{"schemaVersion":"jobsearcher.job.v1","id":"019efbde9f7cd3d2b837e59b","url":"https://jobsearcher.com/jobs/019efbde9f7cd3d2b837e59b","canonicalUrl":"https://jobsearcher.com/jobs/019efbde9f7cd3d2b837e59b","title":".NET Full Stack Developer — Legacy Modernization & Cloud Migration","description":"*Job Overview*\n\nWe'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.*\n\n*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.\n\n*What You'll Actually Own*\n\n*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.\n\n*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:\n\n* Lead content, data, and workflow migrations from legacy SharePoint environments into *Google Cloud Platform (GCP) Government / Government Commercial Cloud (GCC / Assured Workloads)*.\n* Navigate strict government security boundaries, IAM, compliance controls (FedRAMP/NIST), and GCP storage architectures.\n* *Implement AI Search:* Replace default legacy SharePoint search with advanced AI-driven cognitive search using *Google Vertex AI Search / Enterprise Search* (vector search, semantic query processing, and RAG architectures).\n\n*3. Legacy Application Refactoring*\n\n* Unpack, analyze, and refactor complex legacy monoliths written in *older .NET Frameworks (Web Forms, WCF, MVC) and legacy VB code (VB.NET / VB6)*.\n* Re-architect legacy logic into modular, high-performance *modern .NET (NET 8+) APIs* with *React* frontends.\n\n*Responsibilities*\n\nTo be direct: this role is scoped for someone who has actually done this work before, not someone who can describe it. Applications lacking verifiable specifics below will not be considered.\n\n* *7+ years* professional full stack development experience, including *3+ years* with React (or a comparable modern SPA framework) paired with a .NET backend\n* Demonstrated, describable experience with *at least one* enterprise source-control migration (TFS/SVN/other → Git-based platform) where you owned the target repo/branching architecture — not just ran the migration tool\n* Hands-on experience with *Microsoft 365 GCC or GCC High*, including its security/compliance differences from commercial M365 (you should be able to speak to specific differences unprompted)\n* Working experience with at least one AI-powered enterprise search implementation (Azure AI Search, Copilot/Graph connectors, or similar)\n* Direct experience reading, maintaining, or migrating *VB.NET or classic ASP.NET/WebForms* code — this is a required skill, not a preference\n* Strong SQL Server skills (schema design, performance tuning, migration scripting)\n* *Must be prepared to complete a technical assessment: *a scoped architecture and a live technical discussion where you walk through actual reasoning on a comparable migration/refactor scenario. This is how we verify hands-on depth — resume claims alone won't move you forward.\n\n*Nice to Have*\n\n* Experience with Boomi or another iPaaS platform\n* Prior consulting/professional-services background across multiple concurrent clients\n* Familiarity with legal, financial services, or another regulated industry's compliance constraints\n\nPay: $100,000.00 - $145,000.00 per year\n\nApplication Question(s):\n* What specific challenge have you faced when migrating legacy TFC version control history to GitHub Git repositories, and how did you resolve it?\n* Describe one migration or refactor you personally architected — what was the before/after, and what tradeoff did you make that someone without hands-on experience wouldn't know to make?\n* What's one concrete difference between SharePoint permissions in commercial M365 vs. GCC that has bitten you or a team you worked with?\n\nEducation:\n* Bachelor's (Required)\n\nExperience:\n* .NET: 8 years (Preferred)\n* SharePoint: 7 years (Preferred)\n* CI/CD: 6 years (Preferred)\n\nAbility to Commute:\n* Los Angeles, CA 90071 (Preferred)\n\nWork Location: Hybrid remote in Los Angeles, CA 90071","company":"Brxio Software","rawCompany":"brxio software","city":"Los Angeles","state":"CA","isRemote":false,"isActive":false,"createdAt":"2026-08-22T15:16:54.032Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":".NET Full Stack Developer — Legacy Modernization & Cloud Migration","description":"*Job Overview*\n\nWe'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.*\n\n*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.\n\n*What You'll Actually Own*\n\n*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.\n\n*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:\n\n* Lead content, data, and workflow migrations from legacy SharePoint environments into *Google Cloud Platform (GCP) Government / Government Commercial Cloud (GCC / Assured Workloads)*.\n* Navigate strict government security boundaries, IAM, compliance controls (FedRAMP/NIST), and GCP storage architectures.\n* *Implement AI Search:* Replace default legacy SharePoint search with advanced AI-driven cognitive search using *Google Vertex AI Search / Enterprise Search* (vector search, semantic query processing, and RAG architectures).\n\n*3. Legacy Application Refactoring*\n\n* Unpack, analyze, and refactor complex legacy monoliths written in *older .NET Frameworks (Web Forms, WCF, MVC) and legacy VB code (VB.NET / VB6)*.\n* Re-architect legacy logic into modular, high-performance *modern .NET (NET 8+) APIs* with *React* frontends.\n\n*Responsibilities*\n\nTo be direct: this role is scoped for someone who has actually done this work before, not someone who can describe it. Applications lacking verifiable specifics below will not be considered.\n\n* *7+ years* professional full stack development experience, including *3+ years* with React (or a comparable modern SPA framework) paired with a .NET backend\n* Demonstrated, describable experience with *at least one* enterprise source-control migration (TFS/SVN/other → Git-based platform) where you owned the target repo/branching architecture — not just ran the migration tool\n* Hands-on experience with *Microsoft 365 GCC or GCC High*, including its security/compliance differences from commercial M365 (you should be able to speak to specific differences unprompted)\n* Working experience with at least one AI-powered enterprise search implementation (Azure AI Search, Copilot/Graph connectors, or similar)\n* Direct experience reading, maintaining, or migrating *VB.NET or classic ASP.NET/WebForms* code — this is a required skill, not a preference\n* Strong SQL Server skills (schema design, performance tuning, migration scripting)\n* *Must be prepared to complete a technical assessment: *a scoped architecture and a live technical discussion where you walk through actual reasoning on a comparable migration/refactor scenario. This is how we verify hands-on depth — resume claims alone won't move you forward.\n\n*Nice to Have*\n\n* Experience with Boomi or another iPaaS platform\n* Prior consulting/professional-services background across multiple concurrent clients\n* Familiarity with legal, financial services, or another regulated industry's compliance constraints\n\nPay: $100,000.00 - $145,000.00 per year\n\nApplication Question(s):\n* What specific challenge have you faced when migrating legacy TFC version control history to GitHub Git repositories, and how did you resolve it?\n* Describe one migration or refactor you personally architected — what was the before/after, and what tradeoff did you make that someone without hands-on experience wouldn't know to make?\n* What's one concrete difference between SharePoint permissions in commercial M365 vs. GCC that has bitten you or a team you worked with?\n\nEducation:\n* Bachelor's (Required)\n\nExperience:\n* .NET: 8 years (Preferred)\n* SharePoint: 7 years (Preferred)\n* CI/CD: 6 years (Preferred)\n\nAbility to Commute:\n* Los Angeles, CA 90071 (Preferred)\n\nWork Location: Hybrid remote in Los Angeles, CA 90071","datePosted":"2026-08-22T15:16:54.032Z","dateModified":"2026-08-22T15:16:54.032Z","hiringOrganization":{"@type":"Organization","name":"Brxio Software","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Los Angeles","addressRegion":"CA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"019efbde9f7cd3d2b837e59b"},"url":"https://jobsearcher.com/jobs/019efbde9f7cd3d2b837e59b"}}