SeniorArchitect-GCI

# Senior Solutions Architect — Governance, Compliance, & Insights ## ## Why Join Us? The interesting work in enterprise security has moved inside the organization. AI agents are creating new insider risk and compliance obligations every day. Data is sprawling faster than the controls around it. At Mimecast, our product lines sit where all of that converges. This is an architecture role reporting directly to an Enterprise Architect (EA). You’ll work alongside other Solutions Architects on the team to shape how the product evolves, how it integrates with the rest of Mimecast, and how it stays ahead of where the market is going. The Solutions Architect role at Mimecast sits closer to the product problem. Discovery, shaping, and contract design now drive more of the value than detailed component design. If you primarily want to be a heads-down individual contributor, this isn’t the right seat. If you want to shape what gets built and own the structural decisions that make a product line move fast with quality, it is. ## AI-First Architecture at Mimecast Mimecast is an AI-First engineering organization. We expect this role to use AI development tools daily — for design exploration, prototyping, documentation, code review, and analysis. This is not optional and it is not bolt-on; it is how we work. You will also be designing systems that incorporate AI directly. This product line is actively building agent-aware detections and AI-driven enrichment, and contributing to Mimecast’s broader AI-powered risk products. Comfort designing with — and for — LLMs, agents, and modern AI architectures is core to this job, not a side interest. We treat architecture artifacts — ADRs, AGENTS.md files (agent-readable repo context), and data contracts — as machine-readable context, not documentation. They’re the substrate that humans and agents both operate inside, and they capture the reasoning behind design decisions — the why, not just the what. ## The Opportunity This is a leadership ro