Senior Specialist - Architecture (AI Engineer with Codex Exp.)

Job Summary

Required Qualifications

• Strong software engineering fundamentals and proficiency in Python plus Java, Go, TypeScript (a strong plus)
• Experience of working with Codex
• Proven experience building LLM-powered applications in production, tooling integrations for agents, merchant systems, underwriting platforms, transaction stores, risk engines, CRM case tools, knowledge bases, and workflow engines
• Experience designing distributed systems and APIs (REST, RPC), plus event-driven patterns (Kafka, SQS, Pub/Sub)
• Solid understanding of data engineering basics (SQL, data modeling, feature engineering, data quality)
• Hand-on knowledge of cloud platforms (AWS, Azure, GCP), containers (Docker), orchestration (Kubernetes)
• Ability to write clean, testable, secure code, comfortable with code reviews and engineering rigor
• Experience with multi-agent systems, planning, verification, and autonomous workflow execution
• Familiarity with vector databases, hybrid search, and knowledge graphs
• Familiarity with model evaluation (offline evals, golden datasets, adversarial testing, regression harnesses, AB testing)

Key Responsibilities

• Agentic AI System Design Engineering
• LLM RAG Engineering for Payments Workloads
• ML Decisioning Integration
• Safety Compliance and Responsible AI
• Productionization MLOps LLMOps
• Collaboration Leadership