Fintech

We build mobile banking apps, stock trading platforms, and payment solutions for banks, payment providers, and financial institutions. Every product we deliver is built around the compliance requirements and security standards the industry demands.

What we do

Improve your
existing solutions

Your financial software that isn’t keeping up? We can extend its functionality, improve performance, or integrate it with other platforms and services. Whether it’s adding PSD2 and Strong customer authentication (SCA) support, tightening security, adding AI-powered fraud detection, or connecting your banking app to third-party data providers, we’ll build on what’s already working without starting over.


Create a custom
system from scratch

We design and build fintech software from the ground up, tailored to your business model, your users, and the regulatory environment you operate in. Whether it’s a mobile banking app, a stock trading platform, or a payment solution, we’ll build it to the compliance and security standards your industry requires.

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Covering the full range of fintech development

Mobile banking apps

Mobile banking apps

You can rely on us to build a bespoke mobile banking solution with a mobile wallet, mobile security token and currency exchange, along with card, receipts and payments management, as well as PSD2 and Strong customer authentication (SCA) support.

Stock Trading apps v2

Stock trading apps

If you want a new stock trading app like Robinhood or eToro, we can help you develop next-generation tech, adding social capabilities if you need them.

Mobile Payment solutions

Mobile payment solutions

We’ve helped build point of sale apps, tools that track everything from sales and taxes to top-purchasing customers, and even fiscalization modules for European apps.

Stock Trading apps v2

Wealth and asset management platforms

We build custom platforms for wealth management firms that need more than off-the-shelf software. Portfolio tracking, compliance logging, document management, and client portals all in one system, built around how you actually work.

“We helped one of our international clients in the fintech industry comply with the EU’s revised Payment Services Directive (PSD2), ensuring highly secure online and mobile payments alongside far better consumer protection.”
Mario Zderic
Co-founder and CTO

Important features:

  • PSD2 and Strong customer authentication (SCA)
  • Mobile wallet and payments
  • Receipts and transaction management
  • Know your customer (KYC)
  • Blockchain and crypto asset support
  • Near field communications (NFC)
  • Built-in regulatory compliance

Ivan Glazer, Business Line Manager at ASEE, shares his experience working with DECODE on a mobile banking app project.

Our fintech projects

Still unsure about something?

Don’t worry, whatever it is, we’ve got you covered in our FAQ.

At DECODE, we build custom software tailored to your business needs. This includes:

  • Enterprise platforms – Scalable systems built for complex operations and high user volumes.
  • Consumer-facing apps – Web and mobile products designed for usability and engagement.
  • Digital transformation solutions – Modernizing legacy processes with IoT, automation, and smart integrations.
  • Rapid prototyping & MVPs – Turning ideas into testable, launch-ready products quickly.

Every product we build is designed with scalability, maintainability, and long-term growth in mind, ensuring it continues to deliver value as your business grows.

DECODE has been delivering enterprise-grade software since 2012. A few examples include:

Our track record proves we can handle scale, complexity, and long-term partnerships.

Our engineers have deep experience tackling some of the most complex challenges across niche industries. Examples include:

  • Disconnected global communication: Building a chat app for crew members traveling across the globe without reliable internet.
  • Financial systems: Developing complex payment systems for large banks.
  • Industrial / logistics: Implementing unique business logic for a $12B company.
  • IoT & connected devices: Designing scalable solutions that connect physical devices with digital platforms.

This expertise means we can quickly step into niche industries and add value from day one, combining technical skill with strategic insight to solve even the toughest problems.

We work across the full spectrum of software development, from native mobile apps and cross-platform solutions to web applications, backend systems, and complex integrations.

We’re at our best on projects where our senior expertise can make a strategic difference.

  • Enterprise collaboration: We often integrate with large in-house engineering teams to accelerate delivery and bring niche expertise. For example, we partnered with a US $12B company, joining a 200-engineer team with a small team of 10 high-quality experts, solving complex engineering challenges at scale.
  • Greenfield projects: We also work with experienced founders to build products from discovery to launch. In these cases, we guide product strategy, design, and architecture while delivering high-quality, scalable code.

In short: Whether we’re strengthening an enterprise engineering team or building a product from scratch, we focus on projects where our expertise makes the biggest difference.

We start by analyzing your current workflows and identifying what slows your team down down. Then we design and build a custom software solution that simplifies those workflows.

For example, we can automate reporting and approval processes, replace spreadsheets with tailored platforms, or connect separate systems into a single, more efficient setup.

The result is software that fits with your existing tools, reduces manual work, and helps you make faster, data-driven decisions.

In the spotlight
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Let’s introduce ourselves

Find out more about who we are and why we love what we do.

About us →

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Our modus operandi

Work with us and you get a highly skilled team devoted to you and your product.

How we work →