11 posts
![[Career] Samsung Electronics DX G-CS Experienced Hire Interview (AI Vision & Data Optimization)](assets/posts/career-samsung-dx-gcs-2026/cover.jpg)
A first-hand review of Samsung Electronics DX division's G-CS (Global CS Center) experienced-hire process from late 2025 to early 2026: document screening, phone interview, CBT, Work Sampling, and the hiring-manager interview.
![[Admissions] KAIST Grad School Interview (Mechanical Engineering) - Oral Exam Questions & Final Rejection](assets/posts/kaist-grad-mech-interview/cover.webp)
A first-hand review of the 2019 KAIST Mechanical Engineering grad school interview: the real oral-exam questions in the thermo-fluids and dynamics-solids rooms, and how it ended in a final rejection.
![[Admissions] Yonsei Grad School Interview (Mechanical Engineering) - Oral Exam Questions & Timeline](assets/posts/yonsei-grad-mech-interview/cover.webp)
A first-hand review of the Yonsei Mechanical Engineering grad school interview: the application timeline, research plan, and the real oral-exam questions asked.
An undergraduate thesis from 2019 — using a neural network (ANN) to predict PM2.5 concentrations 6/12 hours ahead. 94,225 observations from weather + air-quality data, AIC·VIF variable selection, Window Learning. Plus the time-lag pitfall discovered two years later.
7 implementation modules (Java) that show up repeatedly in Samsung-style simulation problems — 90° rotation, Periodic Boundary Condition (PBC), reverse direction, multi-condition sort, BFS, spiral coords, concurrent List remove. Plus 3 traps I fell into. Based on codetree / Baekjoon past problems.
![[Summit] AWS Summit Review](assets/posts/aws-summit-2024/cover.webp)
AWS Summit Seoul 2024 — walking the booths and sorting the trends into three buckets: generative-AI serving (chatbots, email, copilots, image-gen), multi-cloud CMP, and API gateway / middleware. 'Ideas converge — UX and performance is where companies actually win.'
![[Admissions] KAIST Graduate Written Exam (Mechanical Engineering) — Review (1)](assets/posts/kaist-grad-mech-written-set1/cover.webp)
KAIST Mechanical Engineering grad school written exam (Aug 2019) — Set 1 (5 problems, 2 hours) recap. Math · Solid · Dynamics · Thermo · Fluid (one problem each). ODE, Von-Mises stress, Work & Energy, Bernoulli + Energy equation, hydrostatic force on curved surface.
![[Admissions] KAIST Graduate Written Exam (Mechanical Engineering) — Review (2)](assets/posts/kaist-grad-mech-written-set2/cover.webp)
KAIST Mechanical Engineering grad school written exam (Aug 2019) — Set 2 (5 problems, 2 hours) recap. Eigen value/vector · Strength design procedure · rigid-body Work & Energy · max-work thermo problem · Navier-Stokes Couette flow.
![[New Grad] Hyundai Motor — CarCloud Role — Coding Test + 1st Interview (Rejected) Recap (2023 H1)](assets/posts/career-hyundai-carcloud-newgrad-2023/cover.jpg)
Hyundai Motor 2023 H1 new-grad recruitment for CarCloud role — aptitude + AI interview (ViewInter, 12 questions) + coding test (Softeer, Java, 3 problems) + 1st interview (30-min pre-assignment + technical 1:3). Self-graded 4/6 well-answered; still rejected at the 1st round. Keyword recap: API Gateway, WebFlux, encryption.
![[New Grad] LG Electronics - Coding Test & Interview (Final Rejection) Recap](assets/posts/career-lg-electronics-newgrad-2022/cover.jpg)
2022 H2 LG Electronics new-grad recruitment (Gasan R&D Campus, H&A division) — coding test (Programmers, Java, 3 problems: full · full · partial) + aptitude + 1st interview (research presentation) + 2nd interview (executive + English OPIc) → finally rejected. A case where role misalignment shaped the outcome.
![[New Grad] KT DS - Coding Test & Interview (Final Offer) Recap](assets/posts/career-ktds-newgrad-2021/cover.jpg)
2021 H2 KT DS new-grad recruitment, Application SW Dev/Operations role — aptitude + coding test (Programmers, Python, 3 problems: 2 algo + 1 SQL) + 1-day interview (pre-assignment PT + technical 4:1 + executive group). A muddy technical interview that somehow ended in a final offer.