Great role definition mixes what the research has tested with what you only learn by doing it long enough to “just know.”
Great definitions
The most important thing to understand about a great role definition is that it is a rubric. Down the road, after definition, members of your team will collect evidence each candidate does or does not have the competencies you’ve laid out. You’ll do this through research, interviewing, take-home assignments, informal walks or meals, and reference interviews. Each person on your team must be able to mechanically and consistently score candidates based on your role definition document. Why? Structured judgment works: assign each person a set of competencies to evaluate and have them score them (1-5) independently, in writing with a sentence or two of evidence per score. But when it comes to combining the evidence and deciding, humans are hot garbage: add the scores up and let the total decide, because the moment the debrief meeting starts “synthesizing” holistically, you have reintroduced exactly the failure the research documents [2].
A great role definition is also formal: written down, the product of a deliberate procedure, not the hiring manager’s off-the-cuff sense of the role. When researchers measured which interviews actually predict job performance, the winners were structured interviews: built on a real, written definition of the job, with standardized questions and scoring [3]. Structured interviews predict performance about twice as well as interviews run off someone’s rough sense of the role [4]. And the structure starts with the written definition. When researchers taxonomized what makes an interview structured, a formal definition of the job was the foundation [3].
Great role definitions are outcomes-based, not function, activity, or generally desirable human traits-based. Start with asking yourself what someone in the role you’re defining will need to accomplish in twelve to eighteen months in the future. The novice version is “we need a head of sales to run the sales team.” The expert version is “build the sales team from two individual-contributor reps who report to the CEO into its own organization capable of driving $XM in revenue, complete with operations, predictable forecasting, standardized compensation and quota, one or two reps consistently exceeding quota, and a hiring pipeline so we can scale the team to 20 within eighteen months.” Same hire. Wildly different clarity. Specific beats vague here, and not as a matter of taste: specific, demanding goals are one of the most replicated results in organizational psychology [5], and the outcomes you write down become the goals your new hire gets managed to [5]. Three to five outcomes, not twelve. When you can’t forecast a number yet, write a milestone (“a repeatable outbound process exists”) instead of false precision. A rubric built on fictional numbers is worse than a vague one, because it gives you a false sense of rigor. The test for every outcome you write: could two people independently agree, at month twelve, whether it happened?
They are derived, not borrowed. A chef does not cook from a recipe found somewhere and neither should you. ChatGPT, Claude, Google, and job descriptions from other companies can be valuable tools when defining roles, but they cannot be your only inputs. In addition to your company’s specific outcomes, a great role definition takes into account the necessary Competency Stack based on the level (C-suite, VP, director, manager, IC, etc.) of the role, your company’s values, your stage of company (at least by revenue and headcount), and the specific nature of the team they’ll be joining. Use an off-the-shelf job description written by someone else and expect an off-the-shelf hire designed to fit someone else’s company, not yours.
A great role definition is properly scoped. You have to ask yourself if this role should even be a role. Is it one, two, full-time, part-time, or contract?
A role definition must also be complete. It must outline what the new hire will accomplish (outcomes), how they will be evaluated, and what they will have independent authority to decide. The best way to write the authority section is two columns: day-one authority and full-charge authority, with the explicit condition that moves each item from the first column to the second (“after your first successful quarterly close, you own the forecast”). A definition document that lists an authority the hire won’t actually hold on day one is misleading at best and a recipe for resentment at worst.
But role definitions also need to be honest about human capability. No one is perfect. All people have flaws. Outlier talent will come with weaknesses. Truly great role definitions include and differentiate between must-have strengths and acceptable weaknesses.
And finally, the best role definitions act to close feedback loops collaboratively and transparently instead of opaquely. While the job of a role definition is to give managers a rubric for evaluating whether they’ve found the right person, it’s also to create alignment between a manager and the new hire. Use role definition documents to close the loop at a few different moments. First, ask each new hire to write, in their own words, what outcomes they think they’re responsible for, then sit down together and compare notes with the original role definition document — adapting an exercise Peter Drucker prescribed for one big reason: people fail in new assignments mostly by continuing to do what worked in the old one [6]. Second, pull it up at day 30, 60, and 90 to make sure you’ve found the right person. And finally, periodically check to see if it needs updating or editing, and make sure to communicate about any changes up, down, and across.
Great definers
The most important quality in a great role definer is patience. Role definition is an investment, and like any investment, it is subject to the J-curve. People avoid investing time and resources into role definition because they can’t see the return on their investment for a while. Trust that the payoff will come later, when the right person is in the right seat, avoiding a mis-hire and costly replacement process. Patience is essential because great definers know it can take a good bit of time to know what great looks like, a process that takes calibration calls and (often) trying the job yourself.
