Senior Software Engineer
Listed on 2026-02-08
-
Software Development
Software Engineer, C# / Unity Developer
Overview
MBA CSi has partnered with iHire to reach top talent for their opening below. MBA Consulting Services, Inc. (MBA CSi) is supporting a long-term, multi-year engagement with the U.S. Postal Service—and we’re seeking a Senior Software Engineer to join the USPS Software Engineering team in Merrifield, VA. As an MBA CSi employee, you’ll work onsite at USPS Engineering Systems Headquarters
, designing and delivering modern, enterprise-scale software solutions that enhance and re-engineer mission-critical USPS systems
. This role is well-suited for a seasoned engineer who thrives in complex environments and enjoys modernizing legacy platforms using proven, scalable technologies.
- Design, develop, modify, and implement software applications across enterprise systems
- Participate in the full Software Development Life Cycle (SDLC)—planning, designing, and coordinating development efforts
- Support and install software applications and operating systems
- Provide hands-on technical support to project and development teams
- Apply creativity and technical judgment in fast-paced R&D environments
- Collaborate closely with team members and stakeholders to ensure clear understanding of requirements and deliverables
- Report to the development team lead while contributing as a senior technical resource
- Bachelor’s degree (preferably in a related technical discipline)
- 8+ years of professional experience in software engineering or a related field
- Strong experience with C# and the .NET platform
- Web application and web services development, including XML and JSON
- Proficiency using Microsoft Visual Studio with Team Foundation Server (TFS) for source control
- Experience with C#.NET database interface design and SQL commands
- Hands-on experience with C# Win Forms, including kiosk-style applications
- Experience with multi-threaded C# application design
- Familiarity with Microsoft Entity Framework (preferred)
- Experience working in Windows environments (Windows 10, Windows Server)
- Familiarity with WPF and modern UI technologies (preferred)
- Exposure to UI accessibility standards, including Section 508 compliance, is a plus
- Experience integrating with system interfaces, including APIs and Kafka
- Knowledge of additional programming languages or hardware driver development is a plus
- Ability to demonstrate current or recent work is preferred
- Must pass a pre-employment background check and drug test
MBA CSi is a trusted federal contractor delivering engineering, IT, and professional services to mission-critical customers, including the U.S. Postal Service. We offer long-term programs, stability, and a culture built on quality, accountability, and impact.
Equal Opportunity / Affirmative ActionEqual Opportunity / Affirmative Action Employer. Minorities, Women, Veterans, and Individuals with Disabilities are encouraged to apply.
#CJ, #IND1, #IH
Employment Type:
Full Time
Salary: $100,000 - $120,000 Annual
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