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.

KEY RESPONSIBILITIES

Implement Python-based backend services (on FastAPI) for AI workloads, including LLM integration and generative AI pipelinesDevelop APIs and microservices for model serving and inference with guidance from senior team membersBuild 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 practicesIntegrate LLMs and generative AI models into production systems using frameworks like LangChain, Langfuse, and litellmImplement monitoring, logging, and observability features for assigned backend servicesParticipate in code reviews and contribute to team knowledge sharingDebug and resolve production issues with support from senior engineersCollaborate with cross-functional teams to understand requirements and deliver features

BASIC QUALIFICATIONS

2-4 years of professional software engineering experience or equivalentStrong proficiency in Python for backend development in production environmentsUnderstanding 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 architectureFamiliarity with containerization (Docker) and version control (Git)Bachelor's degree in Computer Science, Engineering, or related field, or equivalent practical experienceStrong problem-solving skills and attention to detail

PREFERRED QUALIFICATIONS

Hands-on experience building APIs for AI/ML workloads in productionExperience with FastAPI or similar Python web frameworksFamiliarity with Langfuse for LLM observabilityKnowledge of CI/CD practices and automated testingUnderstanding of database systems (SQL and NoSQL)Experience with event-driven architecturesStrong 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.

Égalité des chances & Emploi 

Nous croyons que des équipes diversifiées et inclusives sont essentielles à la réussite d'une entreprise. En tant qu'employeur, Pfizer s'engage à valoriser la diversité et l’inclusion sous toutes ses formes. Cette diversité se reflète également à travers les patients et les communautés que nous servons. Ensemble, continuons à bâtir une culture qui encourage, soutient et responsabilise nos employés.

Handicap & Inclusion

Notre mission est de libérer le potentiel de nos collaborateurs et nous sommes fiers d'être un employeur inclusif pour les personnes handicapées, garantissant ainsi l'égalité des chances en matière d'emploi pour tous les candidats. Nous vous encourageons à donner le meilleur de vous-même en sachant que nous apporterons tous les ajustements raisonnables pour soutenir votre candidature et votre carrière future. Votre expérience avec Pfizer commence ici !

Information & Business Tech