A Realistic Assessment of The Chief of Staff Role

Introduction

The Chief of Staff title has become one of the most discussed, most misunderstood, and most inconsistently applied roles in the corporate world. It is used to describe everything from a two-year rotational program inside a global investment bank, to the first operational hire at a Series A start-up. That breadth of application has created genuine confusion in the market, not just among candidates, but among the leaders who are hiring for these roles.

This paper is an attempt to bring clarity. Not by offering a single, tidy definition of what a Chief of Staff is, but by mapping the role as it actually exists across three distinct segments of the market: large institutional firms, mid-market businesses, and boutique or early-stage ventures. The responsibilities, talent pools, hiring dynamics, and career trajectories differ enormously between these segments, and treating them as interchangeable leads to poor hiring decisions, misaligned expectations, and wasted time on both sides.

We have spent years working at the intersection of operational leadership and financial services recruitment. This paper draws on that direct experience, alongside the patterns we observe repeatedly in mandates, candidate conversations, and the decisions made by leadership teams across these markets.

The Institutional Chief of Staff

Large Corporates, Investment Banks, and Global Firms

Within large institutional firms, the Chief of Staff role operates under a logic that is entirely different from the rest of the market. It is, in most cases, not a destination role. It is a developmental assignment: a deliberately structured period, typically lasting 18 to 24 months, designed to broaden a high-performing employee's exposure to leadership, strategy, and cross-functional decision making.

The intent behind these rotations is straightforward. The firm identifies someone who has built deep expertise in a particular function and places them in close proximity to senior leadership. The person serving as Chief of Staff is expected to contribute meaningfully during the rotation, but the strategic rationale for the appointment is long-term. It is a mechanism for building institutional leaders: broadening their perspective, exposing them to problems outside their home function, and deepening their understanding of how the firm operates at its highest level.

This model means that the talent pool for institutional Chiefs of Staff is wide, and deliberately so. A Chief of Staff inside a major bank might have spent the previous five or six years in FP&A, corporate strategy, transformation, program management, or marketing. The appointment is less about hiring a 'Chief of Staff' and more about moving a proven internal operator into a role that accelerates their development. Someone who spent five years in the FP&A function at Goldman Sachs, for example, might be promoted into a Chief of Staff position within the CEO's Office, bringing their financial rigor to bear on decision-making at the very top, while simultaneously gaining exposure to areas well beyond their prior scope.

Internal Promotions, Not Open Market Roles

A critical feature of the institutional market is that the vast majority of these roles never reach the open market. They are filled through internal promotion. The firm already knows the person, trusts their capability, and understands what they bring. The Chief of Staff appointment is the next move in a career that is already underway within the organization.

There are exceptions. Occasionally, a firm will run an external search because it wants a 'fresh eyes' perspective. This tends to happen when the leadership team recognizes that institutional thinking has become too entrenched, or when the firm is entering a phase of change that would benefit from outside experience. But these are deliberate exceptions to the norm, and they are typically framed as such internally. The distinction matters: a firm choosing to hire externally for a Chief of Staff role is usually making a statement about what it values in that specific moment, prioritizing fresh perspective and varied experience over deep institutional knowledge.

Lateral movement within this segment is uncommon. Research from McKinsey indicates that only around one in ten institutional Chiefs of Staff go on to take a lateral Chief of Staff role at another firm. The overwhelming majority move into a different leadership function within the same organization, which is precisely what the rotation was designed to achieve.

What This Means for the Market

For candidates, it is important to understand that the institutional Chief of Staff role is not, in most cases, something people pursue as an end goal. It is a rotation, a chapter within a longer career track, designed to move a high performer closer to their eventual destination. Nobody at this level is setting out to “become a Chief of Staff.” They are building a career within the firm, and the Chief of Staff rotation is one mechanism the organization uses to accelerate that trajectory. The implication is that these positions are earned through years of internal credibility, not through job boards or external applications.

