Senior Manager, HR Business Partner

As a Senior Manager, HR Business Partner, you will lead a global team and serve as a strategic HR partner to senior leaders across our global revenue organization, driving people strategy, organizational effectiveness, and talent development in alignment with StackAdapt's company objectives. This is a high-impact leadership role within the People & Culture team, requiring deep expertise in employee relations, org design, and change management at scale.

You will collaborate closely with leaders across Finance, Legal, and other G&A functions, as well as cross-functional partners in Talent Acquisition, Total Rewards, People Operations, and Learning & Development to deliver integrated people programs. This role reports to the Director, People Business Partners.

StackAdapt is a Remote First company, we are open to candidates located anywhere in Canada for this position.

What You'll Be Doing:

• Partner with senior business leaders to design and execute people strategies that drive organizational effectiveness, talent retention, and high-performance culture.


• Lead complex employee relations investigations and resolution processes, applying sound judgment and ensuring legal compliance across Canadian and global jurisdictions.


• Lead a team of global People Business Partners while partnering with senior business leaders to design and execute people strategies that drive organizational effectiveness, talent retention, and high-performance culture.


• Consult on org design, workforce planning, and restructuring initiatives, providing data-informed recommendations to business and People leadership.


• Coach and develop people managers on leadership effectiveness, performance management, and team engagement.


• Collaborate with Centers of Excellence (Talent Acquisition, Total Rewards, L&D, People Ops) to deliver integrated HR programs aligned to business priorities.


• In your first six months, you will focus on building trusted relationships with your assigned business unit leaders, conducting a landscape assessment of current people priorities and talent gaps, and completing at least one end-to-end org design or workforce planning initiative. You will also lead employee relations cases independently, support a performance cycle, and co-develop a people roadmap for your client groups aligned to StackAdapt's 2026 company objectives.


• Employee relations: Resolve 90%+ of ER cases within agreed SLA timelines.


• Org design: Deliver at least one documented org design or workforce planning project within the first 6 months.


• Manager capability: Demonstrate measurable improvement in manager effectiveness scores in assigned client groups within 12 months.


• Retention: Contribute to a regrettable attrition rate at or below team target for assigned business units.

What You'll Bring to the Table

• 7+ years of progressive HR Business Partner experience, including at least 3 years in a senior or lead HRBP role supporting complex, fast-paced organizations.


• Demonstrated experience leading org design, workforce planning, and change management initiatives at scale.


• Deep expertise in Canadian employment law and employee relations practices across multiple provinces; global employment law knowledge is a valuable asset.


• Proven ability to build trusted advisory relationships with VP and C-suite leaders, influencing decisions through data, business acumen, and credibility.


• Track record of coaching and developing managers and teams to elevate leadership capability and engagement.

StackAdapter's Enjoy:

• Highly competitive salary


• Retirement/ 401K/ Pension Savings globally


• Competitive Paid time off packages including birthday's off!


• Access to a comprehensive mental health care program


• Health benefits from day one of employment


• Work from home reimbursements


• Optional global WeWork membership for those who want a change from their home office and hubs in London and Toronto


• Robust training and onboarding program


• Coverage and support of personal development initiatives (conferences, courses, books etc)


• Access to StackAdapt programmatic courses and certifications to support continuous learning


• An awesome parental leave program


• A friendly, welcoming, and supportive culture


• Our social and team events!

Please note: Benefits and perks may vary depending on your country of employment and the nature of your engagement. In locations where StackAdapt does not have a legal entity, employment and benefits are administered in accordance with local regulations and partner policies.