Senior Principal Systems Engineer

TriNet 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 features such as payroll processing, human capital consulting, employment law compliance and employee benefits, including health insurance, retirement plans and workers’ compensation insurance.  
 
TriNet has a nationwide presence and an experienced executive team. Our stock is publicly traded on the NYSE under the ticker symbol TNET. If you’re passionate about innovation and making an impact on the large SMB market, come join us as we power our clients’ business success with extraordinary HR.  
 
Don't meet every single requirement? Studies have shown that many potential applicants discourage themselves from applying to jobs unless they meet every single requirement. TriNet always strives to hire the most qualified candidate for a particular role, ensuring we deliver outstanding results for our small and medium-size customers. So, if you're excited about this role but your past experience doesn't align perfectly with every single qualification in the job description, nobody’s perfect – and we encourage you to apply. You may just be the right candidate for this or other roles.  
 
A Brief Overview 
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. This is a hands-on technical leadership position requiring deep expertise across M365, AI/ML platforms, full-stack development, and exceptional cross-functional influence. 
 
What you will do 

• 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 Platform, and custom applications 
• Architect security and compliance measures (data loss prevention, access controls) using Microsoft Purview and Entra ID 
• 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, PowerShell, and SharePoint Framework (SPFx) 
• Implement DevOps 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 Architecture & Development Leadership 

• 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 TypeScript, 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 Solution Architecture & Development 

• Full-Stack Web Application Development: Design, architect, and oversee development of modern web applications using React, Vite, TypeScript, 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, PostgreSQL, Azure SQL) with optimal performance and data integrity 
• Frontend Excellence: Establish patterns for component libraries, state management, and responsive design systems 
• DevOps Integration: Implement CI/CD pipelines for full-stack applications using Azure DevOps or GitHub Actions 
• Integration Patterns: Design secure integration patterns between custom applications and M365/AI services  

Power Platform Solution Architecture & Governance 

• 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) Leadership: Define and lead the Power Platform COE, establishing best practices and citizen developer enablement 
• Solution Delivery Oversight: Architect enterprise-grade Power Platform solutions with focus on scalability, security, and maintainability 
• ALM Implementation: Implement Application Lifecycle Management processes using Azure DevOps and solution packages 
• Performance Optimization: Design performance optimization patterns for Power Apps and Power Automate solutions 

Enterprise Architecture & Strategic Planning 

• Architect long-term technical strategy for Microsoft 365 ecosystem with AI-first design principles 
• Develop enterprise architecture blueprints, reference architectures, and integration patterns 
• Ensure architectural alignment with Zero Trust principles, modern identity, and compliance requirements 
• Partner with CIO/CTO to shape 3-5 year digital workplace and AI transformation strategy 
• Provide authoritative guidance on Microsoft's product direction and emerging technologies 

Large-Scale Transformation & Migration Leadership 

• Lead multi-year, business-critical migrations including SharePoint on-premises to Online, Slack→Teams, and tenant consolidations 
• Design migration strategies, risk mitigation plans, and cutover procedures 
• Select and oversee migration tooling (ShareGate, AvePoint, PowerShell automation) 
• Manage cross-functional engineering teams during transformation initiatives 
• Communicate progress and risks to senior leadership and business stakeholders 

Security, Compliance & Governance 

• Define and implement DLP policies across M365, AI solutions, and custom applications 
• Design information protection strategies including sensitivity labeling and retention policies 
• Ensure compliance with SOX, SOC 2, ISO 27001, HIPAA, and other regulatory frameworks 
• Serve as technical lead during security audits and assessments 
• Establish governance frameworks for AI usage, data handling, and solution development 

Identity & Access Engineering 

• Architect Conditional Access policies for internal, guest, partner, and AI system access 
• Design and implement MFA, risk-based access, and device trust requirements 
• Lead enterprise rollout of Entra ID Governance and automated lifecycle management 
• Architect secure identity patterns for AI agents and automated workflows 

Digital Workplace Platform Architecture & Leadership 

• Simpplr Intranet as a Service Platform Expertise 
• Architect and govern enterprise-wide Simpplr intranet implementation as the central digital employee experience platform 
• Design and implement comprehensive governance models for Simpplr including content architecture, site management, user permissions, and lifecycle policies 
• Lead integration strategy between Simpplr and Microsoft 365 ecosystem (Teams, SharePoint, Viva Connections) for seamless employee experience 
• Develop and enforce governance for Simpplr analytics, AI features, and engagement tools 
• Design custom widget development and integration patterns using Simpplr's extensibility framework 
• Lead Simpplr platform upgrades, feature adoption strategies, and performance optimization 
• Establish content migration strategies from legacy intranets to Simpplr platform 
• Design employee journey mapping and personalization strategies within Simpplr 

Enterprise Integration Architecture

• Oracle HCM to Informatica HIP to AWS Integration Expertise 
• Architect and govern end-to-end integration between Oracle HCM, Informatica HIP (Intelligent Health Platform), and AWS services 
• Design secure, scalable integration patterns for sensitive HR and healthcare data flows 
• Lead technical design for real-time and batch data synchronization between Oracle HCM, Informatica HIP, and AWS data lakes/warehouses 
• Design and implement error handling, monitoring, and alerting strategies for critical integration pipelines 
• Establish data lineage, quality controls, and audit trails across the integration ecosystem 
• Optimize integration performance and scalability for global enterprise operations 
• Develop disaster recovery and business continuity plans for critical HR/healthcare integrations 
• Performs other duties as assigned 
• Complies with all policies and standards 

