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Senior Python Software Engineer Jobs in Fairfax, VA

Leidos

Senior Python Developer

Chantilly, VA · On-site

$131K - $237K/yr

Join a growing team of security researchers and software engineers as we transition a ... Expertise in scripting (Python, shell scripting) * Expertise with Docker and container ...

Leidos

Senior Python Developer

Reston, VA · On-site

$131K - $237K/yr

Bachelor's degree in computer science, Software Engineering, Computer Engineering, or related field * Expertise in scripting (Python, shell scripting) * Expertise with Docker and container ...

Leidos

Senior Python Developer

Burke, VA · On-site

$131K - $237K/yr

Bachelor's degree in computer science, Software Engineering, Computer Engineering, or related field * Expertise in scripting (Python, shell scripting) * Expertise with Docker and container ...

Leidos

Senior Python Developer

Merrifield, VA · On-site

$131K - $237K/yr

Bachelor's degree in computer science, Software Engineering, Computer Engineering, or related field * Expertise in scripting (Python, shell scripting) * Expertise with Docker and container ...

Leidos

Senior Python Developer

Sterling, VA · On-site

$131K - $237K/yr

Bachelor's degree in computer science, Software Engineering, Computer Engineering, or related field * Expertise in scripting (Python, shell scripting) * Expertise with Docker and container ...

Leidos

Senior Python Developer

Springfield, VA · On-site

$131K - $237K/yr

Bachelor's degree in computer science, Software Engineering, Computer Engineering, or related field * Expertise in scripting (Python, shell scripting) * Expertise with Docker and container ...

Leidos

Senior Python Developer

Manassas, VA · On-site

$131K - $237K/yr

Bachelor's degree in computer science, Software Engineering, Computer Engineering, or related field * Expertise in scripting (Python, shell scripting) * Expertise with Docker and container ...

Leidos

Senior Python Developer

Herndon, VA · On-site

$131K - $237K/yr

Bachelor's degree in computer science, Software Engineering, Computer Engineering, or related field * Expertise in scripting (Python, shell scripting) * Expertise with Docker and container ...

Leidos

Senior Python Developer

Falls Church, VA · On-site

$131K - $237K/yr

Bachelor's degree in computer science, Software Engineering, Computer Engineering, or related field * Expertise in scripting (Python, shell scripting) * Expertise with Docker and container ...

Leidos

Senior Python Developer

Chantilly, VA · On-site

$131K - $237K/yr

Bachelor's degree in computer science, Software Engineering, Computer Engineering, or related field * Expertise in scripting (Python, shell scripting) * Expertise with Docker and container ...

TiltEdge Solutions LLC

Python Developer

West Mclean, VA · On-site

$65 - $70/hr

Senior Python Developer Location: Full-time on-site in McLean, VA Position: C2H Green Card or USC Local Candidates Only F2F In person Interview Must-Have Qualifications 5+ years of engineering ...

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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 Sep 14, 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 September 2026, with employment types broken down into 1% Internship, 1% As Needed, 82% Full Time, 14% Part Time, and 2% Contract. Highlights an 84% Physical, 3% Hybrid, and 13% Remote job distribution, with an average salary of $145,123 per year, or $69.8 per hour.

Senior Python Developer

Chantilly, VA • On-site

Leidos
IT Services • 10K+ employees
Learn more about Leidosexternal

$131K - $237K/yr

Full-time

Re-posted 15 days ago

Leidos rating

8.3

Company rating: 8.3 out of 10

Based on 154 frontline employees who took The Breakroom Quiz

Job description

Who We Are:
Kudu Dynamics is a Leidos owned company, forged out of a decade of experience in computer network operations and staffed with talent who have built, overseen, and enhanced capabilities throughout the entire USG arsenal. Our team of hackers, engineers, makers, and shakers have experience spanning centuries of research, development, and operations missions - across desktop, mobile, IoT, and embedded platforms. Kudu Dynamics is uniquely qualified to anticipate tomorrow's threats and build the next of capabilities.
Job Description:
Join a growing team of security researchers and software engineers as we transition a state-of-the-art IoT security solution from the lab to multiple customers. This role sits at the intersection of helping end users, developing new features, and coordinating with technical partners to integrate new datasets and technologies. This position can be in Columbia, Maryland or Chantilly, Virginia.
Minimum Requirements
  • US Citizenship with TS/SCI and Counter-Intelligence Polygraph clearance
  • 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 scripting)
  • Expertise with Docker and container orchestration (Nomad, Kubernetes, Docker Swarm)
  • Proficiency in software development in Python
  • Experience with infrastructure as code (Terraform, Ansible)
  • Experience delivering solutions on AWS
  • Experience with system monitoring, introspection, and visualization technologies (Grafana, Prometheus, ELK stack)
  • Experience with GitLab CI/CD
  • Experience working in an Agile Scrum development team
  • Database administration/development experience with PostgreSQL or similar
  • Experience supporting full-stack solutions including RESTful API and Angular-based web UI
  • Experience with networking protocols (TCP, UDP, HTTPS, TLS)
  • Experience with user management and onboarding new users
  • Experience with Twelve-Factor App methodology
  • Linux system administration experience
  • Self-starter requiring minimal supervision
  • Intelligent, proactive, and driven to achieve results

Specific Duties
  • Troubleshoot and maintain the deployed application
  • Onboard and managing new users
  • Actively search for and screen new data sources and technologies to meet program demands
  • Serve as primary point of contact for current and future data sources/technical partners
  • Set up technical exchange meetings and gather/catalogue data information
  • Understand security restrictions and access requirements

Education Requirements
  • BS/MS (BA/MA) in a technical degree field, plus a minimum of 4 years directly related experience
  • In lieu of a degree, 10 years of directly related experience

Technical Skills
  • Expertise with Linux system administration
  • Expertise in scripting (Bash, Python)
  • Expertise with container build tools (Docker, Buildah)
  • Expertise with Kubernetes (installing, managing, operating)
  • Experience with Kubernetes CD tools (FluxCD, ArgoCD)
  • Experience with infrastructure as code (Terraform, Helm)
  • Experience delivering solutions on AWS/Azure
  • Experience with system monitoring, introspection, and visualization technologies (Prometheus, Grafana, Loki, ELK stack)
  • Experience with GitLab CI
  • Experience with networking protocols (TCP, UDP, HTTPS, TLS); comfortable diagnosing and resolving networking issues

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.
Original Posting:
August 31, 2026
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Pay Range:
Pay Range $131,300.00 - $237,350.00
The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

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About Leidos

Sourced by ZipRecruiter

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainable practices. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community.

Industry

It services

Company size

10,000+ Employees

Headquarters location

Reston, VA, US

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