Hongjun Jang

Staff Software Engineer at Samsung Research
h0ngjun.jang [at] samsung [dot] com

Samsung Research, Staff Software Engineer, Mar. 2026 – Present

Conducted research on Agentic AI memory, on-device RAG, NL-to-Query, semantic retrieval, knowledge graphs, and resource-efficient AI systems.
Lead joint research with Samsung AI Center Warsaw and Samsung Research UK, defining problems and driving improvements in on-device RAG and NL-to-Query.
Samsung R&D Institute United Kingdom, Software Engineer, Oct. 2024 – Feb. 2026

Developed a commercial knowledge graph and reasoning engine with Oxford Semantic Technologies.
Implemented OAuth 2.0 for federated SPARQL queries, cross-platform C/C++ interfaces, and Azure CI/CD.
Samsung Research, Software Engineer, Jul. 2020 – Sep. 2024

Developed a core Personal Data Engine module for Samsung Galaxy, integrating an embedded knowledge graph database.
Developed multi-objective reinforcement learning algorithms; demonstrated ~20% base-station power savings in a U.S. telecom PoC.
Republic of Korea Army Cyber Operations Command, Software Engineer, 2018 – 2020

Developed Windows endpoint security software for Republic of Korea Armed Forces networks.
Samsung Research, Software Engineer Intern, 2016

Researched efficient mobile object recognition with Fast R-CNN and YOLO.

Bachelor of Science in Computer Science, Korea University, Mar. 2013 – Jul. 2020

GPA: 3.88 / 4.5 (93.8 / 100) · Advised by Professor Sungdeok Cha

"Method and Electronic Device for Providing Information Using Reinforcement Learning"
Hongjun Jang, Eunkyu Oh, Minsoo Kim, Taehun Kim, Yunhu Ji
US Patent US20240221018A1, 2024
"Electronic Device and Operation Method for Deciding Cell On/Off Threshold Based on Traffic"
Minsuk Choi, Kyungrae Kim, Hongjun Jang, Hyokyung Woo, Seowoo Jang
US Patent US20230032030A1, 2023
"Cell On/Off Parameter Optimization for Saving Energy via Reinforcement Learning"
Minsuk Choi, Kyungrae Kim, Hongjun Jang, Hyokyung Woo, Joan S. Pujol-Roig, Yue Wang, Hunje Yeon, Sunghyun Choi, Seowoo Jang
IEEE Globecom Workshops (GC Wkshps), 2021

Samsung AI Top 30 (AI Young Leader), 2026
Selected as one of 30 company-wide AI Young Leaders.
Samsung Research S/W Award for Individual, 2024
Samsung S/W Certificate: Expert Programmer, 2020
International Collegiate Programming Contest (ICPC)

Ho Chi Minh City Regional 2017, 3rd Prize
Daejeon Regional 2016, 4th Place (Minister of Science, ICT and Future Planning Award)
Daejeon Regional 2013, 10th Place (NHN Special Award)
Samsung Collegiate Programming Cup, 4th Place, 2016
Samsung Software Track Scholarship, 2016 – 2017
Full tuition for four semesters
Korea University Scholarship for Gifted Students in Science, 2013
Full coverage of tuition and admission fees

International Olympiad in Informatics (IOI), Student Assistant Coach, Korean National Team (2016); Training Camp Coach (2013 – 2017).
Korea Olympiad in Informatics (KOI), Coach and Problem Setter (2013 – 2017).