writing2026-09-12

Hanwha Aerospace R&D SW/ML Interviews, Fall 2025

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Summary

Original article title, translated: "Hanwha Aerospace R&D SW/ML Interviews, Fall 2025." Only the filename's unsupported slash was replaced with a middle dot. Published 2025-11-22 · slug hanwha-aerospace-2025-interview-retro · category "Hiring, interviews, and careers / Recruitment processes and interview retrospectives" · source article recorded in Korean and English.
The article covers the application, coding test, and first interview for Hanwha Aerospace's fall 2025 entry-level recruitment and internship-to-hire process, LS Division R&D_SW. Its English introduction describes leaving a quality-inspection team-lead role at an SK hynix partner, Hi-ENG, to become a developer who builds solutions, followed by LG Aimers hackathons and bootcamps before this application.
Application: emphasized the combination of hardware and manufacturing domain knowledge with software and AI skills, using the LG Aimers ensemble-diversity failure and legacy optimization as a military web developer to demonstrate problem solving. Coding test: four problems in two hours, around Baekjoon Silver-to-Gold level; solved three and ran out of time on one. The Zoom English assessment mainly asked everyday questions.
First interview: third floor of the Hanwha Building in Seoul, with a presentation and a panel technical interview. I chose a data-noise topic from three options, prepared for 30 minutes, and presented for about five minutes using the structure "problem definition, cause analysis, solution, expected effect." Technical questions covered preprocessing choices; the LG Aimers ensemble failure, where correlations of at least 0.9 demonstrated lost diversity; why defense and Hanwha, with repeated checks of motivation; and potential contributions after joining, including lightweight and optimized AI for MUM-T autonomous driving.
Reflection: the biggest gain from three days of interview coaching was learning to explain experience in the company's terms. I also used youth-support programs such as Icheon City's suit-rental service. This note records that the article did not specify the selection outcome. The later internship retrospective is Hanwha Aerospace Internship: Building a UGV Communication Monitoring Prototype.

Mentioned

Hanwha Aerospace: the prospective employer, LS Division R&D_SW.
Hanwha Aerospace internship (UGV-MON): the internship that followed this process.
LG Aimers 7th cohort: the ensemble-diversity failure discussed in the application and interview.
Quality-inspection team lead at an SK hynix partner: the role mentioned in the English introduction.

Wording rules

Do not use the UGV-MON claims "prediction five seconds ahead," "50% faster anomaly detection," or "6,200 LOC."

Connections

Writing · Applications · Hanwha Aerospace R&D entry-level recruitment, fall 2025
Atomic notes: Explain experience in the company's terms and preserve organized answer notes · Inspect ensemble diversity when a single large model fails; extra features can make models too similar
Concepts: UGV communication protocols · i18n and multilingual support · Running a technical blog · Semiconductor manufacturing · Presentations · Demand forecasting · Ensembles

Local graph

Notes 2 · Links 1

Backlinks

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Source posts

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