Principal Solution Architect (Tax & Licensing)

Location: IL, US

Company

hirify.global builds software for state and local governments to collect taxes, license businesses, and serve the public. Its Tax & Licensing portfolio is being consolidated onto a multi-tenant Tax Transaction Engine and Tax Capability Rules Engine.

What you will do

• Own the end-to-end target architecture for transaction processing, ledgers, rules, tax calculation, forms, agency administration, and filer-facing experiences.
• Design multi-tenant capabilities including tenant isolation, jurisdiction-specific configuration, configuration-driven rates and rules, and schema-driven forms.
• Establish API-first and event-driven reference architectures and integration patterns.
• Assess existing products and define a sequenced convergence plan, including legacy modernization and migration of live agencies and their data.
• Partner on canonical data models, data conversion, and verification that migrated agencies are complete.
• Govern architecture through ADRs and reviews, contribute proofs of concept and reference implementations, coach senior engineers, and evaluate build, buy, and partner options.

Requirements

• 10+ years in software engineering, including 5+ years in a solution, platform, or enterprise architect role.
• Architecture ownership of a multi-tenant SaaS or large enterprise-grade product, including tenant isolation, configurability, and the operational economics of serving many customers on one platform.
• Experience leading platform consolidation or product convergence through delivery, including moving live customers and their data to a new platform.
• Strong domain modeling using DDD or equivalent, with transactional, financial, or ledger-style systems where correctness and auditability matter.
• Deep AWS or Azure cloud experience, including security, resilience, and cost design at scale.
• Experience with rules engines, configuration-driven design, or approaches that allow non-engineers to change system behavior safely.
• Clear written and verbal communication, with the ability to explain trade-offs to executives and engineers.
• Track record of influencing engineering teams without direct management authority.

Nice to have

• Tax, revenue, payments, government technology, or another regulated-domain background.
• Experience modernizing long-lived systems incrementally while they remain in production.
• Familiarity with MySQL or Aurora at scale across legacy and greenfield technology stacks.
• AWS or Azure Cloud Professional-level certification, such as Solutions Architect Professional or equivalent.

Culture & Benefits

• Hands-on architecture role with broad influence across several engineering teams.
• Collaboration with software engineering, data architecture, engineering management, QA, SRE, product management, and wider engineering leadership.
• Success is measured through a documented current-state assessment, target architecture, convergence plan, and ADR practice within the first 90 days.
• First-year goals include teams building against the agreed architecture, initial product or agency migrations with verified data conversion, and fewer one-off design decisions.