Banking software development to future-proof your financial institution

Q: What is banking software development?

Banking software development involves designing, building, modernizing, and maintaining digital products and platforms for banks, financial institutions, and fintech companies. This can include mobile and web banking applications, payment solutions, lending platforms, digital wallets, and software that connects modern digital experiences with existing banking systems.

Q: How do you ensure banking software is secure?

Security is built into the development process from the start, not added as a final step. This includes security-conscious architecture decisions, secure coding practices, code reviews, penetration testing, and QA that covers both functional and security requirements. The approach is adapted to the sensitivity of the data and systems involved, and to the regulatory environment the software operates in.

Q: Can you build banking software that meets regulatory and compliance requirements?

Yes. Banking software operates in a regulated environment, and compliance requirements vary by product type, market, and institution. We account for relevant regulations during the design and development process, including data protection, security standards, and financial services-specific requirements. We work with your compliance and legal teams to ensure the software aligns with the applicable requirements for your product and target markets.

Q: Can AI and machine learning be integrated into banking software?

Yes. AI and machine learning can be integrated where they add real value — from fraud detection, credit scoring, and financial data analysis to personalisation, process automation, and intelligent decision support. We assess the specific use case against security, data protection, regulatory, and reliability requirements before integrating AI into banking software.

Build secure, scalable digital banking products with banking software development solutions that meet evolving customer expectations and business needs.

Keep up with the demands of modern banking

Your financial institution has to balance customer needs with complex technology, security, and regulatory requirements. However, legacy systems often make it harder to introduce new digital services or respond quickly to market changes.

Infinum helps banks and financial institutions design, build, and modernize digital products that are secure, scalable, and easier to evolve. From mobile banking and payments to lending and fintech platforms, our banking software development solutions are tailored to your business needs and existing technology ecosystem.

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The challenges shaping modern banking

Modern finance companies face pressure from several directions. You must deliver better digital experiences while managing and reacting to ever-changing technology environments. Your banking software must also support daily operations without blocking future development.

Legacy systems can slow innovation

Many banks still rely on core systems and legacy applications. These systems support critical operations but can be difficult to extend or integrate with newer technologies. This makes it harder to launch new digital products, connect services across the organization, or respond quickly to changing business and customer needs.

Customers expect better digital experiences

Customers expect banking to be as convenient and intuitive as the other digital services they use daily. This means fast financial transactions, intuitive use, instant notifications, easy account opening, personalized services, and 24/7 access. Meeting these baseline expectations is necessary to remain competitive and aligned with customer needs.

Complex technology landscapes make change harder

Modern banking rarely depends on a single system. Core banking platforms, mobile and web applications, payment services, third-party providers, and internal systems must work together effectively. As these environments grow, maintaining consistent experiences and reliable integrations becomes harder, especially when introducing new products or services.

Financial data keeps growing

Your financial institution manages vast amounts of transactional, customer, and operational data across systems. Modern software architectures help you process, integrate, and use this data efficiently while supporting growing numbers of users, transactions, and digital services.

Security and compliance shouldn’t be afterthoughts

Financial products handle sensitive customer information and high-value transactions, making security and compliance essential throughout the technology lifecycle. You must meet requirements for authentication, authorization, data protection, monitoring, auditability, and regulatory compliance while delivering these digital services.

Our banking software development services

We work with you to understand your exact requirements and develop software that meets customer needs and expectations. Our services include banking software development solutions designed for banks, fintech companies, and other financial organizations.

Digital banking applications

Create mobile and web banking experiences that make everyday financial tasks faster and easier to complete for your customers. Infinum helps you turn complex banking processes into an intuitive experience, from account opening and transaction management to payments and notifications.

We combine product strategy, UX/UI design, engineering, analytics, and QA to create digital banking experiences that work across channels and fit into your existing technology ecosystem.

