I played a pivotal role in helping Mercari grow from a startup into a publicly traded multi-billion dollar company. I developed key features for the app and led some of our most successful marketing campaigns, significantly boosting our market presence. I created a design system that saved millions and spearheaded a complete company rebrand. Additionally, I was instrumental in growing our business in the US, helping to expand our reach and solidify our position in a key market.

As the sole developer, I led all design initiatives across product, video, and website domains. Concurrently, I managed the financial landscape, oversaw hiring processes, maintained accounting records, and directed all marketing efforts for our startup. I also supervised in-house projects, including installations and product development, collaborating with external entities for manufacturing. Notably, I successfully launched a Kickstarter campaign based on one of our flagship projects.

I leveraged my startup acumen and creative prowess to spearhead the company's growth trajectory from ground zero, actively shaping pivotal decisions as a core team member. Overseeing all design facets—from branding to website development and brochure creation—was integral. Crafting captivating landing pages, producing, and fine-tuning advertisements for impactful marketing campaigns were among my achievements. Notably, I meticulously crafted a comprehensive brand guideline, ensuring a cohesive brand identity across all touchpoints.

Crafted and animated captivating stage designs for renowned artists such as the iconic AKB48, showcased in the highly acclaimed "Kouhaku Uta Gassen" of 2013, the most-watched event of the year. Employed cutting-edge projection mapping technology to project intricate layouts onto the stage, seamlessly integrating visual storytelling with live performances. Collaborated closely with a select team of industry professionals, adeptly navigating high-pressure scenarios and stringent deadlines to deliver exceptional results within the designated timeframe.

I utilized my international background and expertise to enhance one of the company’s main services, ensuring it was more user-friendly for an international audience. I collaborated closely with internal teams on diverse in-house projects, notably spearheading the development of an AR promotion that evolved into a dedicated department. Additionally, I played a key role in proposing and establishing new divisions within the company.