Senior Full Stack Python Developer (On-Site)

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 DevOps, 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 / NoSQL) 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

Requirements :

7+ years of experience in full-stack development, with a strong focus on Python and related back-end frameworks (Django, Flask, etc.).

Solid understanding of front-end technologies like JavaScript, HTML5, CSS3, and modern frameworks (React, Angular, or Vue).

Experience with RESTful API design and integration.

Proficiency in working with both relational (SQL) and non-relational (NoSQL) 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 DevOps practices and cloud automation.

Experience in working in agile environments and fast-paced startups.

Benefits

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.

Benefits :

Comprehensive CareFirst 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