Duration: 3 months to start
Job Description
- The Senior .NET Developer - Modernization Lead is responsible for driving architectural evolution, technical modernization, and delivery resilience across enterprise C#/.NET applications supporting critical business operations.
- This role partners closely with Business Analysts, Product Owners, and technical leadership to design and implement secure, scalable, and maintainable solutions aligned with agency objectives.
- The position provides senior-level technical direction within an Agile environment, strengthens architectural standards, reduces legacy system risk, and improves system performance and operational reliability.
- The Senior .NET Developer - Modernization Lead serves as a senior technical voice within the team.
- They influence design decisions, guide modernization strategy, and help distribute institutional knowledge to reduce single points of failure.
- Lead architectural design, development, and modernization efforts across C#/.NET applications.
- Provide technical ownership for modernization initiatives, including legacy refactoring, cloud-readiness, and system resiliency improvements.
- Partner with Business Analysts and Product Owners to translate complex business requirements into scalable technical solutions.
- Establish and enforce architectural standards, coding guidelines, and design patterns across the application stack.
- Drive reduction of technical debt and systemic risk through structured remediation planning.
- Guide cross-team technical coordination where services or integrations intersect.
- Mentor engineers through design reviews, code reviews, and modernization best practices.
- Design, implement, and govern secure, scalable RESTful APIs and backend services.
- Lead root-cause analysis of complex production issues and implement durable corrective solutions.
- Collaborate with QA and DevOps to improve automation, release quality, observability, and deployment confidence.
- Contribute to operational readiness planning, monitoring strategies, and production stability efforts.
- Identify and proactively mitigate architectural and delivery risks.
- Bachelor’s degree in Computer Science, Information Systems, Engineering, or related technical field, or
- equivalent professional experience.
- 7+ years of professional experience developing enterprise applications using C# and .NET (Framework and .NET Core / .NET 8/9+ preferred).
- Demonstrated experience leading or owning architectural decisions in complex or legacy environments.
- Strong expertise with ASP.NET MVC and API-driven architectures.
- Advanced experience with Microsoft SQL Server (2012+), including performance tuning, indexing strategies, and query optimization.
- Demonstrated success modernizing legacy systems, including refactoring monolithic architectures and improving maintainability.
- Experience designing secure, scalable RESTful APIs with strong authentication and authorization patterns (JWT, OAuth, claims-based security).
- Experience implementing structured logging, monitoring, and observability solutions in production environments.
- Strong knowledge of dependency injection, middleware pipelines, async/await, background services, and distributed processing.
- Working knowledge of SPA architecture and modern frontend frameworks (Angular or React).
- Experience influencing technical standards or mentoring developers within an Agile environment.
- Proficiency with Git-based source control and CI/CD automation.
- Demonstrated ability to identify systemic risk and deliver durable, maintainable technical solutions.
- Experience operating in matrixed, cross-agency, or public-sector environments.
- Experience leveraging LLMs and automation tools to improve engineering productivity.
- Familiarity with cloud platforms and cloud-native architectures.
Special Requirements and/or Specifications for the Posting:
- Demonstrable senior-level experience modernizing legacy .NET systems (.NET Core/6+/Cloud)
- Proven ownership, autonomy, and delivery accountability
- Advanced SQL Server performance tuning (indexing, execution plans, deadlock analysis)
- Experience in public-sector / regulated environments (CJIS, HIPAA, FERPA, SOC2, etc.) preferred
- Ability to lead technical design and mentor junior developers
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