stella Wandji Ndoumi

Customer Operations and CEX Director @ Yas Togo

About

What defines me as a leader? Transformation—not only of results, but of cultures and organizational rhythms. That’s where I find meaning in my work.I have grown professionally in countries where deploying a network or launching a mobile financial service genuinely changes people’s lives. 17 years in Telecommunications across Africa and France, 14 years in management, and experience on executive committees in some of the most demanding markets on the continent—these shape a certain way of leading.My signature: delivering, even in complex environments and under tight deadlines. I structure what seems difficult, even impossible; I organize, I simplify—and I bring teams along with me, setting high expectations while supporting each individual. I have a strong analytical and strategic mindset, but what truly motivates me is seeing my strategy come to life. Data and digital—especially AI—are, in my view, systematic levers of efficiency, not optional add-ons.I believe learning is endless, and I am committed to continuous improvement.Co-lead of SheRises / Smile&Her at Axian Telecom, Founder of Sepopo at Yas/Mixx Togo and Women’s Talks at Orange CI: developing female leadership is, in my eyes, part of a leader’s role—not a side initiative.

Country

City

Togo

Industry

Telecommunications

Skill

Leadership, Gestion de la performance, transformation, Expérience client, Big data, Gestion d’équipe, Gestion de projet, Stratégie, Management, Mentorat, Marketing, Transformation RH, Transformation opérationnelle stratégique

Experience

Customer Operations and CEX Director

Yas Togo

2025-8 - Present · 1 yr 2 mos

Togo

Chief Transformation Officer

Yas Togo

2023-9 - 2026-2 · 2 yrs 6 mos

Togo

Transformation Office Leader

AXIAN Group

2022-9 - 2023-8 · 1 yr

Madagascar

Senior Manager Planning and HR Transformation

Orange Côte d'Ivoire

2021-8 - 2022-8 · 1 yr 1 mo

Ivory Coast

Senior Manager Analytics & Business Support

Orange Côte d'Ivoire

2018-6 - 2021-7 · 3 yrs 2 mos

Ivory Coast

OCI Cluster : Ivory Coast, Burkina Faso, Liberia Analytics o In charged of the Data Office (strategy, governance, operational management, etc.) o Launch of SSA Data Squad Business Support o Build and Managed transformation programs o Supported the Cluster on Marketing and Data Analytics matters o Participated to the elaboration of strategic plans

Senior Manager PMO

Orange Côte d'Ivoire

2017-8 - 2018-5 · 10 mos

Ivory Coast

• In charge of Planification, Steering and operational performance • Coordinated transversal projects of Business pole (6 directions)

Deputy zonal director, Special assignment

Millicom (Tigo)

2016-8 - 2016-12 · 5 mos

Tanzania

• Supervised Sales team • Supported the zone during market transformation (e-registration, identification, commission policy, etc.)

Loyalty and Lifetime Value Manager

Millicom (Tigo)

2015-5 - 2016-12 · 1 yr 8 mos

Tanzania

- Managed HVC segment by launching dedicated offers and launching 360° program (call center and shop priority, Network quality, Acquisition and retention offers, loyalty program etc.) - Mitigated churn by launching retention offers and dealing with all aspects impacting churn (SIM SWAP, Sales quality, Network issues, etc.) -Team Management

Pricing & Corporate offers Manager

Millicom (Tigo)

2014-1 - 2015-3 · 1 yr 3 mos

Tchad

- Monitored, Analysed and Managed pricing changes - Launched mass market activities and business development activities - Launched activities for Corporate customers - Team management

Interim CCO

Millicom (Tigo)

2014-1 - 2014-6 · 6 mos

Chad

• Full scope coordination of marketing activities and revenue growth initiatives • Participated in the 5-year plan elaboration • Managed Marketing team

Regional development and Corporate offers Manager

Millicom (Tigo)

2013-3 - 2013-12 · 10 mos

Tchad

- Increased revenues of regions (old and new sites) - Followed the launch of new sites and their profitability - Developed dedicated offers for Corporate market - Managed a team of 3 persons

Interim Corporate Manager

Millicom (Tigo)

2012-10 - 2013-12 · 1 yr 3 mos

Tchad

Managed a team of 4 persons Restructured the team Elaborated 2013 strategy plan Business Development Managed operational duties (customer follow up, Pipe management, Debt recovery management, etc.)

Voice and SMS Manager

Millicom (Tigo)

2012-10 - 2013-3 · 6 mos

Chad

Managed voice and SMS offers

Consultant

Sofrecom

2009-9 - 2012-10 · 3 yrs 2 mos

- Project manager, France - Direct/Relational Marketing Strategy, West Africa - Mobile portal analysis, France - Greenfield Project, Mobile Operator launch, Middle East - Product Manager, France