Need .Net Application Architect in Harrisburg, PA - Onsite

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/Desired Skills

Software engineering Required / Desired Amount of Experience Years 8 N/A Application/Solution Architect on enterprise .NET and SQL Server projects in complex environments. Required 4 Expert-level C#, ASP.NET Core, Entity Framework Core, Web API, and modern .NET practices (clean architecture, minimal APIs, DI, async/await pattern) Required N/A Advanced SQL Server: complex T-SQL optimization, execution plans, indexing strategies, security (RLS, DDM), and Always On availability groups. Required N/A Daily professional experience with GitHub Copilot for .NET/C# development, including advanced configuration and team enablement. Required N/A Proven hands-on experience converting data from legacy systems to modernization application data models. Required N/A Strong secure SDLC, Entra ID/managed identities, API security, and enterprise governance experience; excellent communication and stakeholder skills. Required N/A Public sector, utilities, or regulated industry experience with strict compliance and accessibility mandates. Required N/A Familiarity with legacy modernization, IBM FileNet/BAW; Microsoft Azure Solutions Architect Expert or equivalent certifications Required N/A Bachelor’s in Computer Science, Information Systems, or equivalent Required N/A

Sarum LLC

68-60 Austin Street, Suite 403,
Forest Hills, NY 11375
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