Vialto
Senior Full Stack Engineer – Vialto Rewards - Senior Manager
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Company Description
Vialto is a market leader in global mobility services. Our purpose is to ‘Connect the world’, making us one of the only standalone global mobility businesses—a unique opportunity for clients, stakeholders, and colleagues.
Our teams help companies streamline and manage global mobility programs efficiently while ensuring cost-effectiveness and compliance. Our services focus on cross-border compliance—covering tax, immigration, business travel, rewards, compensation, and remote work.
Working at Vialto means joining a global, dynamic team. With 8,000+ staff worldwide and continual growth, you’ll collaborate with clients from diverse industries and locations. By fostering global careers, we empower colleagues to develop skills and broaden their impact on global mobility.
At Vialto, we thrive in a culture of belonging, where everyone contributes their best selves, bringing unique strengths to serve communities effectively.
Explore more about our work through our podcast On the Move or follow us on LinkedIn and Instagram for the latest industry insights and company news.
Job Description: Senior Full Stack Engineer
Location: Remote (Global) Employment Type: Full-time
Vialto is hiring a Senior Full Stack Engineer to design, build, and operate secure, scalable products powering our Compensation Collection, Shadow Payroll, and Equity offerings. These technologies uphold the financial and compliance needs of the world’s most complex multinational employers.
Key Responsibilities
- Own end-to-end development of features across compensation data ingestion, shadow payroll calculations, and equity event processing.
- Collaborate with product, tax/mobility, and payroll teams to translate complex regulatory requirements into scalable, accurate solutions.
- Implement AI-native products and workflows, enhancing global mobility processes with automation and intelligent capabilities.
- Mentor junior engineers and drive technical excellence in a spec-driven, agentic development workflow (e.g., using tools like Claude Code or Codex).
Core Focus Areas
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Frontend Engineering
- Build modern web experiences for Compensation Collection, Shadow Payroll, and Equity products using Next.js, React, and TypeScript.
- Drive performance, reliability, and accessibility for users processing global payroll and equity data.
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Backend Development
- Design APIs and services in .NET and C# for cross-border compensation calculations, equity event processing, and client system integrations (e.g., Workday, WorkBright, ADP, Shareworks).
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Cloud Infrastructure
- Deploy and operate Azure-native payroll and compensation solutions, leveraging PaaS services and operational best practices.
- Ensure compliance with country-specific data regulations (e.g., GDPR, SOC 2).
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AI Integration
- Develop AI-powered features for data extraction, anomaly detection, and augmented workflows (e.g., LLM-assisted processes in compensation statements).
- Operating AI solutions responsibly with cost, security, and compliance governance.
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About the Role
Responsibilities
- Frontend Innovation
- Deliver high-performance SPAs with TypeScript, Next.js, and React (state management, optimization best practices).
- Backend Engineering
- Build scalable C#/.NET Web Services supporting compensation data aggregation, shadow payroll calculations, and equity event workflows.
- Cloud & DevOps
- Design Azure-native payroll and compensation pipelines with automated testing, logging, and monitoring.
- Secure end-to-end production readiness (reconciliation, incident response, documentation).
- Many-to-Many System Design
- Advise on integration patterns (synchronous REST + asynchronous feeds/event-based processing).
- Domain Expertise & Collaboration
- Work closely with tax, payroll, and equity SMEs to translate compliance requirements into technical blueprints.
- AI Built-In
- Accelerate deployment with agentic development workflows (spec-driven, AID-driven).
- Implement prompts, LLM APIs, and RAG models to automate financial workflows securely.
- AI Risk Safeguards
- Validate and operate AI-integrated payroll products with conformance to regulated financial processes.
- Mentorship -Share expertise through code reviews, pairing, and technical leadership across global teams.
Essential Tools You’ll Work With:
- Frontend Tech: Next.js, React, TypeScript, HTML, CSS, Trunk, Jest/Mocha
- Backend: ASP.NET Core, .NET, C#, SQL Server, Entity Framework
- Cloud Platform: Microsoft Azure, PaaS services, Cosmos DB, Functions, Event Hubs
- AI/ML Tools: Azure Cognitive Services, Claude Code, LangChain, Retrieval-Augmented Generation
- Systems: CI/CD pipelines, GitHub Actions, Observo, Chaos Engineering tools
Requirements
Technical Qualifications
- 5+ years experience in full-stack development (preferably with enterprise-grade applications in domains like payroll, compensation, or global mobility).
- Strong frontend authority: Years working with Next.js, React (TypeScript, Webpack, state management, performance optimization).
- Backend experience: C#/.NET Core development, Web API design, MVC architectures—focusing on high-integrity calculation services.
- Microsoft Azure expertise: Hands-on cloud architecture using PaaS services, including compute, networking, and identity solutions.
- Regulatory Systems: Experience in industries requiring compliance (e.g., healthcare, finance, or government) where accurate data handling and synchronization is critical.
- SDXC (Spec-Driven Development) and Agentic Development: Familiarity with spec-driven workflows and agentic tools like Claude, Codex, or similar LLM-assisted coding.
- AI Development: Experience embedding LLMs, prompt optimization, or RAG into application logic with security and governance oversight.
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Preferred & Valued Skills
- Payroll & Compensation Experience:
- Practical knowledge of cross-border payroll concepts (e.g., gross-to-net calculations, tax equalization, hypothetical tax).
- Background in shadow payroll systems, modified payroll compliance, or equity event processing (RSUs, ISOs, ESPPs).
- System Integrations:
- Direct integration experience with payroll, HCM, or equity platforms (e.g., Workday, SAP, ADP, Carta).
- Familiarity with asynchronous workflows, event-driven architectures for payroll processes.
- Azure Certifications: Cloud-related certifications demonstrating expertise.
- Testing & CI/CD:
- First-class testing disciplines (TDD, BDD, xUnit, Jest, CI/CD pipelines) with a focus on reconciliation, imminent deadlines (payroll, equity releases).
- Analytics/Reporting: Collateral experience with BI tools, data modeling, and compensation payroll analytics.
- Mobile Consideration: Exposure to iOS/Android app integrations and APIs supporting employee-employer interactions (e.g., accrual tracking).
Education & Background
- Degree: Bachelor's in Computer Science, Engineering, or a related technical field (required).
- Master’s Degree: Highly encouraged for technical specialization.
What Success Looks Like
- Delivery: Own complex projects end-to-end, meeting tight deadlines (payroll cycles, equity event windows) with scalable, robust solutions.
- Code Quality: Deliver maintainable, secure code—whether handwritten or AI-coauthored—with rigorous test coverage and documentation.
- Accuracy & Trust: Reduce errors through reconciliation controls and monitoring tools.
- Technical Leadership: Improve software patterns and architecture (e.g., integration roadmaps) through peer collaboration and mentorship.
- Compliance Precision: Prioritize security, auditability, and data protection in regulated environments.
- AI Integration Insights: Leverage AI mistakes, evaluating GPT prompts and RAG models while noting responsible use policies.
Why Join Vialto?
You’ll develop critical infrastructure for millions of globally mobile employees—Compensation Collection, Shadow Payroll, and Equity products critical for global enterprises’ financial compliance and workforce accuracy.
As a next-generation Senior Full Stack Engineer, you’ll:
- Carve responsive innovation in AI-powered compensation calculations.
- Work at the intersection of code, complex regulations, and smart automation.
- Shape cross-border workflows with scalable engineering choices for the future of global talent mobility.
We are an equal opportunity employer. AI is used in the screening process.
Interested? Explore more: Join Our Team.
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