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Senior Prompt Designer – AI Clinical Products

Canada, Montréal Employment contract · Job Posted April 11, 2026
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Job Description

As a Senior Prompt Designer, you will play a defining role in shaping the quality, reliability, and evolution of MEDFAR's generative AI features — most notably CoeurWay, our AI-powered clinical scribe, and emerging AI capabilities within MYLE EMR. Reporting to the Director of UX, you will sit at the intersection of product, clinical quality, and AI craft, working closely with product designers, developers, QA, and client-facing teams to ensure that every AI-generated output meets the high standards required in a healthcare setting. This is a senior individual contributor role with a clear growth path toward mentoring and leading a prompt "engineering" practice as MEDFAR's AI product surface expands.

Job Responsibility

  • Audit and re-architect CoeurWay's existing monolithic prompts into a modular chain of focused, maintainable prompts
  • Lead the selection, evaluation, and pairing of language models to specific prompt tasks
  • Own the quality of AI-generated clinical outputs
  • Evolve and re-align our existing evaluation framework
  • Establish and maintain a systematic approach to output validation
  • Design and implement new prompts and evaluation suites to support new features
  • Collaborate with the GenAIOps to ensure prompts are production-ready
  • Develop a deep understanding of clinical workflows and the needs of healthcare providers
  • Stay current on the rapidly evolving LLM landscape
  • Contribute to internal documentation, standards, and best practices for prompt "engineering"
  • Mentor future prompt designers as the team grows

Requirements

  • 5+ years of professional experience in AI/ML, product development, computational linguistics, or a closely related field
  • 2+ years of hands-on prompt "engineering" experience in production LLM systems, ideally in a B2B SaaS or regulated industry context
  • Demonstrable experience decomposing complex prompts into modular, chained architectures
  • Experience designing or significantly improving LLM evaluation frameworks
  • Strong familiarity with frontier commercial LLM APIs
  • Experience working within or alongside healthcare, clinical, or life sciences domains is a strong asset
  • Proficiency in Python or another scripting language for building eval pipelines or prompt tooling is an asset
  • Experience with self-hosted or open-weight models is an asset
  • Advanced proficiency in English, both written and spoken
  • French is an asset
  • Candidates must reside in the province of Quebec

Nice to have

  • Experience working within or alongside healthcare, clinical, or life sciences domains
  • Proficiency in Python or another scripting language for building eval pipelines or prompt tooling
  • Experience with self-hosted or open-weight models
  • French language skills

What we offer

  • Remote work and flexibility
  • RRSP contribution
  • Healthcare insurance from day one
  • Paid time off: 3 weeks + 1 additional week between Christmas and New Year
  • Annual training allowance ($1,500)
  • An onboarding program
  • All IT equipment is provided
  • Internal growth opportunities
  • Support from a wellness and social committee
  • A company culture focused on transparency, collaboration, and innovation

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