Global People Operations Leader

Martyse Rosario

Ten years. Three continents. One belief: that people strategy, done right, is the most powerful lever a business has.

View My Work Let's Connect
Scroll to explore
Who I Am

People strategy at the
intersection of craft
and creativity.

I'm a Global People Operations Leader with a decade of experience building and scaling HR functions across the U.S., U.K., and EU. I advise C-suites, lead organizational transformation, and turn business objectives into people strategy that works. For startups navigating hypergrowth and enterprises managing complex, multi-site workforces alike.

What sets me apart is the ability to operate at both ends of the spectrum: architecting enterprise-grade talent systems and building people culture from scratch with equal fluency. I bring operational rigor, commercial acumen, and a creative lens to every organization I join, designing experiences that strengthen retention, deepen engagement, and position people as a true competitive advantage.

With a growing practice in ethical AI, I bring a principled perspective to how automation and data-driven decisions affect workforce equity, employee experience, and organizational trust. Technology adoption should center people, not just efficiency.

10+
Years of Global
HR Leadership
450+
Employees Led
Across US, UK & EU
4
Industries: Tech,
Life Sciences,
Food & Bev, On-Demand
Belief That Culture
Is Competitive Advantage
Core Competencies

Where I create
the most impact.

01

People Strategy & Organizational Design

Architecting people functions that align human capital with business objectives, across scaling startups and enterprise organizations spanning multiple geographies.

02

Talent Acquisition & Leadership Pipelines

Leading full-cycle talent acquisition from entry-level to C-suite, with scalable recruiting systems, succession planning, and workforce planning for sustainable growth.

03

Learning, Development & Performance

Designing and implementing performance management frameworks and L&D programs that unlock employee capability, engagement, and sustained organizational health.

04

Culture, DEIB & Employee Experience

Building inclusive cultures through intentional DEIB initiatives, community engagement, and experience design that connects people to purpose and to each other.

05

HR Technology & Ethical AI Analytics

Implementing HRIS systems, people analytics platforms, and principled AI-driven automation to make people decisions faster, smarter, and more equitable across the enterprise.

06

Global HR & Change Management

Navigating complex global employment law across the U.S., U.K., and EU, while leading organizational change that moves people and businesses confidently forward.

Career Journey

A decade of
building what matters.

2023 – 2025 Aspire Bakeries · Los Angeles, CA
Manager, HRBP

Embedded as a strategic partner to the full C-Suite and senior leadership across eight functions, including R&D, Manufacturing, and Supply Chain, across the U.S. and Canada, translating enterprise business objectives directly into people strategy at scale. Architected a new performance management system that drove a 17% improvement in employee performance quarter-over-quarter, enabling data-driven talent assessments and merit-based promotions across 450+ employees and 13 facilities. Led enterprise-wide succession planning to strengthen leadership pipelines, while a ground-up onboarding overhaul improved 90-day retention by 83%, meaningfully accelerating time-to-productivity for new associates.

2022 – 2023 Ghosts Inc. · Los Angeles & London, UK
Manager, People Operations & Community

Joined at Series A as employee #6 and the company's global People leader, building the HR function from the ground up and scaling the team from 6 to 40+ through a full acquisition. Managed end-to-end hiring for 25 roles including C-suite positions, standing up a lean recruiting process alongside core HR infrastructure, and benchmarked compensation using Mercer data to reduce time-to-hire and cost-per-hire. Led a complex acquisition transition, integrating 30 employees under a new organizational umbrella while navigating the legal, cultural, and operational complexity of two merging entities across the U.S., U.K., and EU.

2019 – 2022 BioLabs · Los Angeles, Boston & New York
People & Operations Manager

Directed all People Operations across multiple sites for LA's first life sciences co-working hub, overseeing HR compliance, benefits strategy, and organizational design for both internal staff and 15+ member biotech companies. Drove people and operational strategies that contributed to 25% membership growth and $1.2M in revenue improvement, strengthening BioLabs' position as a leading life sciences hub. Produced all internal and external programming, hosting 200+ attendees per event and building community through philanthropic partnerships with City of Hope and The Lundquist Institute.

2015 – 2019 DoorDash · New York, NY
Manager, Strategy & People Operations

Joined as DoorDash's first-ever HR employee at roughly 20 staff and 50 contractors, building the entire People Operations function from a blank page. Designed and implemented the company's first HRIS, reducing onboarding time by 85% and improving turnover by 45%, then scaled the function to support 150+ corporate employees and 1,000+ contractors across all 50 states. Revamped the independent contractor sign-up and compliance strategy to enable self-serve onboarding, and built a multi-department HR org spanning Benefits, L&D, DEIB, and HRIS as the company scaled into grocery, catering, and Hotspots.

Areas of Expertise

The full breadth of
what I bring.

Global HR & People Strategy Organizational Design Talent Acquisition Strategy Performance Management Learning & Development HR Data & People Analytics Change Management Executive Coaching Compensation & Total Rewards HR Technology & HRIS Ethical AI Practices AI-Enabled Workforce Strategy Workforce Planning Culture & Engagement DEIB Initiatives Employer Branding Stakeholder Management HR Policy Harmonization Recognition & Retention Strategies Compensation Benchmarking Cross-Functional Partnership
Get In Touch

Ready to build
something great
together?

Whether you're scaling a team, transforming your people function, or looking for a strategic thought partner, let's connect and explore what's possible.

Send a Message Connect on LinkedIn
Email
Phone
Based In
Los Angeles, CA