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Toronto, Canada · @cureseven

Nana
OGASAWARA

Software Engineer · Project Manager

Backend engineer with 7+ years of experience in PHP, MySQL, large-scale web services, and technical project management. Experienced in performance optimization, system operations, team coordination, and improving engineering workflows.

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cureseven, Nana's personal brand character

personal brand character — “cureseven”

Database tables
1,300+
Records
100–200M
Monthly visits
~150M
Requests / minute
~60k

Scale of the e-commerce platform maintained at BASE, Inc.

Technical Skills

Backed by real products — at work, and in my own projects.

At workPersonal projects

Backend

  • PHP
  • CakePHP
  • Laravel
  • Ruby on Rails
  • Hono
  • Next.js

Database

  • MySQL
  • Redis
  • OpenSearch
  • PostgreSQL
  • Prisma
  • Supabase
  • Cloudflare D1

Frontend

  • Next.js
  • React
  • TypeScript
  • Tailwind CSS
  • React Native
  • Firebase

Infrastructure

  • AWS
  • Docker
  • SES
  • SNS
  • SQS
  • Route 53
  • Vercel
  • Cloudflare Workers

Monitoring

  • New Relic
  • Sentry

Development

  • Agile
  • Scrum
  • DDD
Career

Seven years across e-commerce, web services, and marketing platforms.

Each role below expands into the projects done there — the problem, the decisions made, and the outcome, not just a list of frameworks.

  1. BASE, Inc.

    2021.02 — 2026.07

    Software Engineer / Project Lead

    Backend development and technical leadership on a large-scale e-commerce platform, combining hands-on engineering with project management.

    • Owned backend features and operational improvements across a platform with 1,300+ database tables.
    • Led performance optimization work: query analysis, indexing strategy, and reducing load on hot paths.
    • Acted as project lead for cross-team initiatives, coordinating engineering, CS, and business stakeholders.
    • Improved on-call and operational workflows, including monitoring, alert triage, and runbook documentation.
    • Mentored engineers through code review, design discussion, and onboarding documentation.

  2. Appirits, Inc.

    2020.08 — 2021.01

    Full-stack Engineer

    Full-stack development on web services, working across server-side implementation, database design, and frontend delivery.

    • Implemented features end to end, from schema design to UI.
    • Handled maintenance and bug triage for running services.

  3. Willgate, Inc.

    2019.04 — 2020.07

    Software Engineer

    First engineering role: server-side development for web marketing products, with an emphasis on data handling and reliability.

    • Built and maintained backend features in PHP against MySQL.
    • Participated in agile development and release operations.

Other Experience

  • NORD LYON — Café Staff2026.08 — PresentToronto, Canada

    Full-time café staff, working in customer service and daily café operations.

Side Projects

Small apps, designed and shipped end to end on my own.

Outside of work, I build and run these solo — from schema design to the domain and deployment.

Phrasal Verb Master

A web app for efficiently memorizing and testing English phrasal verbs, built to make quiz-based review fast and repeatable.

  • Next.js
  • TypeScript
Eijournal

An English-journaling app for Japanese speakers learning English — free-form writing in Japanese and English, paired with AI-based corrections and score tracking over time.

  • Next.js
  • TypeScript
  • Supabase
Trophy Jar

A small personal-achievement tracker — log daily wins as "trophies", organize them by category, and follow other people's progress.

  • Next.js
  • PostgreSQL
  • Prisma
Cure Golf

A shared scorekeeping app for golf rounds — create a game, invite friends, and enter scores together in real time.

  • React
  • Hono
  • Cloudflare Workers
Education & Certifications

Formal background and continued practice.

Yamaguchi University

Department of Intelligent Information Engineering

Graduated 2019

Best Presentation Award — 2018 Graduation Thesis Review Meeting, Department of Intelligent Information Engineering

Certifications

  • Applied Information Technology Engineer (Japan)
  • Fundamental Information Technology Engineer (Japan)
  • AWS Certified Cloud Practitioner
  • AWS Certified Solutions Architect

Competitions

  • ISUCON10 — Final Round Participant
  • ISUCON 9 / 11 / 12 — Participant

Performance tuning contests — a direct extension of day-to-day work on query and throughput optimization.

Presentations

Talks and lightning talks.

Sharing what worked — and what did not — at conferences and internal sessions.

Off the clock

Outside of work

Formula 1
Former DAZN Japan F1 Ambassador. I used to introduce race highlights in a beginner-friendly way on DAZN Japan's social media. These days I just watch as a fan.
Singing
Former singer. I've sung in many forms since childhood — choir, vocals, a cappella, solo performances. Invite me to karaoke.
Specialty Coffee
Started hand-drip coffee back in 2020, during the pandemic. I also work at a café here in Toronto.
Fishing
As a university student, I loved fishing for horse mackerel and rockfish in the Seto Inland Sea.

Online I go by cureseven, a nickname that's stuck since middle school. I'm a huge Pretty Cure fan.