Senior Full Stack Engineer – Vialto Rewards - Senior Manager

Company description Join the leader in global work. Vialto helps leading organizations identify, develop, and execute their workforce priorities with confidence. Our practice areas include global tax, immigration, rewards, advisory and Vialto private and our team is the gold standard in navigating the complexities of cross-border compliance, and workforce strategies. We look for people our clients and assignees can count on to thoughtfully deliver clear solutions to complex problems.

To be the best in the business, we cultivate a dynamic, highly collaborative culture that fuels the growth of our people. We invite you to inquire boldly, learn deeply, and grow endlessly with us. You’ll work alongside recognized experts, shaping people-first, technology-driven solutions that drive the future of work. We help our clients achieve their goals and imagine new possibilities. And we can do the same for you.

Whatever your aspirations, Vialto can help you find your way. Job description Vialto is hiring a Senior Full Stack Engineer to design, build, and operate secure, scalable products that power our Compensation Collection, Shadow Payroll, and Equity offerings for the world’s most complex multinational employers. You will deliver hands-on engineering across Next.js and React front ends and C# and .NET

services running on Microsoft Azure, working in a highly regulated, multi-jurisdictional environment where accuracy, auditability, and data privacy are non-negotiable. This role is for an experienced engineer who can own end-to-end features—from cross-border compensation data ingestion to shadow payroll calculation engines to equity event processing—contribute to architectural decisions and consistently deliver production-ready solutions using agentic development practices including spec-driven development and agent-driven development with tools such as Claude Code and Codex.

You will build AI-native products and workflows, embedding AI capabilities directly into compensation, payroll, and equity workflows to reduce manual effort and improve global mobility outcomes.

Tasks Build and evolve modern web experiences for Compensation Collection, Shadow Payroll, and Equity products using Next.js, React, and Type Script with a focus on performance, reliability, and clarity for tax, payroll, and mobility operators. Design and implement backend services and APIs using C#, .NET, and WebAPI to support compensation data ingestion, cross-border payroll calculations, equity event processing, and integrations with client HR, payroll, and equity administration systems (e.g., Workday, SAP, ADP, Share works, E
* TRADE, Carta). Deliver Azure-native implementations of shadow payroll calculation engines, compensation aggregation pipelines, and equity tax event workflows using Microsoft PaaS services, secure patterns, and operational best practices. Contribute to system architecture and technical design for multi-country payroll, compensation, and equity domains, including integration patterns using REST, file-based feeds, and event-driven approaches. Own production readiness for your work including logging, monitoring and alerting, reconciliation tooling, incident response support, and operational documentation—critical for payroll cycles and equity event deadlines that cannot slip.

Apply secure development practices appropriate for handling sensitive compensation, payroll, and equity data including privacy, auditability, segregation of duties, and country-specific data protection requirements (GDPR, SOC 2, country-level payroll regulations). Partner with product, mobility tax, payroll, and equity subject-matter experts to translate complex regulatory and client requirements into technical plans and deliverables. Use…