Skip to main content

Python Full-Stack Developer

00069295701

Job Description: Python Full-Stack Developer

Position Overview

We are seeking a Senior Python Developer to own end-to-end development and maintain scalable web applications across the full stack - from backend APIs and data layers to frontend interfaces and cloud deployment. This role requires strong ownership of technical decisions, the ability to mentor junior engineers and the judgment to balance pragmatic delivery with long-term maintainability.

Key Responsibilities

Core application development

  • Design, build, and maintain RESTful APIs using Python frameworks (e.g., FastAPI, Django, Flask)
  • Architect scalable, maintainable backend services and data models
  • Write clean, well-tested, production-grade code and enforce code quality through reviews
  • Optimize application performance, including query optimization and caching strategies.
  • Design and optimize relational (PostgreSQL) data models
  • Write efficient queries, manage migrations and ensure data integrity across services
  • Build and maintain CI/CD pipelines for automated testing and deployment
  • Work with containerization (Docker) and orchestration (Kubernetes) where applicable.
  • Write and maintain unit, integration, and end-to-end tests (pytest, unittest or equivalent)

Cross-functional & delivery

  • Communicate proactively with the client's technical and non-technical stakeholders on progress, risks, and design tradeoffs
  • Participate in sprint/PI planning and translate high-level or ambiguous requirements into concrete technical designs and acceptance criteria
  • Mentor junior developers on the team and review their code, particularly around AI-integration and validation logic

Required Qualifications & Skills

  • 5-8+ years of professional software development experience, with strong depth in Python (3.x)
  • Backend framework expertise -Django or FastAPI
  • Database expertise - strong SQL skills, experience with at least one relational database ( PostGres)
  • API design - REST Principles, authentication/authorization patterns (OAuth2, JWT)
  • Cloud platform experience - hands-on with AWS, Azure, or GCP (compute, storage, managed databases)
  • Version control & collaboration - Git, code review workflows or GitFlow branching strategies
  • Testing discipline - strong track record of writing maintainable, meaningful test coverage
  • CI/CD - experience building or maintaining pipelines
  • Strong communication skills - able to explain technical tradeoffs to non-technical stakeholders and write clear documentation
  • Problem-solving and debugging - comfortable diagnosing issues across the full stack, from frontend rendering to backend performance to infrastructure

Nice to Have

  • AI/LLM familiarity - exposure to integrating LLM APIs into application workflows
  • Prompt engineering - basic understanding of structuring prompts and structured/JSON output handling
  • RAG (Retrieval-Augmented Generation) - conceptual familiarity with embeddings, vector search, and grounding LLM outputs in retrieved data.
  • Containerization & Orchestration - Docker, Kubernetes
  • Microservices architecture experience.

About Cognizant: 
Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, bridging the gap 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, drive tangible outcomes and keep global enterprises ahead in a fast-changing world. See how at cognizant.ai 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.

Benefits that help you thrive and grow

Our benefits program is built with you in mind—so you can enjoy a fulfilling, balanced and healthy life.

a blue line drawing of a plant with leaves

Financial wellbeing

We regularly review market data to ensure compensation reflects the value you bring. Your benefits extend beyond pay and may include retirement plans, financial education, etc.

Stay Healthy Midnight Blue RGB

Physical and mental health

We empower you to prioritize your wellbeing through paid time off, flexible working where possible, healthcare plans, counselling, our Mental Health Allyship program and more. 

Build The Career You Want Midnight Blue RGB

Your career, your way

With 350,000+ roles at Cognizant, you’ll have opportunities explore new technologies, industries and locations—and build the skills you need to grow your career.

Making A Meaningful Impact Midnight Blue RGB

Real-world impact

Think about the biggest brands you rely on. Chances are, they rely on us to help strengthen their business. Here, you’ll turn bold ideas into solutions that improve lives everywhere.

Your path to Cognizant

Here’s what you can expect from our hiring process. Please keep in mind that it may vary by role and location. Explore our FAQs to learn more.

a person sitting at a table using a laptop

Step 1: Apply to the right opportunity

Find an open role that matches your skills and career goals and show us why you’re the person for the job. Don’t see the right opportunity? Consider joining our Talent Community.

a person holding a tablet and talking on the phone

Step 2: Connect with your recruiter

If one of our recruiters sees a fit, they’ll set up a short intro call to learn more about you and how your experiences and skills match the role.

a person smiling at a table with a laptop

Step 3: Show off your skills

If you and our team would like to continue the process, you’ll interview with our hiring team. Some roles may also require technical assessments and/or client interviews.

a group of people sitting around a table

Step 4: Decision time

Our team will then review each candidates’ potential to succeed in the role. This step may take some time because we want to find the right fit for both you and us—but you can count on us to keep you updated.

APJ Dez
Cognizant has given me the opportunity to thrive as a leader and as a person. The culture of recognition, the great benefits and the sense of community motivate me, and I strive to give my best every day.
Decree Olam Team Leader - Intuitive Operations & Automation
1 (2)
Cognizant has one of the best learning ecosystems you can ask for. From sponsored certifications to training platforms to mentorship, we have all that we need to grow.
Debashish Mishra SAP MM Developer
Apj Kate
I have the privilege of working with an amazing, diverse team with loads of international experience. It’s inspiring when we all bring our different thinking, skills and experience together to deliver great things.
Kate Wilson Technology Consulting Manager

Haven't yet found the right opportunity?

Get the latest updates on job opportunities, recruitment events and company news—tailored just for you!

Be in the know