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Senior Python Software Engineer Jobs in Ashburn, VA

Leidos is seeking a mid-level Python Software Engineer, who will be a member of a dynamic team in Gaithersburg, MD, working on the development/maintenance of software that improves aircraft runway ...

Leidos is seeking a mid-level Python Software Engineer, who will be a member of a dynamic team in Gaithersburg, MD, working on the development/maintenance of software that improves aircraft runway ...

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 ...

Senior Python Developer

Herndon, VA · On-site

$124K - $168K/yr

MANTECH seeks a driven and mission-focused Senior Python Developer to join our elite team based in ... Research software concepts, develop, and demo proof-of-concepts. * Collaborate with team members to ...

Senior Python Developer

Herndon, VA · On-site

$124K - $168K/yr

MANTECH seeks a driven and mission-focused Senior Python Developer to join our elite team based in ... Research software concepts, develop, and demo proof-of-concepts. * Collaborate with team members to ...

Senior Python Developer

Herndon, VA · On-site

$124K - $168K/yr

MANTECH seeks a driven and mission-focused Senior Python Developer to join our elite team based in ... Research software concepts, develop, and demo proof-of-concepts. * Collaborate with team members to ...

Senior Python Developer

Herndon, VA · On-site

$124K - $168K/yr

MANTECH seeks a driven and mission-focused Senior Python Developer to join our elite team based in ... Research software concepts, develop, and demo proof-of-concepts. * Collaborate with team members to ...

Senior Python Developer

Mclean, VA · On-site

$124K - $167K/yr

Java experience is nice to have Senior Python Developer Required Experience & Education * 7 -10 years of professional software development experience. * Bachelor's degree in computer science or a ...

Senior Python Developer

Mclean, VA · On-site

$124K - $167K/yr

Role: Senior Python Developer Location: McLean VA pre-submit tech screen + interview in person ... Indepth understanding of the Python software development stacks, ecosystems, frameworks and tools ...

New

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

Senior Python Developer

Herndon, VA · On-site

$141K - $236K/yr

MANTECH seeks a driven and mission-focused Senior Python Developer to join our elite team based in ... Research software concepts, develop, and demo proof-of-concepts. * Collaborate with team members to ...

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Senior Python Software Engineer information

See Ashburn, VA salary details

$56.2K

$145.2K

$199.4K

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

As of Jul 8, 2026, the average yearly pay for senior python software engineer in Ashburn, VA is $145,185.00, according to ZipRecruiter salary data. Most workers in this role earn between $124,200.00 and $167,200.00 per year, depending on experience, location, and employer.

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 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 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 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 job categories do people searching Senior Python Software Engineer jobs in Ashburn, VA look for? The top searched job categories for Senior Python Software Engineer jobs in Ashburn, VA are:
What cities near Ashburn, VA are hiring for Senior Python Software Engineer jobs? Cities near Ashburn, VA with the most Senior Python Software Engineer job openings:

Senior Software Developer (Python - Backend)

DRC Systems

Mclean, VA • On-site

$50 - $60/hr

Contractor

Posted 5 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.