Tyassesami Ganesha Siwi

Available to hire

I am a thoughtful writer and content strategist with nine years of experience across global brands and tech. I connect creativity with structure to create simple experiences.

About

I am a thoughtful writer and content strategist with nine years of experience across global brands and tech. I connect creativity with structure to create simple experiences. I work well in hybrid environments and collaborate with teams. I also use AI to speed up research and idea testing while keeping the final decisions in my hands.

I’ve led voice and tone governance, built UX writing assets, and translated technical concepts into clear narratives for product launches. I thrive in cross-functional settings, mentor teammates, and continuously refine content to be accurate, accessible, and engaging for global audiences.

  • Joined November 2025

Skills· 1

Languages

  • EnglishFluent
  • GermanAdvanced
  • JapaneseBeginner
  • IndonesianFluent

Industry experience

  • Media & Entertainment
  • Software & Internet
  • Retail
  • Financial Services
  • Professional Services

More experts in Tokyo, Japan

Work experience

Copywriter & Content Creator · Buddybrand Berlin GmbHDec 2022 – Dec 2022 · 1 mo

Delivered digital and integrated campaigns for FMCG and F&B brands (e.g., Coca-Cola, Pizza Hut, Garnier, Rexona, Ferrero) and for retail, finance, lifestyle, and automotive clients (e.g., Lidl, ING Bank, Porsche Design, Mercedes-Benz, Ford). Developed website copy, social content, digital ads, scripts, taglines, and promotional materials; supported campaign planning and digital execution. Created on-brand content for Bosch, Audi, Smart, and Dr. Oetker, and contributed to pitch materials.

Copywriter & Content Creative · Jupitos Germany GmbHDec 2019 – Dec 2019 · 1 mo

Delivered digital and integrated campaigns; built beauty and food content as a nano influencer, informing short-form content strategy for Lidl Germany. Wrote website copy, social content, digital ads, scripts, taglines, and promotional materials; collaborated with creative directors, strategists, and designers to refine concepts and support pitches.

Education· 6

UX Design Postgraduate Diploma · Steinbeis Hochschule Berlin2030 – 2025
Bachelor of Art Visual Communication Design · Trisakti University2008 – 2013
Brand Alignment & Governance · Miami Ad School Europe2030 – 2025
UX Design & Learning System Design · Trisakti University / Self-Directed Studies2030 – 2025

Certifications and awards

Copywriting for Advertising2024 – 2025
UX Writing and Brand Communication Certification2030 – 2025
Project Management Certification2030 – 2025
UX Design Certification2030 – 2025

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