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Senior Python Software Engineer Jobs in Fairfax, VA

Maxiom Technology

Senior Python Developer

Washington, DC · On-site

$137K - $185K/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 ...

MANTECH

Python Software Developer

Herndon, VA · On-site

$51.75 - $71.25/hr

MANTECH seeks a driven and mission-focused Python Software Developer to join our elite team based in Herndon, VA . In this role, you will contribute directly to innovative projects that support the ...

MANTECH

Python Software Developer

Herndon, VA · On-site

$51.75 - $71.25/hr

MANTECH seeks a driven and mission-focused Python Software Developer to join our elite team based in Herndon, VA . In this role, you will contribute directly to innovative projects that support the ...

MANTECH

Python Software Developer

Herndon, VA

$51.75 - $71.25/hr

MANTECH seeks a driven and mission-focused Python Software Developer to join our elite team based in Herndon, VA . In this role, you will contribute directly to innovative projects that support the ...

MANTECH

Python Software Developer

Herndon, VA · On-site

$51.75 - $71.25/hr

MANTECH seeks a driven and mission-focused Python Software Developer to join our elite team based in Herndon, VA . In this role, you will contribute directly to innovative projects that support the ...

MANTECH

Python Software Developer

Herndon, VA · On-site

$51.75 - $71.25/hr

MANTECH seeks a driven and mission-focused Python Software Developer to join our elite team based in Herndon, VA . In this role, you will contribute directly to innovative projects that support the ...

MANTECH

Python Software Developer

Herndon, VA

$51.75 - $71.25/hr

MANTECH seeks a driven and mission-focused Python Software Developer to join our elite team based in Herndon, VA . In this role, you will contribute directly to innovative projects that support the ...

ManTech International

Python Software Developer

Herndon, VA · On-site

$114K - $190K/yr

MANTECH seeks a driven and mission-focused Python Software Developer to join our elite team based in Herndon, VA . In this role, you will contribute directly to innovative projects that support the ...

ManTech International

Python Software Developer

Herndon, VA · On-site

$141K - $236K/yr

MANTECH seeks a driven and mission-focused Python Software Developer to join our elite team based in Herndon, VA . In this role, you will contribute directly to innovative projects that support the ...

ManTech

Python Software Developer

Herndon, VA · Remote

$114K - $190K/yr

MANTECH seeks a driven and mission-focused Python Software Developer to join our elite team based in Herndon, VA . In this role, you will contribute directly to innovative projects that support the ...

ManTech

Python Software Developer

Herndon, VA · Remote

$141K - $236K/yr

MANTECH seeks a driven and mission-focused Python Software Developer to join our elite team based in Herndon, VA . In this role, you will contribute directly to innovative projects that support the ...

BTree Solutions, Inc.

SR. PYTHON DEVELOPER

Reston, VA · On-site

$126K - $170K/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 ...

Palnar

Sr. Python Developer

Mclean, VA · On-site

$123K - $166K/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 ...

eSolutionsFirst, LLC

Sr. Python Developer

Mclean, VA · On-site

$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.

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All JobsPython Software Engineer JobsSenior Python Software Engineer JobsSenior Python Software Engineer Jobs in Fairfax, VA

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 Aug 24, 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 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 are the key skills and qualifications needed to thrive as a senior Python software engineer?

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 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.

Which senior Python software engineer job is in demand?

Senior Python software engineering roles are in high demand across industries such as technology, finance, and healthcare, especially for positions involving data analysis, machine learning, and web development. Skills in frameworks like Django or Flask, along with experience in cloud platforms and version control, enhance job prospects in this field.

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 August 2026, with employment types broken down into 1% As Needed, 86% Full Time, 9% Part Time, and 4% Contract. Highlights an 88% Physical, 4% Hybrid, and 8% Remote job distribution, with an average salary of $145,123 per year, or $69.8 per hour.

Senior Software Developer (Python - Backend)

DRC Systems

Mclean, VA • On-site

$50 - $60/hr

Contractor

Re-posted 21 days ago

Job description

 
Title: Senior Python Developer (Python – Backend)
Location: McLean, VA (5 days - Onsite)
 
Must Have Qualifications: 7+ years of backend development- Python required. Strong database skills-SQL Server or DB2, data extraction using Snowflake, and solid data analysis experience.
 
Basic Requirements:
·         7+ years of Python and microservices experience is a must.
·         5+ years of hands-on experience with SQL, including complex query analysis and optimization.
·         1 – 3 years of experience in integrating with Snowflake APIs and/or GraphQL for data extraction and manipulation.
·         7-10 years of IT experience in design, development, integration and testing of software solutions based on Python, REST/SOAP Webservices, and web development.
·         7-10 years of experience with relational databases including Sybase, SQL Server, and MySQL. Good knowledge and experience with database technologies such as SQL and NoSQL
·         Demonstrated ability to analyze and join large datasets across multiple sources.
·         Proficient in integrating with Snowflake APIs and/or GraphQL for data extraction and manipulation.
·         3-5 years of experience with managing, building, and deploying code through tools including Jira, Eclipse, GIT, Bitbucket, Gradle, Docker, and Jenkins.
·         3-5 years of experience designing and executing unit tests using python testing framework based on business requirements and functional specifications. 
·         Experience with popular Python frameworks such as Django, and FAST API.
·         In-depth understanding of the Python software development stacks, ecosystems, frameworks and tools such as Numpy, Scipy, Pandas, Dask, spaCy, NLTK, sci-kit-learn.
·         Bachelor’s degree in computer science or related field.