Senior Lead Full-Stack .NET Developer

ASSYST is seeking a Senior Lead Full-Stack .NET Developer to support our client project in Tallahassee, Florida
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The position is Onsite.

• Must have advanced to expert level knowledge in designing and developing scalable applications and integrating systems.
• Candidates with demonstrated production experience building and deploying full-stack applications on the .NET / C# / Azure / React technology stack will be given strong preference.
• Experience with Azure cloud services for application hosting, identity, storage, and integration is highly desirable.

• Design, develop, test, deploy, and support custom full-stack applications that automate client’s operations impacted by PALM.
• Participate directly in business discovery sessions with client’s product owners and business analysts to capture first‑hand business understanding and translate it into working software.
• Partner with the client’s technical lead on solution architecture, technical design decisions, code review, and coding standards.
• Deliver production-ready features end‑to‑end — analysis, design, build, unit testing, deployment, and post‑deployment support — within committed release timelines.
• Provide hands‑on production support and incident triage for client‑owned custom applications on a rotational basis, including root‑cause analysis and resolution of production issues.
• Design and implement RESTful APIs and integrations between client’s custom applications, Florida PALM, FM systems, and other enterprise data sources.
• Work with relational data models (Azure SQL Server and Snowflake) to implement and maintain solutions that support client’s reporting, analytics, and operational reporting needs.
• Drive iterative delivery, UI/UX improvements, and code optimization; collaborate with the technical lead to ensure consistency in coding standards, documentation, and deployment practices.
• Develop and maintain application documentation, deployment runbooks, and operational handover materials in accordance with the Department's standards.
• Coach and mentor team members on full‑stack development practices where appropriate, and collaborate with client.

• Advanced knowledge of Object‑Oriented Programming and its application in building scalable, maintainable full‑stack solutions.
• Strong experience with back‑end development in Microsoft .NET (C#, ASP.NET Core), RESTful APIs, and integration with relational databases such as Azure SQL Server.
• Demonstrated experience developing and deploying cloud‑based applications in Microsoft Azure, leveraging Azure services for hosting, identity, storage, integration, scalability, and reliability.
• Skill in creating seamless user experiences, including UI/UX best practices, accessibility standards (WCAG), and performance optimization for web applications.
• Experience with relational database design and development, including writing efficient queries and working with ORM frameworks such as Entity Framework.
• Skill in translating business requirements and wireframes into functional, user‑friendly applications, ensuring usability and responsiveness across devices.
• Familiarity with data exchange formats (JSON, XML) and integration with APIs for dynamic, interactive interfaces.
• Knowledge of agile development methodologies, including iterative design, rapid prototyping, and continuous delivery practices.
• Ability to create and execute test plans, including unit, functional, and UI testing, and ensure quality assurance throughout the development lifecycle.
• Demonstrated ability to deliver production‑ready features within committed timelines and to provide post‑deployment production support.
• Strong communication and collaboration skills, with the ability to work closely with business stakeholders, business analysts, technical leads, and QA team members to deliver high‑quality outcomes.
• Ability to manage multiple priorities, work independently, and contribute effectively as part of a small, high‑trust cross‑functional team.
• Ability to integrate research and best practices into problem avoidance and continuous improvement.
• Ability to display professionalism in dealing with all levels of management…