerization, orchestration, and CI/CD automation.
  • Strong knowledge of PCI-DSS, encryption, tokenization, key rotation, and secure coding principles.
  • Experience with multi-region cloud architecture and distributed data patterns is preferred.
  • Experience with modern UX/front-end development such as JavaScript or TypeScript is preferred.

Benefits

  • Salary range of $160,000 to $190,000 per year.
  • Remote work location.
  • Opportunity to work on a high-scale payments platform with meaningful technical ownership.
  • Opportunity to influence technical direction across the platform.
  • Equal opportunity employer committed to diversity and inclusion.
  • Use of AI tools in parts of the hiring process, with final decisions made by humans.

Interested in this position?

Apply directly on the company website

Apply Now

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