Why This Job is Featured on The SaaS Jobs
This Senior Research Engineer role sits at a core bottleneck in modern AI SaaS: trustworthy model evaluation. For companies deploying frontier models to developers and enterprises, progress is only as real as the benchmarks, datasets, and measurement systems behind it. The listing signals a productised AI context where evaluation is not a side function but a platform capability used broadly across technical staff and leadership.
From a SaaS career perspective, the work builds durable leverage. Designing scalable evaluation infrastructure and interpretable analysis tooling maps directly to how AI features are shipped, monitored, and improved in production. Experience here translates across AI-first SaaS teams working on search, RAG, and agentic workflows, where measurement quality drives iteration speed, customer outcomes, and risk management.
This role is best suited to researchers who also think like software engineers and enjoy turning ambiguous “model quality” questions into repeatable systems. It fits professionals who are motivated by building shared internal platforms, collaborating across disciplines, and contributing artifacts that become organisational standards rather than one-off experiments. It also aligns with candidates who prefer work that combines methodological rigor with practical deployment constraints in enterprise-facing AI.
The section above is editorial commentary from The SaaS Jobs, provided to help SaaS professionals understand the role in a broader industry context.
Job Description
Who are we?
Our mission is to scale intelligence to serve humanity. We’re training and deploying frontier models for developers and enterprises who are building AI systems to power magical experiences like content generation, semantic search, RAG, and agents. We believe that our work is instrumental to the widespread adoption of AI.
We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. We like to work hard and move fast to do what’s best for our customers.
Cohere is a team of researchers, engineers, designers, and more, who are passionate about their craft. Each person is one of the best in the world at what they do. We believe that a diverse range of perspectives is a requirement for building great products.
Join us on our mission and shape the future!
Why this role?
Evaluation is critical to making progress in scaling intelligence. As models continue to become superhuman in many real-world use cases, we must continue to develop new techniques to accurately measure our models' performance on frontier capabilities. In this role, you are responsible for creating next-generation evaluation methods and scalable infrastructure to measure LLM progress.
As a Senior Research Engineer, Model Evaluation, you will:
Develop evaluation benchmarks, datasets, and environments for measuring the bleeding edge of model capabilities
Conduct research to push the state-of-the-art in LLM evaluation methods, including training LLM judges; improving evaluation efficiency; and scalably building high-quality datasets
Build scalable tools for investigating and understanding evaluation results that are used by all members of technical staff at Cohere, as well as leadership and our CEO
Learn from and work with the best researchers and engineers in the field
You may be a good fit if:
You enjoy pushing the limits of what LLMs are capable of, and you have built high-quality evaluation resources to measure those capabilities (datasets, simulators, environments, etc.)
You have a track record of developing new methods and/or data to evaluate LLMs, e.g. publications at top-tier conferences, popular benchmarks, etc.
You have deep experience building with and around LLMs, and you have built tools for analyzing and understanding their performance
You have strong software engineering skills
If some of the above doesn’t line up perfectly with your experience, we still encourage you to apply!
We value and celebrate diversity and strive to create an inclusive work environment for all. We welcome applicants from all backgrounds and are committed to providing equal opportunities. Should you require any accommodations during the recruitment process, please submit an Accommodations Request Form, and we will work together to meet your needs.
Full-Time Employees at Cohere enjoy these Perks:
🤝 An open and inclusive culture and work environment
🧑💻 Work closely with a team on the cutting edge of AI research
🍽 Weekly lunch stipend, in-office lunches & snacks
🦷 Full health and dental benefits, including a separate budget to take care of your mental health
🐣 100% Parental Leave top-up for up to 6 months
🎨 Personal enrichment benefits towards arts and culture, fitness and well-being, quality time, and workspace improvement
🏙 Remote-flexible, offices in Toronto, New York, San Francisco, London and Paris, as well as a co-working stipend
✈️ 6 weeks of vacation (30 working days!)
