Senior data engineer building useful products in public.
1% Better.dev is Chris S. Yoon's hiring and trust surface: proven data engineering experience, small product loops, and visible execution that stays easy to verify.
Built by Chris S. Yoon. Most recent full-time role: Senior Data Engineer at theScore / ESPN Bet. Open to senior data, platform, and AI product engineering roles.
Experience
10+ years
Data engineering, validation, automation, and delivery across fintech, media, and enterprise.
Latest role
Senior Data Engineer
Most recently at theScore / ESPN Bet, building reliable pipelines and reporting systems.
Current track
Visible execution
Small product loops and public proof that keep the recent work easy to verify.
how this site works
Credibility up front. Execution underneath.
Not a resume clone and not a vague studio page. The job is simple: make the work legible fast, then let the products and repos carry the proof.
Proven engineering background first. Small products as current proof.
Useful scope beats bigger promises.
Public work should shorten the distance between interest and trust.
What this site proves
Depth
A decade-plus in data engineering means the product work sits on real technical footing.
Range
The public work covers product judgment, engineering craft, and shipping discipline.
Pace
Recent builds, linked repos, and activity keep the current signal real.
Separate verticals
Specialist lanes stay separate until they earn more room.
The dev surface stays centered on hiring, products, and engineering credibility.
Any future surface area should be earned through shipped proof, not claimed early.
Selected work · linked activity
Selected work and public proof.
A few active product loops, the systems behind them, and archived work that makes the engineering depth easy to trust.
Current Product Work
Small product loops that show judgment, scope control, and active execution.
Current product
1% Better Today
A narrow daily product loop built to ship quickly and earn trust through use.
The clearest product thesis in the brand so far: one small action, one clean loop, and a scope tight enough to ship.
Core brand product
Target MVP: April 2026
Current product
1% Better - Focus
A lightweight focus timer that shows the same thesis in practice: simple, useful, and shippable.
A smaller public product loop that reinforces scope control, build quality, and fast iteration inside the same brand.
Shipping quietly
Target MVP: March 2026
Poker Vertical
A separate specialist lane. It matters as proof of seriousness, but it does not lead the hiring story here.
Separate specialist lane
Poker remains visible, but secondary.
1% Better.poker stays separate from the recruiter-facing story on this site. It is relevant as proof that the work can support a serious vertical, but it should earn more attention on its own surface.
Operating Layer
The public site and internal systems that keep the surface current, useful, and verifiable.
1% Better - This Website
MVP reached
1% Better - OS
Target MVP: March 2026
Internal workflow system already supporting the portfolio
Archive / Proof of Work
Past work that stays visible as evidence of engineering depth without competing with the active build track.
Blue Jays Moneyball ETL
Proof-of-work archive
TwelveLabs API Validator
Proof-of-work archive
About
Chris S. Yoon
10+ years in data engineering, validation, and automation. Most recent full-time role: Senior Data Engineer at theScore / ESPN Bet. 1% Better.dev is the current proof layer: small products, public repos, and recent execution kept easy to verify.
Recruiter path
Career context, then current work.
The quick read is straightforward: background, current build track, then LinkedIn or GitHub if you want to go deeper. The site is designed to make that decision fast.