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Devplex

Available for new projects

Your vision.
Engineered end to end.

Devplex is a full-stack engineering studio building production software that moves real money — with one engineer accountable for every layer of it.

Start a projectSee the work

$2M+

Moved & paid out

15,000+

Users served

33+

Clients shipped for

10+

Years building

Selected work

Products shipped, not prototypes

Every project below went to production and served real users. Filter by what a product does, or open any case study for the build detail.

Showing 27 projects.

Crush live map showing nearby profiles
SocialFull-stack

Crush — read the case study

Live-map dating app built around who is actually nearby, right now

  • Next.js
  • React
  • TypeScript
  • +3
Case study
SFL fantasy sports interface showing weekly matchups and league standings
Games & ChanceFull-stack

SFL — read the case study

Last-person-standing fantasy sports league with cross-chain minting

  • Next.js
  • React
  • TypeScript
  • +3
Case study
Aire landing page hero section for a cryptocurrency item shop
Marketing SitesFrontend

Aire — read the case study

Marketing landing page for a cryptocurrency item shop

  • React
  • TypeScript
  • Tailwind CSS
  • +1
Case study

Capabilities

One engineer, the whole stack

No hand-offs between a front-end person and a back-end person, and no gap where the two were supposed to meet.

Product engineering

Whole applications, not slices of them. Schema design, API surface, and interface built together so the seams stay in the right places.

Interface design & build

Design systems and interfaces that survive contact with real content — accessible, responsive, and consistent across every state.

Blockchain integration

Wallet auth, token and NFT mechanics, and on-chain settlement wired into products people can actually use without reading a whitepaper.

Payments & transaction security

Catalog, cart, checkout, and fulfilment — plus the part that matters: every signed payload verified instruction by instruction against server-side rules before funds move.

Performance

Fast first paint, honest bundle budgets, and image and data strategies chosen for the page rather than copied from a template.

Reliability

Typed end to end, idempotent where it counts, and instrumented enough that a failure tells you what broke instead of that something did.

Day-to-day toolkit

  • TypeScript
  • React
  • Next.js
  • Node.js
  • Tailwind CSS
  • PostgreSQL
  • Prisma
  • GraphQL
  • REST
  • WebSockets
  • Solana
  • Ethereum
  • Solidity
  • Rust
  • AWS
  • Vercel
  • Docker
  • Git

About

Ten years of shipping other people’s ideas

Almost everything here I build myself — data model, API, and the interface people actually touch. On larger builds I lead three contract engineers I have worked with for years, but the person you brief stays the person accountable for what ships. Over the last decade that has meant commerce platforms, real-time multiplayer systems, and blockchain-integrated products delivered across 33+ clients.

Most of that work moves money, which changes how it has to be built. Backend services construct every financial transaction and then verify the user-signed payload instruction by instruction against database-defined rules — signers, fees, recipients — so tampering, replay attacks, and race conditions are caught before funds move rather than reconciled afterwards.

I built the original site for Floki Inu, a top-100 cryptocurrency that peaked near a $2.7B market cap, on an emergency timeline. I was founding engineer at KnifeForkSpoon, an NFT gaming startup that raised around $300K. Today most of my work runs through GOTM Labz, where I own the full stack across staking platforms, launchpads, swap tools, and a trait marketplace.

Justin Okland

Founder & Full-Stack Engineer

How it runs

  1. 01

    Scope

    Work out what the product has to do before writing anything that assumes an answer.

  2. 02

    Model

    Design the data first. Most interface problems are a schema problem wearing a costume.

  3. 03

    Build

    Ship in working slices, so there is something real to react to well before launch.

  4. 04

    Hand over

    Documented, typed, and deployable by someone who was not in the room.

Contact

Have something that needs building?

Tell us what the product has to do and who it is for. You’ll get back scope, a plan, and an honest answer about whether Devplex is the right fit to build it.

or email directly