Available for Projects
Jakarta Metropolitan Area
Steven Jonathan.
Network Engineer | Cybersecurity Analyst | Software Developer
About.
Fourth-year Informatics student at Universitas Multimedia Nusantara with a strong focus on cybersecurity, networking and system engineering. Actively involved in building simulated infrastructures, managing Linux based systems and configuring networks. In parallel, I also contribute to fullstack web development and software development projects. Passionate about designing secure and scalable systems, and always eager to learn and grow through real-world problem solving and collaboration.
Education.
Universitas Multimedia Nusantara
Bachelor of Informatics Engineering
Aug 2023 - Jun 2027
GPA: 3.82/4.00
Technical Skills.
Systems & Infrastructure.
Linux
FedoraUbuntuRHELopenSUSEBash
Virtualization
VMWareVirtualBoxQEMU
Services
NginxApacheSSH
Networking & Security.
Networking
TCP/IPVLANSubnettingRouting
Security
FirewallIDS/IPS
Tools
WiresharkNmapBurp SuiteGNS3
Software Engineering.
Frontend
VueReactTailwindCSS
Backend
Node.jsExpressLaravel
Database
MySQLFirebase
Work Experience.
Network Engineer Intern
PT. RJGF International Indonesia
Feb 2026 - Present
- Assist in presenting IT products and network solutions to customers.
- Support quotation preparation and recommend suitable products based on customer requirements.
- Help troubleshoot basic to intermediate network issues (on-site and remote), including deployment, configuration, and testing under supervision.
- Assist in designing simple network topologies and preparing documentation (topology, BoQ, proposals).
- Follow up with customers and partners for project updates and technical requirement clarifications, and support sales/solution engineers with presentations, reports, and training materials.
Organizational Experience.
Head of Technical / Blue Team
UMN Cybersecurity Communities
Mar 2025 - Apr 2026
- Designed and implemented the network topology for the community’s cybersecurity lab, simulating real-world attack and defense environments.
- Configured secure wireless connections and ensured stable network segmentation for attacker and defender nodes.
- Installed and maintained various operating systems (Fedora, Kali Linux, Ubuntu, RHEL, Windows) to support lab operations.
- Participated in Capture the Flag (CTF) competitions, focusing on defensive tactics and system hardening.
- Provided technical guidance and training for new members in system setup, blue team methodologies, and operational security.
Research and Development Member
HMIF UMN XV
Dec 2024 - Dec 2025
- Conducted research to support the planning and execution of key work programs.
- Served as Person in Charge (PIC) for company visits, managing outreach and communication with partner companies.
- Assisted in preparing technical equipment (mixers, projectors, audio systems) prior to internal meetings and events.
Web Coordinator
BYTE 2025
Apr 2025 - Nov 2025
- Coordinated and led the web development team for BYTE 2025, working closely with visual design and publication divisions.
- Developed a comprehensive event management system using Laravel and Vue.js, including secure authentication for users and committee members.
- Developed the frontend interface with Vue.js and TailwindCSS to ensure responsiveness and user engagement.
- Led and shaped UI/UX direction to ensure a user-friendly and visually consistent interface.
Frontend Developer
UMN Festival 2025
Mar 2025 - Nov 2025
- Contributed to frontend and backend development of the UMN Festival 2025 web platform.
- Developed dynamic user interfaces using React and Inertia.js for responsive UX.
- Collaborated on backend development using Laravel (routing, controller logic, database integration).
- Worked with design and content teams to integrate visuals and data workflows.
Head of Logistics
Perkenalan Prodi Informatika 2025
Jan 2025 - Aug 2025
- Led the logistics division for the Informatics Program Introduction event.
- Managed procurement and distribution of logistics (consumption, merchandise, sound systems).
- Coordinated setup, equipment readiness, and execution with multiple departments.
- Delegated tasks, monitored progress, and ensured alignment with event timeline and goals.
Head of Logistics
Garuda Hacks 6.0
May 2025 - July 2025
- Oversaw end-to-end logistics planning for a national-level hackathon event.
- Coordinated event area setup (judge tables, demo zones, rest areas).
- Ensured availability of technical equipment.
Frontend Developer
Infinite 2024
Aug 2024 - Nov 2024
- Developed a responsive page website using React for Infinite 2024.
- Ensured clean code structure and component reusability.
- Collaborated with design team to implement UI according to branding guidelines.
Projects.
MAC Overhead Benchmark
CPythonBashLSMAppArmorSELinux
- Developed a C microbenchmark framework to measure Linux MAC latency overhead at the syscall level with nanosecond precision.
- Engineered a reboot-aware automation pipeline via GRUB manipulation to isolate performance variables across identical environments.
- Implemented high-precision telemetry using CLOCK_MONOTONIC_RAW and IQR outlier filtering to eliminate hypervisor virtualization noise.
- Built a Python pipeline for multi-phase metrics ingestion, per-iteration outcome validation, and statistical latency analysis.
LOLBin Watcher
RustWindows APIsysinfo
- Built a lightweight Windows process monitoring tool in Rust for real-time threat detection.
- Detected LOLBin abuse and suspicious executions from user-writable paths (Temp, AppData, Downloads).
- Extracted PE VersionInfo metadata to identify renamed binaries that evade name-based detection.
- Generated structured JSONL logs with severity classification for SOC-style triage.
BYTE 2025 Website
LaravelInertiaVue
- Developed and maintained the official website using Laravel with Inertia.js and Vue.
- Implemented role-based authentication and secure access for committee and administrative users.
- Coordinated with design/publication teams for visual consistency and usability.
- Optimized UI components for performance and responsiveness.
UMN Festival 2025 Website
LaravelInertiaReact
- Contributed to the development of the official website as part of the web team.
- Built interactive UIs using React and Inertia.js for seamless navigation.
- Ensured responsive design and smooth UX across devices.
GluCare Mobile Application
KotlinFirebaseTensorFlow Lite
- Developed an Android healthcare assistance app using Kotlin.
- Implemented Google Login and Firebase services for user management and storage.
- Integrated TFLite model to detect and classify wounds.
- Designed end-to-end data flow between app, ML inference, and backend services.
Arusta Website
LaravelTailwindCSS
- Developed a web platform for a UMKM photography business.
- Implemented clean responsive UI for browsing/ordering services.
- Built backend handling for service listings and order submissions.
Infinite 2024 Website
LaravelInertiaReactBun
- Developed a modern responsive event website using Laravel + Inertia + React.
- Applied component-based architecture for maintainability and scalability.
- Utilized Bun to optimize development speed and dependency management.
Competitions.
Arkavidia 9.0 - Capture The Flag (CTF)
Participant
GoogleCTF 2024 - Capture The Flag (CTF)
Participant
Gemastik 15 - Capture The Flag (CTF)
Participant
LYKNCTF 2026 - Capture The Flag (CTF)
Participant