.Net Application Architect

Job: .Net Application Architect

Location: Harrisburg, PA

The PA PUC seeks an Application Architect with deep .NET and SQL Server expertise to design and modernize PUC applications and provide enterprise solution architecture across Microsoft and Java-based platforms, ensuring secure, scalable, maintainable and reusable application solutions. This role leads the adoption of AI-augmented development: advanced GitHub Copilot usage across teams while accelerating delivery while upholding security, WCAG accessibility, and regulatory compliance.

Key Responsibilities

• Architect secure, scalable .NET (C#/ ASP.NETCore) applications and SQL Server solutions using clean architecture, DDD, and performance optimization patterns.
• Develop enterprise solution architectures that span multiple applications, services, APIs, databases and integration platforms while ensuring long-term maintainability and scalability.
• Design data models, advanced T-SQL (stored procedures, indexing, partitioning, Query Store tuning), and HA/DR strategies for high-volume transactional systems.
• Define integration strategies for enterprise systems including REST APIs, messaging authentication, and data exchange between Microsoft, IBM and third-party platforms.
• Drive adoption of GitHub Copilot for .NET development), including custom instructions, prompt engineering, and AI-assisted refactoring and automated code reviews, documentation and testing.
• Produce architecture diagrams, and technical specs; lead design reviews; mentor teams on .NET patterns and Copilot best practices.
• Establish architecture standards, coding standards, reusable design patterns, and technical best practices across development teams.
• Ensure solutions meet Commonwealth IT security policies, WCAG 2.2 accessibility, PII protection, and zero-trust principles in a regulated utility environment.
• Lead the application modernization technical design efforts to migrate legacy PUC applications into cloud native applications.
• Develop modernization roadmaps, evaluate technical debt and recommend phased migration strategies.
• Design and implement modern software delivery practices including source control strategies, branching models, CI/CD pipelines, automated deployments, environment management and DevSecOps practices.
• Evaluate emerging technologies, frameworks and commercial software products to provide recommendations aligned with the PUC s long-term technology strategy.
• Provide technical leadership during project planning, estimation, POC s and architecture review sessions.

Required Skills:

• Application/Solution Architect on enterprise .NET and SQL Server projects in complex environments.
• Expert-level C#, ASP.NET Core, Entity Framework Core, Web API, and modern .NET practices (clean architecture, minimal APIs, DI, async/await patter
• Advanced SQL Server: complex T-SQL optimization, execution plans, indexing strategies, security (RLS, DDM), and Always On availability groups.
• Proven hands-on experience converted data from legacy systems to modernization application data models.
• Strong secure SDLC, Entra ID/managed identities, API security, and enterprise governance experience; excellent communication and stakeholder skills.
• Public sector, utilities, or regulated industry experience with strict compliance and accessibility mandates.
• Familiarity with legacy modernization, IBM FileNet/BAW; Microsoft Azure Solutions Architect Expert or equivalent certifications