Senior Software Engineer at NAPCO Security Technologies – Amityville | Jobyssey

Position: Senior Software Engineer- Full Stack/Backend/Cloud

Company: NAPCO Security Technologies, Inc.

Location: Amityville, NY

The Company: NAPCO Security Technologies, Inc., headquartered in Amityville, Long Island NY, is a world-wide leader in the manufacturing of electronic security systems for over 50 years has an opening for a Senior Software Engineer. We are seeking a highly skilled and motivated Senior Software Engineer with strong experience in desktop applications, backend systems, cloud infrastructure, multithreaded services, and hardware communication technologies. The ideal candidate will have deep expertise in Microsoft technologies, networking, scalable server applications, and modern AI-assisted development tools. This role requires hands-on experience designing and developing high-performance applications capable of supporting thousands of concurrent client connections in production environments

Responsibilities:

Design, develop, and maintain enterprise-level desktop applications using C#.NET Windows/Desktop technologies.
Develop and maintain web applications using ASP.NET and related frontend technologies.
Develop both frontend and backend components using JavaScript, CSS, and related web technologies.
Build scalable multithreaded Windows Services capable of handling thousands of simultaneous client connections.
Develop TCP/IP and UDP client/server applications for high-volume communication systems
Implement secure hardware communication protocols utilizing AES and TLS encryption technologies.
Design and optimize Microsoft SQL Server databases, schemas, complex queries, and server performance.
Develop AI-assisted solutions and custom AI agents for automation, reporting, monitoring, and performance tuning.
Manage and maintain cloud-hosted Windows services and web applications.
Integrate third-party cloud services using RESTful APIs and OpenAPI standards.
Collaborate with cross-functional teams to deliver scalable and secure software solutions.
Maintain source control and development workflows using Team Foundation Server (TFS) and GitHub.

Qualifications:

Bachelor’s degree in computer science, Electrical Engineering, Electronics Engineering, or a related field.
Minimum 6+ years of hands-on software development experience.
Strong experience developing C#.NET desktop Windows applications.
Strong coding experience with C#.NET, ASP.NET, JavaScript, and CSS / frontend technologies.
Extensive Microsoft SQL Server experience including Database schema design, Complex query development, Performance optimization.
Experience developing multithreaded backend Windows Services.
Strong networking knowledge including TCP/IP, UDP, and Client/server architecture.
Experience building applications supporting thousands of concurrent connections.
Experience with AI-assisted coding tools and automation workflows.
Experience in creating AI agents for operational and periodic tasks.
Strong experience with Team Foundation Server (TFS) and GitHub.
Ability to quickly troubleshoot and resolve production issues in cloud environments.
Familiarity with Linux environments.
Experience with Python, TypeScript, and additional JavaScript frameworks.
Experience managing cloud infrastructure and deployments.
Knowledge of cloud monitoring, scalability, and performance tuning.

Compensation and Benefits: We offer an attractive employment package including a competitive salary, 401(k), paid vacation, personal time off, paid holidays, long term disability insurance, tuition reimbursement, medical insurance, dental insurance, life insurance, and excellent growth potential.

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