Fintech Development for Modern Markets

Delivering best-in-class apps and APIs for retail trading and investment management.

We build experiences that empower.

Our mission is to provide instant and engaging apps driven by lightning-fast APIs and architecture that drive customer adoption and inform better decisions.
"Mike has built a game-changing trading app that integrates everything our traders need in one place."

Justin Clark, iCoinPro

We build experiences that empower.

Our mission is to provide instant and engaging apps driven by lightning-fast APIs and architecture that drive customer adoption and inform better decisions.

Principal Harbor started as a code name for a cryptocurrency trading strategy built in 2017 by Mike Christensen, a 20-year veteran entrepreneur, engineer, and technical analyst currently working toward a CMT designation.

It has since evolved into a full service development company with services in:

Mobile, Web, and Progressive Web Apps

Custom Trading Portals for Specialized Strategies and Markets

Websocket and REST APIs

Custom Technical Indicators

Custom Trading Strategies

Market Research and Data

Automated Order Management

Capabilities: The Right Tools for the Job

Python
Django
Node.js
TypeScript
PHP
Pine Script
PostgreSQL
TimescaleDB
Redis
React
ExtJS