Senior .NET Systems Architect Developer - TS cleared

Bart & Associates, LLC; North Charleston (SC); On-site; USD 100,000 - 120,000; Full time

Benefits offered by this job

100% premium paid medical plan

Tuition assistance

Paid time off

Virtual exercise platform subscription

Job summary

Bart & Associates, LLC is searching for a Senior .NET Systems Architect / Developer to support a federal program. This position involves maintaining and enhancing existing systems in a legacy technology environment, contributing to integration efforts, and performing architecture improvements.

The ideal candidate should have strong .NET/C# skills and experience in data integration across multiple platforms. Benefits include a premium paid medical plan, paid time off, and various employee wellness programs.

Qualifications

• 5-8+ years of experience in software development and/or system architecture.
• Experience troubleshooting and supporting development and deployment environments.
• Strong communication and collaboration skills.

Responsibilities

• Support development and maintenance of .NET/C# applications within a legacy system environment.
• Design and implement data movement solutions across diverse platforms.
• Collaborate with teams to support continuity of operations.

Skills

.NET Framework / .NET Core

C# development

Microsoft Visual Studio

Data integration, ETL processes

Legacy systems (COBOL, mainframe)

Education

Bachelor's degree in Computer Science, Information Systems, Engineering

Tools

Oracle

Microsoft SQL Server

Job description

Senior .NET Systems Architect / Developer

We are seeking an experienced Senior .NET Systems Architect / Developer to support a federal program operating within a legacy technology environment while supporting ongoing system enhancements and integration efforts. This role focuses on maintaining, enhancing, and stabilizing existing systems while contributing to incremental improvements in system architecture, data integration, and development processes.

The ideal candidate will have strong experience in .NET/C# development, familiarity with legacy systems, and a demonstrated ability to support data movement and integration across multiple platforms. This role will also contribute to improving development and deployment workflows, including supporting environment setup and system interoperability.

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, including coordination with stakeholders to address setup, configuration, and deployment challenges.
• Design and implement data movement and integration solutions across diverse platforms (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.

Education and Experience

• Bachelor's degree in Computer Science, Information Systems, Engineering, or equivalent experience.
• 5-8+ years of experience in software development and/or system architecture.

Required Qualifications

• Strong experience with:
  • .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.

Preferred Qualifications

• Experience working in federal or highly regulated environments.
• Familiarity with modern data platforms, including Databricks or similar technologies (desired for future‑state capabilities).
• Experience with data modeling and database design.
• Exposure to cloud platforms (Azure, AWS, or similar).
• Basic understanding of network architecture and system connectivity.
• Exposure to AI/ML or advanced analytics tools.

Certifications (Preferred)

• CompTIA Security+ (or equivalent baseline certification)
• CompTIA Network+
• Microsoft Certified: Azure Fundamentals or Azure Solutions Architect
• Databricks Data Engineer Certification (desired)
• ITIL Foundation Certification

  Key Attributes

  • Strong problem‑solving mindset in 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. Able to obtain TS/SCI.

  Benefits

  B&A is proud to offer full‑time employees a 100% premium paid medical plan option, which includes coverage for medical, prescription, dental, vision, life insurance, AD&D, disability, Teladoc, and accident insurance. In addition to these benefits, B&A employees enjoy paid time off, tuition assistance, B&A sponsored trainings and certifications, commuter transit benefits (SmartBenefits) for DC Metro full‑time employees, and a free subscription to a virtual exercise platform (NEOU).

  B&A has launched several programs to focus on employee engagement, wellness, and assistance, including:

  • The B&A Cares program: on‑staff registered counselor, wellness check‑ins, personal development, financial management, and stress management seminars, wellness challenges, and more
  • A formal mentorship program
  • Job shadowing and cross training opportunities
  • Brand Ambassador program
  • Lifeworks Employee Assistance Program (EAP): engagement through guided wellness and peer recognition. Access to various support resources to include counseling, legal guidance, financial planning, and more
  • Monthly virtual events
  • B&A Annual Wellness Challenge: StepWithBnA, WalkDuringLunchWithBnA, VolunteeringWithBnA, and ExerciseDuringLunchWithBnA, and more

  EEO

  B&A provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, disability, genetic information, marital status, amnesty, or status as a covered veteran in accordance with applicable federal, state and local laws. B&A complies with applicable state and local laws governing non‑discrimination in employment in every location in which the company has facilities. This policy covers conduct occurring at B&A's offices, and other workplaces (including client sites) and all other locations where B&A is providing services, and to all work‑related activities.

  EEO is the Law

  B&A participates in e-Verify. We provide the Social Security Administration (SSA) and, if necessary, the Department of Homeland Security (DHS) with information from each new employee's I-9 Form to confirm work authorization.