Principle People Partner
Mattermost
We are looking for a foundational HR leader to build the backbone of our global People operations. As we scale toward an AI-forward future, we need a systems thinker who can bridge complex global compliance with a high-performance culture.
In this role, you will own high-impact, high-stakes areas including Employee Relations, Performance Management, and Global Compliance, ensuring our operational maturity keeps pace with our technical innovation.
What You’ll Do
Strategic Advisory & Leadership Partnership
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Act as a global business partner to leaders across PD&E, GTM, and G&A.
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Navigate leadership “grey areas,” coaching managers on performance management and building high-potential, AI-enabled teams.
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Support the scaling of a high-performing, innovative culture.
Performance Management & Development
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Lead the evolution of performance reviews toward continuous, AI-augmented feedback, moving beyond check-the-box cycles.
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Provide real-time coaching and guidance to leaders to reinforce a high talent bar.
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Partner with leadership to revamp the internal leveling framework to reflect the future state of work, including AI and digital labor.
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Identify core competencies and skills gaps to support growth and development planning.
Employee Relations & Policy
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Own end-to-end Employee Relations, including investigations, complex case management, and advisory support.
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Develop and apply clear, fair policies that balance legal rigor with a culture of radical candor.
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Manage offboarding and employee transitions with care and consistency.
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Serve as a trusted advisor on performance, compliance, and career growth topics.
Communication, Culture & Conflict Resolution
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Foster a positive, collaborative culture through open and transparent communication.
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Act as a bridge between employees and management to promote trust and clarity.
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Manage interpersonal conflicts, grievances, and internal investigations in partnership with executives and legal counsel.
Global & Federal People Operations
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Strengthen and scale the U.S. Federal subsidiary operating under Facility Clearance (FCL) and TS/SCI requirements.
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Ensure compliance with security, regulatory, and operational standards, including clearance readiness for Five Eyes partners.
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Partner with Legal and Finance to resolve regulatory HR matters.
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Build and scale a U.S. Veterans Program, including SkillBridge and related networks.
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Partner with the VP, HR, FSO, and Co-Founders to clarify and operationalize matrix management structures aligned with FCL and business goals.
Operational Scaling & AI Enablement
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Partner with the Senior Manager, HR Analytics & Systems to ensure the HR tech stack (HRIS, ATS) supports global growth and delivers clean, actionable data.
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Collaborate with the VP to identify opportunities where AI can automate routine HR work, allowing the People team to focus on high-impact human initiatives.
Qualifications
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8+ years of experience in HR Operations, with at least 3 years in a high-growth tech environment.
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Proven experience managing global employment entities outside the U.S. (UK, EU, etc.).
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Deep expertise in Employee Relations, conflict resolution, and labor law.
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Strong systems mindset — you build processes, not just follow them, and are comfortable scaling from V1 to V10.
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Excellent communication skills, with the ability to translate complex legal or operational topics for non-HR audiences (e.g., Engineers, Product Managers).
- This role may require the candidate to obtain and maintain a U.S. security clearance in the future. As such, applicants must be U.S. citizens and eligible to obtain a U.S. government security clearance.
Mattermost takes a market-based approach to pay, and compensation may vary depending on your work location in the US. The successful candidate’s starting pay will be determined based on job-related skills, experience, qualifications, work location, and market conditions. These ranges may be modified in the future.