Senior Software Engineer, Billing & Financial Systems

About Command|Link Command|Link is a global SaaS Platform providing network, voice services, and IT security solutions, helping corporations consolidate their core infrastructure into a single vendor and layering on a proprietary single pane of glass platform. Command|Link has revolutionized the IT industry by tackling the problems our competitors create. In recognition for our unprecedented innovation and dedication, Command|Link was recognized as the SD-WAN Product of the Year, ITSM Visionary Spotlight, UCaaS Product of the Year, NaaS Product of the Year, Supplier of the Year, and the AT&T Strategic Growth Partner. Command|Link has built the only IT platform for scale that solves ISP vendor sprawl and IT headaches. We make it easy for our customers to get more done, maximize uptime and improve the bottom line. Learn more about us here ! This is a remote position open to candidates residing in the following states: Alabama, Arizona, Arkansas, Colorado, Florida, Georgia, Indiana, Kansas, Kentucky, Louisiana, Maryland, Michigan, Mississippi, Missouri, Nevada, New Hampshire, North Carolina, Ohio, Oklahoma, South Carolina, Tennessee, Texas, Utah, Virginia, Wisconsin About your new role: We’re looking for a Senior Software Engineer to lead the modernization of CommandLink’s billing, license management, and financial systems—the backbone of our fast-growing SaaS enterprise. This isn’t about incremental feature work. It’s about transforming a legacy, monolithic PHP environment into a resilient, service-oriented architecture that powers accurate billing, license enforcement, accounting, and historical financial reporting—at scale, without disrupting the business. You’ll set the technical direction, architect migration strategies, and lead engineering execution to ensure we deliver a modern, global-ready financial platform that’s bulletproof in accuracy, compliance, and scalability. Your work directly impacts revenue operations, customer trust, and the speed at which we can innovate. Billing, licensing, and accounting aren’t back-office functions—they are the system of record for how value flows through our business. Getting this right means we can scale confidently, innovate faster, and maintain absolute trust with customers and partners. If you want to own the modernization of a critical financial platform at a company already at massive scale and still growing fast—this is the role. Key Responsibilities: Architect the Future State : Design a modular, service-driven financial platform—billing, license management, and accounting—that can evolve with the business. Lead Legacy-to-Modern Migration : Define and execute pragmatic migration strategies that move us from a fragile monolith to a modern stack—without breaking existing operations. Build Scalable Billing Services : Own the architecture for invoicing, payments, reconciliations, and revenue recognition that must be precise, reliable, and auditable. Integrate with Global Financial Systems : Architect integrations with ERP, payment gateways, and accounting platforms (NetSuite, QuickBooks, Stripe, Zuora, Chargebee, etc.). Guarantee Data Integrity : Engineer for consistency, reconciliation, and historical accuracy across complex transactional systems. Set Standards : Drive observability, performance, and security across all financial services. Cross-Functional Leadership : Work directly with Finance, Product, and Operations to ensure technology aligns with compliance, business velocity, and customer impact. What you'll need for success: Deep Engineering Experience : 10+ years building and scaling backend systems with strong fundamentals in transactional integrity, distributed systems, and service architectures. Proven Modernization Track Record : Hands-on experience decomposing legacy systems (especially PHP-based) into modern service platforms. Integration Mastery : Strong history integrating with ERP, accounting, and payment systems (NetSuite expertise highly valu ... (truncated, view full listing at source)