Parexel International Corporation

AI Engineer, Agent/Platform Tracks

Parexel International Corporation
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1 month ago
Remote, India +2 moreMid Level

Responsibilities

  • Implement specialized pharmacovigilance agents using system prompts, model configuration, tool-use definitions, and defined agent boundaries.
  • Build and iterate prompt chains for source parsing, field extraction, MedDRA coding suggestions, causality assessment, narrative drafting, and E2B(R3) generation.
  • Develop deterministic ICH E2B validation, MedDRA hierarchy verification, and regulatory logic constraints alongside LLM outputs.
  • Create evaluation datasets, annotated ground-truth cases, edge-case libraries, and regression test suites with pharmacovigilance experts.
  • Develop and maintain Model Context Protocol servers and secure integrations with enterprise applications, APIs, databases, and services.
  • Run accuracy benchmarks, analyze failure modes, and improve prompts and agent configurations against defined thresholds.
  • Implement quality-control cross-verification using separate Claude instances, comparison algorithms, and confidence scoring.
  • Build human-in-the-loop reviewer interfaces and feedback pipelines for accept, modify, and reject decisions.

Requirements

  • At least 3 years of software engineering experience, including at least 1 year building applications that use LLM APIs.
  • Production proficiency in Python.
  • Experience building and evaluating NLP or LLM-based systems with measurable quality metrics.
  • Experience with prompt engineering, including system prompts, few-shot examples, chain-of-thought patterns, and structured output formats.
  • Hands-on experience with LLM orchestration frameworks such as LangChain, LangGraph, or similar tools.
  • Experience with evaluation pipelines using precision/recall, confusion matrices, and threshold tuning.
  • Comfort with AWS services including S3, Lambda, and IAM; AWS Bedrock experience is preferred.
  • Strong written communication for documenting prompt decisions, evaluation results, and agent behavior specifications.
  • Bachelor's degree in computer science or a related field, or equivalent professional experience.
  • Preferred experience includes clinical NLP, medical coding or adverse-event extraction, MedDRA or ICD-10, OCR and document processing, and pharma, biotech, CRO, or healthcare IT.

Benefits

  • Flexible work environment and space to do one's best work.
  • Growth and continuous learning opportunities in large language models, prompt engineering, and healthcare AI.
  • Opportunity to influence clinical research safety systems and work with cross-functional domain and platform teams.

Tech Stack

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Parexel International Corporation

About Parexel International Corporation

10,000+ employees
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