Education Qualifications

• Bachelor's Degree in Computer Science, Information Systems, or related field (Masters preferred) required  

Experience Qualifications

• Typically 20+ years Relevant work experience in Systems Engineering or a similar role, preferably in a large-scale environment. required  

Skills And Abilities

• Technical Expertise  
• AI & Copilot Solutions (New)  
• 3+ years architecting and implementing AI solutions, specifically Microsoft Copilot for M365 and Power Platform  
• Experience with Copilot Studio, Graph API for AI, and custom agent development  
• Knowledge of AI governance, prompt engineering, and LLM integration patterns  
• Experience with AI security controls and compliance requirements  
• SharePoint Framework (Enhanced)  
• 5+ years architecting and developing SharePoint solutions with 3+ years focused on SPFx  
• Expert knowledge of SPFx development using TypeScript, React, Node.js, and PnPjs  
• Experience with SharePoint migrations (on-premises to Online) and modernization strategies  
• Knowledge of Graph API integration, SharePoint taxonomy, and information architecture  
• M365 & Cloud  
• 10+ years enterprise systems engineering with 5+ years focused on Microsoft 365  
• Expert-level knowledge of Teams, SharePoint, OneDrive, Exchange, and Power Platform  
• Deep hands-on experience with Entra ID, Conditional Access, and identity governance  
• Full-Stack Development  
• 5+ years architecting enterprise web applications with React, TypeScript, .NET Web API, and Entity Framework Core  
• Experience with SQL Server, PostgreSQL, or Azure SQL database design  
• Power Platform  
• 3+ years architecting enterprise Power Platform solutions and governance frameworks  
• Simpplr Platform  
• 3+ years architecting and governing Simpplr Intranet as a Service Implementations  
• Experience with Simpplr governance, analytics, AI features, and extensibility framework  
• Knowledge of Simpplr integration patterns with Microsoft 365 and enterprise systems  
• Leadership & Strategic Skills  
• Executive-level communication with ability to translate complex AI/technical concepts to business value  
• Proven ability to influence without authority across all organizational levels  
• Strategic thinking with ability to develop 3-5 year technology and AI adoption roadmaps  
• Strong vendor management and negotiation skills  
• Exceptional problem-solving and incident management capabilities  
• Mentoring and coaching experience with senior engineers across multiple domains  
• Project and program management proficiency for large-scale transformations  
• Technical Decision Authority  
• Final technical authority on AI solution architecture, governance, and implementation patterns  
• Approval authority for SharePoint Framework designs and development standards  
• Architecture review and approval for custom .NET/React applications and integrations  
• Decision authority on Copilot implementation strategy and usage policies  
• Governance and standards definition for all M365, AI, Simpplr, and custom solution development  
• Performance Metrics  
• Successful deployment and adoption of AI solutions with measurable business impact  
• Successful deployment and adoption of Simpplr platform with measurable employee engagement improvements  
• Reduction in security incidents and compliance violations across all platforms  
• Improvement in platform availability, performance, and user satisfaction metrics  
• Successful migration of legacy systems to modern platforms  
• Establishment and adoption of comprehensive governance frameworks  
• Cost optimization through license management and solution rationalization  
• Development team productivity improvements through standardized patterns and tools  

Licenses And Certifications

• Microsoft Certifications: SC-400, MS-700, PL-600 (Power Platform), AI-102 (Azure AI Engineer), plus Copilot-specific certifications as available  
• Development Certifications: Microsoft Certified: Azure Developer Associate  
• Architecture Certifications: Microsoft Certified: Azure Solutions Architect Expert preferred  
• Security Certifications: CISSP, CISM, or equivalent security certification preferred  

Work Environment

Work in clean, pleasant, and comfortable office or home setting. The work environment characteristics described here are representative of those an employee encounters while performing the essential functions of this job. Reasonable accommodations may be made to enable persons with disabilities to perform the essential functions.  

The preferred location for this role is Atlanta, GA, and the salary range for this location is $122,200.00 to $268,900.00.  All qualified external applicants will be considered for an in-office role, based in Atlanta.  All qualified internal candidates are encouraged to apply and consider relocation to Atlanta and may be considered for remote hire at the company’s discretion. The candidate’s final salary offer will be based on the candidate’s skills, education, work location and experience.

A candidate’s compensation may also include bonuses consistent with TriNet’s corporate bonus plan.

Additionally, subject to applicable eligibility requirements, TriNet offers permanent full-time employees a variety of benefits including medical, dental, and vision plans, life and disability insurance, a 401(K) savings plan, an employee stock purchase plan, eleven (11) Company observed holidays, PTO and a comprehensive leave program.  Please click the following link for detailed information about our benefits offerings:  https://www.trinet.com/documents/blt5b61a1040aae1904  

Please Note: TriNet reserves the right to change or modify job duties and assignments at any time. The above job description is not all encompassing. Position functions and qualifications may vary depending on business necessity. 
 
TriNet is an Equal Opportunity Employer and does not discriminate against applicants based on race, religion, color, disability, medical condition, legally protected genetic information, national origin, gender, sexual orientation, marital status, gender identity or expression, sex (including pregnancy, childbirth or related medical conditions), age, veteran status or other legally protected characteristics. Any applicant with a mental or physical disability who requires an accommodation during the application process should contact recruiting@trinet.com to request such an accommodation.