Beyond Expertise: What Will Define Future Public Sector Leaders?

Government has always relied on expertise.

But the nature of government work is changing.

Many of the challenges facing public sector organisations today do not fit neatly within one portfolio, one profession or one organisational boundary.

Climate change, digital transformation, service reform, workforce capability, fiscal pressures and changing community expectations rarely sit within the boundaries of a single team, function or agency.

They more often require collaboration across disciplines, divisions, agencies and sectors - which means the capabilities needed for success are also changing.

While expertise and technical capabilities remain essential, increasingly, government needs people who can connect expertise with broader organisational and system outcomes.

Those people are often described as T-shaped professionals

The T-shaped professional: combining depth and breadth

The vertical line of the “T” represents depth:

• technical expertise
• professional credibility
• experience and judgement
• the ability to provide trusted advice.

The horizontal line represents breadth:

• understanding government systems
• strategic thinking
• stakeholder awareness
• collaboration across boundaries
• enterprise leadership capability.

Together, these capabilities enable leaders to provide specialist advice while understanding the implication of decisions across the agency, government system and community.

The value of specialist capability - the depth of the "T"

Specialist expertise is fundamental to effective government. Complex policy, operational and community challenges require people with deep knowledge and the ability to provide authoritative advice. Specialists contribute value through evidence and professional judgement, helping decision-makers understand complex issues, assess risks and make informed choices.

Technical credibility

• Specialists' expertise builds trust and provides confidence when navigating difficult or highly specialised challenges.

Problem-solving capability

• Many government priorities — including digital transformation, infrastructure, regulation, health, economic management and environmental policy — require deep professional knowledge to conceptualise, plan, implement, manage, review, adapt and evaluate.

Innovation and improvement

• Specialists often identify opportunities for better practice, new approaches and improved outcomes within their area of expertise.

However, as professionals move into broader leadership roles, their expertise needs to be complemented by additional capabilities, as technical excellence alone doesn’t automatically translate into enterprise leadership.

Senior leaders must also understand competing priorities, stakeholder expectations, organisational dynamics and broader government objectives.

The value of generalist capability - the breadth of the "T"

Generalist capability is equally important. Generalist leaders bring the ability to understand connections across systems and coordinate action across boundaries, often contributing through systems thinking - considering how decisions affect agencies, government and community.

They ask:

• What are the broader implications?
• Who else needs to be involved?
• What risks or unintended consequences may arise?
• How does this contribute to strategic priorities?

Collaboration and alignment

Government outcomes are rarely, if ever, achieved by one team acting alone. Generalist leaders are often highly skilled in bringing together different perspectives, disciplines and stakeholders to achieve shared objectives.

Strategic perspective

Generalist experience helps leaders understand how policy, operations, governance, resources and community outcomes interact.

Adaptability

As priorities change, generalist leaders can often apply their experience across different contexts and challenges enabling agile and effective decision-making in dynamic public sector environments.

However, breadth without sufficient depth can create its own challenges.

The strongest generalist leaders are people who understand enough about multiple areas to connect expertise, make sound decisions and lead effectively.

What T-shaped leaders bring to the public sector

Leveraging the powerful combination of the best of their generalist and specialist expertise, T-shaped leaders:

• provide trusted expert advice
• understand the broader operating environment
• connect people and perspectives
• translate complexity for decision-makers
• lead change across boundaries
• balance competing priorities
• build capability in others

They are comfortable saying, “I may not have the technical answer, but I understand the issue, know what questions to ask and know who needs to be involved.”

Building T-shaped leadership capability

Developing T-shaped leaders requires deliberate investment from emerging and established leaders, and their agencies.

For individuals, this investment may include:

• leading cross-functional initiatives
• working across portfolios or agencies
• undertaking secondments
• contributing to strategic projects
• developing capability in areas such as governance, finance, digital or commercial practice
• strengthening stakeholder engagement and communication skills
• seeking perspectives outside their own professional discipline.

For agencies, it means creating opportunities for people to broaden their experience.

This may include:

• encouraging mobility across functions
• supporting cross-agency collaboration
• creating leadership pathways that value both expertise and enterprise contribution
• recognising people who connect disciplines and build collective capability.

Questions for executive leaders

As executive leaders consider their own capability and the capability of their people, useful questions include:

• Are we developing expertise alongside broader leadership capability?
• Do our people have opportunities to work beyond their immediate functions?
• Are we building leaders who can connect across boundaries?
• Where do we need deeper technical expertise?
• Where do we need greater systems thinking and collaboration?
• Are we rewarding enterprise contribution as well as functional excellence?

Conclusion: From expertise to impact

The future of government leadership isn’t about choosing between specialist and generalist capability.  It is about building the ideal combination of both.

Government needs experts who can provide depth, evidence and judgement. It also needs leaders who can connect ideas, coordinate action and navigate complex systems. The most effective public sector leaders develop both; maintaining the expertise that creates credibility, while building the perspective needed to influence outcomes outside their immediate role.

In a world where public sector challenges are increasingly interconnected, T-shaped leaders are essential to help organisations move from expertise to enterprise impact.

Further reading

• Brown, Tim (2009). Change by Design: How Design Thinking Transforms Organizations and Inspires Innovation. Harper Business.

Acknowledgement

• The concept of the T-shaped professional was popularised by Tim Brown and IDEO through their work on design thinking, describing people who combine deep expertise in one discipline with the ability to collaborate across disciplines. The idea draws on earlier research into boundary-spanning roles and organisational knowledge creation.