Modern Stack Systems

Modern Stack Systems is an architect-led Salesforce and AI consultancy based in Chicago, serving companies across the US. Every project is led directly by Mac Nosek, a 15x certified Salesforce Technical Architect with more than 10 years on the platform. We work three ways. Fixed-scope launch packages for Sales Cloud, Service Cloud, Agentforce, Data 360, Experience Cloud and Financial Services Cloud, each with a written scope and go-live date before work starts. Managed services retainers for the changes and enhancements that come after go-live. And senior capacity by the hour for consulting firms and internal teams. On the AI side, we build Agentforce agents, custom AI agents and MCP servers that connect tools like Claude to your Salesforce data. Recent work includes AI workflows that turn service calls into tasks for a medical company, a family-wide activity timeline for a wealth management firm, and a Data 360 identity design for a global financial data company.