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Sr Python Developer Jobs in Washington (NOW HIRING)

Senior Python Engineer

Quantico, VA

$131K - $176K/yr

The Air Force Space and Intel Business Group of SAIC is seeking a Senior Python Engineer to support a transformational infrastructure program for DCSA. SAIC is proud to be supporting DCSA in ...

Senior Python Engineer

Quantico, VA · On-site +1

$131K - $176K/yr

The Air Force Space and Intel Business Group of SAIC is seeking a Senior Python Engineer to support a transformational infrastructure program for DCSA. SAIC is proud to be supporting DCSA in ...

Senior Python Engineer

Quantico, VA · On-site

$128K - $173K/yr

The Air Force Space and Intel Business Group of SAIC is seeking a Senior Python Engineer to support a transformational infrastructure program for DCSA. SAIC is proud to be supporting DCSA in ...

The Air Force Space and Intel Business Group of SAIC is seeking a Senior Python Engineer to support a transformational infrastructure program for DCSA. SAIC is proud to be supporting DCSA in ...

Python Developer

Reston, VA · On-site

$52.25 - $72/hr

Position Summary The Senior Python Developer will design, develop, test, and implement cloud native applications, data pipelines, and backend services within AWS. The role requires strong Python ...

Sr AWS Python Developer

Reston, VA · On-site

$126K - $170K/yr

Sr AWS Python Developer (2 positions) Location- Reston, VA (In person Client interview) day one onsite Experience : 8 to 18 years FTE or C2C We are looking for Visa independent candidates only for ...

Senior Spark & Python Developer

Mclean, VA · On-site

$122K - $165K/yr

In a senior developer role, you will design and build data flow and data integration processes to ... Drawing from your vast hands-on experience in Python (PySpark), Spark, REST, Java, and Scala, you ...

Senior Spark & Python Developer

Mclean, VA

$122K - $165K/yr

In a senior developer role, you will design and build data flow and data integration processes to ... Drawing from your vast hands-on experience in Python (PySpark), Spark, REST, Java, and Scala, you ...

Senior Spark & Python Developer

Mclean, VA · On-site

$122K - $165K/yr

In a senior developer role, you will design and build data flow and data integration processes to ... Drawing from your vast hands-on experience in Python (PySpark), Spark, REST, Java, and Scala, you ...

We seek to hire a Senior Python Developer who will be responsible for designing and building novel tools in the cybersecurity SOAR and SIEM space, utilized by our clients and security analysts to ...

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Sr Python Developer information

See Washington salary details

$62.3K

$160.8K

$220.9K

How much do sr python developer jobs pay per year?

As of Jun 20, 2026, the average yearly pay for sr python developer in Washington is $160,801.00, according to ZipRecruiter salary data. Most workers in this role earn between $137,600.00 and $185,200.00 per year, depending on experience, location, and employer.

What are the typical daily responsibilities of a Sr Python Developer?

As a Sr Python Developer, your daily tasks often include designing and coding complex features, reviewing code from team members, and troubleshooting bugs or performance issues. You may also lead technical discussions, contribute to architectural decisions, and collaborate closely with product managers, QA engineers, and other developers. Mentoring junior team members and staying up to date with best practices or new technologies is also a regular part of the role. This combination of hands-on engineering and leadership responsibilities ensures both the quality of the codebase and the continual growth of the team.

What are the key skills and qualifications needed to thrive in the Sr Python Developer position, and why are they important?

To thrive as a Sr Python Developer, you need expert proficiency in Python programming, strong problem-solving skills, and a solid background in computer science or related fields, often demonstrated by several years of relevant experience. Familiarity with frameworks like Django or Flask, version control systems such as Git, and sometimes certifications such as PCEP or PCAP are typically valued. Strong communication, leadership, and the ability to mentor junior developers are standout soft skills for this position. These combined proficiencies ensure that Sr Python Developers can build robust solutions, contribute to architectural decisions, and drive team success in complex technical environments.

What is a Sr Python Developer job?

A Sr Python Developer is an experienced software engineer who specializes in designing, developing, and maintaining applications using Python. They are responsible for writing clean, efficient, and scalable code while also mentoring junior developers and collaborating with cross-functional teams. Their role often includes optimizing application performance, integrating third-party services, and ensuring best coding practices. Additionally, they may work with frameworks like Django or Flask and databases such as PostgreSQL or MongoDB to build robust backend systems.

