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Senior Python Flask Developer Jobs in Fairfax, VA

Palnar

Sr. Python Developer

Mclean, VA · On-site

$123.50K - $166.20K/yr

Strong Proficiency in Python programming language, including experience with frameworks such as Flask, Django, and Fast API. * Experience with RESTful APIs and microservices architecture, and an ...

Navtech, Inc.

Senior Python Developer

Mclean, VA · On-site

$123.50K - $166.20K/yr

... Developer Experience with Python frameworks e.g., Django ... Flask. • Good experience on writing the test cases, Unit Testing, and automation test by using ...

KMM Technologies, Inc

Sr. Python Developer

Rockville, MD

$123.80K - $166.70K/yr

Position: Sr. Python Developer Location: Rockville, MD / Tysons, VA #HYBRID Duration: 12 months ... Expert-level proficiency in Python frameworks including Django, Flask, and FastAPI * Strong ...

eSolutionsFirst, LLC

Sr. Python Developer

Mclean, VA

$51.50 - $71/hr

Python Full Stack Developer Mclean, VA Must Have Qualifications: Must have practical experience ... Flask, Dash * Python data processing technologies, e.g. Pandas, Numpy * Solid understanding on web ...

Maxiom Technology

Senior Python Developer

Washington, DC

$137.60K - $185.20K/yr

We are looking for a Senior Python Developer to join our software development team. Senior Python Developer responsibilities include participating in the entire software development lifecycle ...

Unisys

Python Developer

Reston, VA

$52.25 - $72/hr

We are seeking a Senior Python Developer to support the design, development, and scaling of cloud ... Skills: Strong proficiency in Python and backend frameworks such as FastAPI, Flask Proven ...

Valueprosite

python developer

Washington, DC

$57 - $78.50/hr

We are looking for a Senior Python Developer to join our software development team. Senior Python Developer responsibilities include participating in the entire software development lifecycle ...

Aretum

Senior Python Developer

Mclean, VA · On-site +1

$122.80K - $165.30K/yr

As a Senior Python Developer, you will assist in leading the integration of a custom application with other client based systems. Due to the nature of our work as a federal consulting organization ...

Aretum

Senior Python Developer

Mclean, VA · Remote

$124.40K - $167.40K/yr

As a Senior Python Developer, you will assist in leading the integration of a custom application with other client based systems. Due to the nature of our work as a federal consulting organization ...

Kasmo Global

Sr Python AI/ML Engineer

Reston, VA · On-site

Role : Sr Python AI/ML Engineer Location: Reston, VA (Hybrid) F2F Any Visa Fine Experience: 10 ... Technical Skills: • Strong proficiency in Python programming and frameworks (e.g., Flask, FastAPI ...

BTree Solutions, Inc.

SR. PYTHON DEVELOPER

Reston, VA · On-site

$126.40K - $170.10K/yr

Job Title: SR. PYTHON DEVELOPER Location: Reston,VA Duration: 12+ Months Visa: USC, GC, H1B and EAD Contract Type: W2 Development : * Python Developer with experience in Java as a plus. * Proficient ...

Aretum

Senior Python Developer

Mclean, VA · Remote

$122.80K - $165.30K/yr

As a Senior Python Developer, you will assist in leading the integration of a custom application with other client based systems. Due to the nature of our work as a federal consulting organization ...

Interon IT Solutions

Python Developer

Reston, VA · On-site

$52.25 - $72/hr

Senior Python Developer - with Container (EKS) & AWS experience Client: Fannie Mae Location: Reston VA - In person interviews so need Local In EAST coast only Long Term This is for a Senior Python ...

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Senior Python Flask Developer information

See Fairfax, VA salary details

$56.2K

$145.1K

$199.3K

How much do senior python flask developer jobs pay per year?

As of May 28, 2026, the average yearly pay for senior python flask developer in Fairfax, VA is $145,123.00, according to ZipRecruiter salary data. Most workers in this role earn between $124,200.00 and $167,100.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Senior Python Flask Developer, and why are they important?

