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William Limantara

@williamlimantara

Software engineer at Asia Pacific Truck & Bus Sdn. Bhd. who replaced spreadsheet fleet tracking with a centralized web platform.

Indonesia

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At Asia Pacific Truck & Bus Sdn. Bhd., I developed 11 React feature modules for live vehicle status and fleet inspection data. I connected the frontend to .NET backend REST APIs, replacing manual spreadsheet tracking with a centralized web platform.

I implemented client-side caching with TanStack Query, removing the load delay that blocked frontend rendering. I also containerised the app with Docker and automated delivery to Azure staging.

At Pearler, I tested the web platform with Burp Suite and OWASP ZAP, combining black-box scanning with manual testing. Our team found five vulnerabilities, including an authentication weakness and missing rate limiting on a paid SMS feature; I documented reproduction steps, business impact, and remediation priorities.

At the University of New South Wales, I delivered tutorials and labs on networking and guided students through protocol analysis across Ethernet, IP, TCP, UDP, and HTTP. I bring a developer’s understanding of web systems and a tester’s habit of asking how they fail, applying OWASP Top 10 thinking to authentication and access control.

Experience

Work history, roles, and key accomplishments

Academic Tutor

University of New South Wales

May 2025 - May 2026 (1 year)

Delivered weekly tutorials and lab sessions to 25 students on core networking topics including congestion control, routing, IP addressing, and reliable data transmission. Guided students through protocol analysis using packet capture tools and assessed lab submissions with written feedback.

TCP IP Network Protocols Wireshark Teaching Assessments

Software Engineer

Asia Pacific Truck & Bus Sdn. Bhd.

May 2025 - Aug 2025 (3 months)

Developed 11 feature modules in a feature-based React architecture using TanStack Query and Tailwind CSS to display live vehicle status and fleet inspection data. Implemented client-side caching, connected frontend to REST APIs, and owned the deployment pipeline end to end with Docker and Azure.

React Tanstack Query Tailwind REST APIs Docker Azure CI CD Jira Confluence

Penetration Tester

Pearler

Sep 2024 - Nov 2024 (2 months)

Tested Pearler's web platform in a two-person team, using Burp Suite and OWASP ZAP for black-box scanning and manual testing. Found 5 vulnerabilities (4 High, 1 Medium) and wrote a detailed vulnerability report with replication steps and business impact.

Burp suite OWASP ZAP OWASP Top 10 Penetration Testing Vulnerability Assessment

Education

Degrees, certifications, and relevant coursework

University of New South Wales

Bachelor of Science, Computer Science

Activities and societies: 1x Hackathon Runner Up, 1x Dean’s Honour List

Bachelor of Science in Computer Science from the University of New South Wales, with relevant coursework in data structures, algorithms, and web application security.