Full-Stack C# Developer with expertise in Windows Forms (WinForms)

Full-Stack C# Developer (Windows Forms, Angular, API, Secure Communications)

Job Summary:

We are seeking a Full-Stack C# Developer with expertise in Windows Forms (WinForms) client-server applications, Angular web forms, and secure API development. The ideal candidate will have experience developing C# APIs that interact with MS SQL Server, implementing FIPS 140-2 encryption for data security, and working with Windows Services. Additionally, the candidate should be proficient in SFTP, machine-to-machine communications via email formatting, and other secure communication protocols.

Key Responsibilities:

Windows Forms & Client-Server Development:

Design, develop, and maintain Windows Forms (WinForms) client-server applications in C#.

Optimize stored procedures and database interactions in MS SQL Server.

Develop and maintain Windows Services for background processing and automation.

Web & API Development:

Develop and maintain Angular web forms with a C# API backend.

Build secure, scalable APIs using ASP.NET Core/Web API.

Ensure API communication and database storage comply with FIPS 140-2 encryption standards.

Secure Communications & Data Exchange:

Implement secure file transfers using SFTP and other encryption protocols.

Develop machine-to-machine (M2M) communication using email-based data exchange and formatting.

Ensure secure authentication and authorization using best practices, including OAuth, JWT, and multi-factor authentication (MFA).

Performance, Security & Compliance:

Ensure database encryption, API security, and secure data storage comply with FIPS 140-2.

Optimize database queries and stored procedures for scalability and performance.

Monitor and troubleshoot system performance, network communications, and data integrity.

Required Skills & Qualifications:

Development & Frameworks:

Strong experience in C# and .NET Framework/.NET Core.

Windows Forms (WinForms) development expertise.

Proficiency in Angular (version 10+ preferred) for web application development.

Experience developing RESTful APIs using ASP.NET Core/Web API.

Strong understanding of MS SQL Server, stored procedures, and database performance tuning.

Security & Compliance:

Hands-on experience implementing FIPS 140-2 encryption for data storage and transmission.

Experience with SSL/TLS encryption, secure authentication (OAuth, JWT, SAML), and access control best practices.

Knowledge of cybersecurity principles, secure coding practices, and vulnerability management.

Windows Services & Communications:

Experience developing and maintaining Windows Services.

Familiarity with SFTP, SMTP, POP3, and other machine-to-machine (M2M) communication protocols.

Understanding of networking, firewalls, and secure data transmission.

Preferred Skills:

Experience with Blazor or WPF for modern UI development.

Knowledge of containerization (Docker, Kubernetes).

Familiarity with PKI (Public Key Infrastructure) and digital certificates.

Education & Experience:

Bachelor’s degree in Computer Science, Software Engineering, or a related field (or equivalent experience).

3+ years of experience in C# Windows Forms and SQL development.

2+ years of experience with Angular and API development.

Experience implementing FIPS 140-2 encryption is highly preferred.