AI + .NET Full Stack Developer (SharePoint) — Legacy Modernization & Cloud Migration

Job Overview

We're looking for a senior, hands-on .NET Full Stack Developer to lead three concurrent modernization initiatives: enterprise source control migration, a SharePoint-to-GCC cloud migration with AI-powered search, and legacy application refactoring. This is not a maintenance role — you will be designing the target architecture, not just executing a checklist.

Location

This role requires regular onsite/hybrid presence with client teams and secure environments. Candidates must currently reside in, or be immediately willing to relocate at their own expense to, one of the following metro areas: New York City, Boston, Washington DC, Chicago, Los Angeles, or San Francisco. Remote-only applicants will not be deprioritized.

What You'll Actually Own

1. Source Control Modernization: TFS → GitHub

You will not simply move repositories. You will design and document the target GitHub architecture from scratch: repo structure and ownership model, branching strategy, environment promotion flow, CODEOWNERS and required-reviewer policy, secrets management, and CI/CD pipeline design. Deliverable: a written architecture and migration runbook another engineer could execute from.

2. SharePoint → GCC Cloud Migration

Migrate SharePoint content and permissions into a Google Cloud Platform (GCP) Government / Government Commercial Cloud (GCC / Assured Workloads)., correctly handling the security model differences, permission inheritance quirks, and compliance boundaries that don't exist in commercial M365. You will also evaluate and implement an AI-powered search layer (e.g., Copilot/Graph-based semantic search, Azure AI Search, or equivalent) to replace native SharePoint search — this is a stated priority, not a stretch goal:

• Lead content, data, and workflow migrations from legacy SharePoint environments into Google Cloud Platform (GCP) Government / Government Commercial Cloud (GCC / Assured Workloads).
• Navigate