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‎src/content/resume.tex

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\documentclass[11pt,a4paper]{article}
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% Hwi Soo Kim – One‑page Resume (LaTeX)
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\documentclass[10pt,a4paper]{article}
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\usepackage[margin=1in]{geometry}
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\usepackage[hidelinks]{hyperref}
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\usepackage{enumitem}
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\usepackage{lmodern}
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\usepackage{fancyhdr}
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\usepackage{array}
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\setlist{noitemsep,leftmargin=*}
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\pdfcompresslevel=9
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\pdfobjcompresslevel=3
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\pdfminorversion=5
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\pdfimageresolution=150
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\pagestyle{fancy}
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\fancyhf{}
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\lhead{Hwi Soo Kim}
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\rhead{\thepage}
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\renewcommand{\headrulewidth}{0pt}
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%-------------------------------------------------------------------------------
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% Header & Footer
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%-------------------------------------------------------------------------------
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\pagestyle{empty}
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%-------------------------------------------------------------------------------
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% Custom Commands
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%-------------------------------------------------------------------------------
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\newcommand{\sectionheader}[1]{\vspace{4pt}\noindent\textbf{#1}\par\vspace{2pt}}
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\newcolumntype{L}[1]{>{\raggedright\arraybackslash}p{#1}}
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\newcommand{\ExpHeader}[4]{\textbf{#1} \hfill \textit{#2} \hfill #3\\[-4pt]
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#4}
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%-------------------------------------------------------------------------------
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% Document
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%-------------------------------------------------------------------------------
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\begin{document}
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%==================== HEADER ====================
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\begin{center}
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{\LARGE\bfseries Kim, Hwi Soo}\\[4pt]
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Software Engineer\\[8pt]
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\href{mailto:[email protected]}{[email protected]} |
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\href{tel:+442039513229}{+44~20~3951~3229}\\
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\href{https://linkedin.com/in/hwisu}{linkedin.com/in/hwisu} |
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\href{https://github.com/hwisu}{github.com/hwisu} |
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\href{https://blog.h4o.kim}{blog.h4o.kim}\\[4pt]
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Seoul, South Korea — Moving to UK (Youth Mobility Visa valid to Oct 2027)
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{\LARGE\bfseries Hwi Soo Kim}\\[2pt]
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Backend / Platform Engineer\\[4pt]
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\href{mailto:[email protected]}{[email protected]} ~|~ +44\,20\,3951\,3229 ~|~ \href{https://linkedin.com/in/hwisu}{linkedin.com/in/hwisu} ~|~ \href{https://github.com/hwisu}{github.com/hwisu}\\
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\end{center}
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\vspace{-8pt}
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\section*{Professional Summary}
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Senior backend engineer with 5+ years specializing in infrastructure modernization and cost optimization. Built complete backend architectures from scratch, stabilized systems serving 100M+ MAU during 10× traffic spikes, and reduced operational costs by 30\%+ while improving P95 response times by 50\%. Led technical teams and founded long-running developer communities.
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\section*{Technical Skills}
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\begin{tabular}{@{}p{2.8cm}p{12.5cm}@{}}
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\textbf{Languages:}& TypeScript, JavaScript, SQL, Kotlin\\
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\textbf{Backend:}& Node.js (NestJS, Express), REST, GraphQL\\
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\textbf{Databases:}& PostgreSQL, Redis, Query Optimization\\
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\textbf{Cloud \& Infra:}& AWS (EC2, Lambda, S3), Kubernetes, Docker, CI/CD, Terraform\\
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\textbf{Monitoring:}& Sentry, Datadog, AWS SNS/SQS\\
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\textbf{Practices:}& TDD, Performance Profiling, Agile Methodologies\\
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\textbf{Leadership:}& Technical mentoring, Code reviews, Team leadership
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\vspace{-4pt}
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%==================== SUMMARY ====================
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\sectionheader{Professional Summary}
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Backend engineer with 5+ years scaling early‑stage products (EdTech, e‑commerce, AdTech). \textbf{Specialised in AWS‑first, Kubernetes‑based architectures} that survive sudden 10$\times$ traffic bursts while cutting cloud spend 30\%. Equally comfortable shipping green‑field services in weeks or optimising legacy paths to 2$\times$ throughput. Moving to the UK on Youth Mobility Visa (valid~\textit{to~Oct~2027}).