To thrive as a Senior Python Flask Developer, you need advanced proficiency in Python, deep understanding of the Flask framework, and experience designing scalable backend architectures, typically supported by a degree in computer science or related field. Familiarity with RESTful API development, database management systems like PostgreSQL or MySQL, and version control tools such as Git is essential, and certifications in cloud platforms or web development can be beneficial. Strong problem-solving skills, clear communication, and the ability to mentor junior developers are standout soft skills for this role. These abilities ensure efficient delivery of robust, maintainable web applications and foster productive collaboration within development teams.

What are some common challenges faced by Senior Python Flask Developers when working on large-scale applications?

Senior Python Flask Developers often encounter challenges such as managing complex codebases, ensuring scalability, and maintaining performance as applications grow. Integrating Flask with other technologies (like databases, caching systems, or third-party APIs) can introduce architectural complexities. Additionally, balancing rapid development with writing maintainable, well-tested code is crucial. Collaboration with frontend developers, DevOps, and QA teams is frequent, requiring strong communication and problem-solving skills.

What are Senior Python Flask Developers?

Senior Python Flask Developers are experienced software engineers who specialize in building web applications using the Python programming language and the Flask web framework. They are responsible for designing, developing, and maintaining scalable backend systems, APIs, and web services. In addition to strong coding skills, they often lead projects, mentor junior developers, and ensure best practices in code quality, security, and performance. Their expertise allows them to solve complex technical challenges and contribute to the overall architecture and success of software projects.

What is the difference between Senior Python Flask Developer vs Python Developer?

AspectSenior Python Flask DeveloperPython Developer
Required CredentialsBachelor's in CS or related, experience with Flask, REST APIsBachelor's in CS or related, basic Python knowledge
Work EnvironmentWeb development teams, startups, tech companiesSoftware development teams, startups, tech companies
Employer & Industry UsageTech firms, SaaS companies, startupsVariety of industries including finance, healthcare, tech
Search & Comparison IntentAdvanced roles, leadership, project scopeEntry to mid-level development, learning

The main difference between a Senior Python Flask Developer and a Python Developer lies in experience and responsibilities. Senior developers typically have more expertise in Flask, lead projects, and mentor junior staff, whereas Python Developers may focus on coding and basic application development. Both roles are essential in web development teams, but senior roles require deeper knowledge and leadership skills.

What are the most commonly searched types of Python Flask Developer jobs in Fairfax, VA? The most popular types of Python Flask Developer jobs in Fairfax, VA are:
What are popular job titles related to Senior Python Flask Developer jobs in Fairfax, VA? For Senior Python Flask Developer jobs in Fairfax, VA, the most frequently searched job titles are:
What job categories do people searching Senior Python Flask Developer jobs in Fairfax, VA look for? The top searched job categories for Senior Python Flask Developer jobs in Fairfax, VA are:
What cities near Fairfax, VA are hiring for Senior Python Flask Developer jobs? Cities near Fairfax, VA with the most Senior Python Flask Developer job openings:
Senior Python Flask Developer jobs near you
Infographic showing various Senior Python Flask Developer job openings in Fairfax, VA as of May 2026, with employment types broken down into 80% Full Time, 11% Part Time, and 9% Contract. Highlights an 53% Physical, 27% Hybrid, and 20% Remote job distribution, with an average salary of $145,123 per year, or $69.8 per hour.
Sr. Python Developer

Sr. Python Developer

Palnar

Mclean, VA • On-site

$123.50K - $166.20K/yr

Full-time

Posted 2 days ago

Job description

Technical Skills:
  • Strong Proficiency in Python programming language, including experience with frameworks such as Flask, Django, and Fast API.
  • Experience with RESTful APIs and microservices architecture, and an understanding of how to design and implement them effectively.
  • Back End Skills: Python, Django/Flask/Fast API, NumPy, pandas and Relational Database.
  • Refactoring Skills: Knowledge of how to refactor code to improve its quality, maintainability, performance, and scalability while preserving its functionality.
  • Build CI CD Tools: Gradle, Jenkins, git, Conda, pip, Jira, Gitlab, Confluence.
  • DevOps: Linux & Docker.

Must Haves: Python, Rest API (Flask or Fast API), Pandas or NumPy.

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