2023-20263 years
Bachelor's in Business Administration
IUT de Colmar - Sales, marketing, negotiation, international trade, management, communication.
PORTFOLIO / 2025
Marius
Selles
NegotiatorDeveloperMarketerEntrepreneurE-commerce
Final-year student seeking a graduation internship to expand my skillset. Eager to learn and grow, I am ready to tackle new challenges within a stimulating environment.
Looking for internship
Mulhouse, France · Open to relocation
CURRENTLY
Bachelor's in Business Administration
Looking for internship
Available immediately
SKILLS
B2B SalesProspectingAICRMNegotiation
Work Experience
2021 — 2025
2024
Sales Representative
MOBYDEV
Sept. 2024 — Dec. 2025
Led the company's 300% hyper-growth (from 2 to 8 employees) in 12 months by fully structuring recruitment and onboarding processes. Maximized sales productivity by automating 100% of the prospecting workflow using AI/No-Code solutions. Designed and launched 5 new B2B service offerings, generating immediate market traction.
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
Summer 20253 months
Visitor Scholar
University of California, Berkeley - Entrepreneurship, international business environment.
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 — PROJECTS
Selected Projects
Contact Me
AVAILABILITY & CAREER PATH
Open to opportunities starting March 2026 for a 3-month internship (End of Bachelor's degree).
Looking to transition into a Work-Study Master's in Business Engineering starting September 2026.
Format: 3 weeks in-company / 1 week in-class.
Advantage: High operational availability (75% corporate presence), ideal for long-term business development projects.
LANGUAGES
French: Native
English: C1
German: B1
Spanish: B1
SOCIAL
INTERESTS
FitnessBoxingFootballArtGeopoliticsEntrepreneurshipArtificial IntelligenceSoftware Development