For hiring managers and leadership teams, this segment presents a different kind of challenge. The difficulty is not finding a Chief of Staff; it is identifying the right internal candidate, structuring the rotation correctly, and ensuring that the person exits the role into a position that reflects what they have gained. Done well, the Chief of Staff rotation is one of the most effective leadership development tools available. Done poorly, it becomes a holding pattern that neither develops the individual nor serves the principal. 

The Mid-Market Chief of Staff

Scale-Ups and Growing Firms (500 to 5,000 Employees)

The mid-market is where the Chief of Staff role begins to operate on fundamentally different terms. These are firms that have outgrown start-up informality but do not yet have the infrastructure, talent bench, or institutional norms of a large corporate. They are often growing quickly, operating at a high level, and confronting problems that require senior operational thinking, but without the internal pipeline to promote someone into the role.

This is where external hiring becomes the norm rather than the exception. Mid-market firms frequently bring in a Chief of Staff from outside the business, and often from outside their industry. The rationale is different from the institutional model. The hire is not developmental. It is problem-driven. The leadership team has identified a set of challenges, whether strategic, operational, or organizational, and needs someone who can operate at a senior level, work closely alongside the CEO or a senior principal, and bring capability that the firm does not currently possess.

The Fresh Eyes Advantage

One of the defining features of mid-market Chief of Staff hiring is the value placed on external perspective. These firms often want someone who has seen how other organizations operate, who brings different frameworks, and who is not constrained by the way things have always been done internally. A candidate who has worked across two or three different sectors, or who has held operational roles in firms at different stages of growth, can be more valuable than someone with ten years in the same industry.

This dynamic also means that the mid-market is the segment where the widest range of candidates can credibly compete for Chief of Staff positions. People step into these roles from consulting, operations, business partnerships, program management, and a variety of other backgrounds. The common thread is not a specific function; it is a set of capabilities: the ability to operate in ambiguity, to manage upwards, and to translate between strategy and execution.

The Education Gap

There is a significant education challenge in this segment. Many leadership teams in the mid-market are hiring a Chief of Staff for the first time. They may have read about the role, seen it referenced in articles about high-growth firms, or heard about it from peers, but they do not have a clear, grounded understanding of what the role should look like in their specific context.

This creates real risk for everyone involved. A leader who does not fully understand what they need from a Chief of Staff is likely to write a vague job description, assess candidates against the wrong criteria, and ultimately hire someone who either underperforms or leaves within twelve months. It is one of the most common failure modes we see: a firm hires for the title rather than for the problem, and ends up with a mismatch that benefits neither party.

This is where experienced advisors, whether consultants, headhunters, or operational leaders who have done this before, play a critical role. The work is not just about finding candidates. It is about helping the hiring firm define the role: what problems it exists to solve, what authority it carries, how it fits within the existing leadership structure, and what success looks like twelve months in. Without that groundwork, even a strong candidate will struggle.

Assessing for the Role, Not the Background

A common mistake in mid-market Chief of Staff hiring is over-indexing on a candidate's technical background and under-assessing for the qualities that actually determine success in the role. A strong FP&A background, or consulting experience, or program management credentials may all be relevant, but none of them are sufficient on their own.

What distinguishes an effective Chief of Staff is not their prior function. It is their ability to operate without a clear playbook, to manage relationships with senior stakeholders who may be skeptical of the role, to synthesise information from multiple sources and present it in a way that drives decision-making, and to shift between strategic thinking and hands-on execution depending on what the situation demands. These are not qualities that appear on a CV in any straightforward way, which is precisely why they require deliberate assessment.

It is also worth noting that you do not need to have been a Chief of Staff in order to become one. Even at the mid-market level, many successful hires are people stepping into the title for the first time. The role draws from adjacent functions and from people whose career trajectory has prepared them for this kind of work, even if the title is new to them.

