Transform your people strategy into a competitive advantage

Learn how

At Degree23, we help companies navigate complex inflection points with modern, business-driven people strategies. If you’re scaling, integrating, or reshaping – we help you use people practices enabled by technology to drive business results.

WHAT WE DO

Assess, Design, & Transform

HR architecture

Build HR functions that deliver measurable business value.

Digital enablement

Harness technology and data for smarter people decisions.

Talent strategy

Attract, develop, and retain the right talent for success.

Culture impact

Shape culture that inspires people and drives performance.

What They’re Saying

“Astrid drove an impressive global HR transformation, including a complex technology modernization across 60 countries — a testament to her vision, energy, and commitment to people and culture.”
Jan JanshenFormer Managing Partner, Advent International

“Partnering with Cécile was a turning point for our HR Information System technology journey - she brought strategic insight with hands-on leadership. Beyond systems roadmaps and deployments, she helped us build the vision and capability we needed to keep on improving long after the project ended. ”
Stéphane DélivréGroup CIO IDEMIA

“Valerie is one of the most strategically minded and effective HR leaders I’ve ever worked with. An advisor to C-suite leaders can trust - she brings sharp business acumen, creative problem-solving, and a pragmatic mindset to every challenge; inspiring confidence at every level of an organisation.”
Tijen CirigSenior Director - Airports Vertical, Honeywell

“Astrid’s partnership style is grounded in clarity, courage and candor. She believes that direct, no-nonsense feedback accelerates growth - for individuals and organizations alike. Her experience and proven ability to structure and support transformation are key assets, especially in fast-evolving environments.”
Pierre BarrialBoard Member, IDEMIA

Our clients

We work with businesses undergoing:

Fast growth

Scaling at speed, mapping out people strategies that set and keep the pace the business demands.

Deal activity

Navigating M&A, carve-outs, and IPOs while aligning culture, structure, and leadership.

Cost efficiency

Optimizing the organization and HR operations to protect margins without losing momentum.

WHO WE ARE

Meet The Team

Founder & Managing Partner

Astrid Warren

Global HR visionary with a passion for progress — redefining how people strategy, technology, and leadership drive lasting business transformation.

Astrid is a seasoned leader with over 20 years of global experience as a CHRO, guiding organizations through rapid growth, large-scale redesigns, and complex M&A integrations. Known for blending strategic precision with practical execution, she has built and transformed HR functions across businesses in emerging and mature markets worldwide.

PARTNER

Valerie Tan

Organizational strategist bridging business and people — guiding leaders through complex change with clarity, collaboration, and a relentless focus on outcomes.

A global transformation leader with over 20 years of experience – having spent half her career in business before moving into HR, Valerie brings a dual perspective that connects strategic priorities with people strategies. Valerie has led organizations through major development initiatives, aligning operating models with business goals. She specializes in bringing teams together to solve complex challenges collaboratively, delivering sustainable change through new ways of working.

Partner

Cécile Cornu

Transformation leader guiding global organizations through pivotal moments from vision to execution — redefining how they lead, organize, and support their people.

Cécile is a global HR leader with 20+ years of experience driving transformation. She bridges strategy and execution—redesigning people practices, implementing digital solutions, and uniting teams around shared purpose. Known for cutting through complexity with clarity and empathy, she is a trusted partner for bringing structure, collaboration, and practical outcomes though times of change.

Why work with us