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Stefan TheronST
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Stefan Theron

@stefantheron

Founder of Pathidon, writing about investor psychology and behavioral finance for better long-term decisions.

South Korea
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What I'm looking for

After many years of teaching, I’d like to enter the business field.

At Pathidon, I focus on investor psychology and behavioral finance. I write about how fear, overconfidence, impatience, and ego shape investment decisions, and how emotional discipline can support better long-term outcomes.

At PEAI, I create tests, schedules, and content for two schools. At Spark Education Consulting, I create books and instructional content for PEAI and Spark Education, with a focus on writing and narrative learning materials.

At Poly Inspiration, I developed instructional content, teaching schedules, and assessments for an AI-driven English learning product. I also contributed to WordIt, a published educational language-learning app, and connected classroom needs with product and R&D requirements.

Earlier, I taught English to learners from kindergarten through adulthood and designed curricula and assessments. I completed an MBA in Management through the University of the People and would like to enter the business field after many years of teaching.

Experience

Work history, roles, and key accomplishments

PE
Current

Research And Development Specialist

PEAI

Mar 2026 - Present (8 months)

Create tests, schedules, and overall content for two schools

SC
Current

Research And Development Scientist

Spark Education Consulting

Jan 2026 - Present (10 months)

●​Create ​books and instructional content for two academies, PEAI and Spark Education.
●​Design and expand content offerings, with a focus on developing writing and novel-based/narrative learning materials.

PA
Current

Founder

Pathidon

Jan 2026 - Present (10 months)

Behavioral finance platform focused on investor psychology, emotional discipline, and long-term decision frameworks.

AI

Assistant R&D Manager

AIEI

Apr 2023 - Mar 2026 (2 years 11 months)

Worked as Assistant R&D Manager at AIEI.

PA

Language Specialist

Poly English Language Academy

Jan 2024 - Jan 2026 (2 years)

Taught English across kindergarten, elementary, middle school, and adult learners; designed curriculum and assessments and trained and managed junior teaching staff.
Students achieved speaking-competition awards, successfully hosted business events with international clients, and went on to secure work internationally.

PK

Research And Development Scientist

Poly Inspiration - South Korea

Jan 2021 - Jan 2024 (3 years)

●​Developed instructional content, teaching schedules, and assessments for an AI-driven English learning product used with elementary and kindergarten students.
●​Designed student curriculums and tests, and contributed to WordIt, a published educational language-learning app.
●​Bridged education and product/R&D functions, translating classroom needs into content and testing requirements.

KS

Assistant R&D Manager

Korea Poly School

May 2022 - Apr 2023 (11 months)

Content Creation and Educational Research

HA

English Teacher

Hyunjae English Language Academy

May 2020 - May 2022 (2 years)

I teach elementary and middle school kids conversational English.

HI

Language Specialist

HyunJae English Language Institute

Jan 2020 - Jan 2021 (1 year)

Taught English across kindergarten, elementary, middle school, and adult learners; designed curriculum and assessments and trained and managed junior teaching staff.
Students achieved speaking-competition awards, successfully hosted business events with international clients, and went on to secure work internationally.

LC

English Teacher

Language Cube

May 2019 - May 2020 (1 year)

I taught English to adults in a major business area in Seoul.

LY

Language Specialist

Language Cube Yeoksam

Jan 2019 - Jan 2020 (1 year)

Taught English across kindergarten, elementary, middle school, and adult learners; designed curriculum and assessments and trained and managed junior teaching staff.
Students achieved speaking-competition awards, successfully hosted business events with international clients, and went on to secure work internationally.

OI

English Teacher

OneWorld Language Institute

Apr 2018 - May 2019 (1 year 1 month)

English teacher to business professionals in Pangyo, Seongnam, South Korea.

OI

Language Specialist

OneWorld Language Institute

Jan 2018 - Jan 2019 (1 year)

Taught English across kindergarten, elementary, middle school, and adult learners; designed curriculum and assessments and trained and managed junior teaching staff.
Students achieved speaking-competition awards, successfully hosted business events with international clients, and went on to secure work internationally.

WI

English Teacher

Wonderland Language Institute

Mar 2017 - Apr 2018 (1 year 1 month)

I taught kindergarten and elementary students English.

GW

Language Specialist

Gangdong Wonderland

Jan 2017 - Jan 2018 (1 year)

Taught English across kindergarten, elementary, middle school, and adult learners; designed curriculum and assessments and trained and managed junior teaching staff.
Students achieved speaking-competition awards, successfully hosted business events with international clients, and went on to secure work internationally.

GN

English Second Language Teacher

GnB

Feb 2016 - Mar 2017 (1 year 1 month)

I taught elementary and middle school kids English.

GJ

Language Specialist

GnB Academy Jongchon

Jan 2016 - Jan 2017 (1 year)

Taught English across kindergarten, elementary, middle school, and adult learners; designed curriculum and assessments and trained and managed junior teaching staff.
Students achieved speaking-competition awards, successfully hosted business events with international clients, and went on to secure work internationally.

CHUNGDAHM Learning logoCL

Language Specialist

CHUNGDAHM Learning

Jan 2015 - Jan 2016 (1 year)

Taught English across kindergarten, elementary, middle school, and adult learners; designed curriculum and assessments and trained and managed junior teaching staff.
Students achieved speaking-competition awards, successfully hosted business events with international clients, and went on to secure work internationally.

LF

Proofreader

Leon Roper Psychology Firm

Jun 2015 - Nov 2015 (5 months)

I worked on the psychology reports for the clients of Leon Rooer at his psychology practice. I fact checked the work and also made changes to the English structure and grammar.

BS

Proofreader

Brooklyn Psychological Services

Jan 2015 - Jan 2015 (0 months)

●​Proofread and edited professional documents for accuracy, clarity, and tone prior to distribution.

ZA

Bartender

Zappas

Dec 2011 - Jul 2014 (2 years 7 months)

It was a great learning experience while working with some amazing people. I learned a lot in regards to management and connecting with different individuals.

Education

Degrees, certifications, and relevant coursework

FI

FVZS Leadership Institute

Master of Business Administration, Organizational Leadership

Stellenbosch University logoSU

Stellenbosch University

Bachelor of Arts, Humanities/Humanistic Studies

2011 - 2015

IT

i-to-i TEFL

Teaching English as a Foreign Language (TEFL)

Aug 2015

University of the People logoUP

University of the People

Master of Business Administration - MBA, Business, Management, Marketing, and Related Support Services

2018 - 2021

I completed my MBA in Management through the University of the People. I would like to enter the business field after many years of teaching.

Tech stack

Software and tools used professionally

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