No Standard Career Path

Unlike roles such as CFO or Head of Operations, the Chief of Staff in the mid-market does not follow a predictable career ladder. It is not a role that most people set out to pursue. More often, it is a role that finds them: a leader identifies someone with the right combination of capability and disposition, and the Chief of Staff role becomes the vehicle through which that capability is deployed.

This absence of a defined career path contributes to the broader confusion in the market. Candidates are unsure whether the role is a step up, a lateral move, or a dead end. Hiring firms are unsure how to benchmark compensation, scope, or seniority. And the lack of standardization means that two Chief of Staff roles at similarly sized firms can look entirely different in practice. The market has not yet matured to the point where these questions have settled answers, and anyone operating in it needs to account for that ambiguity.

The Boutique and Start-Up Chief of Staff

Early-Stage Ventures, Boutique Firms, and Small Teams

At the smallest end of the market, the Chief of Staff role transforms again, and it looks very little like its institutional counterpart. In boutique firms and early-stage ventures, the Chief of Staff is less of a strategic advisor and more of an operational linchpin. These are environments where the distinction between strategy and execution barely exists, where the priorities shift weekly, and where the person closest to the founder or CEO is expected to fill whatever gap appears.

This is the segment where the phrase 'Chief of Everything' is most apt. The Chief of Staff here might spend the morning restructuring a financial model, the afternoon mediating a disagreement between two department heads, and the evening preparing materials for a board meeting. There is no fixed remit. The role is defined by proximity to leadership and by the willingness and ability to take on whatever the business needs at any given moment.

Operational First, Strategic Second

While all Chief of Staff roles involve some degree of operational work, the balance shifts decisively in smaller firms. At the institutional level, the role is predominantly strategic: working on firm-wide initiatives, supporting capital allocation decisions, or managing cross-functional programs. In the boutique and start-up space, the role is predominantly operational: ensuring that the business runs, that nothing falls through the cracks, and that the principal can focus on the highest-value work.

There are strategic elements, of course. A Chief of Staff in a start-up will often contribute to fundraising preparation, investor relations, or market positioning. But these activities sit alongside, and are frequently interrupted by, the day-to-day realities of running a small, fast-moving business. The person in this role needs to be comfortable with that dynamic and, ideally, energized by it.

A Broader Talent Pool

The talent pool for boutique and start-up Chiefs of Staff is the widest of the three segments. Because the role is so operationally varied, it attracts candidates from a range of backgrounds that would not typically be associated with the title at a larger firm. Senior executive assistants who have been operating at a strategic level, operations managers, business partners, and project leads all represent credible candidate profiles for this type of role.

What matters in this segment is not seniority or functional expertise. It is adaptability, resilience, and the ability to operate with minimal structure. The person needs to be comfortable making decisions without full information, building processes from scratch, and switching contexts rapidly. They need to be the kind of person who, when presented with a problem that does not belong to any particular function, takes ownership of it rather than waiting for direction.

Proximity as the Defining Feature

If there is a single characteristic that defines the boutique and start-up Chief of Staff, it is proximity to leadership. The role exists because the founder or CEO needs someone who can extend their capacity: someone who understands their priorities, can represent their thinking in rooms they cannot be in, and can ensure that decisions made at the top are translated into action throughout the business.

This proximity is both the role's greatest asset and its greatest source of ambiguity. The Chief of Staff derives their authority not from a formal mandate or a defined scope, but from their relationship with the principal. That relationship must be built on trust, transparency, and a shared understanding of what the role is for. Without those foundations, the Chief of Staff in a small firm becomes a glorified personal assistant, which serves neither the individual nor the business.

Comparative Analysis

When viewed side by side, the three market segments reveal distinct patterns across several key dimensions. Understanding these differences is essential for anyone operating in the Chief of Staff space, whether as a candidate, a hiring manager, or an advisor.

