Backend Python Jobs in Philadelphia, PA (NOW HIRING)

Roles & Responsibilities
1. Application Development & Architecture
Design, develop, and maintain full-stack web applications using Python frameworks (Django, Flask, FastAPI) for backend services
Build responsive, dynamic front-end interfaces using ReactJS / VueJS / Angular with component-based architecture
Develop and maintain API-driven web applications with RESTful and GraphQL endpoints
Implement Material Design and Bootstrap frameworks for consistent, modern UI/UX across applications
Write clean, maintainable, well-documented, and testable code following industry best practices
2. Database Design & Management
Design, optimize, and maintain database schemas using MySQL and/or MongoDB
Write complex SQL queries, stored procedures, and database migrations
Perform query optimization, indexing strategies, and database performance tuning
Ensure data integrity, backup strategies, and disaster recovery planning
3. Testing & Quality Assurance
Develop and execute comprehensive test plans, test cases, and test strategies for web applications
Implement automated testing frameworks using Python (pytest, unittest, Selenium, Playwright)
Perform functional, regression, integration, performance, and API testing
Set up and maintain CI/CD pipelines with automated test suites
Conduct code reviews and enforce coding standards across the team
Identify, document, and track defects through resolution using bug tracking tools (JIRA, Azure DevOps)
4. API Development & Integration
Design, develop, and test RESTful APIs and microservices
Create and maintain API documentation (Swagger/OpenAPI)
Integrate third-party APIs and services into existing applications
Implement API authentication, authorization, and security best practices (OAuth2, JWT)
5. Legacy System Support (PHP/JavaScript/jQuery)
Maintain and enhance existing PHP-based web applications
Work with legacy JavaScript/jQuery codebases, refactoring where appropriate
Migrate legacy systems to modern frameworks and architectures incrementally
6. Collaboration & Communication
Participate in Agile/Scrum ceremonies - sprint planning, daily standups, retrospectives, and demos
Collaborate with cross-functional teams including product owners, designers, and DevOps engineers
Provide technical mentorship and guidance to junior developers and analysts
Communicate technical concepts effectively to both technical and non-technical stakeholders
Create and maintain technical documentation, architecture diagrams, and runbooks
7. Technical Specifications & Design
Participate in design reviews and contribute to technical specifications
Translate business requirements into technical solutions and detailed design documents
Evaluate and recommend new technologies, tools, and frameworks to improve development efficiency
Ensure applications meet non-functional requirements - performance, scalability, security, and accessibility
8. DevOps & Deployment
Support application deployment processes and environment management
Work with containerization tools (Docker) and orchestration platforms
Monitor application health, troubleshoot production issues, and implement fixes
Maintain version control best practices using Git (branching strategies, pull requests, code reviews)
About Cognizant's IoT Practice:
Intelligent, IoT-enabled products will soon result in the proliferation of data and disrupt virtually all industries. To be successful, both large and small companies must leverage IoT capabilities by designing modern products that fundamentally connect people with processes. Within Cognizant IOT, we engineer industry-aligned, IoT-enabled products that merge industry needs with human drivers. Our intelligent products will revolutionize experiences and result in exciting, transformative outcomes. Without human-centered thinking, connected products are just standalone things-but with it, our modern connected products facilitate a unified way of life enjoyed by all.
Salary and Other Compensation:

• The annual salary for this position is between $92,000 - $118,000 + Bonus depending on experience and other qualifications of the successful candidate.
  This position is also eligible for Cognizant's discretionary annual incentive program, based on performance and subject to the terms of Cognizant's applicable plans.
  Benefits: Cognizant offers the following benefits for this position, subject to applicable eligibility requirements:

• Medical/Dental/Vision/Life Insurance
• Paid holidays plus Paid Time Off
• 401(k) plan and contributions
• Long-term/Short-term Disability
• Paid Parental Leave
• Employee Stock Purchase Plan
  Disclaimer: The salary, other compensation, and benefits information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.

*Please note, this role is not able to offer visa transfer or sponsorship now or in the future*

• Applications will be accepted until April 19th , 2026
• LI#- #LI-SC6

About usCognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, building the bridge between AI investment and enterprise value by building full-stack AI solutions for our clients. Our deep industry, process and engineering expertise enables us to build an organization's unique context into technology systems that amplify human potential, realize tangible returns and keep global enterprises ahead in a fast-changing world. See how at www.cognizant.com or @cognizant.
Additional employment information
Compensation information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.
Applicants may be required to attend interviews in person or by video conference. In addition, candidates may be required to present their current state or government issued ID during each interview.
Cognizant is an equal opportunity employer. Your application and candidacy will not be considered based on race, color, sex, religion, creed, sexual orientation, gender identity, national origin, disability, genetic information, pregnancy, veteran status or any other characteristic protected by federal, state or local laws.
If you have a disability that requires reasonable accommodation to search for a job opening or submit an application, please email [email protected] for roles based in the Americas or [email protected] for roles based in India.