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Sr .Net Architect / Developer

eSolutionsFirst, LLC

Vienna, VA

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JOB DETAILS
JOB TYPE
Temporary, Contractor, Full-time
SKILLS
ADO.NET Entity Framework, Application Programming Interface (API), Architectural Services, Artificial Intelligence (AI), CSS (Cascading Style Sheet), Code Reviews, Contract Creation, Database Design, Database Technology, ERP (Enterprise Resource Planning), GitHub, Instrumentation, JavaScript, Machine Tool, Metrics, Microsoft .NET, Microsoft C# .NET (C Sharp .NET), Microsoft Dynamics NAV, Microsoft SQL Server, Microsoft Windows Azure, Network Routers, OAuth, Production Schedule, Query Optimization, REST (Representational State Transfer), React.js, SLICE (Simulation Language with Integrated Circuit Emphasis), SQL (Structured Query Language), SWAGGER OAS, Semantic Reasoner, Software Development, System Integration (SI), Test Automation, Testing
LOCATION
Vienna, VA
POSTED
Today
Sr .Net Architect / Developer

12 Months contract – Extension long term Contract

Location:   Vienna, VA   

Job description:

Architecture & Design:

  • Own the end-to-end solution architecture across Production Scheduling, Production Execution, and Allocation Rules Engine modules
  • Define and enforce architectural patterns: three-tier (Next.js → Azure Functions → Azure SQL), RTK Query slice conventions, schema name spacing, and DEP integration contracts
  • Lead database schema design (SSDT projects, Azure SQL) and API contract definition (OpenAPI/Swagger) across all modules
  • Architect real-time subsystems: SignalR hub for check-weigher events, Azure Service Bus Premium queuing for NAV output posting, and retry/dead-letter strategies
  • Design the Allocation Rules Engine evaluation pipeline for sub-200ms P99 latency and batch-evaluation throughput

Required skills :

  • 9+ years of software development experience, with 3+ years in a Solution Architect or Lead Architect role
  • Deep expertise in Azure-native architectures: Azure Function Apps (isolated worker model), Azure SQL, Azure Service Bus, Azure AD / MSAL (OAuth2/OIDC)
  • Strong C# .NET 8 — Azure Functions, Entity Framework Core, xUnit testing, REST API design
  • Strong React / TypeScript / Next.js 15 — App Router, RTK Query, Tailwind CSS, component library patterns
  • Azure SQL / SQL Server schema design — SSDT projects, query optimization, multi-tenant schema isolation
  • Experience integrating with ERP systems (Microsoft Dynamics NAV / Business Central strongly preferred)
  • Proven experience designing real-time systems (SignalR, WebSockets, or equivalent)
  • OpenAPI/Swagger specification authoring and API contract-first development
  •  

AI & Tooling

  • Hands-on experience with Claude Code, GitHub Copilot, or equivalent AI coding assistants in production development workflows
  • Demonstrated ability to prompt LLMs effectively using structured specifications and to critically evaluate generated output
  • Familiarity with AI-assisted test generation and automated code review tooling

Architecture & Process:

  • Track record delivering complex, multi-module web applications end-to-end
  • Experience with message-driven integration patterns (Azure Service Bus, event-driven architecture, dead-letter handling)
  • Observability and monitoring: Application Insights instrumentation, custom metrics, alerting design

About the Company

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eSolutionsFirst, LLC

INDUSTRY
Internet Services

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