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Senior Backend Developer Python Jobs in Ashburn, VA

Aretum

Backend Developer - Contingent

Mclean, VA · On-site +1

As a Backend Developer you will be responsible for providing expert technical support, maintenance ... The ideal candidate leverages strong backend development expertise in Python, AWS, RESTful APIs ...

Aretum

Backend Developer - Contingent

Mclean, VA · Remote

As a Backend Developer you will be responsible for providing expert technical support, maintenance ... The ideal candidate leverages strong backend development expertise in Python, AWS, RESTful APIs ...

Aretum

Backend Developer - Contingent

Mclean, VA · Remote

As a Backend Developer you will be responsible for providing expert technical support, maintenance ... The ideal candidate leverages strong backend development expertise in Python, AWS, RESTful APIs ...

Booz Allen Hamilton, Inc.

Back-End Developer

Mclean, VA · On-site

$86K - $198K/yr

Back-End Developer The Opportunity: As a back-end developer, you know that a good site or system ... Experience with Kotlin and Python * Experience writing source code for new applications or ...

Chenega MIOS

Mid Backend Developer

Vienna, VA · On-site

Python * JavaScript / Node.js * Java (for enterprise integrations and services) * Experience ... From entry-level employees to senior leaders, we believe theres always room to learn. We offer ...

Maxar

Senior Backend Developer, Data Platform

Reston, VA · Hybrid

$137K - $182K/yr

Minimum Qualifications: * 10+ years of professional software engineering experience, with strong backend development skills * Strong proficiencyinPython * Experience building backend systems, APIs ...

Chenega MIOS SBU

Mid Backend Developer

Vienna, VA · On-site

As a Mid Backend Developer, you will build software leveraging Esri's products and APIs to develop ... Python • Hands-on experience developing backend services using: JavaScript / Node.js • Hands-on ...

Chenega Corporation

Jr. Backend Developer

Vienna, VA · On-site

Python * JavaScript / Node.js * Java (for enterprise integrations and services) * Experience ... From entry-level employees to senior leaders, we believe there's always room to learn. We offer ...

Booz Allen Hamilton

Back-End Developer

Mclean, VA · On-site

$86K - $198K/yr

Back-End Developer The Opportunity: As a back-end developer, you know that a good site or system ... Experience with Kotlin and Python * Experience writing source code for new applications or ...

Mindlance

Modeler Developer - Python

Mclean, VA · On-site

$51.50 - $71/hr

Modeler Developer - Python Duration: 6 Months - Long Term Location: McLean, VA 22102 Fully Onsite ... Must be strong in both front end and back end. Knowledge and strong understanding of architecture ...

Chenega Corporation

Mid Backend Developer

Vienna, VA · On-site

Python * JavaScript / Node.js * Java (for enterprise integrations and services) * Experience ... From entry-level employees to senior leaders, we believe there's always room to learn. We offer ...

Chenega MIOS

Jr. Backend Developer

Vienna, VA · On-site

Python * JavaScript / Node.js * Java (for enterprise integrations and services) * Experience ... From entry-level employees to senior leaders, we believe theres always room to learn. We offer ...

Booz Allen Hamilton

Back-End Developer

Mclean, VA · On-site

$86K - $198K/yr

As a back-end developer, you know that a good site or system needs the right combination of clean ... Experience with Kotlin and Python * Experience writing source code for new applications or ...

Booz Allen Hamilton, Inc.

Back-End Developer

Mclean, VA · On-site +1

$86K - $198K/yr

Share Back-End Developer The Opportunity: As a back-end developer, you know that a good site or ... Experience with Kotlin and Python * Experience writing source code for new applications or ...

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All JobsBackend Developer Python JobsSenior Backend Developer Python JobsSenior Backend Developer Python Jobs in Ashburn, VA

Senior Backend Developer Python information

See Ashburn, VA salary details

$16.4K

$151.6K

$195.3K

How much do senior backend developer python jobs pay per year?

As of Aug 6, 2026, the average yearly pay for senior backend developer python in Ashburn, VA is $151,584.00, according to ZipRecruiter salary data. Most workers in this role earn between $148,800.00 and $171,300.00 per year, depending on experience, location, and employer.

What does a senior backend developer Python do?

A Senior Backend Developer Python designs, builds, and maintains the server-side logic and databases for web applications, primarily using the Python programming language. They are responsible for ensuring high performance, responsiveness, and security of applications, integrating with front-end elements, and working closely with other developers and stakeholders. Additionally, they often mentor junior developers, review code, and contribute to architectural decisions to ensure scalable and robust backend systems.

What is the difference between Senior Backend Developer Python vs Backend Developer Python?

AspectSenior Backend Developer PythonBackend Developer Python
Required Experience5+ years, leadership skills1-3 years, foundational skills
CertificationsRelevant certifications (e.g., AWS, Python)Optional, entry-level certifications
Work EnvironmentDesigning architecture, mentoringImplementing features, coding
ResponsibilitiesSystem design, team coordinationCode development, bug fixing

The main difference between a Senior Backend Developer Python and a Backend Developer Python lies in experience, responsibilities, and leadership. Senior developers typically lead projects and mentor others, while backend developers focus on coding and feature implementation. Both roles require strong Python skills and relevant certifications, but senior roles demand more experience and strategic involvement.