Banking modernization

Modernization doesn’t have to mean a high-risk replacement of your core systems. We help you introduce new capabilities around existing technology, using APIs, modular services, cloud infrastructure, and modern applications to gradually reduce technical constraints.

You get a more flexible technology environment that supports new products and customer experiences without forcing you to start from scratch.

Payment solutions

Develop reliable payment experiences that align with the way your customers and business operate. Infinum builds financial solutions that support payment workflows, including instant and SEPA payments, and integrates them with existing financial infrastructure.

From customer-facing payment journeys to the underlying integrations that support them, we focus on reliable transaction flows, clear user experiences, and the technical requirements of your payment ecosystem.

Lending software

Make it easier for customers to apply for and manage loans while reducing friction across the process. We develop lending software that connects applications, workflows, data sources, and decision-making processes across digital channels.

Whether you’re improving an existing lending journey or building a new digital loan product, we turn complex financial processes into simpler customer experiences and more efficient internal workflows.

Fintech platforms and digital wallets

Turn new financial ideas into products that can grow with your business. Infinum builds digital wallets, payment platforms, and other custom fintech solutions around specific business models, customer needs, and regulatory environments.

We combine product strategy, design, engineering, and technology expertise to take financial products from concept to launch. Our team also supports the evolution of these products as your users, features, and business requirements grow.

Cloud-based financial software

Cloud technology gives you the flexibility to scale digital products, integrate services, and manage growing workloads. Infinum develops secure, cloud-based solutions focused on reliability, data protection, and performance.

Whether you require digital wallets and payment platforms or full-scale banking applications, we design cloud architectures around your exact product requirements and long-term goals.

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Harness AI and data to build smarter financial products

Data analytics helps you understand customer behavior, identify operational patterns, measure performance, and uncover opportunities to improve your products and services. We then help you turn that data into useful insights that support better business decisions.

AI and machine learning can take this further by automating processes, personalizing digital experiences, and powering intelligent workflows. From personalized online banking experiences to automated processes and data-driven services, we integrate AI where it can create meaningful value for your customers and business.

We focus on practical applications, identifying where AI or data analytics can measurably improve your product and building those capabilities into your software with security, data protection, and compliance requirements in mind.

A security-first approach to banking software

Financial software needs to protect sensitive data, support secure transactions, and meet the security and compliance requirements of the markets it operates in. That’s why security needs to be considered throughout the development lifecycle.

At Infinum, security is part of how we build, not a final check. We apply secure development practices across the lifecycle, from threat modelling and secure architecture to vulnerability scanning and secrets management. As an ISO-27001-certified company, we follow recognised standards for information security and data protection. Through AMR CyberSecurity, part of Infinum, our CREST-accredited specialists provide penetration testing, security consulting and training, helping financial institutions find vulnerabilities early and meet regulatory requirements such as DORA and NIS2.

This approach is especially important when developing systems that manage customer accounts, payments, financial transactions, authentication, and other sensitive banking services.

From strategy to scalable banking software

We deliver end-to-end development support, combining frontend and backend solutions with the other technologies needed to make your banking software successful.

01 Discovery & strategy

Understand your business goals, customers, existing technology, and product requirements.

02 UX/UI design

Turn complex financial processes into clear, intuitive customer experiences.

03 Architecture & development

Design and build secure, scalable software around your requirements and existing ecosystem.

04 Testing & QA

Validate functionality, performance, security, and reliability throughout development.

05 Deployment

Launch the product with the infrastructure and support needed for a smooth transition.

06 Continuous improvement

Maintain, optimize, and evolve the software as customer and business requirements change.

Future-proof banking in action: RBA

The challenge

RBA wanted to transform its mobile banking experience while reducing dependence on legacy technology.

The solution

Infinum combined strategy, UX/UI design, iOS and Android development, analytics, and QA to build a new mobile banking app. The team also developed a modular microservices-based architecture designed to make it easier to introduce new features.

