Eng Sr Prin - SW

BAE Systems • Huntsville, AL

1d • $108,787 - $184,937 • Onsite

About The Position

We're seeking a senior-level developer to contribute to the BAE Systems Fuels preventive maintenance application, supporting DLA's fuel automation equipment program and greater Mission Solutions portfolio. You'll work on complex business logic, integrate with enterprise authentication systems, and help establish patterns for junior developers to follow.

Requirements

• 7 to 10 years of professional software development experience
• Ability to obtain and maintain a Secret security clearance
• Strong C# and .NET development skills (.NET Core/.NET 5+ experience)
• Solid understanding of MVVM pattern and data binding
• Experience with Entity Framework Core or similar ORM
• Proficiency with relational database design and SQL
• Experience with dependency injection containers (Autofac, Microsoft.Extensions.DI, etc.)
• Understanding of async/await patterns and concurrency
• Git workflow experience (branching, merging, pull requests)
• Unit testing experience (xUnit, NUnit, Moq)
• Ability to work independently with minimal supervision
• Strong problem-solving skills for complex technical challenges
• Mentoring and knowledge-sharing with junior developers
• Clear technical communication (architecture discussions, code reviews)
• Ability to translate business requirements into technical designs
• Comfortable working with government SOPs and compliance requirements

Nice To Haves

• WPF application development experience
• PostgreSQL administration and optimization
• OAuth 2.0 / OpenID Connect implementation experience
• Keycloak or other identity provider integration
• Experience with iText or other PDF libraries
• Background with military or government contract systems
• FluentValidation experience
• Serilog or structured logging frameworks
• Experience with hash chain or tamper-evident audit systems
• Understanding of DoD security requirements (STIGs, FIPS 140-2)

Responsibilities

• Design and implement workflow state machine for form approval lifecycle
• Build deliverable automation system (PDF packaging, CI number assignment)
• Implement complex repository methods with Entity Framework Core
• Design and implement service layer components (business logic)
• Create reusable WPF controls and MVVM components
• Optimize database queries and resolve performance bottlenecks
• Mentor entry-level developers through code reviews and pair programming
• Write comprehensive unit and integration tests
• Implement security features (role-based access control, audit logging)
• Participate in architecture decisions for new features

What This Job Offers

• Job Type: Full-time
• Career Level: Senior