Senior Principal Systems Engineer

Job Description

Tri Net is a leading provider of comprehensive human resources solutions for small to midsize businesses (SMBs). We enhance business productivity by enabling our clients to outsource their HR function to one strategic partner and allowing them to focus on operating and growing their core businesses. Our full-service HR solutions include payroll processing, human capital consulting, employment law compliance, and employee benefits, including health insurance, retirement plans and workers’ compensation insurance.

We are seeking a visionary Senior Principal Systems Engineer to architect, govern, and transform our Microsoft 365 ecosystem, AI-powered solutions, and custom digital platforms. This senior technical leadership role owns the strategic direction, security, compliance, and engineering excellence across our collaboration platform, AI capabilities, and business applications. You will define the 3-5 year roadmap, lead enterprise-scale migrations, lead digital transformations, architect full-stack and AI solutions, and establish governance frameworks that enable secure, modern work and intelligent transformation.

• AI Solution Architecture & Copilot Leadership
• Copilot Solution Architecture
• Lead architectural design sessions to translate business requirements into comprehensive, secure, and scalable AI solution roadmaps
• Define governance models and "safety rails" for Copilot usage across Microsoft 365, Power, and custom applications
• Architect security and compliance measures (data loss prevention, access controls) using Microsoft Purview and Entra
• Design integration strategies between Copilot and enterprise systems (CRM, ERP, Microsoft Fabric, Synapse) using APIs and connectors
• Serve as technical bridge between executive stakeholders and delivery teams, communicating complex AI architecture decisions
• Develop AI adoption frameworks, usage policies, and ROI measurement strategies
• Copilot Solution Development Leadership
• Oversee development of custom Copilot agents, plugins, and connectors using Copilot Studio and Microsoft Graph API
• Establish development patterns for AI-powered workflows using Python, JavaScript, Power Shell, and SharePoint Framework (SPFx)
• Implement Dev Ops practices and CI/CD pipelines for AI solution lifecycle management
• Design secure data integration patterns enabling Copilot solutions to access enterprise data sources
• Lead troubleshooting and performance optimization of AI implementations
• Develop testing frameworks for AI solutions including prompt validation and output accuracy

• SharePoint Framework Solution Architecture
• Design enterprise-scale SPFx architecture including information architecture, site structures, and security models
• Translate complex business requirements into technical specifications and solution designs
• Define and enforce governance policies for SharePoint environments and custom solutions
• Architect integration patterns between SharePoint and enterprise systems (CRM, ERP, Power Platform, Azure services)
• Lead strategic planning for large-scale migrations from SharePoint on-premises to SharePoint Online
• Establish development standards, component libraries, and reusable patterns for SPFx solutions
• SharePoint Framework Development Oversight
• Guide development of custom SPFx solutions using Type Script, React, Node.js, and modern web technologies
• Establish patterns for custom web parts, extensions, application pages, and user interfaces
• Implement Graph API and RESTful service integrations following architectural designs
• Define testing methodologies and quality standards for SharePoint applications
• Oversee ongoing maintenance, support, and evolution of SharePoint solutions
• Ensure documentation standards for technical specifications and user guides

• Full-Stack Web Application Development:
  Design, architect, and oversee development of modern web applications using React, Vite, Type Script, and .NET Web API
• Backend Architecture:
  Lead design of scalable .NET Web APIs with Entity Framework Core, implementing clean architecture patterns
• Database Design:
  Architect relational database schemas (SQL Server, Postgre
  
  SQL, Azure SQL) with optimal performance and data integrity
• Frontend Excellence:
  Establish patterns for component libraries, state management, and responsive design systems
• Dev Ops Integration:
  Implement CI/CD pipelines for full-stack applications using Azure Dev Ops or Git Hub Actions
• Integration Patterns:
  Design secure integration patterns between custom applications and M365/AI services

• Enterprise Solution Architecture:
  Design complex Power Platform solutions spanning Power Apps, Power Automate, Power BI, and Power Pages
• Governance Framework Development:
  Establish enterprise governance for Power Platform including environment strategy, DLP policies, and solution lifecycle management
• Center of Excellence (COE)…