Demo

Senior Python Developer

Fannie Mae
Reston, VA Full Time
POSTED ON 11/21/2025
AVAILABLE BEFORE 12/20/2025
Playing an essential role in the U.S. economy, Fannie Mae is foundational to housing finance. Here, your expertise can help fuel purpose-driven innovation that expands access to homeownership and affordable rental housing across the country. Join Fannie Mae to grow your career and help people find a place to call home.

Job Description

As a valued colleague on our team, you will design, develop, test, and/or maintain moderately complex hardware, technology, and/or processes.

THE IMPACT YOU WILL MAKE

Responsibilities

The Senior Python Developer role will offer you the flexibility to make each day your own, while working alongside people who care so that you can deliver on the following responsibilities:

  • Determine customer needs and create solution frameworks.
  • Design and develop moderately complex technical solutions.
  • Use a process-driven approach in designing solutions.
  • May maintain or oversee the maintenance of existing technical solutions.
  • Build and maintain robust microservices using Python (Flask or FastAPI).
  • Deploy and manage applications and services in AWS, ensuring scalability, security, and high availability.
  • Implement and maintain CI/CD pipelines with modern architecture principles and observability best practices.
  • Write testable, maintainable code with unit, integration, and end-to-end tests.
  • Work in an agile team to plan, design, and deliver high-quality software features.

Minimum Required Experiences

THE EXPERIENCE YOU BRING TO THE TEAM

  • 2 years

Skills

  • Determining causes of operating errors and taking corrective action
  • Experience defining and managing changes to documents, code, computer programs, websites, and other files to enable collaboration and ensure teams are working from the latest version
  • Working with people with different functional expertise respectfully and cooperatively to work toward a common goal
  • Product Testing including testing and evaluating software, usability testing, UAT, and using relevant product testing technology
  • Ability to frame ideas as systems and analyzing the inputs, outputs, and process
  • The group of skills related to Programming including coding, debugging, and using relevant programming languages
  • Communication including communicating in writing or verbally, copywriting, planning and distributing communication, etc.

Tools

  • Skilled in Python object-oriented programming

Desired Experiences

  • Bachelor degree or equivalent
  • Strong understanding of Python syntax, built-in data structures and OOP concepts.
  • Strong experience in Terraform, building and maintaining infrastructure as code (IaC) on AWS.
  • Hands-on experience with deploying and managing applications and services in AWS, ensuring scalability, security, and high availability.
  • Hands-on experience with AWS services, such as Lambda, API Gateway, S3, CloudWatch, IAM, RDS, ECS/EKS, and DynamoDB.
  • Deep understanding of API design and implementation.
  • Proficient with both SQL (PostgreSQL) and NoSQL (DynamoDB) databases.
  • Familiar with Git workflows, CI/CD pipelines, and containerization tools like Docker.
  • Knowledge of authentication and authorization protocols such as OAuth2 and JWT.
  • Strong debugging and troubleshooting skills.
  • Demonstrated ability to write clean, testable, and maintainable code, with a strong emphasis on implementing unit, integration, and end-to-end testing to ensure software quality and reliability

Qualifications

Education:

Bachelor's Level Degree (Required)

The future is what you make it to be. Discover compelling opportunities at Fanniemae.com/careers.

For most roles, employees are expected to work onsite on a regular basis at their designated office location. In-office work cadence is determined by your manager. Proximity within a reasonable commute to your designated office location is preferred unless the job is noted as open to remote.

Fannie Mae is an equal opportunity employer and considers qualified applicants for employment without regard to race, color, religion, sex, national origin, disability, age, sexual orientation, gender identity/gender expression, marital or parental status, or any other protected factor. Fannie Mae is committed to providing reasonable accommodations to qualified individuals with disabilities who are employees or applicants for employment, unless to do so would cause undue hardship to the company. If you need assistance using our online system and/or you need a reasonable accommodation related to the hiring/application process, please complete this form .

The hiring range for this role is set forth below. Final salaries will generally vary within that range based on factors that include but are not limited to, skill set, depth of experience, certifications, and other relevant qualifications. This position is eligible to participate in a Fannie Mae incentive program (subject to the terms of the program). As part of our comprehensive benefits package, Fannie Mae offers a broad range of Health, Life, Voluntary Lifestyle, and other benefits and perks that enhance an employee's physical, mental, emotional, and financial well-being. See more here .

Requisition Compensation

121000

to

158000

Salary : $121,000 - $158,000

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