/ Industries

Banking & financial software development

Build agile banking software, automate complex financial workflows, and gain a competitive edge.

The modular architecture of our solutions allows them to easily adjust to shifting market regulations and increasing transaction volumes.

Review my current financial solutions

Win with finance software development that grows with you

Innovate faster with custom banking technology solutions. Your vision, our code — powering next-gen banking solutions.

Need financial technology that actually does the job? We build custom fintech software solutions that handle fraud prevention, compliance headaches, and endless spreadsheets, so you don’t have to. Whether you’re streamlining transactions, hardening security, or personalizing digital banking experiences, our approach is simple: build what works, automate what slows you down, and scale where it brings long-term ROI.

Review my current financial solutions

Software development for financial services

COAX’s skilled finance software developers design finance software for budgeting trackers, automated savings tools, and debt management systems that sync with real-world spending. These systems automatically reconcile transactions across banks, enforce customized budget rules, and accelerate debt payoff through behavioral nudges.

We build mobile payment apps, e-commerce checkout systems, and peer-to-peer transfer platforms that handle transactions securely in real-time. These solutions let businesses accept payments anywhere, send money instantly between users, and avoid fraud with built-in verification, keeping money moving smoothly without delays or security risks.

Our developers create advisor platforms, client portfolio dashboards, and automated rebalancing tools as part of our financial software development services. With these tools, advisors manage more accounts efficiently while giving investors self-service access to their holdings with performance tracking and no spreadsheets or manual updates needed.

We develop cash flow predictors, spending pattern analyzers, and risk scoring models that process raw transaction data into actionable insights. These tools forecast short-term liquidity gaps and quantify financial health metrics, giving your business or individual finances a great data-driven clarity without manual analysis.

With our fintech product development expertise, you get efficient, tailored underwriting engines, dynamic credit scoring models, and loan management systems. These platforms assess borrower risk, adjust credit limits based on real-time behavior, and handle collections, reducing default rates and approving more qualified applicants faster.

Our experts craft automated KYC/AML screening systems, transaction monitoring algorithms, and compliance report generators that validate identities and flag suspicious activity in real-time. This allows you to reduce manual review workload, prevent fraudulent transactions before completion, and maintain audit-ready records to satisfy financial regulators.

Banking software development

What we offer for custom fintech solutions

  • Discovery Phase

    We analyze your transaction flows, compliance requirements, and integration points to create a fintech software outsourcing roadmap that actually works. You’ll get a technical playbook detailing API specs, security protocols, and scalability thresholds, so your team knows exactly what’s being built and why.

  • UX audit

    We methodically examine every tap, swipe and hesitation in your financial app using granular session analytics and accessibility compliance checks to reveal the hidden pain points. Our report delivers specific, actionable fixes, like streamlining ID verification flows or repositioning critical CTAs, based on empirical user behavior data.

  • Fintech web development

    We engineer web platforms for financial workflows where fintech solution development meets real-world demands, with features like instant payment status updates, live fraud monitoring, and multi-institution account aggregation without page reloads. With us, you get performant web interfaces for complex financial operations without sacrificing speed or compliance.

  • Mobile design and development

    Our engineers develop financial apps where biometric logins and animated transaction confirmations make security feel effortless. You get native iOS/Android apps that handle sensitive operations like loan approvals or stock trades while staying compliant, offline-capable, and unexpectedly quick — even on older devices.

  • Quality assurance

    We simulate real-world financial chaos, like sudden rate fluctuations, simultaneous multi-device logins, and API throttling scenarios, to expose weaknesses before they impact customers. Our reports typically expose how failures could actually lose money, like decimal point errors in interest calculations or race conditions in high-frequency trading modules.

  • AI/ML integration

    Our approach to AI in software development in banking and finance focuses on what matters: algorithms that explain their decisions for compliance, prediction models that improve weekly, and chatbot resolvers that handle the most common inquiries without human help. The result? You get measurable improvements, like cutting false positives and catching more actual fraud.

  • Payment gateways

    Your gateway should work harder than you do, and we build systems that switch between processors when one goes down and instantly retry failed transactions without customers noticing. You get failure recovery that retries declined transactions across backup providers, plus real-time currency arbitration that picks the cheapest settlement path.

  • Regulatory compliance & risk mitigation

    Software development for finance should be iron-safe. We build fintech software that meets strict regulations (GDPR, PSD2, AML, SOC 2) from the start. Get automated compliance checks, real-time fraud alerts, and systems that adapt to new rules effortlessly. Stay secure and avoid costly fines with ironclad protection for every transaction.

Why choose COAX software development for finance?

  • All-in-one product development

    We handle everything from fintech product development to deployment, designing secure transaction flows, and optimizing performance so you don’t have to juggle multiple vendors. We stick with you beyond launch, adjusting features based on real user behavior and compliance updates, so your product stays sharp in a fast-moving market.

  • High-quality software with ongoing support

    Our developers build financial applications that don’t just launch strong but keep improving, with monitoring that catches issues before users do and support that explains fixes in plain terms. When you work with us, you get software that evolves with your needs, plus a team that answers when you call — no disappearing acts after deployment.

  • Innovative solutions

    As a fintech solutions development company, we create tools that solve real financial headaches, like AI-powered fraud detection that learns as scams evolve or APIs that connect legacy banking systems to modern apps. We deliver working answers: actual code that handles today’s financial demands and adapts for tomorrow’s expectations.

  • Flexibility and scalability

    We’re all about adapting to your changing needs. Need to add new features or comply with updated rules? We make adjustments painless, so your tech never becomes a bottleneck. We build financial systems that grow when you do, whether that's handling 10x more transactions or adding new payment methods without rebuilding from scratch.

  • Third-party integrations

    We specialize in custom banking software development that treats integrations as a feature. Whether you're adding fraud detection APIs, blockchain networks, or CRM platforms, we ensure they communicate flawlessly with your current setup. Instead of forcing you to change your existing stack, we build adapters that let new and old systems work together securely.

  • Focus on security and compliance

    Security isn't just a checklist item for us — we implement granular access controls, audit trails, and penetration testing to keep your financial data safe and regulators satisfied. Our team stays ahead of evolving threats and compliance rules, so you get peace of mind knowing your compliance posture strengthens automatically with every update.

Client feedback


I was most impressed by the quality of the end product.

While my ideas formed the basis for the work, they delivered a far more superior product than I imagined with greater flexibility and viability of features. They exceeded expectations so many times it got to the point I couldn't wait to see what they came up with next.

Dan Brooks

President, Krytter

COAX have delivered immense value to our business as our valued strategic development partner.

I implicitly trust the whole COAX team to do the right thing by location:live, and to have blunt and honest conversations with me when we are in the thick of delivery. COAX are the engine room and compass behind our market-leading tech.

Neil Winkworth

CTPO, Location Live

The solution created by COAX is better than I could have anticipated.

The app is simple to use, effective, well designed and never fails. Highlights of the COAX service are a clear, transparent specification with realistic cost estimate, project managers that are responsive, always helpful and communicate clearly, a strong technical team and a company that I can trust.

Phil Cushion

Founder, SiteSurvey Plus

I heavily relied on COAX for not only the development of my core product, but also assistance in all the other support infrastructure in hosting my product.

The team also went above and beyond their existing web development skillset by making effort to understand the domain specific (financial modelling) math and technicalities of my product.

Tim

Founder, Peercents

COAX’s team is second to none designing, developing, and deploying websites.

I was delighted by COAX attention to detail and ability to deliver such a complex project. I highly recommend COAX to anyone looking for a reliable and talented web development team.

Mason Blake

Co-founder and CTO, Ratio

In working with COAX, we found them to be highly professional.

We have continued our ongoing relationship and cooperation with COAX on this project thanks to the ongoing support they continue to offer us.

Ashley Greenfelder

Director, Re:Plan

Their highly responsive team had the technical know-how to seamlessly incorporate non-standard features.

Despite facing tight crucial deadlines, they worked tirelessly around the clock to deliver the project on time, even accommodating additional feature requests. We are immensely thankful for their hard work, which resulted in exceptional outcomes.

Ali Ghafour

CEO, 2020 Armor

Throughout the years, we have maintained a strong relationship based on mutual trust and respect.

From the start, we prioritized flexibility, particularly in terms of working within our monthly budget and delivering new features and functionalities every two weeks. Our communication with both the project manager and team members has been exceptional, and we have consistently received high-quality product delivery and support.

