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Senior Full Stack Python Developer; On-Site

Job in Falls Church, Fairfax County, Virginia, 22042, USA
Listing for: Lion Federal
Full Time position
Listed on 2026-07-16
Job specializations:
  • Software Development
    Full Stack Developer, Backend Developer, Python, Front End Developer
Salary/Wage Range or Industry Benchmark: 125000 - 160000 USD Yearly USD 125000.00 160000.00 YEAR
Job Description & How to Apply Below
Position: Senior Full Stack Python Developer (On-Site)

Senior Full Stack Python Developer (On-Site)

Full time | Lion Federal | United States

Posted On 09/23/2024

Job Information

244

IT Services

Location

Falls Church, VA

City

Falls Church

State/Province

22040

Job Description

Job Type :
On-site, full-time

City:
Falls Church, VA

Lion Federal is a dynamic and rapidly expanding tech company dedicated to delivering cutting‑edge AI‑powered solutions tailored for enterprise‑level clients, including the U.S. Federal government.

At Lion Federal, we believe our team is the heartbeat of our success. We’ve built an environment where your growth is nurtured, and your voice truly matters. Here, you’ll enjoy all the benefits of a large company, along with some rare perks that set us apart:

  • Build genuine connections with team members at all levels
  • Get quick, meaningful responses from leadership who genuinely care
  • Feel a true sense of ownership, because your insights and feedback shape the future of our company

We are seeking a highly motivated and experienced Senior Full Stack Python Developer to join our dynamic team in Falls Church, VA.

Position Summary:

We are seeking an experienced Senior Full Stack Python Developer to join our team. In this role, you will work on building scalable, high-performance back‑end systems and integrating them with front‑end platforms. You will collaborate with cross‑functional teams, including front‑end developers, AI/ML experts, and Dev Ops, to ensure the seamless execution of our product’s architecture and functionality.

The ideal candidate will have a strong background in both back‑end development and front‑end technologies, with the ability to take ownership of projects and contribute to the entire development lifecycle.

Key Responsibilities
  • Lead the development and maintenance of back‑end services, APIs, and databases using Python and related frameworks (Django, Flask, FastAPI).
  • Work on full‑stack development by integrating front‑end solutions with back‑end systems.
  • Collaborate closely with front‑end developers to ensure seamless functionality across the platform.
  • Design, implement, and optimize databases (SQL/No

    SQL) for scalability and performance.
  • Participate in the design and implementation of cloud‑based solutions using AWS, Azure, or Google Cloud.
  • Ensure code quality, security, and best practices through automated testing and code reviews.
  • Actively contribute to the full software development lifecycle, from design to deployment and beyond.
  • Troubleshoot and resolve complex technical issues across the stack.
  • Stay current with industry trends and continuously improve development processes and efficiency.
Requirements
  • 7+ years of experience in full‑stack development, with a strong focus on Python and related back‑end frameworks (Django, Flask, etc.).
  • Experience with RESTful API design and integration.
  • Proficiency in working with both relational (SQL) and non‑relational (No

    SQL) databases.
  • Familiarity with cloud infrastructure (AWS, Azure, Google Cloud) and containerization (Docker, Kubernetes).
  • Strong problem‑solving and debugging skills.
  • Experience with version control tools (Git) and CI/CD pipelines.
  • Excellent communication skills and the ability to work in a collaborative team environment.
Nice‑to‑Haves
  • Exposure to AI/ML technologies and integrating them into scalable solutions.
  • Knowledge of Dev Ops practices and cloud automation.
  • Experience in working in agile environments and fast‑paced startups.
Why Join Us?
  • Be a key player in building innovative AI‑driven solutions for enterprise clients.
  • Collaborate with a team of experienced developers and AI experts.
  • Competitive salary and benefits package.
  • Opportunity to make a significant impact and shape the future of our product.
  • Comprehensive Care First BCBS Medical, Dental, and Vision insurance fully covered for you and your family.
  • Supportive team environment with outstanding leadership that values employee well‑being.
  • Generous paid time off, plus 11 paid holidays.
  • 401(k) retirement plan with employer match.
  • Performance‑driven bonus program.
  • Budget allocated for professional development and growth.
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Position Requirements
10+ Years work experience
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