The AI Backend Python Engineer will develop backend systems for generative AI applications, focusing on Python and AWS integrations, building APIs, and ensuring code quality and performance while collaborating with teams.
Job Description
The AI Backend Python Engineer (SE II) will develop and maintain backend systems that power generative AI applications and large language model (LLM) integrations. This role focuses on implementing features for scalable, secure, and high-performance services using Python and AWS cloud infrastructure, with guidance from senior engineers.
This is an individual contributor role.
KEY RESPONSIBILITIES
BASIC QUALIFICATIONS
PREFERRED QUALIFICATIONS
Work location assignment : Remote
Pfizer is an equal opportunity employer and complies with all applicable equal employment opportunity legislation in each jurisdiction in which it operates.
Information & Business Tech
The AI Backend Python Engineer (SE II) will develop and maintain backend systems that power generative AI applications and large language model (LLM) integrations. This role focuses on implementing features for scalable, secure, and high-performance services using Python and AWS cloud infrastructure, with guidance from senior engineers.
This is an individual contributor role.
KEY RESPONSIBILITIES
- Implement Python-based backend services (on FastAPI) for AI workloads, including LLM integration and generative AI pipelines
- Develop APIs and microservices for model serving and inference with guidance from senior team members
- Build and maintain AWS-based infrastructure components for AI workloads (e.g., Lambda, EKS)
- Write clean, well-tested, and maintainable code following established patterns and best practices
- Integrate LLMs and generative AI models into production systems using frameworks like LangChain, Langfuse, and litellm
- Implement monitoring, logging, and observability features for assigned backend services
- Participate in code reviews and contribute to team knowledge sharing
- Debug and resolve production issues with support from senior engineers
- Collaborate with cross-functional teams to understand requirements and deliver features
BASIC QUALIFICATIONS
- 2-4 years of professional software engineering experience or equivalent
- Strong proficiency in Python for backend development in production environments
- Understanding of LLMs, generative AI concepts, and modern AI frameworks (e.g., litellm, LangChain)
- Experience with AWS services (Lambda, API Gateway, EKS)
- Knowledge of RESTful API design and microservices architecture
- Familiarity with containerization (Docker) and version control (Git)
- Bachelor's degree in Computer Science, Engineering, or related field, or equivalent practical experience
- Strong problem-solving skills and attention to detail
PREFERRED QUALIFICATIONS
- Hands-on experience building APIs for AI/ML workloads in production
- Experience with FastAPI or similar Python web frameworks
- Familiarity with Langfuse for LLM observability
- Knowledge of CI/CD practices and automated testing
- Understanding of database systems (SQL and NoSQL)
- Experience with event-driven architectures
- Strong communication skills and ability to work collaboratively in a team environment
Work location assignment : Remote
Pfizer is an equal opportunity employer and complies with all applicable equal employment opportunity legislation in each jurisdiction in which it operates.
Information & Business Tech
Top Skills
AWS
Docker
Eks
Fastapi
Git
Lambda
Langchain
Langfuse
Litellm
Python
Restful Apis
Pfizer Chennai, Tamil Nadu, IND Office
Chennai, India
Similar Jobs at Pfizer
Artificial Intelligence • Healthtech • Machine Learning • Natural Language Processing • Biotech • Pharmaceutical
The role involves designing and developing backend systems for AI applications, mentoring junior engineers, and ensuring high-performance and scalable services with AWS infrastructure.
Top Skills:
AWSDockerFastapiKubernetesLangchainLangfuseLitellmPython
Artificial Intelligence • Healthtech • Machine Learning • Natural Language Processing • Biotech • Pharmaceutical
The Manager, Fleet Engineer will develop and test AI prototypes, collaborate across teams, and ensure high-quality standards in solutions.
Top Skills:
AIJavaScriptPython
Artificial Intelligence • Healthtech • Machine Learning • Natural Language Processing • Biotech • Pharmaceutical
The Senior Central Monitor manages data integrity in clinical trials, implements risk-based monitoring, and ensures compliance with regulations. Responsibilities include system oversight, signal management, and collaboration with study teams for issue resolution.
Top Skills:
JavaOraclePl/SqlSASWindows
What you need to know about the Chennai Tech Scene
To locals, it's no secret that South India is leading the charge in big data infrastructure. While the environmental impact of data centers has long been a concern, emerging hubs like Chennai are favored by companies seeking ready access to renewable energy resources, which provide more sustainable and cost-effective solutions. As a result, Chennai, along with neighboring Bengaluru and Hyderabad, is poised for significant growth, with a projected 65 percent increase in data center capacity over the next decade.
