Senior HR Business Partner - US (Contract / Freelance)

About the position

We’re looking for a Senior HR Business Partner (Org Effectiveness) to join us on a contract / freelance basis and help leaders build high-performing, accountable teams during an important phase of growth.
This is a strategic, high-impact assignment — not a traditional operational HRBP role. You’ll act as a trusted advisor to senior leaders, diagnosing organisational challenges, coaching managers, and driving focused people interventions that unlock measurable business impact.
You’ll partner with a dedicated client group (R&D or GTM/G&A), helping translate business challenges into practical, high-leverage people solutions.

Responsibilities
• Partner with leaders to drive team effectiveness and sustained high performance
• Diagnose organisational friction and identify root causes of performance challenges
• Advise on organisation design, role clarity, and structural decisions
• Support workforce planning and people budgeting with divisional leadership
• Coach managers to strengthen feedback habits and performance conversations
• Guide leaders through performance management with clarity and consistency
• Advise on headcount trade-offs and prioritisation decisions
• Use people data to identify patterns, risks, and intervention opportunities
• Translate insights into practical action plans
• Embed data-informed decision-making into leadership discussions
• Lead or support cyclical people initiatives (performance reviews, engagement surveys)
• Support organisational change and transformation initiatives
• Ensure clear communication and decision cascade across teams
• Partner closely with People Operations to establish clear ownership boundaries
• Balance operational compliance with strategic intent
• Support employee engagement initiatives that drive cultural impact

Requirements
• Strong experience as an HR Business Partner in fast-paced or scaling environments
• Proven ability to advise senior leaders on organisational performance and design
• Experience supporting transformation, change, or restructuring initiatives
• Commercially minded with strong business understanding
• Excellent problem-solver who identifies root causes, not just symptoms
• Confident coach who can influence and challenge leaders constructively
• Organisational design and team structure optimisation
• Change management and transformation execution
• Working knowledge of employment law (Europe, UK and/or US)

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