Lead Build Engineer, AI-Driven Production Systems

Pfizer Belgium; Austin (TX); Hybrid; USD 177,000 - 294,000; Full time

Benefits offered by this job

401(k) Matching

Health insurance

Paid time off

Job summary

Pfizer is seeking an experienced Build Engineer to own hands-on software engineering for the Medical Affairs AI Acceleration portfolio. You will turn product requirements into production-grade AI systems and ship end-to-end solutions.

This is an individual-contributor role with strong emphasis on code and architecture quality. You will collaborate with Solution Architecture, Data Integration, Product Management, and UX to deploy MVPs and production-grade systems, ensuring AI-generated code is

Qualifications

• Bachelor's degree in Computer Science, Engineering, or related field.
• 8+ years of hands-on software engineering experience.
• Experience building and shipping production software across the full stack.
• Experience integrating AI/ML or LLM-based capabilities into production systems.
• Experience taking prototypes/MVPs through to production-grade systems.
• Experience with modern cloud architecture (AWS or Azure) and CI/CD.
• Experience with Agile/Scrum delivery and strong code-review discipline.
• Experience designing and optimizing LLM/agent prompts for production efficiency.

Responsibilities

• Build, test, and ship production-grade software across the stack.
• Integrate Agentic AI, LLM-based capabilities, and RAG pipelines into products.
• Take validated prototypes to production-grade systems with proper gates.
• Write and maintain code meeting engineering standards and documentation.
• Document APIs and design decisions for maintainability and knowledge sharing.

Skills

Hands-on software engineering

AI/ML integration

Full-stack development

Cloud (AWS/Azure)

CI/CD

Agile/Scrum

Code review & verification

LLM prompts & workflows

Education

Bachelor's degree in Computer Science, Engineering, or related field

Tools

Veeva CRM

Salesforce Life Sciences Cloud

Salesforce Marketing Cloud

LLMOps tooling

Vector databases

RAG pipelines

Job description

Pfizer is seeking an experienced Build Engineer to own hands-on software engineering for the Medical Affairs AI Acceleration portfolio. You will turn product requirements into production-grade AI systems and ship end-to-end solutions.

This is an individual-contributor role with strong emphasis on code and architecture quality. You will collaborate with Solution Architecture, Data Integration, Product Management, and UX to deploy MVPs and production-grade systems, ensuring AI-generated code is