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Built with Next.js.Updated 2026.11.07

Writing

20 posts

Interview and hackathon retrospectives, research notes, engineering records. Ordered by date, nothing else.

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20 posts

20269

2026.09.24

[Side Project] 'Jev-compatible' had no spec: building jevcompat

Open SourcePythonSide ProjectAPI
2026.09.19

[Side Project] Two hours of agent work in 35 seconds: building sessionreel

Claude CodeOpen SourcePythonSide Project
2026.06.23

Hanwha Ocean 2026 AX·AI Development (DT): An Additional-Offer Retrospective

CareerInterviewHanwha OceanAX
2026.03.29

KRAFTON AI R&D Hackathon Prelims: Teaching Multiplication with 7,000 Parameters, Recovering a Rule from Noise

HackathonKRAFTONPyTorchTransformer
2026.03.23

MOLOCO ML Engineer Intern Screening Interview: It Felt Like It Went Well, and I Was Still Rejected

CareerMOLOCOInterviewMachine Learning
2026.03.05

NAVER Place AI Internship: Edge Cases Decided the Test, the Job Description Decided the Interview

CareerInterviewNaverPython
2026.03.03

MOLOCO ML Engineer Intern Coding Test: How I Prepared and What I Learned

CareerMOLOCOPythonMachine Learning
2026.02.28

20th of 1,500 Teams at the Gemini Seoul Hackathon: EquiLaw Turns a Worker's Evidence into a Complaint

HackathonGemini APINext.jsGCP
2026.02.09

Eight Weeks at Hanwha Aerospace: Defining a Communication Anomaly Before Detecting One

CareerHanwha AerospacePythonMachine Learning

20258

2025.11.22

Hanwha Aerospace R&D Software Internship, Fall 2025: The Interview Process

CareerInterviewHanwha AerospaceMachine Learning
2025.11.14

SoftBank Hackathon 2025: Zero-Downtime Deploys from One Slack Command, Built in 48 Hours

DevOpsCI/CDAWSGitHub Actions
2025.08.27

LG Aimers Demand Forecasting Hackathon: What I Did (Ensemble Strategy & Experiments)

Time SeriesForecastingMachine LearningEnsemble
2025.08.12

SQL for AI Engineers: JOINs, Window Functions, and the Rest

SQLDatabaseData EngineeringFeature Engineering
2025.07.15

My SAP Final Interview (And Why I Didn’t Get the Offer)

CareerInterviewSAPCI/CD
2025.06.15

My 'Math God' Project: What I Learned from the Boostcourse Math OCR Course

Computer VisionOCRDeep LearningLaTeX
2025.02.10

Machine Learning Part 2: Prediction and Classification

Machine LearningPythonRegressionClassification
2025.01.30

Learning Python Ecosystem for Machine Learning

Machine LearningPythonNumPyPandas

20243

2024.10.28

Google ML Bootcamp: Building a Financial Advisor Chatbot with Gemma-2B

Machine LearningGoogle Machine Learning BootcampLLMFine-tuning
2024.10.25

LG Aimers 5th: Product Defect Detection with Stacking and SMOTE-ENN

Machine LearningData ScienceAnomaly DetectionPython
2024.02.07

Side Project: Building Jaksim Friend (React Native)

ProjectDevelopmentReact NativeTypeScript