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%==================== SKILLS ====================
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\sectionheader{Technical Skills}
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\begin{tabular}{@{}L{2.6cm}L{12.6cm}@{}}
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Languages:& TypeScript, Kotlin, JavaScript, SQL \\
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Backend:& Node.js (NestJS, Express), REST / GraphQL, CQRS, gRPC \\
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Databases:& PostgreSQL, Redis, Query Optimisation \\
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Cloud / Infra:& AWS (ECS/EKS, Lambda, S3), Kubernetes, Docker, Terraform, CI/CD \\
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Observability:& Datadog, Sentry, Prometheus/Grafana \\
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Practices:& TDD, Domain‑Driven Design, Performance Profiling, Agile/Scrum \\
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Leadership:& Tech mentoring, Code reviews, Team lead (2–3 engineers)
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\end{tabular}
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\section*{Professional Experience}
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\subsection*{Codeit Inc. — Software Engineer \hfill Sep 2023 -- Nov 2024}
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\textit{Seoul, South Korea (Hybrid)}
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\begin{itemize}
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\item Built Sprint coding bootcamp platform from scratch (NestJS + PostgreSQL) with social authentication and dynamic career features, serving 1,000+ students
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\item Increased program enrollment conversion by 10\%+ through automated government application workflows
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\item Achieved 95\% test coverage across unit and integration tests with CI/CD pipeline
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\item Developed internal A/B testing functions enabling data‐driven content optimization, improving user engagement by 15\%
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\end{itemize}
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\subsection*{Onthelook Inc. — Senior Software Engineer \hfill Feb 2023 -- Aug 2023}
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\textit{Seoul, South Korea (Hybrid)}
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%==================== EXPERIENCE ====================
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\sectionheader{Professional Experience}
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\ExpHeader{Codeit Inc.}{Software Engineer}{2023‑09~--~2024‑11}{Seoul (Hybrid)}
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\begin{itemize}
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\item Led team of 2--3 junior engineers during infrastructure modernization and cost optimization initiatives
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\item Reduced AWS infrastructure costs by over 30\% through systematic optimization and resource management
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\item Stabilized infrastructure during 10× traffic spikes with 10K+ concurrent users, protecting 60--70\% of monthly GMV during flash sales
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\item Reduced P95 API response time from 200 ms to 100 ms through query optimization and caching strategies
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\item \textbf{Built and launched} a full‑stack Sprint bootcamp platform in 4~weeks using NestJS~+~PostgreSQL; onboarded 3k students with zero downtime.
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\item Introduced CQRS read/write segregation and logical replication, enabling \textbf{10$\times$ traffic bursts} without performance degradation.
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\item Rolled out in‑house A/B infra (Feature Flags), boosting lesson engagement 15\%.
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\end{itemize}
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\subsection*{Sleek Corporation — Software Engineer \hfill Apr 2022 -- Jan 2023}
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\textit{Seoul, South Korea (Hybrid)}
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\ExpHeader{Onthelook Inc.}{Senior Software Engineer}{2023‑02~--~2023‑08}{Seoul (Hybrid)}
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\begin{itemize}
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\item Integrated Redis queues for effective traffic management during peak booking periods
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\item Designed distributed locking mechanism to handle concurrent booking requests at scale
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\item Implemented Kubernetes resource management and monitoring using Terraform and ArgoCD
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\item Led infra modernisation: implemented auto-scaling and queue-based architecture, \textbf{reducing AWS cost 32\%}.
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\item Refactored models and caching to \textbf{protect 65\% GMV} during 10$\times$ flash‑sale spikes.
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\item Coached 3 junior engineers; established code review rubric.
