Senior .NET Developer (TS required)

Software Development Washington, District Of Columbia

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Description

At MetaPhase, we believe Quirky is Cool and being authentic is the only way to be!  We take the work we do very seriously and do a lot of important mission-focused work for our clients. We are individuals with different passions and strengths who take as much joy in the work we do as from those we work with. Today, we have a team that is invested in creating new solutions that lean forward, challenge the status quo, but also reflect our intimate knowledge of our customers’ business. Over the years we have fostered a culture in which we are united by shared values—passion, solidarity, generosity, curiosity, and boldness—and these come alive in the work we do and how we do it.     
   
Together, we know our people are our difference—for our clients and our colleagues.  
   
Are you ready to: 

  • Work alongside a dedicated and diverse set of people to offer honest advice and practical guidance to our clients?

  • Learn and grow by taking advantage of every opportunity available to you? 
  • Be the difference and make it happen?
MetaPhase is seeking a hands‑on, Top Secret–cleared .NET Architect / Lead Developer to lead the modernization and sustainment of a mission‑critical national security system. This is a player‑coach role for a senior technologist who enjoys designing robust solutions, writing code, and guiding a team through complex technical challenges.
You will play a key role in translating complex mission requirements into scalable, secure, and maintainable applications using Microsoft .NET technologies, while helping shape the future technical direction of the program.

What You Will Be Doing

  • Interpret complex business and mission requirements to design, develop, and implement .NET/MVC applications
  • Serve as technical lead for a team of .NET developers, providing guidance, code reviews, and architectural direction
  • Design, build, test, and maintain enterprise‑grade software applications and components
  • Support the modernization and sustainment of a mission‑critical system in a fast‑paced national security environment
  • Implement and continuously improve Agile development practices
  • Contribute to an innovation roadmap that advances the program’s technical capabilities and long‑term sustainability

What We Need From You (Required)

  • Active Top Secret clearance (U.S. Citizenship required)
  • 8–10 years of experience in software development and architecture using Microsoft .NET technologies (MVC)
  • Proven experience designing and leading enterprise‑scale application architectures
  • Strong understanding of object‑oriented design (OOD) and modern software engineering principles
  • Ability to collaborate with, influence, and communicate effectively across a diverse set of technical and mission stakeholders
  • Bachelor’s degree in Computer Science, Engineering, or a related field

Bonus Points (Preferred)

  • Formal training or advanced coursework in .NET programming best practices
  • Experience modernizing or sustaining legacy enterprise systems
  • Prior work in national security or federal environments
  • Work Setup:  
  • Onsite in Washington, DC (hybrid possible)
 
Compensation: 
  • Compensation decisions are dependent on the facts and circumstances of each case.

Benefits & Perks:
At MetaPhase, we care about your well-being and success. Our benefits include generous PTO, federal holidays, parental leave, and comprehensive health coverage (medical, dental, vision, life, and disability). We also offer a 401(k) with company match, FSA/HSA options, commuter benefits, and much more.

About MetaPhase  
MetaPhase is different with a purpose - demonstrating a new approach to the industry that puts employees and culture first! We continue to be recognized by industry as one of the fastest growing and most impactful consultancies in the nation, and are aggressively hiring to grow our team: 
  
Best Places to Work 
  • Washington Post Top Workplaces – 2022, 2023, 2024
  • Washington's Business Journal’s Best Places to Work – 2021, 2022 
  • Virginia Businesses Best Place to Work – 2021, 2022, 2023, 2024
  • Northern Virginia Technology Council Top 100 Technology Firms – 2020 
   
MetaPhase is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, national origin, disability or veteran status, or any other factors protected by federal, state, or local law.

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#LI-Hybrid 

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