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Custom Software Development Services for FinTech

Software is changing the world of business and financial services. As an in-house team of FinTech industry experts, we develop personal finance apps, currency exchanges, payments platforms, banking software, blockchain solutions, and more. What type of financial application do you want to create?

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CrustLab provides complex solutions to businesses of all sizes. We are the authors of the biggest and the most popular B2B currency exchange platform.



You can always count on a team of talents obsessed with software development. They love challenges, and there is no shortage of those in the financial industry advising you on every step of the software development process.

Years in the game


We have gained the trust of our clients by implementing projects on time and within the planned budget. Find out why they strongly recommend our services and teams.

How we help

Find out the benefits of working with a dedicated team of FinTech software development experts. We help companies build secure, modern, and profitable financial apps thanks to automation, multi-cloud services, blockchain technology, and custom functionalities. Our software products will help you stand out from the competitors, compete even with the biggest brands on the market, and increase your income.

Security is the key to users’

Make sure that your software is secure. Securing users’ wallets and funds is crucial to gaining their trust and commitment. Our task is to ensure the security of transactions, currency exchanges, and your app users’ documents & personal data through compliance with regulatory requirements such as CIS, NIST, and SOX. Furthermore, we believe that as a standard, every FinTech app should be highly stable restrict access to sensitive infrastructure and external entities integrated with the app. Having all the critical security and stability factors in mind, we use solutions like Open Policy Agent policies, Kubernetes Secrets, SSL certificates, and Cloud Firewall Automation, just to enumerate a few.

Improve data processing

Data is the gold of our times. We have experience building data warehouses containing all the credit reports, transaction history, stock prices, and other vital elements. We start by planning the entire data flow between all the systems that should be integrated within the app and create an architecture and API of a real-time data processing system. According to the best data analysis practice, our software products are usually equipped with smoothly designed data visualization tools and design patterns. This approach improves visibility quality, limits human error factors, and reduces operational risk and OPEX costs.

Multiple customization

Our knowledge and experience will help you offer a unique customer experience, increase users’ engagement and increase profits. We will focus on customization to achieve those goals from the very beginning. We are starting from the tailor-made architecture open to changes and required customizations through modern and flexible integration solutions, different types of payments, multiple widget customization options, and custom functionalities.

Custom software development for FinTech

You will find several services for FinTech, currency exchange, personal finance, and blockchain solutions in our offer. We can create any financial web application or native mobile payment application from scratch or take over the development of your existing product. Choose our team when you need a White Label financial software for your customers, integration with currency exchange feeds, back-office development, currency exchange platform extensions, trading software, or modernization services. Working with us, you work with the latest technologies.

FinTech software development

  • Custom Web & Mobile Apps Development
  • Online banking systems development
  • Virtual wallets development
  • Investing & trading platforms
  • Online currency exchange office
  • Blockchain solutions
  • FinTech software integrations
  • Payment services
  • Personal finance applications
  • Back office services development

Financial platform development & extension services

  • Banking API Integrations
  • Big Data Solutions
  • Multi-Cloud Banking Solutions
  • Digital Wallets
  • Payments Management Systems
  • PSD2 Standards Implementations
  • Polish API Implementations
  • Virtual Assistants


  • API Management
  • Banks’ APIs Integrations
  • BLIK Integration
  • Payment Providers Integration
  • External Systems Integration
  • Assets Integration


  • Non-banking Payments
  • Fiat Currencies Payments
  • Crypto Currencies Payments
  • POS Terminal Payments
  • Stripe Payments
  • Mobile Payments
  • NFC HCE Payments for Android
  • Google Pay Payments
  • Apple Wallet Payments

Contact us and get a free project estimation!

Let’s talk

Our IT expertise
in FinTech

We offer full-stack development services, like integrations with external data providers, mobile applications development, design, testing, and maintenance. When your company needs digital transformation, we modernize your application to the cloud, take care of development and operation, or help you create an Omnichannel Customer Experience. You can also count on our strategy, work methodology, and technology selection advice.

Full-stack development from scratch

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Integration Services

We can design an explicit data structure and communication protocols to integrate external Banks’ APIs such as PKO BP API, Santander Bank API, mBank API, etc. We recommend implementing an integration layer in microservices or serverless architecture for security and operational efficiency.

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Mobile App Development Services

Our mobile development expert will guide you through the entire process of FinTech software development. Having years of experience, counting on the newest technologies, and having industry knowledge, we build native and cross-platform mobile apps for Android and iOS operating systems.

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QA and Testing Services

The Quality Assurance & Testing service is an integral part of every project we conduct. By testing, we can build better products and cut costs and minimize the risk of failure of the software development process.

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Design Services

Already at the planning stage, we will help you design the best possible version of your product during the Product Workshops. Our specialists will guide you through the entire design process, from strategy, through mockups, to a fully interactive and clickable prototype.

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DevOps Services

The DevOps team supports the entire software life cycle. Using appropriate tools, they optimize processes through automation, which helps to increase the speed and quality of software development and facilitate the whole process.

