Software Development Engineer IV

Title:
Sr. .NET Developer
Duration: 8 month contract to hire
Location:
Marietta, GA || Alpharetta, GA - 5 days onsite
NO C2C W2 only - Only GCs and USCs

As a Senior Software Development Engineer, you will design and build high‑performance distributed applications within a large‑scale logging and metrics ecosystem. You'll modernize legacy systems, integrate with mainframe and batch workflows, and develop critical software that supports compliance, interoperability, and core business operations. You will play a key role in architecture decisions, technical leadership, and guiding development best practices.

• Architect, design, and develop a new unified platform by consolidating multiple legacy systems.
• Reverse‑engineer and decompile legacy codebases where source code is unavailable.
• Collaborate with internal stakeholders to define requirements, workflows, and technical solutions.
• Lead technical design, solution architecture, and implementation of business initiatives.
• Provide technical oversight across applications, ensuring best practices and high code quality.
• Analyze complex application and business problems, evaluate processes, and recommend improvements.
• Participate in planning, procedure development, backlog management, and on‑call support.

• 6 years of professional software development experience.
• Expertise in .NET 6 / .NET 8, including REST and SOAP service development (Swagger/OpenAPI).
• Frontend development experience with MVVM/SPA frameworks using Blazor.
• Strong understanding of data exchange formats (JSON, XML, RDF).
• Experience with relational and No
  
  SQL databases and messaging/queueing systems (e.g., Mongo
  
  DB, Redis, Rabbit
  
  MQ).
• Proven technical leadership in .NET/C#/ASP.NET application design, integration, and data‑driven architectures.