Full-Stack Software Engineer

Full- Stack Software Engineer
Clearance: Must hold an active Secret security clearance
Location: On-Site Arlington, VA
Position Type: Full-Time
Company: VivSoft Technologies

About the company:
At VivSoft, we aim to solve complex federal problems using emerging and open technologies in a collaborative and rewarding environment. VivSoft is a diverse team of strategists, engineers, designers, and creators experienced in building high-performance effective software, with impactful organizational design and organizational dynamics for software delivery. We build secure Software Factories based on DoD reference designs and NIST Frameworks for Cloud and DevSecOps. These factories deliver AI/ML Applications, Data Science Platforms, Blockchain, and Microservices for DoD, Healthcare, and Civilian Agencies.

Job Summary:
VivSoft is seeking a skilled software engineer with deep expertise in both legacy and modern application environments to support the sustainment, optimization, and enhancement of mission-critical systems. This role is responsible for designing and maintaining microservices-based architectures, refactoring legacy MOBCOP code for Air Force use, and developing unit, integration, and automated test suites. The ideal candidate will apply a strong understanding of mobilization systems to deliver secure, scalable, and high-performing solutions aligned with contract requirements and modernization objectives.

Key Responsibilities:
• Design, develop, and maintain scalable microservices to support modernization and mission-critical workflows
• Refactor legacy codebases (including MOBCOP) to align with current Air Force requirements and technical standards
• Write and maintain unit, integration, and automated test suites to ensure software quality and system reliability
• Support ongoing sustainment and optimization of both legacy and modernized applications
• Participate in Agile ceremonies and contribute to sprint planning, backlog grooming, and code reviews
• Collaborate with cross-functional teams, including DevSecOps, cybersecurity, and QA, to ensure cohesive delivery
• Ensure all software meets performance, security, and compliance requirements as outlined in the PWS
• Troubleshoot and resolve software defects, production issues, and performance bottlenecks
• Maintain clear and concise technical documentation to support development and deployment activities

Skills/Qualifications Required:

• Bachelor’s degree in computer science, Software Engineering, or related field (master’s preferred).
• Clearance: Active secret clearance is required.
• 7+ years in software engineering, including senior-level roles.
• Deep knowledge of AGILE practices, testing phases (IV&V), and SDLC stages (design, deployment, maintenance)
• Implementation of security best practices and performance tuning
• Familiarity with project management tools (Jira, Asana) and DevOps/CI-CD pipelines
• Ability to mentor junior engineers and lead cross-functional teams.
• Analytical thinking to resolve complex technical challenges.
• Clear articulation of technical concepts to stakeholders and non-technical audiences.
• Team-oriented approach for brainstorming and project execution.

Benefits:

• Comprehensive Medical, Dental, and Visions Plans (Healthcare benefits are 100% employer-paid for employees only)
• Life Insurance
• Paid Time Off (Flexible/Combined PTO, Bereavement Leave, 11 Company Paid Holidays)
• 401K Retirement Plan with employer match
• Professional Development Training Reimbursement
• Flexible/remote work schedules

Target salary range: $130,000 - $165,000.