Software development services for fintech and banking

No industry has benefited more from technology than financial services. The concept of a high street bank is now under existential threat. Heading into 2026, it’s possible to sign up to a bank, deposit a cheque, and even apply for a loan all without leaving your smartphone. And, the form-filling and ID check can take just minutes (though it may take longer to process).

It’s not just old features of banking which have changed, but new features being introduced thanks to Open Banking. There’s now a vast ecosystem of integrations and third parties that can read your banking activity to help produce spending reports, bookkeeping, and generally help you budget and apply for other products. Borrowing is more accurate as a result, meaning the ancient prejudice of credit scores is waning.

Underneath all this is software - and it’s not the big banks who are leading, but smaller fintechs who are weaponizing their own lightweight agility, free from vast legacy systems, to provide hyper-personalized products to consumers.

Custom software in financial evolution

Off-the-shelf software solutions are increasingly competent at meeting consumer needs, but often fail in serving modern financial institutions themselves. In the end, some legacy systems are often linger around, and custom solutions are needed to integrate and scale with them. Especially when the business model is unique.

For banks older than 2015, the challenge is often around core banking modernization. They still run on mainframes and codebases that are rigid, and struggle to launch products quickly. Some third-party APIs may not be usable right away. Custom development is precisely what overcomes this, so middleware layers (or a complete overhaul in the digital cores) help achieve modern functions that consumers expect. Things like accurate tracking information during a transaction, or mobile-first onboarding.

For fintech challengers, the focus is different of course. They might be building from scratch. It gives them the advantage of speed, but establishing trust becomes central. Custom software can focus on user experience design to get this trust from the outset. Ultimately, there needs to be a minimization of friction, be it during a loan application, opening a savings pot or investing money.

What’s driving these changes?

Artificial intelligence

At this point, credit scoring has an incredibly large and complex number of data points that it uses. Machine learning algorithms are then applied to it, so that risk assessment is more accurate. Implementing NLP and LLMs are allowing chatbots to handle much more complex customer service queries so that humans are just reserved for more high-value interactions. AI isn’t just about saving money, but improving risk assessment and fraud detection.

Blockchain

Development services are turning to private blockchains for cross-border payments, at least as an option for when it makes sense, and also for identity verification. These systems help create a "single source of truth", and contrary to belief, could help with auditing, compliance, reconciliation costs and general transparency.

Cloud computing and devops

Cloud-native financial software is now ubiquitous, in part for its scalability and low outlay costs. Microservices architectures help independent updates for different application parts (e.g., payment gateway vs. user profile). It ultimately facilitates DevOps practices for Continuous Integration and Deployment because update releases can be weekly, or even daily. For early-on iteration, this helps be take on board data insights and consumer feedback into development before it grows.

Specialized development partners

The demand for this software has unsurprisingly led to a rise in partners, particularly from abroad, where labor is skilled yet more affordable. Applicacorp is one such example from Latin America who is focused on growth services for digital banking. They are more aimed at older, medium-sized clients looking to modernize their legacy systems with some modern UI and stress test compliance standards like SOC 2 and PCI-DSS.

Applicacorp is often compared to ScienceSoft, a trusty veteran in the IT industry. It has a broad portfolio and an established brand from servicing banks and insurance software. Likewise, EPAM Systems is also often cited for its impressive global engineering scale. Because of this, it can handle hugely complex digital transformation projects for household-name financial firms. Smaller operations like Intellectsoft focus more on enterprise solutions and emerging technologies like blockchain.

Choosing the right development strategy

Selecting a development path comes down to a dance between cost, speed and control. Some smaller firms may offer you more time and control, but it can take time. Meanwhile, larger partners can often provide you with a large pool of talent very quickly, but this may come at a cost and control.

Of course, a hybrid model is appealing to many as it keeps their most sensitive core ledger technology in-house while partners can help with mobile app development and UI/UX design.

Banking has already moved from utility to product; now it’s about who can deliver the most user-friendly, convenient experience.