• Design and implement core backend services - including data modeling, compliance logic, and internal platforms that support tax automation at scale. • Build scalable systems to monitor, calculate, and apply transaction taxes across a wide range of jurisdictions and industries. • Develop and maintain our domain model for tax rules, jurisdictions, thresholds, and impositions. • Build automation pipelines for filings, payments, and customer workflows. • Use browser automation, scripting, and task queues to reduce manual work across compliance processes. • Leverage LLMs and programmatic tools to enhance tax research, rule extraction, and error handling. • Collaborate across engineering, tax, and product teams to turn complex policy into scalable software systems.

• Cross-functional Collaboration: You will join a product squad and work closely with designers, product managers, and experienced engineers across backend, frontend, mobile, and AI. • Shift in Software Engineering: Driven by AI, the role is moving toward end-to-end ownership—focusing on understanding user problems, shaping product decisions, rapid prototyping, and validating ideas, rather than just coding from strict specs. • A Shared Transition: The company is undergoing this transformation itself; you aren't expected to have everything figured out from day one. • Key Traits Valued: What matters most is your curiosity, adaptability, strong engineering judgment, and a genuine willingness to learn new ways of working. • Growth and Support: You will receive the tools, practices, and team environment needed to evolve into a product-minded, AI-enabled engineer while continuing to deepen your technical expertise.

• Own problems end-to-end: talk to users, understand their needs, and ship solutions • Build and maintain Python backend services that bring AI capabilities into production (e.g. document parsing, supplier matching, bid scoring) • Design and implement APIs and integrations connecting our AI systems with frontend applications and external platforms • Develop data pipelines to ingest, normalize, and process large volumes of structured and unstructured construction data • Collaborate with teammates on code reviews, testing, and CI/CD practices • Contribute ideas on applying new AI techniques to real procurement challenges

• Own the Partner API Platform: Design, build, and operate the backend systems, APIs, integrations, and platform capabilities that enable partners to connect with Vitable’s benefits infrastructure. • Lead ambiguous projects end-to-end: Take large, complex problems from discovery and technical design through implementation, release, monitoring, documentation, and iteration. • Set the standard for API design: Create simple, consistent, secure, and scalable APIs with strong conventions around authentication, authorization, pagination, filtering, error handling, idempotency, versioning, and backward compatibility. • Build a world-class developer experience: Develop and maintain partner-facing API documentation, sandbox environments, API key management, integration guides, testing tools, and examples that make integrations easy to understand and adopt. • Drive product and business impact: Partner with product, operations, implementation, customer success, sales, and business teams to understand partner needs, business goals, operational workflows, and integration constraints. • Shape technical direction: Make architectural decisions that balance speed, reliability, security, compliance, maintainability, developer experience, and customer impact. • Build reliable integration infrastructure: Develop systems with strong guarantees around correctness, idempotency, auditability, observability, access control, and failure recovery. • Scale partner operations: Build internal tools and automation that reduce manual implementation effort, improve partner onboarding, and make integrations easier to monitor, debug, and support. • Contribute across the stack: While the role is backend-focused, contribute to frontend and internal tooling experiences when needed to deliver complete product outcomes. • Raise the engineering bar: Write clean, maintainable code; participate in thoughtful code reviews; mentor other engineers; and champion engineering best practices. • Operate with urgency and ownership: Move quickly while maintaining high standards for quality, security, reliability, and long-term platform health.