Senior Prompt Designer

LiveCareer is seeking an expert Senior Prompt Designer to architect, optimize, and operationalize the LLM systems powering our consumer-facing career tools. You will bridge the gap between advanced natural language processing and exceptional user experiences, ensuring our generative AI outputs are safe, personalized, and highly reliable.

Key responsibilities

• Design, prototype, and iterate complex system prompts, few-shot exemplars, and chain-of-thought structures for consumer AI experiences.
• Partner with LLM/Machine Learning Engineers and Product Managers to translate requirements into technical prompt specifications, optimizing for latency and costs.
• Architect evaluation frameworks to benchmark and guardrail LLM outputs against hallucination, bias, and tone drift.
• Develop standardized prompt frameworks, version-control workflows, and operational playbooks for distributed product teams.
• Monitor the evolving GenAI landscape to continuously improve product performance and model throughput.

Requirements

• 5+ years of professional experience in language technologies, computational linguistics, or software product development.
• 2+ years of hands-on experience shipping LLM-backed features to production, including the full prompt development lifecycle.
• Mastery of advanced prompt engineering techniques such as few-shot, chain-of-thought, ReAct, and prompt chaining.
• Deep familiarity with LLM evaluation tools and frameworks like RAGAS, LangSmith, or TruLens.
• Strong communication skills in English, with availability for collaboration in a global environment.

What we offer

• Private healthcare and mental health support resources.
• Multisport Plus card and access to a benefits cafeteria platform.
• Udemy Business access for professional development.
• Equity in the company.
• Home office reimbursement for equipment and internet expenses.
• Flexible work hours and the opportunity for workation within the EEA.