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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