Mark Thielmann in

Mark Thielmann

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Sales Development Representative at Brex
📍 San Francisco, California, United States

Mark is a Sales Development Representative at Brex, leveraging his skills in communication and relationship building to drive business growth. He holds a degree in Construction Management from California Polytechnic State University-San Luis Obispo and has pivoted his engineering and project management background towards a career in fintech sales.

Outside of his professional life, Mark is an alumnus of Bellarmine College Preparatory and was involved with the Sigma Nu Fraternity during his time at university. He is a natural leader who excels in high-pressure environments while fostering collaboration among his peers and colleagues.

He made a significant career transition from construction engineering internships directly into a sales role within the competitive fintech industry.

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Experience
1 Years
Current Role
Sales Development Representative
Job Level
Junior
Location
San Francisco, California, United States
Personality Overview

How Mark shows up

Communication Style
Decision Approach
Work Preference

Behavioral traits and communication patterns that shape how this person evaluates opportunities, builds trust, and makes decisions in professional settings.

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Priorities

Topics Mark cares about

Fintech Sales
He recently started a new role as a Sales Development Representative at Brex and expressed excitement about diving into the fintech space and growing his sales skills.
Career Pivoting
His background includes a degree and internships in construction management before he deliberately transitioned into a sales career in the technology sector.
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Career

Work history

10-2025
Sales Development Representative
Brex
1-2023 - 6-2025
Front Desk Staff - Disability Resource Center
California Polytechnic State University-San Luis Obispo
6-2024 - 8-2024
Field Engineer Intern
The Whiting-Turner Contracting Company
6-2023 - 8-2023
Project Engineering Intern
Webcor
12-2022 - 4-2023
Campus Manager
LVIN
In the press

Media appearances

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Education
9-2021 - 6-2025
Construction Management
California Polytechnic State University-San Luis Obispo
8-2017 - 5-2021
High School Diploma
Bellarmine College Preparatory
Social presence
in
Behavioral profile

DISC profile (public)

DISC behavioral profile

Dominance, influence, steadiness, and calculativeness scores with guidance on how this person prefers to communicate and decide.

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