Senior Software Engineer – Payment Processing

🔥 12 hours ago

🇺🇸 United States – Remote

⏳ Contract/Temporary

🟠 Senior

🧑‍💻 Full-stack Engineer

👻 Ghost score 12%

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Finalsite

WebsiteLinkedInAll Job Openings

201 - 500 employees

Founded 1998

📚 Education

☁️ SaaS

🤝 B2B

💰 Debt financing on 2014-12

Education • SaaS • B2B

Finalsite is a provider of web and communications technology for K–12 and higher education institutions. Finalsite offers an education-focused CMS and website design (Composer), AI chatbot tools, mass notifications and messaging, mobile apps, enrollment and admissions management, and marketing services aimed at helping schools build community, improve communications, and grow enrollment. The company serves school districts, independent schools, international schools, charter schools, and faith-based schools and notes it has been trusted by schools for more than 25 years.

📋 Description

• Design and build automated, end-to-end transaction lifecycle tracking to replace manual reconciliation • Build fraud detection, chargeback management, and other automated payment functions • Work across two parallel engine versions and processor integrations to resolve mismatches and reconciliation gaps • Partner with the storefront team to expose data that closes reconciliation gaps • Focus on quality, core-flow stability, and scalability as transaction volume grows • Plan and contribute to a shared payments-unification layer across the payment processing engine, storefront, and events platform • Use AI-assisted development tools to navigate a large, undocumented, multi-repository codebase

🎯 Requirements

• 8+ years of overall engineering experience, including strong backend engineering experience • Ideally experience with financial reconciliation, ledger, fraud, or transaction-processing systems • Hands-on PCI compliance experience and familiarity with PCI-DSS requirements • Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience • Comfort working in a large, non-microservices codebase spanning many repositories • Ability to trace and reason about data across disconnected systems • Ability to make backend architecture decisions independently, including service boundaries, data modeling, and system-design trade-offs • Experience with third-party payment processor integrations, including running two integration versions in parallel • Strong backend engineering fundamentals with a .NET / SQL Server-based stack, or ability to ramp quickly in one • Working knowledge of relational database design and operations with SQL Server, including schema design, query-performance tuning, and locking behavior at production scale • Familiarity with running and debugging a production service in a cloud environment; Azure preferred • Expertise in at least one programming language, ideally .NET, Java, or Python • Experience with at least one observability platform, such as Datadog, New Relic, or Honeycomb • Deep experience with automated testing frameworks • Proficiency with Claude Code, Codex, or comparable AI-assisted development tools • Preferred: experience with .NET or Java, deep Azure experience, payment-operations systems experience, consolidating or migrating parallel system versions, and payments or fintech background • Permanent residency in the United States is required to obtain and retain employment with Finalsite

🏖️ Benefits

• Competitive benefits • Professional development opportunities • Collaborative culture built on partnership and purpose • 100% fully remote employment opportunity

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