Lead Jaeil
LinkedIn Creator / Author
A few strangers changed my work. An editor I first met on LinkedIn became my first book, and LinkedIn led to three global employers. I show how that kind of writing works, and write it for you.
30,000+
Followers
1.3M+
Impressions
3
Career moves via LinkedIn
11
Speaking Events
Followers and impressions are totals across LinkedIn, Threads, and the Naver blog. The per-channel figures are on the channels page.
What changed
What changed when strangers connected
Not a follower count. Writing and connecting with people I did not know turned into real job moves, books, and a community.
Jobs that actually came through
- Joined SAP, ZEISS Vision, and a Nasdaq-listed company through LinkedIn and Easy Apply
- LinkedIn as a working channel for the next career move, not just a profile
A network of 23,000+, and coffee chats
- 23,000+ followers on LinkedIn
- Coffee chats that took online connections into real conversations
Two published books
- Met an editor on LinkedIn and wrote “It works! LinkedIn”
- Co-wrote “We're Still Commuting” with author Junhyeok Lee
A paid community programme
- Ran the LinkedIn Challenge through five cohorts
- Planned and ran paid programmes; now also offering LinkedIn content writing
Start Here
Start from where you are
Four paths, depending on where you are right now. Pick the one that sounds like you.
If you're just getting started
LinkedIn Lab (free)
A free open chat where you can ask anything before spending a won. Pairs well with the book if you want a structured walkthrough.
Join the free communityIf you want your ideas turned into posts
LinkedIn Content Writing
Copy that people who don't know you will read. Send notes and material, and Lead Jaeil builds the post around the one sentence that matters and one concrete example. Ask on KakaoTalk for a quote.
Explore content writingIf you want your profile written for you
Profile Writing Service
Job hunting or working for yourself, send your resume or service deck and give it 30 minutes. Lead Jaeil writes your headline, About, experience, and education.
See the serviceIf you're looking for a speaker
Speaking & Lectures
Conference talks, company lectures, and university sessions. Browse past events, then send an inquiry.
See speaking historyAbout
Who is Lead Jaeil
Everyone who changed my work started out as a stranger. One was an editor I first connected with on LinkedIn, and that connection became my first book, “It works! LinkedIn”.
So what gets shared here is only what has been tried firsthand and measured. That record became two books, and sessions on LinkedIn branding for companies, universities, and communities.
Selected work
Recent sessions
Three in-person sessions. The full record, including mentoring and campaigns, is on the speaking page.
Microsoft AI Community, "LinkedIn social branding" workshop
- Curriculum built in two stages after profiling the tracks in the room: engineering, PM, marketing
- Wrote and printed a worksheet and a reference summary so attendees could draft profile copy and post ideas on the spot
Yonsei x Indonesian Embassy 'Greenprint of Progress' Lecturer
- First solo English session
- Received 'Confident' and 'Impressive' feedback
Hyphencon Conference Speaker
- Topic pivot from career to sales
- Compressed from 40 to 30 minutes
Published Works
Books
Practical guides and essays born from real LinkedIn and career experience.
Work together
Three ways in
Free through to hands-on. Compare them side by side before deciding.
LinkedIn Lab
- Who it's for
- Anyone who wants to start on LinkedIn but is not sure what to ask first
- Cost
- Free
LinkedIn Content Writing
- Who it's for
- Professionals, solo founders and freelancers who want people who don't know them to see their experience
- Cost
- Individual quote after a KakaoTalk consultation
Profile Writing Service
- Who it's for
- Anyone with a profile that is not producing results, or without time to write it
- Cost
- ₩160,000 (one language, one consolidated revision)
Feedback
What attendees said
Written and surveyed by people who were in the room.
On 3 June I had 38 LinkedIn connections. Today I have 1,059.
Reader of “It works! LinkedIn” · 2026.08
Every respondent said they would recommend it to a friend or colleague.
Microsoft AI Community, AI Playground · 2026.07
What stayed with me most: opportunity is made inside relationships.
Twojob Lab, Twojobmate fifth guest talk · 2026.07
Coffee chats through a well-kept profile, and networking at GTC
LinkedIn Challenge, cohort 5 sharing session · 2026.04
The most important change the challenge gave me is confidence.
LinkedIn Challenge, cohort 3 sharing session · 2025.12
I live in Busan, but 58% of my readers came from Seoul and Incheon. LinkedIn removed the physical constraint.
LinkedIn Challenge, cohort 3 sharing session · 2025.12
I felt deep gratitude that I can still share alongside them.
LinkedIn Challenge, cohort 3 sharing session · 2025.12
His deep understanding of LinkedIn goes without saying, and his eagerness to actively help was wonderful.
LinkedIn Challenge, cohort 3 sharing session · 2025.12
I saw LinkedIn not as a channel for finding new clients, but as a showroom for the trust I have built.
LinkedIn Challenge, cohort 2 sharing session · 2025.11
Just as it is, this challenge was a truly grateful and precious time.
LinkedIn Challenge, cohort 2 sharing session · 2025.11
If someone is about to start, I hope they begin LinkedIn on a steady footing through Lead Jaeil's challenge.
LinkedIn Challenge, cohort 2 sharing session · 2025.11
Let's Connect
For speaking, coaching, collaboration, or interview inquiries, feel free to reach out.
Applying for profile writing, or asking about a talk or collaboration? Use the inquiry form