PORTFOLIO / 2026

Marius
Selles

NegotiatorDeveloperMarketerEntrepreneurE-commerce

Ambitious student seeking a work-study position for Fall 2026 in a top 5 French business school PGE. Eager to learn and grow within a challenging environment.

Looking for work-study (Fall 2026)
Mulhouse, France · Open to relocation
CURRENTLY
Bachelor's in Business Administration
Looking for work-study (PGE Top 5)
Available Fall 2026
SKILLS
B2B SalesProspectingAICRMNegotiation

Work Experience

2021 — 2026
2024

Sales Representative

MOBYDEV
Sept. 2024 — Dec. 2025

Drove the company's 300% scale-up (from 2 to 8 employees) by designing 5 new B2B service offerings and structuring key operational processes. Shifted focus from execution to strategy, building a scalable business infrastructure that enabled sustainable hyper-growth.

B2BAI/No-CodeRecruitmentProspecting
2023

Business Development Associate (Work-Study)

CHOCO STORY
2023 — 2024

Outperformed individual targets by generating 75% of the team's total additional sales through customer needs analysis and proactive upselling strategy. Extended brand visibility by negotiating and securing strategic local partnerships.

SalesUpsellingPartnerships
2021

Operational Reservist

FRENCH ARMY (Régiment de Marche du Tchad)
Since 2021

Developed critical decision-making skills in uncertain environments. Demonstrated consistent commitment and discipline, validated by integration into a demanding marine infantry regiment. Strengthened team cohesion under intense stress.

LeadershipDisciplineCrisis Management

Education

Oct. 2023 - July 20263 years

Bachelor's in Business Administration

Université de Haute-Alsace, Colmar - Marketing digital, entrepreneurial, e-business pathway. Work-study program.

Summer 20253 months

Visitor Scholar

Sainsbury Wellcome Centre for Neural Circuits and Behaviour, London - Research and academic exchange program.

2022-20231 year

Double Degree in Economics & Philosophy

Faculté de Droit, Sciences économiques et Gestion de Nancy - Economics, philosophy, critical thinking.

2021-20221 year

Preparatory Class for Business Schools

Collège Épiscopal Saint Etienne, Strasbourg - Intensive preparation for competitive entrance exams.

2019-20212 years

Political Science

ESSPA Formation - Preparation for IEP competitive exams. Member of Student Association (BDE).

05 — BLOG

Daily Insights

I share daily thoughts on business development, AI, entrepreneurship, and personal growth on LinkedIn. Follow my journey and join the conversation.

LinkedIn Posts

Daily posts about sales strategies, AI tools, startup insights, and lessons learned from my entrepreneurial journey.

Read my posts

Contact Me

AVAILABILITY & CAREER PATH

Seeking a work-study position starting Fall 2026 as part of a PGE (Grande Ecole Program) at a top 5 French business school.

marius.selles@gmail.com
+33 6 63 84 83 10
Mulhouse, France
LANGUAGES
French: Native
English: C1
German: B1
Spanish: B1
SOCIAL
INTERESTS
FitnessBoxingFootballArtGeopoliticsEntrepreneurshipArtificial IntelligenceSoftware Development
© 2026 Marius Selles. All rights reserved.