What are the key skills and qualifications needed to thrive as a senior backend developer Python?

To thrive as a Senior Backend Developer Python, you need deep expertise in Python programming, software architecture, and experience with databases and API development, usually supported by a computer science degree and several years of professional coding experience. Familiarity with frameworks like Django or Flask, cloud platforms (e.g., AWS, Azure), and version control systems such as Git is typically expected, along with knowledge of containerization tools like Docker. Strong problem-solving skills, collaboration, and clear communication set top performers apart in this role. These skills ensure the development of robust, scalable backend systems that meet business needs and support seamless integration with other technologies.

What are some common challenges faced by senior backend developers working with Python, and how can they be addressed?

Senior Backend Developers working with Python often encounter challenges such as ensuring high performance and scalability of applications, especially when dealing with large volumes of data or high user traffic. Managing dependencies and maintaining clean, modular codebases can also be demanding in complex projects. These challenges are typically addressed by leveraging advanced Python frameworks, implementing robust testing practices, and collaborating closely with DevOps and frontend teams to optimize system architecture and deployment pipelines. Continuous learning and staying updated with best practices in Python and backend development are also key to overcoming these obstacles.
What are the most commonly searched types of Backend Developer Python jobs in Ashburn, VA? The most popular types of Backend Developer Python jobs in Ashburn, VA are:
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Senior Backend Developer Python jobs near you
Infographic showing various Senior Backend Developer Python job openings in Ashburn, VA as of August 2026, with employment types broken down into 1% Internship, 87% Full Time, 4% Part Time, and 8% Contract. Highlights an 81% Physical, 5% Hybrid, and 14% Remote job distribution, with an average salary of $151,584 per year, or $72.9 per hour.

Backend Developer - Contingent

Aretum

Mclean, VA • On-site, Remote

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 7 days ago

Job description

Public Trust Eligibility Required
This is a contingent position, meaning employment is dependent upon the successful award of the associated contract to Aretum and completion of any required background investigation or security clearance verification.
About Aretum
Aretum is a mission-driven organization committed to delivering innovative, technology-enabled solutions to our customers across defense, civilian, and homeland security sectors. Our teams work at the intersection of strategy, technology, and transformation, helping agencies solve their most critical challenges. We believe in investing in our people and creating a culture where collaboration, inclusion, and professional growth are at the forefront.
Job Summary
Aretum is seeking a skilled and motivated Backend Developer. As a Backend Developer you will be responsible for providing expert technical support, maintenance, and enhancement of a client application within an Agile, sprint-based development environment. The ideal candidate leverages strong backend development expertise in Python, AWS, RESTful APIs, databases, and scalable data solutions to ensure application performance, availability, and integration with TypeScript-based front-end components.
Due to the nature of our work as a federal consulting organization, employees may be expected to handle Controlled Unclassified Information (CUI) and must adhere to applicable safeguarding and compliance requirements.
Responsibilities
  • Provide expert technical support to maintain the client application
  • Provide support for development, enhancements, accessibility, integration, optimization, and maintenance
  • Ensure availability and correct operations
  • Work within a sprint-based development cycle
  • Utilize knowledge of the AWS cloud environment, Python backend and TypeScript front-end

Requirements
  • 5 years of backend development experience
  • Bachelor's Degree (3 years of additional experience is acceptable in lieu of a degree)
  • Experience using modern software to prototype and deploy backend web applications
  • Experience using web programming languages (e.g., Ruby, Python) and web development frameworks (e.g., Django, Rails)
  • Experience developing and consuming web-based, RESTful APIs
  • Experience with relational and non-relational database systems
  • Proficiency with scalable search technology
  • Competence in handling and scaling large data sets and their storage
  • Experience using version control systems
  • Experience working in a team environment that uses agile methodologies
  • Experience authoring developer-friendly documentation
  • Experience communicating technical concepts to a non-technical audience

Travel Requirements
This is a remote position; however, occasional travel may be required based on project needs, client meetings, team collaboration events, or training sessions. Travel is expected to be less than 10% and will be communicated in advance whenever possible.
EEO Statement
Aretum is committed to fostering a workplace rooted in excellence, integrity, and equal opportunity for all. We adhere to merit-based hiring practices, ensuring that all employment decisions are made based on qualifications, skills, and ability to perform the job, without preference or consideration of factors unrelated to job performance.
As an Equal Opportunity Employer, Aretum complies with all applicable federal, state, and local employment laws.
We are proud to support our nation's veterans and military families, providing career opportunities that honor their service and experience.
If you require reasonable accommodation during the hiring process due to a disability, please contact hr@aretum.com for assistance.
Equal Opportunity Employer/Veterans/Disabled
U.S. Work Authorization
Applicants must be U.S. citizens or currently authorized to work in the United States on a full-time basis. This position supports a federal government contract and requires the ability to obtain and maintain a Public Trust or Suitability Determination, depending on the agency's background investigation requirements. Sponsorship is not available.
Benefits
  • Health Care Plan (Medical, Dental & Vision)
  • Retirement Plan (401k)
  • Life Insurance (Basic, Voluntary & AD&D)
  • Paid Time Off
  • Family Leave (Maternity, Paternity)
  • Short Term & Long-Term Disability
  • Training & Development

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