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RAILS SAAS, AI INSIDE
SHIPPED SOLO

Taywind is an independent software studio — one engineer who owns the whole build, schema to deploy. 4 years of production Rails SaaS: healthcare, IP management, employee engagement. AI is a first-class feature, not the headline.

See shipped work
Pixel art: a laptop on the grass beside terraced rice paddies, with the Saigon skyline on the horizon
Ruby on Rails PostgreSQL Sidekiq ruby_llm Hotwire Cloudflare Workers Astro OpenRouter Ruby on Rails PostgreSQL Sidekiq ruby_llm Hotwire Cloudflare Workers Astro OpenRouter
§ I Capabilities Ledger

Built where it matters.

Patterns proven in healthcare SaaS, IP management, and employee engagement — not demoware.

  1. № 01

    Workflow Engines

    Hydration templates, triggers, conditions, actions. Shipped on Novalexi (IP automation) and Feedback Robot (review aggregation).

    /workflow-engine
  2. № 02

    AI Integration

    ruby_llm chat + analysis, RAG over your data, prompt orchestration. AI as a feature inside your product — not a wrapper.

    /ai-integration
  3. № 03

    Rails SaaS Backbone

    Rails + PostgreSQL + Redis + Sidekiq. Multi-tenant patterns, background jobs, audit trails. The boring parts done right.

    /rails-saas
  4. № 04

    Edge-Ready

    Cloudflare Workers deployment (this site runs there). Sub-50ms responses globally. No server to babysit.

    /edge-ready
  5. № 05

    Integrations That Stick

    Fitbit, Google Fit, Amazon Gift Cards, SendGrid, S3, OAuth. Real production wiring, not hello-world.

    /integrations
  6. № 06

    i18n From Day One

    Vietnamese and English routed by middleware. Add locales by dropping a JSON file. No retrofits later.

    /i18n-ready
§ II Engagement Models

Three ways I work with you.

Fixed scope. Honest timelines. No hand-offs, no agency overhead.

01

SaaS MVP (4–8 weeks)

Rails + Postgres + auth + billing + first AI feature. Real users on real infra by week 8.

Start a build
02

Workflow Engine

Triggers, conditions, actions. Templates that hydrate at runtime. Same pattern that powers Novalexi.

See an example
03

Drop AI Into Your Product

RAG, chat, analysis, agents. Plugged into your existing Rails or Postgres. Shipped in weeks, not quarters.

Scope a feature
§ III The Operator

One engineer. Full accountability.

4 years shipping Rails SaaS. Healthcare, employee engagement, IP management, workflow engines, AI integrations.

Full-Stack Ruby on Rails Engineer with 4 years building scalable SaaS. Led healthcare apps for Japanese clients at SUN* INC, shipped features on TINYpulse (WebMD Health Services), now developing foodservice SaaS at MealSuite (394M+ meals/yr). On the side: solo-built Novalexi IP management with workflow engine + AI via ruby_llm, plus automation + review aggregation on Feedback Robot.
Ledger of Work
2026 — present

Ruby on Rails Developer at MealSuite

Foodservice SaaS serving 394M+ meals/year across healthcare and senior living. Rails, PostgreSQL, Redis, Sidekiq.

2024 — 2026

Full-Stack Developer at TINYpulse · WebMD Health Services

Rails + React microservices for employee engagement. Performance tuning, DB query optimization, tech-debt reduction.

2021 — 2024

Software Engineer at SUN* INC · Japan

Led healthcare apps for Japanese clients — extended a 2-month engagement to 1 year. Mentored 4 devs. Fitbit / Google Fit / Amazon Gift Card integrations, OAuth, DynamoDB single-table.

2024 — present

Solo Backend Developer at Novalexi · IP Management SaaS

End-to-end build. Workflow engine with hydration templates. AI chat + analysis via ruby_llm. S3 + SendGrid. Multi-tenant on roadmap.

§ IV Case Dossier

Shipped, not slideware.

Two solo freelance builds. Both running in production.

Pixel art: a desk with a monitor showing a blank application window, stacked document folders, a rubber stamp and a filing cabinet
Dossier № 01 Private client

Solo backend, end-to-end

Novalexi · IP Management SaaS

Architected and built an Intellectual Property management platform from schema to deploy. Workflow engine with hydration templates. AI chat + analysis via ruby_llm. Multi-tenant on the roadmap.

Outcome

Replaced a fragmented stack with one cohesive system. AI features now power day-to-day IP workflows.

Rails PostgreSQL ruby_llm S3 SendGrid
Pixel art: a desk with a monitor showing a row of star ratings above a radar dial, a satellite dish and a stack of cards
Dossier № 02 Live

Backend — Automation + Radar features

Feedback Robot · Survey + Review Aggregation

Built the Automation feature (workflow engine: triggers, conditions, actions) and the Radar feature (review aggregation from Google, Facebook, Yelp via webhooks).

Outcome

Real-time event processing on a live platform serving feedback at feedbackrobot.com.

Rails PostgreSQL Webhooks
§ V Terms

Simple, honest pricing

One fixed price agreed before work starts — or a monthly retainer. No surprise invoices. You contract with Taywind Co., Ltd; the build is delivered by one engineer, end to end.

§ VI Correspondence

Get in touch.

Have a project in mind? Let's talk. I reply within 24 hours on business days.