What job categories do people searching Sr Python Developer jobs in Washington look for? The top searched job categories for Sr Python Developer jobs in Washington are:
What cities in Washington are hiring for Sr Python Developer jobs? Cities in Washington with the most Sr Python Developer job openings:
Infographic showing various Sr Python Developer job openings in Washington as of June 2026, with employment types broken down into 94% Full Time, 2% Part Time, and 4% Contract. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution, with an average salary of $160,801 per year, or $77.3 per hour.
Senior Python Engineer

Senior Python Engineer

SAIC

Quantico, VA

$131K - $176K/yr

Other

Posted 10 days ago


SAIC rating

7.8

Company rating: 7.8 out of 10

Based on 78 frontline employees who took The Breakroom Quiz

70th of 204 rated it services


Job description

Description

Make a difference for national security by joining a team of dedicated IT professionals who will sustain, modernize and transform the enterprise IT capabilities of the Defense Counterintelligence and Security Agency (DCSA). The Air Force Space and Intel Business Group of SAIC is seeking a Senior Python Engineer to support a transformational infrastructure program for DCSA.

SAIC is proud to be supporting DCSA in safeguarding our nation's information. DCSA is the designated oversight authority on the accreditation of classified facilities, information systems, and the insider threat program. This involves security oversight of more than 10,000 companies and approximately 13,000 facilities involved in classified work throughout the DoD and 31 Federal agencies.

Specifically, on the DCSA One IT program, SAIC will provide an enterprise IT solution that delivers highly secured and adaptable IT infrastructure, provides customer support, an cutting-edge technologies that support operations and advance the DCSA mission under a single IT environment (i.e., One IT).

This position is on-site in Quantico, VA.

Job Description

• Develop, test, and maintain Python applications and services for the Gatekeeper system.

• Write clean, efficient, and maintainable code that aligns with project specifications and industry best practices.

• Implement new features and functionalities based on requirements and feedback from stakeholders.

• Ensure that all Python code and applications adhere to security best practices and compliance requirements.

• Conduct code reviews and participate in security audits to identify and mitigate potential security vulnerabilities.

• Assist in the development and enforcement of security policies and procedures related to the Gatekeeper system.

• Work closely with other developers, cybersecurity experts, and project managers to deliver high-quality solutions.

• Participate in design and architecture discussions, contributing ideas and solutions to improve system performance and security.

• Provide technical support and mentorship to junior engineers as needed.

• Develop and maintain unit tests and integration tests to ensure code quality and system reliability.

• Debug and resolve issues in a timely manner, ensuring minimal disruption to operations.

• Use automated testing frameworks to streamline the testing process and maintain continuous integration pipelines.

• Create and maintain comprehensive documentation for code, APIs, and system architecture.

• Document development processes, protocols, and procedures for future reference and onboarding purposes.

• Ensure documentation is clear, accurate, and up-to-date.

• Stay updated on the latest Python developments, tools, and best practices.

• Proactively seek opportunities to improve the Gatekeeper system's performance, security, and user experience.

• Participate in agile development processes, including sprint planning, stand-ups, and retrospectives.

Qualifications

It is required that the Senior Python Engineer have the following qualifications:

• Bachelor's degree in Computer Science, Software Engineering, or a related field.

• Nine (9) or more years of experience. Equivalent work experience may be considered in lieu of a degree.

• U.S. Citizenship and an active Top-Secret clearance.

• IAT-II Certification (i.e., Security + CE).

• Three (3) to five (5) years of hands-on experience in Python development, with a focus on security-related projects.

• Strong proficiency in Python programming and familiarity with its ecosystems.

• Experience with web frameworks such as Django or Flask.

• Familiarity with API development and integration.

• Knowledge of security best practices, including secure coding, encryption, and authentication.

• Experience with version control systems, particularly Git.

• Understanding of database technologies and ORM (Object Relational Mapping).

• Relevant certifications in Python, cybersecurity, or software development are a plus.

REQNUMBER: 2613494

SAIC is a premier technology integrator, solving our nation's most complex modernization and systems engineering challenges across the defense, space, federal civilian, and intelligence markets. Our robust portfolio of offerings includes high-end solutions in systems engineering and integration; enterprise IT, including cloud services; cyber; software; advanced analytics and simulation; and training. We are a team of 23,000 strong driven by mission, united purpose, and inspired by opportunity. Headquartered in Reston, Virginia, SAIC has annual revenues of approximately $6.5 billion. For more information, visit saic.com. For information on the benefits SAIC offers, see Working at SAIC. EOE AA M/F/Vet/Disability


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