Full-Stack Lead Developer (.NET Angular)

We have an urgent opportunity for a Lead Developer (C#, .NET) in Tempe, AZ. This position is onsite (hybrid) 3 - 4 days per week. This position is Contract-To-Hire. After ~ 6 months the client will hire Full-Time which will include salary + bonus + full benefits. The client wants someone looking for very long-term to grow within the company. We cannot use vendors/3rd party under any circumstance (even on W2) US Citizen or Green Card only Job Summary: The Lead Developer is responsible for coaching, reviewing, and delegating work to lower-level professionals. Leads the development efforts within the team and has an expert understanding of critical software development efforts across the team and supports the software development function within the organization. Responsible for developing, coding, testing, debugging, and documenting a broad range of highly complex applications, programs, websites, databases and systems. Considers the current and future business environment of systems bringing enterprise-level perspective to designs and solutions. Manages large projects or processes with limited oversight from leadership. Serves as a high-level subject matter expert for the application, for technologies and integrations, or business processes. Primary Job Responsibilities Conducts a full range of programming tasks including program design, development, debugging, estimating, unit testing, and documentation for a variety of applications, systems, databases, or websites. Serves as a technical subject matter expert through all phases of system analysis and development. Collaborates with team leadership and architecture to design and develop well-integrated, scalable, enterprise-level solutions that meet present and future business needs. Guides the development team in applying these designs and patterns consistently across solutions. Works with team leadership and architecture to set, track, and support delivery and development goals for individual team members. Leads or contributes to the technical design of complex features, ensuring alignment with architectural standards and long-term maintainability. Contributes to the evolution of system architecture, including decomposition of monolithic applications into microservices and API-first solutions. Designs and implements event-driven solutions leveraging Azure services such as Service Bus, Event Grid, or similar messaging platforms. Applies modern engineering practices including test-driven development (TDD), clean architecture principles, and automated testing strategies. Determines testing methodology and manages the development and execution of comprehensive test plans including identifying key areas of application requiring stress or load testing. Reviews application modules and ensures compliance with application architecture standards and development best practices. Implements application observability, monitoring, and proactive alerting strategies including structured logging and tracing. Provides ongoing maintenance of applications, systems, databases, or websites. Provides third-level application support including on-call (after hours, weekends, holidays) for priority issues. Troubleshoots highly complex production issues, serving as escalation point. Evaluates and follows through on issues and problems until resolved. Partners with architecture and leadership to identify opportunities for system improvements, modernization, and technical debt reduction. Proactively collaborates with architecture leadership to contribute to application architecture standards and patterns. Leads knowledge sharing and promotes shared understanding amongst the development team. Identifies and leads process improvement efforts within the development team to improve quality, delivery, and effectiveness. Provides mentoring, training, procedural and technical guidance to less experienced staff. This includes documentation of technical designs and decisions and assuring technical knowledge is shared with all development team members. Participates in code reviews and contributes to establishing and reinforcing development standards. Champions development best practices, methods, standards, and processes across the team. Supports the evaluation and selection of new tools, frameworks, and vendor software solutions. Follows secure coding standards and addresses security scan alerts. Perform other duties as assigned. Organizational Impact: Works to achieve day-to-day objectives with major impact on the area of responsibility. Contributes to the development of goals the area and planning efforts (budgets, operational plans, etc.). Manages large projects or processes with moderate impact on the achievement of sub-family results. Work is performed with limited oversight. Typically responsible for coaching, reviewing and delegating work to lower-level professionals. Provides measurable input to new products, processes or standards in operational plans in order to implement operational objectives. Leadership