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\end{itemize}
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\subsection*{Trevari — Software Engineer \hfill May 2021 -- Dec 2021}
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\textit{Seoul, South Korea (Hybrid)}
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\ExpHeader{Sleek Corp.}{Software Engineer}{2022‑04~--~2023‑01}{Seoul (Hybrid)}
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\begin{itemize}
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\item As the only dedicated backend developer, improved infrastructure and systems from the ground up
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\item Incorporated AWS SNS/SQS queue management and instance scaling to optimize infrastructure
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\item Improved database query performance by 60\% through strategic indexing
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\item Mentored junior developers on system design and code review practices
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\item Designed Redis‑backed booking queue and distributed lock, eliminating double‑booking.
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\item Introduced Infrastructure‑as‑Code (Terraform~+~ArgoCD) for few microservices.
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\end{itemize}
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\subsection*{Tapjoy — Software Engineer \hfill May 2020 -- May 2021}
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\textit{Seoul, South Korea (Remote)}
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\begin{itemize}
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\item Worked in global engineering team serving 100M+ MAU across mobile advertising platform
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\item Improved user context server by implementing targeted optimizations using Rails, Elixir, and Go
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\item Built GDPR‐compliant data pipeline processing user events from 1B+ mobile devices, ensuring data privacy compliance across multiple jurisdictions
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\end{itemize}
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\subsection*{Miso Inc. — Backend Engineer / PM (PO) \hfill Sep 2019 -- Mar 2020}
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\textit{Seoul, South Korea (Hybrid)}
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\begin{itemize}
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\item Managed project planning and led A/B testing initiatives for user research and UI enhancements
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\item Refined search functionality resulting in measurable conversion improvements
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\item Collaborated with engineering team to implement data‐driven product features
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\end{itemize}
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\subsection*{Riiid — Software Engineer \hfill Jan 2019 -- Sep 2019}
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\textit{Seoul, South Korea (On‐site)}
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\begin{itemize}
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\item Reduced HTML payload sizes in problem context data pipeline, improving efficiency for content providers and end users
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\item Enhanced AWS Lambda‐based data pipelines processing millions of learning events
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\textbf{Other Experience (2019‑2021)}\\[-6pt]
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\begin{itemize}[leftmargin=1.4em]
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\item \textit{Tapjoy} – Improved user‑context service (Rails/Elixir/Go) for 100M+ MAU; built GDPR‑compliant data pipeline.
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\item \textit{Trevari} – Sole backend dev; cut query latency 60\%, implemented SNS/SQS queue‑based scaling.
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\item \textit{Miso (PM/Backend)} – Drove A/B tests and search improvements that lifted conversion.
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\item \textit{Riiid} – Optimised Lambda pipelines handling millions of learning events.
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\end{itemize}
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\section*{Education}
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\textbf{B.Sc. in Computer Engineering}, 2019\\
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\textit{ICPC programming contest club \& entrepreneurship club activities}\\
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140 CS credits in core areas: Algorithms, Data Structures, HCI, Operating Systems.
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%==================== EDUCATION ====================
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\sectionheader{Education}
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B.Sc. Computer Engineering, 2019\hfill (KAIST Academic‑Credit‑Bank)\\
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ICPC programming club; coursework in Algorithms, OS, HCI.
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\section*{Leadership \& Community}
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%==================== COMMUNITY ====================
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\sectionheader{Leadership \& Community}
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\begin{itemize}
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\item Founded and led developer book club for 4 years with consistent 10--20 active members, meeting monthly to discuss technical literature
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\item Co‐founded \href{https://midamss.org/}{midamss} that grew to Korea's largest education volunteer organization with 400+ university volunteers serving 4,000+ students annually
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\item Mentor to junior engineers across multiple organizations
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\item Founder, monthly developer book club (2019‑present): 150+ sessions, curated summaries on \href{https://blog.h4o.kim}{blog.h4o.kim}.
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\item Co‑founded \href{https://midamss.org}{Midamss}, Korea's largest volunteer tutoring NGO (400 volunteers, 4k students/yr).
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\end{itemize}
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\section*{Languages}
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\textbf{Korean:} Native \quad\textbf{English:} Professional working proficiency
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%==================== LANGUAGES ====================
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\sectionheader{Languages}
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Korean (Native)\;•\;English (Professional Working)
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\end{document}
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\end{document}

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