Demo Try a simplified ride-scheduling demo on synthetic data

Full-stack engineer. Making software that makes you money.

My auto-scheduler plans about 1,900 rides a day in about three minutes, and my billing automation generates 20,000+ government forms a month. Together they save over $500K a year in labor.

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Ryan AstaphanFull-Stack Software Engineer · Fort Lauderdale, FL · Remote

Selected work

What I've built

Software people use every working day: it plans their routes, bills their trips and tracks their rides.

Figures marked "Estimated by Ryan" are my own estimates, not audited numbers.

01Auto-scheduling· NorthStar

Auto-scheduler

In production · Sole engineer

A custom engine that plans a full day of pre-planned medical rides in about three minutes.

I built it alone: a custom engine in C#/.NET. It works in passes: seeding, construction, then improvement, and every pass uses one shared feasibility checker. It places wheelchair and ambulatory riders on a mixed fleet, inside time windows and hours-of-service rules, and carpools riders where it can. One solve runs millions of calculations. The company's schedulers still review the plan.

About 10 months to build · in production since mid-2026

  • C#
  • .NET
  • Scheduling and routing
  • Feasibility checking
Simplified ride-scheduling demo: a sample city seen from above, with a van picking up a rider.

A simplified illustration of the scheduling problem, not the real engine. Synthetic data: a sample city and made-up riders.

  • ~1,900rides a day, across about 250 vehicles
  • ~3 minper solve
  • ~$168Ka year saved in scheduling labor, about 6 full-time schedulers' hoursEstimated by Ryan
  • ~$225Ka year in empty-mile savingsEstimated by Ryan, from planned figures at owner prices
11-day test against the team's own plans
MeasureSchedulerTeam's plans
Empty miles per trip10.912.0
On-clock minutes per trip75.378.4
In-scope trips placed99%

Lower is better for miles and minutes. The test compares plans, not measured on-time performance.

02Automation

Billing and forms automation

In production · I built it

Government forms for every Medicaid and Medicare trip, generated automatically.

Every Medicaid and Medicare trip needs government forms. Filling them in by hand used to take about 64 hours of work every day: 8 people, 8 hours each. I built the system that does it now. Trip data comes from the transport software's API into Google Sheets, and iText7 fills in each form. It generates more than 20,000 PDFs a month and saves about $350K a year in labor.

Mock screens and made-up names.

  • 20,000+PDFs a month, generated automatically
  • 64 hoursof paperwork a day, now automated (8 people, 8 hours each)
  • Every tripMedicaid and Medicare forms filled in automatically
  • ~$350Ka year saved in labor
  • Transport software API
  • Google Sheets
  • iText7
  • PDF generation

03Architecture

Platform foundations

Still in use · Data models and API design

The data models the company's software still stands on, and the API design behind them.

I wrote the data models for every core entity, and they are still the foundation today. I laid out the API design with Postman and C#/.NET. Earlier, I designed and deployed .NET microservices on AWS: API Gateway, Cognito, Elastic Beanstalk, SNS, SQS and RDS. Teammates have since taken over AWS. I also built real-time GPS tracking for the driver app, within the limits of its service tier.

  • C#
  • .NET
  • AWS
  • API Gateway
  • Cognito
  • Elastic Beanstalk
  • SNS
  • SQS
  • RDS
  • Postman
  • Coredata models for every entity, still in use
  • Real-timeGPS tracking in the driver app

04Product design

Design and proof of concept

Led to a funded team · Sole developer and designer

I designed a replacement for the old dispatch software, then built the proofs that got a team funded.

I was the only developer in a brand-new department. I researched the old dispatch software with the dispatchers who used it. Then I designed its replacement alone in Figma: wireframes, visual design and interaction. I built the proof-of-concept web app and driver app in Next.js, Expo/React Native and Firebase. The proofs worked, and the owner funded a full engineering team to build the production apps. I mentored the new engineers and wrote the foundational docs.

  • 2 appsweb and driver proofs of concept, built solo
  • Fundedby the owner: a full engineering team, after the proofs worked
  • Figma
  • Next.js
  • React Native
  • Expo
  • Firebase

05SaaS product

SEO Tree

Work in progress · My own product

A SaaS product for SEO professionals, with Stripe billing and an interactive visual sitemap.

SEO Tree is my own product, and it is still a work in progress. I built the billing on Stripe: subscription tiers, 14-day trials, pro-rated upgrades and cancellation. I also wrote a custom layout engine that draws every page of a site as an interactive visual sitemap.

  • Stripetiers, 14-day trials, pro-rated upgrades, cancellation
  • Customlayout engine for the interactive sitemap
  • TypeScript
  • React
  • Next.js
  • Supabase
  • Stripe

06Mobile app

Radiant RT Symptom Tracker

Pilot · Sole developer

A mobile app for people going through radiation therapy.

Radiant has a daily check-in across five symptoms that takes about a minute, week-by-week guides matched to the treatment timeline, and a library of guided audio sessions. I was the sole developer, building it from the founder's concept in TypeScript with Expo and React Native, so one codebase runs on iOS and Android. It is in a pilot, not a public store release.

  • iOS + Androidfrom one TypeScript codebase
  • Pilotnot a public store release
  • TypeScript
  • React Native
  • Expo
Walkthrough video on YouTube. The player loads only when you press play.

Radiant provides educational support and does not replace your care team.

Radiant app, Today screen, greeting a sample user named Sam with a Start check-in button. Interactive demoTap to try the app
Interactive replica of the pilot app. Made-up data.

