Bachelor's degree in Computer Science, Engineering, or related field with 10+ years of software development experience.
Deep expertise in C#, .NET Core, and .NET Framework, with experience in both modern and legacy codebases.
Strong full-stack development experience, including RESTful APIs and front-end technologies like Blazor and JavaScript.
Advanced SQL Server skills, including schema design and query optimization.
Experience with enterprise authentication methods like OAuth2 and Azure AD.
Responsibilities
Serve as the technical subject matter expert for enterprise applications.
Partner with stakeholders to gather requirements and identify risks early.
Translate complex business processes into technical designs and deliver solutions independently.
Design and document application architecture and database structures.
Enforce coding standards and development best practices.
Architect scalable solutions and evaluate existing systems for optimization.
Perform peer code reviews to maintain high code quality.
Benefits
Industry-leading medical, dental, and vision coverage with Day 1 eligibility.
Hybrid work opportunities available for eligible roles.
401(k) retirement plan with up to a 5% company match and immediate vesting.
Paid time off and 11 paid holidays for work-life balance.
Wellness program offering rewards for health initiative participation.
Full Job 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.
Location: Camden, NJ (On-site)
Primary Responsibilities:
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
Requirements:
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
Compensation:
Annual compensation based on skills and experience ranging from $120,000 to $150,000
Benefits:
Industry-leading medical, dental, and vision coverage with a generous employer premium contribution and Day 1 eligibility!
FLEX Program - Hybrid work opportunities available for eligible roles, where business needs and role requirements allow
401(k) retirement plan with up to a 5% company match and immediate vesting to support long-term financial security
Paid time off and 11 paid holidays to support rest, balance, and recharge
Wellness program offering rewards for participation in company-supported health initiatives
Commuter benefits supporting mass transit and commuter parking options
Company-paid life and AD&D insurance for added peace of mind
Education assistance to support continued education and professional growth
Employee support and voluntary benefits, including an Employee Assistance Program and optional coverage such as disability, legal, identity theft, and insurance programs
Benefits eligibility and offerings may vary based on role, location, and employment status
About Holtec International
Holtec International is a supplier of equipment and systems for the energy industry. The company was founded in 1986 and is headquartered in Camden, New Jersey. Holtec International provides services to the nuclear, solar, geothermal, and fossil power generation industries. The company's products include spent fuel storage systems, heat transfer equipment, and nuclear fuel management systems.
