Job Title:  Senior Full Stack .NET Developer

Industry: State Government, Corrections & Court System 

Job Overview:

Theoris Services is seeking a Senior Full Stack .NET Developer to support the ongoing development and maintenance of a statewide jail management system. This application supports critical processes across the criminal justice system, including jail operations, court-related workflows, and integrations with law enforcement agencies. This role will primarily focus on application support, troubleshooting, resolving a backlog of development work, and building utilities and administrative tools to improve application support and maintenance. The successful candidate will become a key technical resource for the application and will work closely with an experienced technical lead and development team. This is an excellent opportunity for a senior developer who enjoys solving complex technical problems, working with established enterprise applications, and taking ownership of backend development and system integrations.

Responsibilities:

• Provide ongoing application support, troubleshooting, defect resolution, and maintenance for a statewide jail management system.

• Investigate and resolve technical issues across application components, APIs, integrations, and database layers.

• Develop utilities, administrative tools, and supporting functionality to improve application support and operational efficiency.

• Build and maintain backend services, APIs, and integrations using modern .NET technologies.

• Write, optimize, and maintain complex SQL Server queries, stored procedures, and database operations.

• Contribute to full stack development using .NET and Angular or Vue.js, with a stronger emphasis on backend and server-side development.

• Support application deployment and containerized environments, including Kubernetes where applicable.

• Collaborate with the technical lead, architects, and developers to understand application functionality, troubleshoot issues, and implement effective solutions.

• Work within an Agile development environment using two-week sprints.

• Independently investigate problems, ask thoughtful questions, and take ownership of assigned work.

Requirements: 

• 5–7+ years of professional software development experience, with the ability to work at a senior level and contribute with minimal supervision.

• Strong hands-on experience with C# and .NET Core, including backend application development.

• Experience with Microsoft .NET Framework and maintaining existing enterprise applications.

• Strong experience with Microsoft SQL Server, including complex queries, database troubleshooting, and performance optimization.

• Professional experience with Angular or Vue.js; Angular is preferred, but Vue.js is an acceptable alternative.

• Experience developing and supporting APIs, server-side applications, and system integrations.

• Ability to work independently, diagnose complex issues, and manage competing support and development priorities.

• Strong communication skills, including the ability to ask questions, collaborate with technical colleagues, and explain technical issues clearly.

• A stable employment history demonstrating a reasonable commitment to previous roles.

Preferred Requirements: 

• Experience with Kubernetes and containerized application environments.

• Experience supporting or enhancing large, established enterprise applications.

• Familiarity with CI/CD pipelines, application deployments, and production support practices.

• Experience working with government, corrections, Department of Correction (DOC), court systems, law enforcement, or other legal and criminal justice applications.

• Experience working in Agile/Scrum environments with two-week sprint cycles.

Technical Environment: 

• C#

• .NET Core / modern .NET

• .NET Framework

• Microsoft SQL Server

• Angular or Vue.js

• REST APIs and system integrations

• Kubernetes and containerized deployments

The environment is Microsoft-stack focused. Candidates whose primary background is Oracle-based development are not the target for this position. The ideal candidate is a senior, backend-oriented .NET developer who can step into an established application environment, work through a backlog of support and development needs, and become a dependable technical resource for the team.

• Health insurance
• Health savings account
• Dental insurance
• Vision insurance
• Flexible spending accounts
• Life insurance
• Retirement plan