Skip to content
Jaehyun Jun
한국어

Jaehyun Jun · AI/ML Engineer

Building self-improving AI agents, grounded in multimodal intelligence.

I design agentic systems at AWS Professional Services and explore the loop engineering that helps them evaluate, learn, and improve—toward physical AI.

View projectsConnect on LinkedIn

Selected work

Featured work

A selection of systems I have led from problem framing to measurable results.

View all projects →

What I build

Agentic Systems

Agents, harnesses, and evaluation loops for complex enterprise workflows.

Multimodal Intelligence

Vision-language models and visual grounding that connect perception to reasoning.

Applied AI

Turning research ideas into reliable systems that create measurable product impact.

Career & research

Experience, education, recognition, and publications.

Work Experience

Amazon Web Services

2026 – Present AI/ML Engineer, AWS Professional Services Building AI agents for customers, focused on self-improvement and loop engineering.

SK Telecom

2019 – 2026 (joined from SK T-Brain) AI Engineer, Model Alignment team Developed multimodal large language models and personalized dialogue systems. See Projects for details.

Samsung Electronics Co., Ltd.

2013 – 2015 Software Engineer, Ultrasound Development Group Developed a measurement software platform for ultrasound diagnostic instruments.

Samsung Software Membership

2012 Software Engineer Developed creative software applications.

Education

Seoul National University

2017 – 2019 — M.S., Interdisciplinary Program in Neuroscience Bio-Intelligence Laboratory, advised by Prof. Byoung-Tak Zhang

Hanyang University

2006 – 2013 — B.S., Biomedical Engineering

Awards and Competitions

  • GQA Challenge 2019 — 6th place on test-dev with Relational Bilinear Attention Network (RBAN), June 2019.
  • VQA Challenge 2018 — 1st place in the single-model track and 2nd place in the ensemble track with Bilinear Attention Networks (BAN), June 2018.
  • KCC 2017 Outstanding Presentation Paper Award — Attention-based Goal-oriented Question Generation Model for the GuessWhat?! Game, July 2017.
  • Departmental Graduation Thesis Competition, Encouragement Award — Development of a Neurofeedback System, November 2012.
  • Global Software Contest, Bronze Award — Korea IT Professionals Association, SIP Protocol-based Media Conference, November 2012.

Publications

International Conference Papers

Korean Conference Papers

  • Jaehyun Jun, Byoung-Tak Zhang. “Path Selection Model for Continual Learning.” KCC 2018 (in Korean).
  • Jaehyun Jun et al. “Attention-based Goal-oriented Question Generation Model for the GuessWhat?! Game.” KCC 2017 (in Korean).
  • Jaehyun Jun, Eunsol Kim, Byoung-Tak Zhang. “Memory-based Story Learning for Conversational Question Answering.” KIISE Winter Conference 2016 (in Korean).

See Google Scholar for the complete publication record.

Invited Talk and Media Coverage

Last updated: