FinTech Software Development Services

We design, build, and modernize FinTech solutions – from payment processing systems to trading platforms and consumer banking apps.

FinTech Software Development Services

FinTech Software Development Services We Offer

We support FinTech startups, SMBs, and enterprises across the financial sector with full-cycle development services and cloud expertise. Our focus is to deliver scalable, high-performing, and secure software.

FinTech Software Development Consulting

FinTech Software Development Consulting

Strategic guidance on building modern and reliable FinTech products: from architecture blueprinting and tech stack selection to cloud environment setup and regulatory alignment.

Full-Cycle FinTech Application Development

Full-Cycle FinTech Application Development

End-to-end development for your future software which covers product design, backend architecture, frontend implementation, system integrations, and post-launch support.

Cloud Migration and Software Modernization for FinTech

Cloud Migration and Software Modernization

Replatforming legacy financial systems to the cloud to improve performance, security, and agility while ensuring zero disruption and full continuity of business operations.

FinTech MVP and PoC Development for FinTech

FinTech MVP and PoC Development

Expedited prototyping of core features to validate product-market fit, secure investment, or test technical feasibility before full-scale programming.

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Quality Assurance and Automation Testing

Strategically structured QA processes and frameworks to ensure reliability and seamless performance across all user flows and devices.

DevOps and Infrastructure Engineering for FinTech

DevOps and Infrastructure Engineering

CI/CD pipelines, infrastructure automation, and cloud-native deployment setups designed for the systems in financial environments.

Our Case Studies

Explore how our projects demonstrate a deep understanding of the FinTech landscape: building payment and trading platforms, automating KYC workflows, and modernizing legacy banking.

Discover how we delivered custom banking software development to enhance flexibility and scalability for a Fintech SaaS platform.
  • FinTech
  • Full-Cycle Development
  • USA
Discover how we developed a serverless solution capable of handling high volumes of data while staying cost-effective with cloud infrastructure.
  • Cloud Development
  • FinTech
  • UK
Achieving online banking application user growth, scaling the platform by 250 times while establishing robust security protocols.
  • AWS Managed Services
  • FinTech
  • USA
Discover how we improved the client's development capabilities and minimized Total Cost of Ownership during the creation of a mobile app.
  • FinTech
  • Full-Cycle Development
  • UK
What the Clients Say
Romexsoft successfully delivered the therapy system. Its overall functionalities provided the company an advantage over its competitors. The team exercised competence, meticulous approach to Agile development and responsiveness throughout the development phase. The success of the product speaks for itself. We are far ahead of our competition in terms of features, usability, and overall strategic direction.
Gennady Gandelman
CEO at Pragma-IT
Romexsoft has been a strategic and essential partner to Omnyfy's ability to realise our Cloud Vision. Romexsoft helped us in multiple strategic projects including IaaS automation, programmatic provisioning of complex multi-tiered infrastructure taxonomy to support Omnyfy's PaaS deployments. I highly recommend Romexsoft. They have been extremely professional, knowledgeable and responsive to our needs.
Fabian Rebeiro
CEO at Omnyfy
I cannot fault Romexsoft's service. They are experts on AWS and offer advice and support 24/7. They are always available to answer any queries and if we have a problem they will resolve in swiftly. They are also a great team of people and I enjoy our weekly meetings. Since Romexsoft have managed and maintained our infrastructure, problems with our system are very rare.
Kevin Lanzon
Engineering Manager at Healthera
We've been working with Romexsoft for nearly a year now; we engaged them to assist in the migration of multiple PWS microservices to AWS and continue to leverage their skills to operate and extend those environments. Their code skills are fantastic and their communications, best represented by the weekly standups, are exemplary. I cannot recommend them highly enough.
Jon Labrie
CTO at Greenfence
Gorgany is an outdoor company. Our customers were struggling with low speed of our website, Romexsoft successfully delivered smooth apps and data migration form OVH to AWS under a tight timeframe and within budget. We received positive feedback from our customers. Working with Romexsoft has been a great experience. It was big pleasure to work with professionals
Oleksandr Hlavatskyy
CIO at Gorgany
Romexsoft has built a skilled and proactive team for SavvyMoney, eager to propose new solutions and hire expertise when needed. They have very good developers. The Romexsoft team is fairly well versed in English, both written and spoken. We haven't had the same problem with them as with other vendors. It’s a pleasure to work with Romexsoft, and I would highly recommend them.
Bhavna Guglani
VP of Product at SavvyMoney
Our company's ability to deliver sophisticated cloud-based solutions for the healthcare industry would be compromised without Romexsoft's superbly skilled engineers. Whether it’s a complex development project or streamlining DevOps, we count on their expertise and are yet to see them skip a beat. As they have been for years of our relationship, they continue to provide the answers to our evolving needs.
Gennady Gandelman
CEO at Pragma-IT
Romexsoft's team is essential to the product's success. Not only have they kept development costs in check, but they've also managed to scale the solution substantially, onboarding a few key clients in the process. Their developers are equally personable and capable. We have found a team of devoted people who care about their clients and are very attentive to our needs.
Oren Liberman
Our experience working with Romexsoft's automation QA team has been extremely positive. What's equally impressive is their professionalism and ability to quickly grasp complex business logic. As a result, they've been able to efficiently identify consequential test cases, develop well-structured test scripts and implement them within a scalable framework that included integration with our CI/CD pipeline.
Gennady Gandelman
CEO at Pragma-IT
The system introduced by Romexsoft was significantly cheaper than the client's previous third-party alternative. The team was responsive, easy to work with, and facilitated direct calls for the project's progress. The team is very knowledgeable and quick to acquire answers if further research is required. They were very efficient in handing over the project upon completion. They are also proactive in recommending/identifying infrastructure problem spots and potential cost reductions.
Daniel O'Reilly
LearnCube LearnCube
We've been very pleased with the quality and reliability of the 24/7 Infrastructure Support. Romexsoft team has been consistently responsive, and it’s been reassuring knowing we can rely on them during both routine operations and urgent situations. The DevOps team in particular has shown strong technical expertise and a proactive attitude, which has made a noticeable impact on our operations.
Scott Montreuil
Head of DevOps Darwin CX

Why We Differ in FinTech Development

The teams we ensemble combines financial domain expertise with hands-on experience in cloud-native technologies to build software that performs reliably at any scale.

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Full-Lifecycle Ownership

We take full responsibility for delivery – ensuring consistent quality, proactive risk control, and full alignment with your business objectives.

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Compliance-Ready Engineering

Our solutions are designed with compliance in mind from day one. Whether it’s PCI DSS, GDPR, PSD2, or KYC/AML, we build software that passes audits.

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AWS-Certified Specialists

As an Advanced Tier Services Partner, we deliver scalable, high-performance infrastructure with built-in security, automation, and observability.

Schedule a Call with Our FinTech Software Development Experts

Learn how our FinTech software development services help launch secure, compliant, and high-performing financial products that meet real market needs.

Types of FinTech Software We Deliver

Whether you're validating a new idea with a proof of concept or modernizing IT infrastructure to support the growth of an existing application, we do engineering that align with functional and technical priorities.

Digital Banking Solutions

Development of online banking platforms with features like user onboarding, transaction management, and real-time account monitoring.

Payment Systems

Custom payment gateways, merchant dashboards, POS integrations, and APIs for real-time transaction processing, settlement, and reconciliation.

Trading Platforms

High-performance software for stocks, crypto, or FX with real-time data feeds, order routing, trade execution, and risk management.

Credit Platforms

End-to-end loan management systems, credit scoring tools, borrower dashboards, and integrations with external data providers.

Investment Management

AI-advisors, portfolio tracking apps, and automated investment platforms built with secure APIs, analytics, and reporting features.

InsurTech Solutions

Insurance platforms for policy management, claims processing, user engagement, and assessment, integrated with third-party data providers.

FinTech Development Frequently Asked Questions

What is FinTech software development?

FinTech software development is the process of designing, developing, and maintaining digital products for the financial services industry. The goal is to deliver secure, scalable, and user-friendly financial solutions that meet regulatory standards and evolving market demands.

This encompasses the development of mission-critical applications such as core banking systems, payment processing platforms, algorithmic trading engines, digital wallets, lending and credit scoring systems, and regulatory compliance tools.

When does outsourcing make sense for a FinTech project?

Outsourcing a FinTech project is effective when speed, cost-efficiency, and domain expertise are critical. It gives you access to experienced developers familiar with regulations, security standards, and scalable cloud architectures — without the overhead of building an in-house team.

This approach is especially useful for startups and SMBs aiming to launch or modernize products quickly. But larger organizations in the industry also gain value by outsourcing. Particularly when scaling product lines, entering new markets, or offloading development to focus internal teams on other strategic priorities. It also supports flexible resource allocation and faster innovation cycles.

How long does it take to develop a FinTech application or solution?

The development timeline depends on the type of application, feature complexity, required integrations, and regulatory demands. A basic MVP for a FinTech product typically takes 3 to 6 months. More advanced platforms like full-scale banking apps, payment processing systems, or trading engines may take 6 to 12 months or longer.

Key factors influencing the overall project lifecycle and thus timeline include:
- Scope and feature set;
- UI/UX complexity;
- Third-party integrations;
- Regulatory requirements;
- Team size and engagement model;
- Security audits and certification;
- Planning for post-launch support.

What compliance and security standards should FinTech software meet?

FinTech software must operate within a tightly regulated environment, which requires adherence to a wide range of compliance and security standards. These regulations vary by geography, business model, and financial product type, but the goal is consistent: to ensure data privacy, transaction integrity, and customer protection.

The compliance includes data privacy laws like GDPR and CCPA, payment security standards such as PCI DSS, and financial regulations covering KYC, AML, and PSD2. Systems must also ensure API security, support regular audits, and follow cloud security best practices, including encryption, access control, and continuous monitoring. Certifications like SOC 2 and ISO 27001 are often expected in enterprise.

Explore More

Explore the following resources to gain deeper insights into FinTech software development and discover how purpose-built applications can enhance scalability, security, and revenue growth across digital finance.

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