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# Sr. Full Stack Software Developer

- **Company:** Holtec International
- **Location:** Camden, NJ, United States
- **Experience:** Expert
- **Salary:** $120,000.0 - $150,000.0
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, JavaScript (Programming Language), .NET Framework, Artificial Intelligence, Applications Architecture, Architectural Patterns, HTML5, Bootstrap (Software), C Sharp (Programming Language), Cascading Style Sheets (CSS), Software Documentation, Profiling, Software Quality, Code Review, Databases, Command-Query Responsibility Segregation (Software Development), Database Storage Structures, Dependency Injection, Software Design Patterns, DevOps, Design of User Interfaces, OAuth, OpenID, Query Optimization, Azure Active Directory, Secure Coding, Software Engineering, SQL Stored Procedures, Diagnostic Tools, Enterprise Software Applications, .NET Core, Blazor, Git, Containerization, Solid Principles, Information Technology, Codebase, Front End Software Development, Software Coding, Restful APIs, Software Version Control, Docker, Legacy Systems
- **Published:** October 10, 2026
- **Apply:** https://www.careerjet.com/job/us594f13816cb839ca521b509d4f29bbc1/eaa

## About the Role

* Bachelor's degree in Computer Science, Engineering, or a related field, with 10+ years of professional software development experience in enterprise environments
 * Deep expertise in C#, .NET Core, and .NET Framework, with experience developing, maintaining, and modernizing both modern and legacy codebases across full-stack applications
 * Strong full-stack development and architecture experience, including RESTful APIs, front-end technologies (Blazor, HTML5, CSS3, JavaScript, Bootstrap), and scalable system design utilizing SOLID principles, design patterns, dependency injection, and CQRS
 * Advanced SQL Server expertise, including schema design, index strategy, stored procedures, query optimization, and execution plan analysis
 * Experience with enterprise authentication and authorization (OAuth2, OIDC, Azure AD / Entra ID or similar), along with secure development practices
 * Proven ability to lead and own architectural decisions at both application and database levels, while working effectively across complex, multi-application enterprise environments
 * Strong experience improving and navigating legacy codebases, with a focus on enhancing performance, scalability, and maintainability
 * Experience with Git-based version control, collaborative code review, DevOps practices (CI/CD pipelines), and containerization technologies (Docker)
 * Familiarity with performance profiling and troubleshooting tools, application modernization/migration (.NET Framework to .NET Core), and emerging development practices including AI-assisted coding tools
 * Strong communication and stakeholder management skills, with the ability to translate business requirements into technical solutions, work independently, manage priorities, and deliver high-quality outcomes
 * High attention to detail with a strong focus on code quality, documentation, and user experience, including UI/UX considerations

## Description

The Senior Software Developer plays a critical role in the design, development, and maintenance of enterprise applications, supporting both new development and legacy systems. This role serves as a technical subject matter expert, partnering with internal stakeholders to define solutions, guide architectural decisions, and deliver scalable, secure software in a complex, fast-paced environment. The ideal candidate brings strong full-stack expertise, sound technical judgment, and the ability to independently drive high-quality solutions from concept through delivery., * Serve as the technical subject matter expert across a portfolio of enterprise applications

 * Partner with internal stakeholders to gather requirements, define scope, and identify risks early
 * Translate complex business processes into sound technical designs and deliver solutions independently
 * Design and document application architecture and database structures
 * Enforce coding standards, architectural patterns, and development best practices
 * Architect scalable, maintainable solutions and evaluate existing systems for optimization
 * Perform peer code reviews and uphold high standards of code quality
 * Apply and promote secure software development practices
 * Identify technical risks and provide clear, actionable solutions
 * Develop well-structured, efficient, and maintainable code
 * Estimate and scope work independently in planning sessions
 * Maintain and enhance system and code documentation
 * Mentor and support junior developers where applicable, We believe great work deserves great rewards. Our benefits go beyond the basics, reflecting our commitment to supporting your whole self…your health, your future, and your career growth. This includes