Full-Stack Ruby on Rails Engineer · 5 years · Building SaaS end-to-end
Currently at MealSuite (foodservice SaaS, 394M+ meals/year). Previously TINYpulse by WebMD and SUN* INC.
| Project | What it does | Stack |
|---|---|---|
| StuMana | Education center SaaS — students, tuition, attendance, parent reports | Rails, PostgreSQL, Hotwire |
| Quenify | Retention SaaS for salons — return reminders, POS, loyalty, booking | Rails, PostgreSQL, Hotwire |
| Tingee Ruby SDK | Ruby client for Vietnamese bank linking, virtual accounts, payment webhooks | Pure Ruby, zero deps |
| Novalexi (freelance) | IP management SaaS — workflow engine, AI via ruby_llm | Rails, PostgreSQL |
| Feedback Robot (freelance) | Survey platform — workflow engine with webhook triggers | Rails, PostgreSQL |
Experience & skills detail
- MealSuite (2026–present) — Foodservice management SaaS at scale. Rails, PostgreSQL, Redis, Sidekiq.
- TINYpulse by WebMD Health Services (2024–2026) — Employee engagement platform, Rails + React microservices.
- SUN* INC. (2022–2023) — Led healthcare app development for Japanese clients, mentored 4 developers.
- Freelance (Upwork) — Solo backend developer, end-to-end delivery on Novalexi and Feedback Robot.
| Category | Technologies |
|---|---|
| Backend | Ruby on Rails, Ruby, ActiveRecord, GraphQL, RESTful API, Sidekiq |
| Database | PostgreSQL, MySQL, DynamoDB, Redis, AWS S3 |
| Frontend | JavaScript, TypeScript, React, Hotwire/Stimulus, Tailwind CSS |
| DevOps | Docker, AWS (S3, EC2, Lambda, SNS, SES), Git, CI/CD, RSpec/TDD |
Full CV: https://lpwanw.github.io/CV/ — responsive, PDF export, ATS-optimized.