Developer Jobs in North Charleston, SC

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30d ago

.NET Developer- TOP SECRET CLEARED

Marathon TS North Charleston, SC

North Charleston, SC

30d ago Closed

Up to $44/hr Full time Backend Developer .NET .NET Core

This position is no longer accepting applications (closed Aug 22, 2026).

Job Description

Marathon TS seeks an experienced .NET and C# developer to support a federal program within a legacy technology environment. The role requires an active Top Secret clearance and emphasizes maintaining, stabilizing, and enhancing existing systems while improving data integration and development workflows. This is an onsite position based in North Charleston, South Carolina.

Responsibilities

Support development and maintenance of .NET/C# applications within a legacy system environment using Microsoft Visual Studio.
Assist with establishing and stabilizing development and production environments, coordinating with stakeholders to address setup, configuration, and deployment challenges.
Design and implement data movement and integration solutions across diverse platforms including legacy systems, databases, and modern tools.
Analyze existing systems, including COBOL or mainframe components, and recommend practical enhancements to improve performance, reliability, and maintainability.
Support data modeling and ETL processes to ensure consistent and reliable data flow.
Collaborate with federal staff, vendors, and internal teams to support continuity of operations and technical alignment.
Contribute to system and network architecture discussions, including connectivity and performance considerations.
Support evaluation and application of modern tools and technologies, where appropriate, to enhance data processing and analytics capabilities.
Identify opportunities to improve efficiency and scalability within existing system constraints.
Assist with documentation, knowledge transfer, and system continuity efforts.

Requirements

Bachelor's degree.
.NET Framework / .NET Core
C# development
Microsoft Visual Studio development environments
Oracle and/or Microsoft SQL Server (MS SQL)
Experience with data integration, data movement, or ETL processes
Familiarity with legacy systems, including COBOL or mainframe environments
Experience troubleshooting and supporting development and deployment environments
Understanding of system integration and distributed systems
Strong communication and collaboration skills

Technologies

.NET Framework / .NET Core
C#
Microsoft Visual Studio
Oracle
Microsoft SQL Server (MS SQL)
COBOL
Databricks
Azure

Benefits

401(k)
Dentical insurance
Health insurance
Paid time off
Vision insurance

Key Attributes

Strong problem solving mindset for bridging legacy and modern systems
Practical, detail oriented approach to system stability and incremental improvement
Ability to work effectively in structured environments with evolving requirements
Collaborative approach across government, contractor, and vendor teams
Commitment to documentation, knowledge sharing, and operational continuity

Security Clearance

Active Top Secret clearance. Ability to obtain TS/SCI.

Compensation

Up to $44.23 per hour

Experience

.NET: 7 years (Required)
C#: 7 years (Required)

Application Questions

Do you hold any of the following certifications: CompTIA Security+ (or equivalent baseline certification), CompTIA Network+, Microsoft Certified: Azure Fundamentals or Azure Solutions Architect, Databricks Data Engineer Certification (desired), ITIL Foundation Certification?
How many years of experience do you have in software development and/or system architecture?

Location and Commute

Ability to commute: North Charleston, SC 29419 (Required)
Work location: In person

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