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Senior Python Software Engineer Jobs in Fairfax, VA

Palnar

Sr. Python Developer

Mclean, VA · On-site

$123.50K - $166.20K/yr

Design, develop and support software solution for the given requirements within the financial ... Engineering or related technical field Demonstrated knowledge of: * Python, Pandas and other ...

CGI Inc.

Senior Python Developer with Spark

Reston, VA · On-site

$126.40K - $170.10K/yr

Software Development/ Engineering Main location: United States, Virginia, Reston Position ID:J0526-0018 Employment Type: Full Time U.S. - What we do matters By playing this video you consent to ...

eSolutionsFirst, LLC

Sr. Python Developer

Mclean, VA

$51.50 - $71/hr

Master s degree or foreign equivalent degree in Computer Science, Software Engineering or related ... Python, Python web technologies, e.g. Flask, Dash * Python data processing technologies, e.g.

EDCLUB, INC

Senior Software Engineer - Python

Rockville, MD · On-site +1

$124.90K - $164.60K/yr

... Software Engineer to join our agile and exceptionally talented engineering team. As a Senior ... Having extensive Python + Django experience is required. The project is unique as it is a well ...

EDCLUB, INC

Senior Software Engineer - Python

Rockville, MD · Remote

$124.90K - $164.60K/yr

... Software Engineer to join our agile and exceptionally talented engineering team. As a Senior ... Having extensive Python + Django experience is required. The project is unique as it is a well ...

Babel Street

Software Engineer III

Reston, VA · On-site

We are looking for a Senior Python Engineer with a "hacker" mindset to join our team as a Software Engineer III. This role is dedicated to large-scale web scraping and data harvesting. If you have ...

Babel Street

Software Engineer III

Reston, VA · On-site +1

$59.75 - $80.25/hr

We are looking for a Senior Python Engineer with a "hacker" mindset to join our team as a Software Engineer III. This role is dedicated to large-scale web scraping and data harvesting. If you have ...

Mindlance

Senior Python Developer

Mclean, VA

$124.60K - $167.70K/yr

Hands-on software development experience using Python programming * Candidate should be skilled in pandas and numpy Python libraries. * 2 3 years of experience using Git for source control in a team ...

Saransh Inc

Sr. Python Developer with Spark and AWS

Mclean, VA · On-site

$122.80K - $165.30K/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 ...

Navtech, Inc.

Senior Python Developer

Mclean, VA · On-site

$123.50K - $166.20K/yr

... software solutions for business and operational capabilities. • Solid experience as Python Developer Experience with Python frameworks e.g., Django, Flask. • Good experience on writing the test ...

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Senior Python Software Engineer information

See Fairfax, VA salary details

$56.2K

$145.1K

$199.3K

How much do senior python software engineer jobs pay per year?

As of May 29, 2026, the average yearly pay for senior python software engineer 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 Software Engineer, and why are they important?

To thrive as a Senior Python Software Engineer, you need advanced proficiency in Python programming, strong problem-solving abilities, and a solid background in computer science or a related field. Familiarity with frameworks like Django or Flask, experience with version control systems such as Git, and knowledge of cloud platforms and CI/CD tools are typically required. Leadership, effective communication, and mentorship skills help you collaborate with teams and guide junior developers. These skills ensure the delivery of robust, scalable software solutions and foster a productive, innovative development environment.

What are some common challenges faced by Senior Python Software Engineers when leading complex projects, and how can they be addressed?

Senior Python Software Engineers often face challenges such as balancing hands-on coding with mentoring junior team members, managing technical debt, and designing scalable solutions. Successfully addressing these challenges involves clear communication, proactive code reviews, and effective prioritization of tasks. Collaborating closely with cross-functional teams and fostering a culture of knowledge sharing can also help ensure project success and team growth.

What does a Senior Python Software Engineer do?

A Senior Python Software Engineer designs, develops, tests, and maintains complex software applications using the Python programming language. They often lead or mentor junior developers, architect software solutions, and ensure best coding practices are followed. These professionals collaborate with cross-functional teams to deliver scalable and efficient systems, troubleshoot issues, and optimize application performance. Their expertise includes advanced knowledge of Python frameworks, libraries, and development tools, as well as experience with databases, APIs, and cloud services.

What is the difference between Senior Python Software Engineer vs Python Developer?

AspectSenior Python Software EngineerPython Developer
Required CredentialsBachelor's degree in CS or related field, experience in software engineeringBachelor's degree in CS or related field, coding proficiency
Work EnvironmentDesigning complex systems, leading projects, mentoringWriting code, developing applications, debugging
Employer & Industry UsageTech companies, startups, enterprise softwareWeb development, data analysis, automation projects
Common Search & Comparison IntentUnderstanding senior-level roles, responsibilities, and skillsEntry to mid-level coding roles, project involvement

The main difference between a Senior Python Software Engineer and a Python Developer lies in experience, responsibilities, and scope. Senior engineers typically lead projects, design system architecture, and mentor junior staff, while Python Developers focus on coding, application development, and implementation. Both roles require strong Python skills and relevant credentials, but senior roles demand more experience and leadership capabilities.

What are popular job titles related to Senior Python Software Engineer jobs in Fairfax, VA? For Senior Python Software Engineer jobs in Fairfax, VA, the most frequently searched job titles are:
What job categories do people searching Senior Python Software Engineer jobs in Fairfax, VA look for? The top searched job categories for Senior Python Software Engineer jobs in Fairfax, VA are:
What cities near Fairfax, VA are hiring for Senior Python Software Engineer jobs? Cities near Fairfax, VA with the most Senior Python Software Engineer job openings:
Senior Python Software Engineer jobs near you
Infographic showing various Senior Python Software Engineer job openings in Fairfax, VA as of May 2026, with employment types broken down into 77% Full Time, 20% Part Time, 1% Temporary, and 2% Contract. Highlights an 86% Physical, 3% Hybrid, and 11% 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 26 days ago

Job description

Role and responsibility:
  • Interact with finance team and business side to collect the requirements
  • Design, develop and support software solution for the given requirements within the financial modeling and research area
  • Ensure new code and existing code updates meet standard technology development practices
  • Work with finance team and other developers to facilitate the reconciliation
  • Help customers to understand the result and to properly use the application
  • Assist in the operational execution of software solutions to assist with the monitoring and control of market and credit risks.

Educational Qualifications:
  • 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 pytest, junit
  • SQL
  • Linux, Docker
  • CI/CD Processes, git
  • Familiar with using IDEs such as intelliJ (for java and/or python)
  • Excel
  • Quantitative Finance (Optional)

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