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Senior Python Flask Developer Jobs in Fairfax, VA

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 ...

Saransh Inc

Sr. Python Developer with Spark and AWS

Mclean, VA · On-site

$122K - $165K/yr

Role: Sr. Python Developer Location: McLean, VA (Hybrid - 3 days a week onsite) Job Type: Contract Required Skills: Python, Spark, AWS (S3, Lambda, IAM, SG etc.), AWS IAM Idaas Qualifications: * Min ...

Palnar

Sr. Python Developer

Mclean, VA · On-site

$123K - $166K/yr

Master's degree in Computer Science, Software Engineering or related technical field Demonstrated knowledge of: * Python, Pandas and other popular Python libraries * Java * Testing frameworks such as ...

Leidos

Senior Python Developer

Chantilly, VA

$131K - $237K/yr

Four years of experience in a Python Development role * Bachelor's degree in computer science, Software Engineering, Computer Engineering, or related field * Expertise in scripting (Python, shell ...

Leidos

Senior Python Developer

Merrifield, VA · On-site

$131K - $237K/yr

Four years of experience in a Python Development role * Bachelor's degree in computer science, Software Engineering, Computer Engineering, or related field * Expertise in scripting (Python, shell ...

Leidos

Senior Python Developer

Burke, VA · On-site

$131K - $237K/yr

Four years of experience in a Python Development role * Bachelor's degree in computer science, Software Engineering, Computer Engineering, or related field * Expertise in scripting (Python, shell ...

Leidos

Senior Python Developer

Chantilly, VA · On-site

$131K - $237K/yr

Four years of experience in a Python Development role * Bachelor's degree in computer science, Software Engineering, Computer Engineering, or related field * Expertise in scripting (Python, shell ...

Leidos

Senior Python Developer

Reston, VA · On-site

$131K - $237K/yr

Four years of experience in a Python Development role * Bachelor's degree in computer science, Software Engineering, Computer Engineering, or related field * Expertise in scripting (Python, shell ...

Leidos

Senior Python Developer

Chantilly, VA · On-site

$131K - $237K/yr

Four years of experience in a Python Development role * Bachelor's degree in computer science, Software Engineering, Computer Engineering, or related field * Expertise in scripting (Python, shell ...

Leidos

Senior Python Developer

Herndon, VA · On-site

$131K - $237K/yr

Four years of experience in a Python Development role * Bachelor's degree in computer science, Software Engineering, Computer Engineering, or related field * Expertise in scripting (Python, shell ...

Leidos

Senior Python Developer

Chantilly, VA · On-site

$131K - $237K/yr

Four years of experience in a Python Development role * Bachelor's degree in computer science, Software Engineering, Computer Engineering, or related field * Expertise in scripting (Python, shell ...

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All JobsPython Flask Developer JobsSenior Python Flask Developer JobsSenior Python Flask Developer Jobs in Fairfax, VA

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 Aug 15, 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 is a senior Python Flask developer?

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 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 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 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 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:

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Cities near Fairfax, VA with the most Senior Python Flask Developer job openings:

Senior Python Flask Developer jobs near you

Python Developer

Interon IT Solutions

Reston, VA • On-site

$52.25 - $72/hr

Contractor

Re-posted 20 days ago

Job description

Job title: 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 Developer with Container (EKS) & AWS experience. Reston, VA only, not open for Plano or remote. 

Role: Python Developer

Location: Reston, VA (3x week hybrid – Tues, Thurs, Fri) 

Must-Haves:

  • Python - Strong Python programming & development skills are required for this role, this role will be leveraging Python to help develop templates and harness AWS services within Python; Extensive Python skills needed; Not so much automating but moreso leveraging Python from development standpoint as it relates to their
  • AWS – Strong hand’s on experience with standard AWS services
  • Containerization – Strong understanding of how containers work, error messages, etc.. strong containerization background
  • EKS – Team is migrating this application from EC2 to EKS (Elastic Kubernetes Service), so someone with hand’s on experience/familiarity with EKS

Nice to Haves:

  • Other DevOps/CI Tools – Gitlab, Terraform (more of a plus)
  • Other Programming – Java, J2EE or any other programming language

Notes:

  • This is a developer role, not a DevOps role
  • Team is responsible for CI/CD tools, multiple tools they own/handle – they own majority of end-to-end DevOps tools in Fannie Mae environment from tooling standpoint (not as an end users but they customize these tools end to end – GitLab, Terraform, Jenkins, etc..) but EKS is the primary focus of this team right now
  • Develop enhancements & customization (generally in Python & other scripting languages) to support FM centric changes, governance, etc..
  • We are part of DevOps engineering group but we’re looking for developer to come in and a.) take over development aspect of changes they are making and b.) strong understanding of AWS (specifically to EKS), majority of our application is migrating from EC2 to EKS so this is a highly visible scope of work
  • DevOps resumes are NOT what we are looking for, this is moreso a Developer role
    • Primarily expertise in Python
    • Working as part of a development team previously
  • Developing to enhance application and to enhance functionality of platform – all platform (templates/executions) all done in Python
  • Heavy container environment, people should be able to understand base images, how it impacts the pipeline, etc.. providing optimized CI/CD pipelines for the enterprise through development
  • Because of scale of the platform (2000 runners migrating to EKS clusters), need tp understand how EKS clusters work, how it impacts CI/CD pipelines
  • Not doing any build-deploy work, we refine the build-deploy functionality for our DevOps engineers .. develop the platform to enable CI/CD capabilities for the rest of the enterprise