Teppei Suyama

A software engineer who finds problems and ships the fix

5+ years as an engineer / 211 Qiita articles / side work and personal dev in parallel

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90 % Regression testing cut Replaced manual test cycles with automated C# unit tests 60 % Overtime reduced VBA automation tools lifted the load across the whole team 40 h / mo RPA savings Fully automated sales operations with Power Automate +25 % Rate increase Promoted from PG to PL, trusted to extend the contract

Strengths

01

Drive from problem discovery to execution

I spot inefficiencies in day-to-day operations and ship fixes with VBA or Power Automate. Results include 60% less overtime and 40 person-hours/month saved with full RPA.

02

Full-stack skills from requirements to production

I cover the full cycle: requirements, design, backend, frontend, test automation, and operations. Certifications include Japan's Applied Information Technology Engineer, Java Gold, and LPIC.

03

Business outcomes through trust

I build alignment with stakeholders and turn it into results: +33% contract value, a PG-to-PL promotion (+25% rate), and renewed engagements after three-month trials.

Products

Products I build on the side

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Blog

Thoughts on technical learnings, retrospectives from personal projects, and career reflections.

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Profile

Basics, skills, certifications, career, philosophy and mottos — everything I bring as an engineer, in one place.

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Contact

Reach out any time for full-stack development or tech advice.

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