Truly excellent hiring managers excel at making the squishy legible (this one is so critical, it has its own hiring competency). The things you most want (and don’t want) in teammates are difficult to name. It is okay to prefer working with people you like being around. The things you prefer, appreciate, and admire about other people — in addition to the things that drive you nuts — matter. Great hiring managers take note of these positive and negative emotional cues, examine them more closely, name the specific behaviors that are either productive or counterproductive, and teach their team how to filter those qualities in or out. “I don’t think they’re a culture fit for some reason I can’t quite put my finger on” turns into “You maintain calm poise in stressful situations” [7].
The best leaders know who to include. Role definition is never a solitary process, but it also should not be a consensus one. Every new role has stakeholders. Collect input deliberately and widely, but the final call stays yours. The marketing team has opinions on sales, engineering has opinions on design and vice versa. Some of their opinions will be good, and others less so. Founders need to find a way to be involved in hiring without suffocating the leaders they hire. And leaders need to include their bosses and their peers. No department is a silo without someone making it one. Don’t be that person.
Great definers also hold a high bar for the relationship. Every role definition implies a relationship, and the relationship is a two-way street. Before the search opens, the hiring manager needs to answer one big question from my own hiring checklist: are you enthusiastic and realistic in your commitment to develop a relationship based on openness and trust, where both manager and direct report seek ways to help and enhance each other? Would you be excited to get lunch with them if they were in town? I see this go wrong constantly — managers who define a role, run the process, make the hire, and never intend to invest in the person on the other side of it. Or the new hire, deep down, doesn’t respect and admire their boss, so they undermine them. The definition document describes a job. An employee signs up to work for a manager. Don’t skimp on either.
Greatness here also requires each hiring manager to know they work within a system. Leaders, to a point, are entitled to lead how they want to lead, but each leader operates within the boundaries their company has defined more broadly. A company’s values (the company-wide layer of the Competency Stack) predate most managers at a company, and it is the responsibility of each leader to filter for them to ensure talent compatibility.
A real nuance great definers hold well is defining the transfer of power. After all, you can only delegate something if you’ve defined it up front. We hire people to do things someone is often already doing, even if poorly. To define a role is also to define how and when power — decision-making power, payroll-button-pushing power — will be fully transferred to the new person, and the right answer is rarely all of it on day one. I recommend using Tobi Lutke’s Trust Battery [8], the idea that someone on day one is likely at or around 50% of a “battery” charged with trust. Only by “charging” the battery fully do all of the role’s responsibilities get released. A lot of folks bristle at this, because it inherently communicates a lack of trust. But some things are worth protecting until you’re sure you’ve found the right person. Make sure to communicate about the conditions for transfer: that’s what the two authority columns in the definition are for. It’s okay for you to privately hold a measure of trust, but written conditions are essential (“own the forecast after your first clean quarter”).
Great definers recognize that things change. Startups move fast. A role defined on June 1st may have changed by the time someone starts on August 1st. I always think of Alfred Korzybski’s quote, “A map is not the territory it represents” [9]. Role definition documents are “maps.” The job someone does becomes “the territory.” Done well, our maps capture the territory well, but all territory is a bit different. Great managers (and their teams) know that things change, they notice when they do, they talk about it, and then they update their maps.
And while these last two traits belong to the evaluation phase, great definers own them anyway, because they close the loop back into definition. People great at defining roles also have a willingness to cut losses. A Talent Partner at A16Z once told me that the best hiring process in the world will still fail 30% of the time, and for executives that number is closer to 50% (executives are better at interviewing, the theory goes). I’ve found it to be reliable napkin math, and it isn’t far off what Peter Drucker said: one-third right, one-third minimally effective, one-third outright failures. No other area of management, he wrote, had such a poor record [6]. Hiring the wrong person is costly. It is even more costly when you keep them around for a year, let alone multiple years. Great leaders know that the first ninety days are an assessment period to validate or invalidate whether someone is capable of excelling at the role crafted for them.
But of course, great hiring managers also update the system upon failure. To have hired is to have fired, laid off, and lost sleep over it. Unless you’re a psychopath. All great leaders, upon letting someone go, sit down and think about what went wrong in the hiring process. What part of the role was ill-defined? And they use that to improve the process the next time around. And do the post-mortem with the team that helped build the rubric. They wrote it with you, and they should see whether it predicted reality.