Ang Donna

National University of Singapore (NUS) Chemical Engineering, BEng (Hons).

Singapore

About

Chemical Engineering undergraduate at NUS with hands-on experience in 300 mm wafer wet bench etching and semiconductor process optimisation. Interned at Siltronic Singapore, where I conducted structured etching trials, analysed chemical bath stability, and supported SPC-driven improvements to process predictability and yield performance. Skilled in JMP, Excel, DOE, SPC, and root-cause analysis, with a strong foundation in chemical engineering fundamentals and manufacturing discipline. Research experience across materials science and energy systems has strengthened my experimental rigour and data interpretation skills. Actively seeking entry-level semiconductor roles in process, yield, or manufacturing engineering.

Experience

  • Process Engineer Internship Role at Siltronic AG
    Dec 2024 - Mar 2025 · 4 mos

    • Supported the wafer wet etching process by investigating acidic chemical bath interactions, with emphasis on etching chemistry stability and profile control. • Performed structured wet etching trials to study the impact of process conditions on wafer surface morphology and edge profile behaviour. • Proposed and implemented process adjustment strategies based on root cause analysis of bath degradation behaviour and wafer defect trends. • Used JMP and Excel to develop data visualisation tools for monitoring bath health, etch rate stability, and overall yield performance.

  • NUS Students' Design and Engineering Club (1 yr)
    • Director of Academic Affairs
      Oct 2023 - Sep 2024 · 1 yr

      - Engage with the local community through various initiatives, such as service-learning programs, continuing education, and partnerships with local organizations. - Develop and implement long-term strategic plans that align with the university's mission, vision, and values, and adapt to changing educational landscapes. - Focus on academic support services, extracurricular activities, and career guidance.

    • Global Ambassador (Hong Kong)
      Oct 2023 - Sep 2024 · 1 yr

      - Responsible for organizing and facilitating cultural exchange programs between universities in HK and SG. - Promote academic collaboration by identifying opportunities for joint research projects, faculty exchanges, and collaborative degree programs, working towards enhancing the academic quality of both universities.

  • Research Assistant at NUS Department of Materials Science & Engineering
    Nov 2023 - Jan 2024 · 3 mos

    • Designed experimental test matrices to improve Solid Oxide Fuel Cell (SOFC) performance and energy efficiency. • Collected and validated quantitative SOFC operational data, including voltage, current density, temperature profiles, and fuel utilization rates. • Analyzed qualitative research data using thematic analysis to identify gas usage behaviors, system design patterns, and key HERS-related challenges. • Generated over 20 actionable recommendations addressing SOFC design optimization, operational efficiency, and technology adoption barriers.

  • Research Assistant at NUS Department of Food Science and Technology
    Oct 2023 - Dec 2023 · 3 mos

    • Processed and prepared over 500 biological samples per month with 99% accuracy in labeling, handling, and documentation. • Maintained consistent turnaround times under high-throughput laboratory conditions and tight deadlines. • Implemented laboratory organization and workflow improvements, reducing sample processing time by 20%. • Collaborated effectively with cross-functional lab teams to support smooth daily operations and experimental continuity. - Prepare and maintain documentation required for product development and regulatory compliance.

  • Part-Time Waiter at East Coast Commune
    May 2023 - Oct 2023 · 6 mos