Hiring Dynamics

Institutional firms fill the role internally, using the Chief of Staff rotation as a development tool for high performers. Mid-market firms use a mixture of internal promotion and external hiring, though the lack of a deep talent bench means external searches are more common here than at the institutional level. Many are hiring for the role for the first time, seeking fresh perspective and problem-solving capability they cannot source internally. Boutique and start-up firms hire based on proximity and operational need, prioritizing adaptability over pedigree.

Talent Pool

At the institutional level, candidates come from specific internal functions and are selected for their track record within the firm. In the mid-market, the pool broadens significantly, drawing from consulting, operations, and a range of commercial backgrounds. At the boutique level, the pool is the widest, extending to senior assistants, operations leads, and anyone who has demonstrated the ability to operate in high-ambiguity environments.

Role Orientation

Institutional Chiefs of Staff are primarily strategic, working on firm-wide initiatives and leadership exposure. Mid-market Chiefs of Staff balance strategy and execution, often acting as the connective tissue between the CEO and the rest of the organization. Boutique and start-up Chiefs of Staff are primarily operational, doing whatever the business needs them to do on any given day.

Career Trajectory

In institutional firms, the path is clear: the Chief of Staff rotation leads to a senior leadership role within the same organization. In the mid-market, the trajectory is uncertain, with no standardized next step and considerable variation between firms. In start-ups and boutiques, the trajectory is even more open-ended, with the role sometimes evolving into a COO position, sometimes leading to a different function entirely, and sometimes remaining a Chief of Staff role that simply grows with the business.

Addressing Common Misconceptions

"Chief of Staff is a clearly defined role"

It is not. The title encompasses fundamentally different responsibilities depending on the size, stage, and culture of the organization. Two people holding the same title at firms of similar revenue can be doing entirely different work. Anyone entering this market, on either side of the table, needs to look past the title and understand what the role actually involves in each specific context.

"You need Chief of Staff experience to become a Chief of Staff"

This is false across all three segments. At the institutional level, the role is filled by people with functional expertise and no prior Chief of Staff experience. At the mid-market level, many of the strongest hires are stepping into the title for the first time. At the boutique level, prior experience in the role is rarely a prerequisite. What matters is capability, disposition, and fit, not whether someone has held the title before.

"The Chief of Staff role is a step towards COO"

Sometimes, but not reliably. In institutional firms, the exit is typically into a different leadership function, not a COO role. In mid-market and start-up firms, the transition to COO is possible but far from guaranteed. Treating the Chief of Staff role as a waypoint to a specific destination often leads to frustration and misaligned expectations. It is more productive to treat the role on its own terms and evaluate it based on what it offers in the present.

"A strong technical background guarantees success"

Technical expertise is useful but insufficient. The qualities that determine success in a Chief of Staff role are relational and cognitive: the ability to manage ambiguity, to influence without direct authority, to synthesise complex information quickly, and to shift between strategic and operational modes as circumstances require. These qualities sit alongside technical skills, not behind them.

Conclusion

The Chief of Staff role is not one role. It is a title that is applied to a range of positions that differ in scope, function, talent pool, and career trajectory depending on where in the market they sit. The failure to recognize this is the single most common source of confusion, poor hiring, and wasted opportunity in the space.

For institutional firms, the Chief of Staff is a leadership development mechanism, filled internally and designed to build the next generation of senior leaders. For mid-market firms, it is an external hire brought in to solve specific problems, requiring careful definition and deliberate assessment. For boutique and start-up firms, it is an operational role built around proximity to leadership and the willingness to take on whatever the business requires.

Each of these models has its own logic, its own talent pool, and its own set of challenges. None of them is inherently better or worse than the others. What matters is that the people involved, whether they are hiring, advising, or seeking these roles, understand which model they are operating within and act accordingly.

The market will continue to evolve. The Chief of Staff title will continue to be applied in new ways. But the fundamental dynamics described in this paper are structural, not cyclical. Understanding them is not optional for anyone who wants to operate effectively in this space.