Staff Software Engineer

Join to apply for the Sr. Manager- AI Backend Python Engineer (Staff Software Engineer) role at Pfizer 4 days ago Be among the first 25 applicants Role Description The AI Backend Python Engineer (Staff) will provide technical leadership and define the architecture for backend systems that power the next generation of generative AI applications and large language model (LLM) integrations. This role focuses on driving strategic technical direction, designing platform-level solutions using Python, FastAPI, and AWS, and influencing engineering practices across the organization. Key Responsibilities Define technical strategy and architecture for Python-based AI backend platforms (on FastAPI) that support LLM integration, generative AI pipelines, and AI agent orchestration Architect scalable, reliable, & secure systems on AWS infrastructure (Lambda, EKS) that serve as the foundation for multiple teams Drive technical decisions that impact organization-wide engineering practices and platform capabilities Design and champion AI system observability using LangChain, Langfuse, and litellm Establish engineering standards for monitoring, logging, observability, and operational excellence across AI backend services Lead cross-functional initiatives to optimize performance, security, & scalability of large-scale AI applications Mentor and technically guide engineers at all levels, elevating team capabilities through code reviews, architecture reviews, & technical leadership Identify technical debt, performance bottlenecks, and architectural limitations; drive long‑term solutions Collaborate with engineering leadership, product, & other stakeholders to align technical strategy with business objectives Influence technology choices, design patterns, & best practices across the AI Software & Operations department Represent the team in organization-wide technical discussions and drive adoption of innovative solutions Basic Qualifications 7+ years of professional software engineering experience with extensive backend & distributed systems expertise Deep expert-level proficiency in Python for building large-scale production systems Comprehensive understanding of LLMs, generative AI architectures, & AI infrastructure (LangChain, litellm, Langfuse, OpenAI/Anthropic APIs) Proven track record of architecting & delivering complex, scalable platforms on AWS Expert knowledge of microservices architecture, distributed systems design, & event-driven architectures Demonstrated experience with containerization, orchestration (Docker/Kubernetes), & cloud-native patterns Strong history of technical leadership, mentoring engineers, & driving organizational impact Bachelor's or Master's degree in Computer Science, Engineering, or related field, or equivalent practical experience Excellent strategic thinking & ability to balance short-term delivery with long-term architectural vision Preferred Qualifications Extensive experience designing & building platform-level infrastructure for AI/ML workloads at scale Deep expertise in FastAPI, asynchronous Python, & high-performance backend systems Proven track record of architecting event-driven & real-time systems for AI applications Experience influencing engineering culture, establishing best practices, & driving technical standards Strong background in MLOps, model deployment strategies, & AI system reliability Expertise with infrastructure-as-code, CI/CD automation, & platform engineering Experience working with product & business stakeholders to translate requirements into technical strategy History of leading cross-functional technical initiatives with measurable organizational impact Published technical work, open-source contributions, or recognized expertise in AI backend systems Exceptional communication & influence skills across all levels of the organization 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 Seniority level Mid-Senior level Employment type Full-time Job function Engineering and Information Technology Industries Pharmaceutical Manufacturing We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI. #J-18808-Ljbffr