Improvements to the existing

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Omni-Channel Customer Experience

Being present in multiple channels will increase user satisfaction and attract more users. In addition, thanks to many years of experience in creating software for the web, mobile, standalone terminals, custom IoT devices, we will ensure that your product is available and equally good regardless of the device or operating system.

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Agile Transformation Services

Times and the market require changes from business and the ability to adapt to new conditions. That is why we will help you transform your company into an Agile-driven organization to make it more flexible and more technologically effective.

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Omni-channel Digital Strategy Services

Being present in many channels requires preparing an appropriate product strategy and diversified marketing activities. Thanks to business analysis, we will help you better understand the needs, especially from the technical perspective, refine the product and create a multi-channel digital strategy for your digital product.


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Application Maintenance Services

When your mobile application needs modernization, our team of mobile experts is at your service. We create native or cross-platform mobile applications from scratch or improve the source code of existing products by modernizing them. You can count on us to refresh the design, add new functionalities or develop the application on new platforms.

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Cloud Application Modernization

Moving the product to the cloud will provide you with greater security, speed of operation, and stable product functioning. In addition, it will save time and money to focus on the development of your business.

Development speed-up

Hire an experienced team of FinTech development experts to ensure the success of your digital product development. Cooperation with us is possible in various models. We offer staff augmentation of the entire, dedicated teams with PM, Designers, Developers, and testers or the expansion of your internal IT department with individual specialists. Increase the project team immediately to accelerate development thanks to cooperation with professionals experienced in FinTech software development.

Let’s talk

Trusted by leading brands

There is no better recommendation than the opinion of a satisfied customer. See what founders and managers say about cooperation with CrustLab.

Schedule a free expert session
with the CEO of CrustLab

Hi, I’m Adam – the CEO of CrustLab

I would love to share my experience and know-how with you and talk about your challenges! Feel free to reach out to me to discuss your ideas and needs for any project.

Hi, I’m Adam – the CEO of CrustLab

I would love to share my experience and know-how with you and talk about your challenges! Feel free to reach out to me to discuss your ideas and needs for any project.

They trusted us
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    Frequently Asked Questions

    In this section, we have collected questions that are repeated during conversations with you, our customers, and using these questions, we have explained some key terms that may raise doubts. We hope you find the information below helpful. If you have any questions, please write to us!

    • What Is Financial Technology (FinTech)?

      Financial technology, or fintech, is a term used to describe the new technologies and innovation that are being used by (most often) financial institutions to solve financial problems. These digital solutions can include anything from mobile payments and digital currencies to cloud-based accounting software, just to name a few fintech solutions.

    • How do FinTech companies generate money?

      Usually, useful fintech solutions make money by charging fees for their services, such as transaction fees or subscription fees. Some fintech startups may also choose to generate revenue through advertising or by selling customer data.

    • How do financial technology software development firms charge for their services?

      The payment process for fintech software development services can vary depending on the project or types of fintech software developed. Typically, an upfront deposit is paid to get started, followed by milestone-based payments throughout the software development process. Once the final product is delivered and approved, a final payment is made.

    • How are fintech software developers keeping up with the newest technologies?

      Fintech product development needs to be agile to meet the quickly-changing demands of the financial sector. Our team of developers continuously keeps up with the latest trends, whether that’s through online research, attending relevant conferences, or taking part in hackathons. This way we can ensure that our clients always have access to the best and most innovative fintech solutions on the market

    • How will fintech software keep data safe and secure?

      Fintech software is often developed with security in mind from the very beginning. This means that various security measures, such as data encryption, are built into the fintech software itself. In addition to this, insurance companies usually have strict policies and procedures in place to protect customer data both internally and externally. And when it comes to payment solutions, the leading fintech companies are always up-to-date with the latest PCI compliance standards.

    • How will fintech software help my company and my employees work smarter?

      With fintech software solutions,  your company will be able to work smarter, not harder. Automation is one of the main advantages of using fintech management software, which can help to free up your employees’ time so that they can focus on more important tasks. In addition, fintech solutions can help to improve communication and collaboration within your company, as well as with customers and clients.

    • What technologies are used in fintech development?

      It all comes down to the specific fintech solution that’s being developed. Some of the most popular technologies used in fintech software development include cloud-based solutions, big data analytics, artificial intelligence, and blockchain. And no matter whether you want to develop loan software or another type of investment software, you need to keep an eye on both web and mobile technologies, as well as analytics.

    • Which businesses need fintech software development services?

      And here’s the thing –  fintech software isn’t just for big businesses or financial institutions. Any business that wants to stay ahead of the competition and offer their customers a better experience or professional financial advice can benefit from fintech payment solutions or complex mobile banking software.

      When looking for best fintech software development companies, make sure your fintech product development team has experience  in developing the type of solution you need. Also, take a look at their portfolio to see if they have delivered any similar projects (e.g. investment software) in the past. And finally, don’t forget to check out online reviews to get an idea of what other companies think about working with them.