Takuma Yoshioka

• Consulting on the adoption of Spec-Driven Development (SDD) with Claude Code and the Gemini CLI; directing the end-to-end training curriculum for enterprise teams.
• Leading the development and validation of SDD methods in a new paradigm (vibe prototyping → specification extraction with feedback → SDD), and codifying reusable playbooks.
• Serving as Product Manager to stand up validation products: defining scope and roadmaps, and coordinating cross functional delivery.

• Content director for Enterprise Generative AI training focused on enabling business adoption.
• Led end-to-end content development, leveraging AI across the team to deliver ~1,000 slides and 36 hours of video within three months.

• Provided learning support and career guidance to 15+ learners through online 1:1 and group sessions.
• Established the mentoring playbook and service standards as the program’s first mentor.
• Coached scientific thinking, SQL, analytical reporting, and Python/Machine Learning fundamentals; reviewed projects and provided targeted, actionable feedback.

• Led development of algorithms for driving-behavior event detection using smartphone GPS and inertial sensor data.
• Owned technical direction and project management across roadmap, sprint planning, and delivery.
• Designed and validated new algorithms, conducted data analysis, and produced technical proposals for the CTO.
• Coordinated a fully remote, part time cross border team with Vietnamese engineers; established async workflows and code review practices.

• Engaged under a services contract with TOYOTA TSUSHO SYSTEMS to continue responsibilities with the same team during a corporate transition.
• Initiated company wide investment and planning for new digital solutions through business data analytics, opportunity sizing, and prioritization.
• Led the pivot toward an IT consulting services model, defining offerings, pricing, and go-to-market.

• Established the company’s new business planning framework and launched a new team, scaling to five members within three years; reported to the President and Division Manager.
• Built a no-code–driven digitization practice (bubble.io) and IT consulting capability, delivering 10+ projects totaling 20M+ THB and becoming a cornerstone of the application development business.
• Led cross functional issue resolution and initiatives tied to automotive CASE transformation across business and technical domains.

Served as Project Manager and Data Scientist.

• Built a discrete-event simulator for MaaS planning (Python/simpy); led analysis, QA, and client communication; managed a 40M JPY program over three years.
• Developed heuristic floor plan automation algorithms (C#) with a major construction firm; explored cross industry rollout; delivered a 30M JPY, two year project.