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Senior Full Stack Engineer – Vialto Rewards - Senior Manager

London, London, United Kingdom💼 Full-time🗓 2026-06-25 → 2026-09-18

Core

Design, build, and operate secure, scalable products for Compensation Collection, Shadow Payroll, and Equity offerings for multinational employers.

Role type

Senior Full Stack Engineer (Compensation & Payroll)

Builds

Next.js/React front ends and C#/.NET services on Microsoft Azure

Domain

Global mobility, tax compliance, and payroll

Deliverable

production ML models | product features

Required skills

Next.js, React, TypeScript, C#, .NET, WebAPI, Microsoft Azure, REST, event-driven architecture, AI/LLM integration, RAG, secure development, spec-driven development, agentic development (Claude Code, Codex)

Preferred skills

Mentorship, pairing, technical guidance on domain patterns

Technologies

Next.js, React, TypeScript, C#, .NET, WebAPI, Microsoft Azure, Claude Code, Codex

Responsibilities

Build modern web experiences for compensation and equity products; Design and implement backend services and APIs for data ingestion and payroll calculations; Deliver Azure-native implementations of calculation engines and workflows; Contribute to system architecture and technical design; Own production readiness including logging, monitoring, and incident response; Apply secure development practices for sensitive data; Partner with subject-matter experts to translate regulatory requirements; Use agentic development practices to accelerate SDLC; Design and implement AI-powered features; Evaluate and operationalize AI APIs and models; Mentor and support other engineers

Seniority

Senior, hands-on IC with mentorship responsibilities

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