Web Applications / Toronto + Remote

Custom Web Application Development

Dashboards, customer portals and marketplaces built to handle real traffic — by a senior full-stack developer who worked on a platform with over two million sign-ups.

★★★★★ 5.0 / 23 verified reviews 40+ apps shipped 1.1M+ users in production

I reply to every inquiry within one business day.

Work featured in

2M+ User sign-ups on a production platform I helped build and maintain
1.1M+ Active users on production apps I deployed and maintained
7M+ Entries in the production database I helped maintain
40+ Production apps shipped

Sound
familiar?

What teams tell me before a web build.

01

“Your platform slows down or breaks when traffic spikes.”

Every launch or promotion turns into a fire drill.

02

“Your customers need a portal, and email plus spreadsheets isn’t cutting it.”

Customers want self-serve access, and your team wants its time back.

03

“You’re building a marketplace or SaaS and need it architected properly.”

Early shortcuts in data models and payments get expensive later.

04

“You’ve had too many handoffs between designers, developers and agencies.”

You need one person accountable for the whole stack.

Proven at
real scale.

Real-time, high-traffic platforms with full-stack ownership.

01

Production
at scale

As a senior full-stack developer on a high-traffic consumer platform, I built features, shipped deployments and maintained the live apps and production database.

2M+ sign-ups · 1.1M+ active users · 7M+ entries.

Low6 — DraftKings contest platform.

02

Travel
platform

As CTO of TravelSpoken, I built a full-stack travel platform spanning booking, social content, payments, integrations and AI-powered trip planning.

Technology contributed to a multi-million-dollar fundraise.

03

Operations
software

Custom operational software built around real business workflows, internal tooling and product-specific automation.

Helped position the company for acquisition by an industry leader.

Book my free strategy call

Want this for your platform? Book a free 30-minute strategy call. Or call 905 979 8389.

I reply to every inquiry within one business day.

Web apps
built to scale.

From internal dashboards to customer-facing platforms.

01

Dashboards

Real-time dashboards and reporting for operators and leadership.

02

Customer portals

Secure portals for accounts, orders, documents and self-serve support.

03

Marketplaces

Two-sided platforms with listings, payments, messaging and admin tools.

04

SaaS platforms

Multi-user web products with roles, billing and integrations.

You work with
the builder.

No agency handoff. Speak directly with the developer building your product.

Christopher Walsh, senior full-stack developer in Toronto

I own the whole stack — architecture, APIs, frontend, integrations and deployment — so one person is accountable for how the platform performs.

6 years across the full stack — mobile (iOS/Android), web, backend, cloud and AI — including deploying and maintaining production apps and databases for 1.1M+ active users. That means fewer handoffs, faster decisions and one person accountable for the result.

Clear from
day one.

Start with the business goal, define the right build, then move through launch without unnecessary complexity.

01

Strategy

Define the users, core workflows and what the first release needs to do.

02

Architecture

Design the data model, APIs and infrastructure for the traffic you expect.

03

Build

Ship working features in stages, with direct communication throughout.

04

Launch

Deploy to production, monitor performance and keep iterating.

$10K–$40K

Typical web application projects run $10K–$40K. The range depends on user roles, real-time requirements, payments and integrations. Starting with one core workflow gets a working platform live sooner and keeps the first phase focused.

Moves it up the range

  • Real-time features or high traffic
  • Payments, billing or marketplace logic
  • Many user roles and permissions
  • Multiple third-party integrations

Keeps it lean

  • One core workflow first
  • Standard login and payments
  • A phased feature rollout
  • Clear requirements up front
Book my free strategy call

Want a real estimate for your platform? Book a free 30-minute strategy call. Or call 905 979 8389.

I reply to every inquiry within one business day.

5.0 stars.
23 reviews.

Strong communication, fast execution and software delivered with care.

★★★★★
“Chris was amazing to work with. Honestly, do not go with anyone else. If you want your app built and delivered seamless and in less time than expected — Chris is your guy.”
Verified client review / Fiverr
★★★★★
“Exceptional mobile app skills, exceeding expectations with quick responsiveness throughout the project.”
Verified client review / Fiverr
★★★★★
“Top-tier knowledge. He turned ideas into a working product quickly and cleanly, and genuinely cared about getting it right.”
Verified client review / Fiverr

Straight
answers.

The questions people ask before booking a call.

How long does a typical project take?

It depends on scope and integrations. Most platforms launch with a focused first release, then grow in phases. You get a timeline after the strategy call, tied to a defined feature list.

How fast can we start?

Quickly. Book a strategy call and we can usually talk within a few days. If we’re a fit, you get a written scope and estimate shortly after, and work starts as soon as you approve it — no long sales process.

Can you build something that handles high traffic?

Yes. As a senior full-stack developer on a high-traffic consumer platform, I built features, shipped deployments and maintained the production apps and database through 2M+ sign-ups, 1.1M+ active users and 7M+ entries. The same architecture and performance thinking goes into every platform I build.

Can you take over an existing web app?

Often, yes. I start by reviewing the current code and architecture, then recommend whether to improve, refactor or rebuild specific parts.

Do I own the code?

Yes. You own the code and the repository, and accounts are set up in your name. You are never locked in to working with me.

How do we work together day to day?

You work directly with me — no account manager and no agency handoff. You get regular progress updates, working builds to review, and quick answers when decisions come up.

What if I only need a small feature, not a full platform?

That’s fine — not every project is a full build. A single feature, an integration, a fix or a review of existing code can be scoped and quoted on its own. The strategy call is free either way, so it costs nothing to ask.

Do you sign NDAs?

Yes. I’m happy to sign your NDA before you share details — send it over before or after booking. Your idea and information are kept confidential either way.

What does something like this cost?

Typical web application projects run $10K–$40K. Real-time features, payments, user roles and integrations are the biggest drivers. You get a clear estimate after the strategy call.

Have an idea?
Start here.

Spend 30 minutes walking through the platform you need. We’ll cover technical feasibility, the right architecture, feature priorities and a development roadmap.

01 / Technical feasibility

02 / Recommended architecture

03 / Feature priorities

04 / Development roadmap

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Call 905 979 8389 Email play3dinc@gmail.com

I reply to every inquiry within one business day.

Free 30-minute strategy call I reply to every inquiry within one business day.

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