Senior Python Developer

Job Category: Python
Job Type: Onsite
Job Location: McLean Virginia
Compensation: Depends on Experience
W2: W2-Contract Only; Kindly note that applications on a C2C basis will not be considered for this role.
Eligible Visa: GC GC-EAD H4 EAD L2S U.S. Citizen (USC)

US Work Authorization Requirement:
Candidates must be legally authorized to work in the United States without employer sponsorship. This includes, but is not limited to, U.S. Citizens, Permanent Residents, and other individuals with valid U.S. work authorization.

Job Description: 

We are seeking a highly experienced Python Developer with 12+ years of overall IT experience, including 5+ years of deep, hands-on Python development, to design and build scalable, high-performance RESTful APIs. This role focuses on backend API development using Flask or FastAPI and strong application design principles.

The ideal candidate is a solid problem-solver with a strong foundation in object-oriented programming, experience building production-grade APIs, and the ability to work collaboratively in a fast-paced environment. While cloud exposure is limited in this project, familiarity with AWS and modern DevOps practices is a plus.

Key Responsibilities

  • Design, develop, and maintain RESTful APIs using Python and Flask or FastAPI
  • Apply strong object-oriented design principles to build clean, reusable, and maintainable code
  • Develop backend services that are scalable, secure, and high-performing
  • Collaborate with product owners, architects, and frontend teams to deliver end-to-end solutions
  • Write efficient, well-tested, and production-ready Python code
  • Implement unit and integration tests to ensure code quality and reliability
  • Debug, troubleshoot, and resolve complex technical issues
  • Participate in code reviews and contribute to best practices
  • Maintain technical documentation and support ongoing enhancements

Required Qualifications & Experience

Must Have

  • 12+ years of overall IT experience
  • 5+ years of strong, hands-on experience in Python development
  • Proven experience building REST APIs using Flask or FastAPI
  • Strong understanding of object-oriented programming (OOP) concepts
  • Experience developing production-grade backend services
  • Solid debugging and problem-solving skills
  • Strong communication and collaboration abilities

Preferred / Nice to Have

  • Experience with Python libraries such as Pandas and NumPy
  • Exposure to FinTech or financial domain projects
  • Familiarity with AWS cloud services
  • Experience with containers (Docker, Kubernetes)
  • Experience with testing frameworks (Pytest, Unittest, Behave)