Senior Full Stack Engineer – Vialto Rewards – Senior Manager

Company: Vialto Partners
Apply for the Senior Full Stack Engineer – Vialto Rewards – Senior Manager
Location: London
Job Description:

Overview

In this role, you will design, build, and operate secure, scalable products for compensation collection, shadow payroll, and equity for complex multinational employers. You will own end-to-end features across frontend and backend, work in a regulated environment, and drive AI-enabled workflows. You’ll partner with cross-functional teams to translate regulations into technical plans and deliver production-ready solutions. This is an opportunity to shape global mobility tech at scale with AI-augmented engineering.

Responsibilities

  • Build and evolve modern web experiences for Compensation Collection, Shadow Payroll, and Equity using Next.js, React, and TypeScript
  • Design and implement backend services and APIs in C#, .NET, and WebAPI to support data ingestion, payroll calculations, and equity processing, with integrations to client HR systems
  • Deliver Azure-native implementations of payroll engines and data pipelines using PaaS services and secure patterns
  • Contribute to architecture for multi-country payroll and equity domains, including REST and event-driven integration patterns
  • Own production readiness: logging, monitoring, alerting, reconciliation tooling, incident response, and documentation for payroll cycles and equity deadlines
  • Apply secure development practices for handling sensitive data (privacy, audits, country-specific rules)
  • Partner with product and domain experts to translate regulatory requirements into technical plans
  • Use agentic development tools (Claude Code, Codex) and spec-driven workflows to accelerate design and implementation
  • Design and implement AI-powered features (data extraction, anomaly detection, LLM-assisted workflows, RAG)
  • Evaluate and integrate AI APIs and toolchains with a focus on responsible AI and observability
  • Mentor engineers through code reviews and technical guidance

Key requirements

  • 5+ years of professional software development
  • Strong experience with Next.js and/or React (TypeScript)
  • Strong backend experience in C# and .NET (ASP.NET, WebAPI)
  • Proven Azure cloud experience with PaaS services
  • Experience in regulated/compliance-oriented environments (security, privacy, data handling)
  • Solid understanding of design patterns, scalable architecture, and reconciliation in calculation-heavy systems
  • Experience with agentic/AI-assisted development (Claude Code, Codex) and AI-enhanced workflows
  • Experience delivering AI-enabled features (LLM APIs, prompt design)
  • Collaborative mindset
  • Strong communication across teams
  • Mentoring/leadership in engineering
  • Next.js
  • React
  • TypeScript

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Posted: October 1st, 2026