The result

The new platform supports digital banking services including account opening, payments, transaction management, expense tracking, and loan applications, while its modular architecture gives RBA greater flexibility to continue evolving the product.

Read the full case study

Why choose Infinum for banking software development?

20+ years of software expertise

Infinum has 20+ years in business, 400+ employees/contractors, and 1,000+ successful projects.

15+ years in fintech and banking

We have been building specialized solutions for banks, insurance companies, and fintech startups for 15+ years.

End-to-end product development

Infinum provides strategy, UX/UI, engineering, QA, DevOps, cybersecurity, AI, and ongoing support under one partner.

Proven financial-sector experience

Our success with RBA, Croatian Postal Bank, Mara, and other financial-sector projects demonstrates our expertise in banking software development.

Build banking software ready for what’s next

We understand banking industry requirements and the technology challenges modern financial organizations face. Whether you’re modernizing legacy technology, launching a new digital banking product, or exploring what’s possible with AI, Infinum helps you turn your financial technology goals into secure, scalable software.

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FAQs

Frequently asked questions about our banking software development services.

What is banking software development?

How can banking software development help modernize legacy systems?

Modernization doesn’t always require replacing a legacy core banking system. A more gradual approach can introduce APIs, modular services, cloud infrastructure, and new digital applications around existing technology. This helps you improve customer experiences and add new capabilities while reducing the risk of disruption caused by unnecessary large-scale system replacements.

How do you integrate new banking software with existing systems?

We start by understanding your existing technology ecosystem, including core banking systems, APIs, databases, payment infrastructure, third-party services, and other dependencies. We then design an architecture and integration approach that allows new software to work reliably with the systems you already use while creating flexibility for future development.

This approach supports online banking services, payment systems, banking portals, mobile applications, and other financial products.

How do you ensure banking software is secure?

We consider security throughout the entire software development lifecycle. Depending on the product and requirements, this includes secure authentication and authorization, encryption and data protection, secure API design, monitoring, vulnerability testing, and security-focused QA. We also consider the regulatory and security requirements relevant to the markets and financial products involved.

Can you build banking software that meets regulatory and compliance requirements?

Yes, we build to support the requirements of your market and product. We account for these requirements during discovery, architecture, design, development, and testing so compliance is built into the product from the start rather than addressed only before launch.

This is especially important if your financial organization operates across markets and the global financial ecosystem.

Can you develop cloud-based software for banks and financial institutions?

Can you develop a banking application from scratch?

Can you help with both mobile and web banking applications?

Yes. We develop digital banking experiences across mobile and web platforms. Depending on the project, this can include features such as digital account opening, transaction management, payment authorization, notifications, expense tracking, and other customer-facing banking services.

Our experience with mobile banking apps and online banking helps you deliver consistent digital experiences across channels while supporting customer satisfaction and business goals.

Can AI and machine learning be integrated into banking software?

Yes. We integrate AI and machine learning into financial products where they provide meaningful business or customer value. Potential applications include data analysis, automation, personalization, and intelligent workflows.

Through data analytics and AI, you gain deeper insights into your customers and operations while creating more relevant digital experiences. We focus on practical use cases and consider security, data protection, reliability, and the existing technology ecosystem when introducing AI.

How long does it take to develop banking software?

The timeline depends on the product’s scope, complexity, integrations, regulatory requirements, and starting point. For example, a new digital banking product may require significantly more work than adding a specific capability to an existing platform.

During discovery, we define your requirements and technical constraints, and create a realistic development roadmap for your solutions.

What does the banking software development process look like?

Why should a financial institution work with a specialized banking software development partner?

Financial software combines complex business processes with demanding requirements around security, reliability, scalability, and compliance. A partner with banking and fintech experience can help navigate these constraints while applying modern product development practices. Infinum combines financial-sector experience with strategy, design, engineering, QA, DevOps, cybersecurity, and AI expertise.