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Sr. Full Stack Software Developer

Job in Camden, Camden County, New Jersey, 08100, USA
Listing for: Holtec International
Full Time position
Listed on 2026-05-23
Job specializations:
  • Software Development
    Full Stack Developer, Software Engineer
Salary/Wage Range or Industry Benchmark: 120000 - 150000 USD Yearly USD 120000.00 150000.00 YEAR
Job Description & How to Apply Below

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  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, Dev Ops 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 Day1 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
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