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In fintech, trust is everything - and speed matters just as much.

Fintech & Payment Systems Built for Speed, Security, and Scale

At QOLOS, we develop secure, high-performance financial applications and payment systems that handle complex transactions with ease. Whether you're building a platform, automating workflows, or integrating with payment gateways, we deliver the infrastructure to power your financial operations.

Next Steps...

01
Schedule Meeting
02
Free Consultation
03
Receive Estimate

Build Financial Systems That People Trust and Teams Rely On.

Let’s create fintech tools that are as powerful as they are secure. Let's Chat!

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Fintech & Payment Systems Built for Speed, Security, and Scale

In fintech, trust is everything—and speed matters just as much. At QOLOS, we develop secure, high-performance financial applications and payment systems that handle complex transactions with ease. Whether you're building a platform, automating workflows, or integrating with payment gateways, we deliver the infrastructure to power your financial operations.

What We Build

  • Custom Payment Platforms – Build and manage your own payment flow with secure, PCI-compliant systems.

  • Financial Dashboards – Real-time reporting, analytics, and account management tools.

  • Automated Billing & Invoicing – Custom workflows for recurring billing, reconciliation, and transaction logging.

  • Gateway Integrations – Stripe, PayPal, Authorize.net, Plaid, and more—fully integrated into your systems.

Why QOLOS?

  • Security-First Development – We bake compliance, encryption, and audit trails into every build.

  • Custom Logic, No Compromises – Your business rules, your integrations, your user experience—exactly how you need it.

  • Scalable Architecture – Ready for high volumes, multi-user access, and rapid growth.


Build Financial Systems That People Trust and Teams Rely On.
Let’s create fintech tools that are as powerful as they are secure.

Chad VanCalster

Meet the Expert

We build custom payment systems and fintech platforms that are fast, secure, and built around how your business actually works. Whether it’s real-time payments, billing automation, or integrating with gateways like Stripe or Plaid, we make sure your financial tech is solid and scalable. 

- Chad VanCalster
Contact Chad
Chad VanCalster

Contact Chad VanCalster

Thank You! Your contact information and message has been sent to Chad.

QOLOS is everything you need to build your DREAM TEAM!

We hire the best, and that is why we are the best. You won't be disappointed.

Always excellent and a high attention to detail. Highly recommended!

Dr. Jason GospodarekGreen Bay Eye Care

I have worked with the team at QOLOS for years and they have always provided me with a quick and expert response. I highly recommend them for your website needs.

Jason BahamundiTravel Host


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QOLOS, Inc.

340 N. Broadway St. STE 200

Green Bay, WI 54303

(888) 747-7111

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