Senior Prompt Architect for Global AI Workflows

AI Rudder; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

AI Rudder is seeking a Senior Prompt Engineer to lead the design, testing, improvement, and launch of prompts, AI workflows, and LLM-powered solutions for complex business use cases across multiple countries. You will work with product, engineering, data, operations, and regional teams to turn real business needs into scalable AI capabilities that are reliable, and measurable.

Success means AI outputs that are more accurate, consistent, and safe; prompts that are tested and documented before

Qualifications

• Bachelor's degree or above.
• 2+ years hands-on experience with LLMs, prompt engineering, or GenAI applications.
• Strong skills in prompt design, context engineering, and evaluation metrics.

Responsibilities

• Design and improve system prompts, user prompts, few-shot examples, output formats, tool-use instructions, and conversation flows for LLM applications, RAG systems, and automated workflows.
• Own prompt quality from prototype to production, including version control, regression testing, AB testing, evaluation criteria, launch checklists, and ongoing improvement.
• Build and maintain evaluation frameworks that measure task success, accuracy, groundedness, hallucination rate, safety, response time, token cost, user satisfaction, and business impact.
• Adapt prompts, workflows, tone, language, compliance requirements, and business logic to fit different markets and stakeholders.
• Work with regional teams, clients, product managers, solution architects, and data engineers to clarify requirements, manage dependencies, and deliver projects on tight timelines.
• Test prompts against risks such as prompt injection, jailbreaks, conflicting instructions, sensitive data leaks, unsafe responses, compliance gaps, and model failures.
• Create reusable prompt libraries, templates, documentation, and playbooks to help teams deliver faster across countries and projects.
• Stay up to date with developments in LLMs, RAG, model evaluation, model selection, and multimodal AI, and turn new capabilities into practical business solutions.

Skills

Prompt design

Context engineering

Instruction hierarchy

Output format design

A/B testing

Model evaluation

English and Mandarin

Cross-country coordination

Education

Bachelor's degree or above

Tools

RAG systems

OpenAI / Anthropic / Google Gemini

Vector search

Testing pipelines

Job description

AI Rudder is seeking a Senior Prompt Engineer to lead the design, testing, improvement, and launch of prompts, AI workflows, and LLM-powered solutions for complex business use cases across multiple countries. You will work with product, engineering, data, operations, and regional teams to turn real business needs into scalable AI capabilities that are reliable, and measurable.

Success means AI outputs that are more accurate, consistent, and safe; prompts that are tested and documented before