Python Developer

NS2 Mission
United States, Virginia, Chantilly
Aug 13, 2025
Are you a mid-level developer looking to take the next step in your career? NS2 Mission is seeking a Python Developer to join our team in Herndon/Chantilly, VA, supporting the design and development of data processing applications. In this role, you will contribute across the software development lifecycle, from translating requirements into user stories to building, testing, and deploying cloud-native solutions. You will work closely with technical leads and engineers, take ownership of key components, and ensure high-quality, scalable, and efficient code. The ideal candidate is proficient in Python, experienced with cloud deployments, and skilled in developing solutions that integrate with open-source tools, APIs, and containerized environments. Key Responsibilities Collaborate with the Chief Engineer and Technical Leads to translate requirements into user stories and integrate new functionality into existing applications. Design, build, and test software components with automated testing frameworks to support CI/CD deployment pipelines. Develop and maintain web APIs to interface with cloud applications and databases. Contribute as part of an Agile team, delivering iterative software solutions. Integrate Python code into Docker containers to support distributed, cloud-native architectures. Design software components independently based on requirements while guiding technical design and architecture best practices. Work directly with customer stakeholders to align requirements and technical implementations. Required Skills & Experience (3-5 years minimum) Strong proficiency with Python data processing libraries (PySpark, Pandas, NumPy). Hands-on experience developing APIs with FastAPI or similar frameworks. Experience writing unit tests with PyTest and leveraging mocking frameworks. Familiarity with CI/CD pipelines and automated testing best practices. Preferred Skills & Experience Experience with Python ORM tools such as SQLAlchemy. Deployment of containerized Python applications using Docker on cloud platforms (AWS preferred). Knowledge of NLP frameworks and toolkits for production environments. Experience deploying AI/ML models into production using Python frameworks. Position Clearance Requirement: TS/SCI with an FSP We win with inclusion NS2 Mission's culture of inclusion, focus on health and well-being, and flexible working models help ensure that everyone - regardless of background - feels included and can run at their best. At NS2 Mission, we believe we are made stronger by the unique capabilities and qualities that each person brings to our company, and we invest in our employees to inspire confidence and help everyone realize their full potential. We ultimately believe in unleashing all talent and creating a better world. NS2 Mission is committed to the values of Equal Employment Opportunity and provides accessibility accommodations to applicants with physical and/or mental disabilities. If you are interested in applying for employment with NS2 Mission and are in need of accommodation or special assistance to navigate our website or to complete your application, please send an e-mail with your request to Recruiting Operations Team: NS2Mission.Careers@sapns2.com. Qualified applicants will receive consideration for employment without regard to their age, race, religion, national origin, ethnicity, age, gender (including pregnancy, childbirth, et al), sexual orientation, gender identity or expression, protected veteran status, or disability, in compliance with applicable federal, state, and local legal requirements.