Senior Full-Stack Engineer & Tech Lead - AI Payroll

Vialto; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Vialto is seeking a Senior Full Stack Engineer to design, build, and operate secure, scalable products for Compensation Collection, Shadow Payroll, and Equity. You will work across Next.js/React front ends and C#/.NET services on Microsoft Azure in a highly regulated, multi-jurisdictional environment with emphasis on accuracy, auditability, and privacy.

You’ll own end-to-end features—from cross-border data ingestion to shadow payroll engines and equity event processing—while contributing to

Qualifications

• 5+ years of professional software development experience in enterprise web apps.
• Strong experience with Next.js and/or React (TypeScript, state management, performance).
• Backend experience in C#/.NET (ASP.NET, WebAPI) for high-integrity calculation and data processing.

Responsibilities

• Build modern web experiences for Compensation Collection, Shadow Payroll, and Equity products.
• Design backend services and APIs to support cross-border payroll and equity workflows.
• Deliver Azure-native implementations and ensure production readiness with logging, monitoring, and incident response.

Skills

Next.js/React (TypeScript)

C#/.NET

Azure

Security/compliance

AI-assisted development

Education

Bachelor’s degree in CS or related field

Master’s degree preferred

Tools

Workday

SAP/ADP/Shareworks

SQL Server/EF or NHibernate

Job description

Vialto is seeking a Senior Full Stack Engineer to design, build, and operate secure, scalable products for Compensation Collection, Shadow Payroll, and Equity. You will work across Next.js/React front ends and C#/.NET services on Microsoft Azure in a highly regulated, multi-jurisdictional environment with emphasis on accuracy, auditability, and privacy.

You’ll own end-to-end features—from cross-border data ingestion to shadow payroll engines and equity event processing—while contributing to