.NET Application Architect

Job Summary

We are seeking an experienced Application Architect / Solution Architect with deep expertise in .NET, C#, ASP.NET Core, SQL Server, enterprise application architecture, legacy modernization, and secure software delivery.

The selected candidate will be responsible for designing and modernizing enterprise applications, developing scalable architecture solutions, and providing technical leadership across Microsoft and Java-based platforms. This role requires strong hands-on technical knowledge, architecture leadership, and the ability to guide development teams in building secure, maintainable, accessible, and reusable application solutions.

The candidate will also lead the adoption of AI-augmented development practices, including advanced use of GitHub Copilot for .NET/C# development, AI-assisted refactoring, automated code reviews, documentation, and testing.

Key Responsibilities

Design and architect secure, scalable, and maintainable enterprise applications using C#, ASP.NET Core, Entity Framework Core, Web API, SQL Server, and modern .NET practices.

Develop enterprise solution architectures across multiple applications, services, APIs, databases, and integration platforms.

Apply clean architecture, domain-driven design, dependency injection, async/await patterns, and reusable design practices.

Design and optimize SQL Server solutions, including advanced T-SQL, stored procedures, indexing strategies, execution plans, Query Store tuning, partitioning, and performance optimization.

Support high-availability and disaster recovery strategies using SQL Server technologies such as Always On availability groups.

Lead technical design efforts for modernizing legacy applications into cloud-native, secure, and scalable application platforms.

Convert and migrate data from legacy systems into modern application data models.

Define integration strategies for enterprise systems, including REST APIs, messaging, authentication, and secure data exchange between Microsoft, IBM, and third-party systems.

Drive adoption of GitHub Copilot across .NET development teams, including custom instructions, prompt engineering, AI-assisted refactoring, automated testing, documentation, and code review practices.

Produce architecture diagrams, technical specifications, design documents, and modernization roadmaps.

Lead architecture reviews, design sessions, proof-of-concepts, project planning, and technical estimation activities.

Establish architecture standards, coding standards, reusable design patterns, CI/CD practices, branching models, automated deployments, and DevSecOps processes.

Ensure solutions comply with IT security policies, WCAG 2.2 accessibility standards, PII protection requirements, zero-trust principles, and regulatory compliance expectations.

Evaluate emerging technologies, frameworks, and commercial software products and provide recommendations aligned with long-term technology strategy.

Mentor development teams on .NET architecture patterns, secure coding practices, modernization strategies, and AI-assisted development best practices.

Required Skills and Experience

Minimum 8 years of software engineering experience.

Minimum 4 years of experience as an Application Architect, Solution Architect, or Technical Architect on enterprise .NET and SQL Server projects.

Expert-level experience with C#, ASP.NET Core, Entity Framework Core, Web API, and modern .NET development practices.

Strong experience with clean architecture, domain-driven design, dependency injection, minimal APIs, async/await patterns, and enterprise application design.

Advanced SQL Server experience, including complex T-SQL optimization, stored procedures, execution plans, indexing strategies, database security, and performance tuning.

Experience with SQL Server security features such as row-level security, dynamic data masking, and high-availability solutions such as Always On availability groups.

Hands-on experience modernizing legacy applications and migrating legacy systems to modern application architectures.

Proven experience converting data from legacy systems into modern application data models.

Daily professional experience using GitHub Copilot for .NET/C# development.

Experience enabling teams to use GitHub Copilot, including prompt engineering, AI-assisted code review, documentation, testing, and refactoring.

Strong knowledge of secure SDLC, API security, enterprise governance, Entra ID, managed identities, and DevSecOps practices.

Experience designing CI/CD pipelines, source control strategies, branching models, automated deployments, and environment management practices.

Strong communication skills with the ability to lead technical discussions, document architecture decisions, and work with technical and non-technical stakeholders.

Preferred / Highly Desired Experience

Experience working in public sector, utilities, healthcare, finance, or other regulated environments.

Experience with WCAG 2.2 accessibility requirements and compliance-driven application development.

Experience with Microsoft Azure cloud-native application architecture.

Familiarity with IBM FileNet, IBM BAW, or similar legacy enterprise platforms.

Microsoft Azure Solutions Architect Expert certification or equivalent certification is preferred.

Education

Bachelor’s degree in Computer Science, Information Systems, Engineering, or a related field, or equivalent professional experience.

Ideal Candidate Profile

The ideal candidate is a senior-level .NET Application Architect / Solution Architect who can combine hands-on technical expertise with enterprise architecture leadership. This person should be comfortable designing modern application platforms, optimizing SQL Server solutions, guiding modernization efforts, mentoring developers, and helping teams adopt secure and AI-augmented development practices.

This is a leadership-level technical role requiring strong architecture judgment, deep .NET and SQL Server expertise, excellent communication skills, and experience working in secure, regulated, and compliance-focused environments.