Application Developer Jobs in Philadelphia, PA (NOW HIRING)

Position Summary:

We are seeking a Mid-Level .NET Developer to design, develop, and maintain secure, scalable web applications using ASP.NET technologies. This is a hands-on development role that participates in all phases of the software development lifecycle, from requirements analysis and design through implementation, testing, deployment, and support. A key focus of this role is building and maintaining secure applications in compliance with HIPAA and other applicable regulatory and organizational security standards. This ideal candidate is a detail-oriented developer with 3-6 years of experience in .NET development, a strong commitment to code quality, and the ability to deliver reliable, maintainable solutions in a team-oriented environment.

Duties and Responsibilities:

• Design, develop, and maintain web applications using C#, ASP.NET Core, Razor Pages, MVC, and Web API.
• Implement business and technical requirements by building secure, scalable, and maintainable solutions following established architectural patterns.
• Develop and enhance responsive user interfaces using HTML, CSS, JavaScript, and related front-end technologies to deliver an intuitive, user-centered experience.
• Apply secure coding practices to prevent common vulnerabilities (e.g., input validation, authentication/authorization, OWASP Top 10).
• Write and optimize SQL queries, stored procedures, triggers, and database schemas in Microsoft SQL Server, following best practices for performance and data integrity.
• Implement audit logging and monitoring to track system activity and access to sensitive data while safeguarding protected information and data confidentiality.
• Collaborate with business stakeholders to refine requirements, define functionality, QA, troubleshoot issues, and deliver user-centric solutions. Utilize Azure DevOps (or similar tools) for source control, branching, automated deployments, and work item tracking in Azure Boards.
• Support the modernization of legacy systems, including migration to .NET Core and cloud-enabled architectures.
• Ensure compliance with HIPAA, data privacy standards, and organizational security policies in all development activities.

Skills Required:

• Proficiency in .NET development using C# and ASP.NET, with hands-on experience in ASP.NET Core, MVC, and Web API for building secure, scalable web applications.
• Strong front-end development skills, including practical experience with Razor Pages, JavaScript, HTML, CSS, and modern web development best practices.
• Microsoft SQL Server expertise, including writing optimized SQL queries, developing stored procedures and triggers, and applying sound database design principles such as normalization, indexing, and relational modeling.
• Solid understanding of secure coding practices, including input validation, output encoding, secure authentication/authorization patterns, and mitigation of common vulnerabilities aligned with OWASP guidelines.
• Experience implementing audit logging and monitoring, particularly in systems handling sensitive or regulated data.
• Experience with Git and familiarity with Azure DevOps or similar platforms for source control, work tracking, and automated deployments.
• Excellent communication and interpersonal skills, with the ability to work effectively across technical teams and non-technical stakeholders.
• Ability to work effectively with reporting and data teams to support data integration, analytics, and business intelligence needs.
• Strong analytical and problem-solving skills, with attention to detail, data accuracy, and a focus on accuracy.

Education and Experience:

• Experience developing or supporting applications in HIPAA-regulated or other highly secure, compliance-driven environments.
• Familiarity with Identity and Access Management (1AM) concepts and tools, such as ASP.NET Core Identity and Azure AD (Entra ID).
• Experience implementing or supporting single sign-on (SSO) solutions across web applications using enterprise identity providers.
• Experience designing, developing, and consuming RESTful APIs, as well as integrating with internal and third-party systems.
• Bachelor’s degree in Computer Science or a related field, or equivalent hands-on professional experience in software development demonstrating strong technical capability.

Equal Opportunity Employment:

PMHCC, Inc. is committed to equal opportunity. It is our policy to support equal employment for all employees and applicants without regard to race, religion, color, sex, sexual preferences, age, national origin, disability, behavioral health status, military status or any other characteristic protected by law.

Americans with Disabilities Act:

Employees as well as applicants who are currently, or become disabled, must be able to perform the functions of the job with either reasonable accommodation or unaided. PMHCC, Inc. will examine reasonable accommodations on a case by case basis in accordance with the law