Principal

Job Description

Job Description

Description

Everything we do at TDL is guided by SPICE : S ocially conscious, P ragmatic, I nventive, C atalytic, and E vidence-based. You can read more about us and our core values here .

We launched The Decision Lab to turn cutting-edge behavioral science into action that actually moves the needle for people and organizations.

Principals are the stewards of that mission : you’ll shape our thinking, guide our teams, and nurture partnerships that push the field forward. If you’ve led consulting engagements, grown client relationships, and built up the people around you—not just the P&L—you’ll feel right at home.

We’re drawn to minds that are bright, curious, and a little restless. Whether your toolkit leans on traditional management consulting acumen or psychology, what matters most is your drive to translate evidence into pragmatic solutions that work in the messy real world.

• Room to shape, not just follow. We build tailored solutions—no plug-and-play templates—so you’ll have genuine influence over methods and outcomes, without the pressure to reinvent the wheel every week.
• Collaborative, sharp teammates. You’ll work with people who balance rigor and empathy and who care as much about learning from each other as landing the next contract.
• Meaningful responsibility. Principals set direction on several projects at once and see ideas through to delivery, while still having the support of directors and specialized experts.
• Variety with purpose. From financial decision-making to digital health, our projects span sectors but share a common goal : translating evidence into impact that matters.

What you'll be working on

Principals work closely with Directors and Project Leaders in leading client engagements, including larger, multi-year efforts that are part of a portfolio of projects. They ensure that client needs are clearly defined, supervising activities throughout to ensure these needs are met, and maintaining alignment of expectations. Responsibilities typically include :

What we are looking for

We are looking for a candidate with professional experience in management consulting, behavioral science or psychology, including demonstrated ability leading a project or team. Key attributes of the ideal candidate include :

About the role

Work general takes place on-site at our sunny Saint-Henri office – we’re located 5 minutes from downtown, overlooking a canal, have the best coffee in the city and access to kayak & bike paths;