NextAuto-dispatchingIn progressBuilds on the scheduler with live vehicle GPS, live traffic and incidents, and live trip changes.

Ryan AstaphanFull-Stack Software Engineer

  • BasedFort Lauderdale, FL
  • WorksRemotely
  • RoleFull-Stack Software Engineer
  • At Hive TechSince Sept 2021
  • EducationBA, University of Florida, cum laude

About

Engineer and designer

I'm Ryan Astaphan, a full-stack software engineer in Fort Lauderdale, Florida. I work remotely. Since September 2021 I've built software for Hive Tech, which owns MedRide Transportation, an NEMT company in Colorado.

Before I wrote software for a living, I co-owned a tattoo studio in Chiang Mai, Thailand. I designed its website and learned SEO there. I've been the owner who pays for software and calls when it breaks. That still shapes what I build.

I work across the stack: TypeScript and C#/.NET, React and React Native, AWS and Firebase. I also design in Figma.

  • Sole engineer on a scheduling engine that runs in production.
  • Design to deploy Figma, front end, back end, cloud.
  • Mentoring and docs for the team that followed my proofs of concept.

Stack

Languages

  • TypeScript
  • C#

Front end and mobile

  • React
  • Next.js
  • React Native
  • Expo

Back end

  • .NET
  • Node.js
  • NestJS

Data

  • PostgreSQL
  • MySQL
  • MongoDB
  • Firebase
  • Supabase

Cloud and tooling

  • AWS
  • Docker
  • GitHub Actions
  • Stripe

Design

  • Figma

Education BA, University of Florida, cum laude (2006 to 2008)

Experience

Five years at Hive Tech

Sept 2021 to present

5 years

Remote

Hive Tech

Full-Stack Software Engineer

Owner of MedRide Transportation, an NEMT company in Colorado

  • Built the auto-scheduler alone in about 10 months. It plans about 1,900 rides a day across about 250 vehicles.
  • Built the billing-forms automation: more than 20,000 PDFs a month, saving about $350K a year in labor.
  • Wrote the data models for every core entity and laid out the API design.
  • Designed and deployed .NET microservices on AWS.
  • Designed and built the proofs of concept that led the owner to fund a full engineering team.
  • Mentored new engineers and wrote the foundational docs.

How it's made

This page, line by line.

Every page starts as an empty file. Keep scrolling and watch the top of this page get written.Watch the top of this page get written.

<nav class="pill-nav">
  <a class="on">Work</a> <a>About</a>
  <a class="btn">Resume</a>
</nav>
<p class="pill">Demo</p>
<h1>Full-stack engineer.
  Making software that
  makes you money.</h1>
em { color: var(--pink);
     font-style: italic; }
<p>My auto-scheduler plans about 1,900 …</p>
<a class="btn pink">Resume</a> <a>LinkedIn</a>
<ul class="proof">
  <li>~1,900</li><li>~250</li><li>20,000+</li>
</ul>
/* built from content.json */

The code is shortened to fit. Every word in it comes from the same content file as the top of this page.

Hire me for a project

Need something built?

I also take on outside projects for small businesses. You work with me directly, from the first email to launch.

What I can do for you

Web and SEO work

SEO · Built from zero

thai.tattoo

Google Analytics, May 2022 to May 2024.

A tattoo-ideas blog I built from zero in May 2022. In two years it reached 1.8M visitors and 2.6M page views.

1.8Mvisitors

2.6Mpage views

The rank climbs in the film are an illustration.
Daily visitors, May 2022 to May 2024Approximate: traced by hand from Google Analytics.

Web design

Neo Muay Thai

Concept project, fictional client

A full site for a fictional Muay Thai camp, made to show the whole process from brand to finished pages.

Neo Muay Thai concept site, the full home page from top to bottom.
Neo Muay Thai concept site on a phone.

Concept project, fictional client.

Web design · Five languages

Busy Bees Preschool

Photos blurred for privacy

A website for a preschool in Phuket, Thailand, in five languages. Children's photos are blurred here for privacy.

Busy Bees Preschool website, the full home page from top to bottom. Children's photos are blurred.
Busy Bees Preschool website on a phone.

Photos blurred for privacy.

Start a project

Tell me what your business does, what you want to change, and any deadline or budget.

Prefer plain email? Email me about a project

FAQ

Short answers

What did you build alone?

I was the only engineer on the auto-scheduler and the only developer on the proofs of concept. The engineering team that followed those proofs built the current production web and mobile apps. I mentored that team and wrote its foundational docs.

Do you work remotely?

Yes. I live in Fort Lauderdale, Florida, and I've worked remotely for Hive Tech since 2021.

Is the scheduler demo the real engine?

No. It is a simplified illustration of the scheduling problem, not the production engine. It runs on synthetic data: a sample city and made-up riders. No real rider or company data is in it.

How were the dollar figures worked out?

Figures marked "Estimated by Ryan" are my own estimates. The empty-mile savings use planned figures at the owner's prices. The 11-day test compares the scheduler's plans with the team's own plans.

Do you take freelance projects?

Yes. I build websites, software, mobile apps and automation for small businesses, and I do SEO. Email me a few lines about the project.

What's the best way to reach you about a role?

Email or LinkedIn. My resume is linked at the top of the page.

Contact

Let's talk

Email is the fastest way to reach me. My resume and LinkedIn are linked here too.

[email protected] LinkedIn Resume (PDF)

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