Andrew Macfarlane

Founder & CEO, Carezapp

You will not often find such an approach in the outsourcing development market.

From the first day, the COAX team established themselves as optimistic. After the guys spent a dozen hours sorting out our problems and never once talked about money, we realized that this team was ready to go the extra mile. We were finally convinced of the prospects for cooperation when the COAX CTO came to our British office in person with a detailed presentation of the renovation.

Richard Murray

CEO, Antique Ecommerce Marketplace

We liked the COAX team’s deep-diving approach and attention to detail.

Their incremental approach with feedback loops allowed us to see results from the early stages and ensured we stayed on the right track. But most importantly, we felt that they genuinely cared about our project. Doing their best to make it as perfect as possible, they were always there for us, on-site rather than online.

Mykola Bronitskyy

Co-founder, GrandBus

They always respond right away to any questions or requests that we have and contribute really good ideas.

The development work delivered by COAX has satisfied all project stakeholder requirements for the project and helped to streamline internal company processes for the client. Their team is communicative and helpful throughout the work, contributing ideas to make the product even better.

Peter Goian

General Manger, TRI

Our financial case studies

Get into finance software development with us

This phase digs into your current tech stack through dependency mapping and load testing to pinpoint exactly where custom financial software development can solve your specific operational gaps. Our team delivers a detailed technical report outlining integration points, compliance risks, and performance metrics, giving you a clear roadmap.

Our planning converts your business requirements into technical specifications: calculating server capacity, data encryption methods, and failover protocols for your transaction volumes. You get a step-by-step technical plan showing which systems need rebuilding, what APIs must connect, and where automation will save operational costs.

For fintech development outsourcing projects, we map user journeys through complex financial tasks, then design interfaces that make multi-step processes feel straightforward with progress trackers and auto-saved sessions. You'll get mockups with developer handoff specs and documents for every component.

Our financial application development process focuses on bulletproof functionality. We build mobile and web apps, as well as websites with clean, modular code, creating APIs that handle hundreds of transactions per second, implementing encryption for data in transit/at rest, and ensuring zero downtime during critical tax filing periods.

We simulate real-world financial issues like sudden rate fluctuations, simultaneous multi-device logins, and API throttling to expose weaknesses before they impact customers. Our QA engineers build automated test suites that validate security protocols under penetration attempts and edge cases like interrupted biometric authentication during transactions.

Our team monitors error logs and usage patterns to suggest improvements proactively. We keep your financial systems running smoothly, applying security patches right after vulnerabilities are disclosed, optimizing database performance as transaction volumes grow, and updating APIs to stay compatible with banking partners.

Frequently asked questions and answers

Banks and financial firms use specialized software like core banking systems (Temenos, Finacle), trading platforms (Bloomberg Terminal), risk tools (Moody's Analytics), and accounting systems (QuickBooks, SAP). They also rely on custom-built solutions for payments, fraud detection, and regulatory reporting.

Fintech app integration connects banking systems, payment processors, and financial data sources through APIs — a core part of software development for financial services that lets apps securely share transactions, user data, and real-time updates.

Accounting software development creates specialized tools that automate bookkeeping, tax calculations, and financial reporting, turning spreadsheets into secure, real-time systems that handle invoices, payroll, and compliance with precision.

Outsourcing fintech projects provides access to specialized expertise in financial industry software development, reducing costs while ensuring compliance and security standards are met. It also accelerates time-to-market by leveraging proven fintech frameworks and scalable solutions tailored to banking and payment systems.

Fintech security starts at the code level with rigorous protocols: we implement transaction signing, behavioral biometrics, and hardware-grade encryption that meet strict financial regulations. Our systems undergo continuous vulnerability scanning and threat simulations to maintain protection as attack methods evolve.

Want to know more?
Check our blog

eCommerce

Payment gateway integration guide: Payment APIs compared

October 24, 2024

Go to the blog post page

Company news

COAX is heading to Stockholm Fintech Week 2024

February 12, 2024

Go to the blog post page

All

Optimizing fintech innovation: navigating the discovery phase for digital financial products

December 1, 2023

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How can we help you?

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What we’ll do next?

  • 1

    Contact you within 24 hours

  • 2

    Clarify your expectations, business objectives, and project requirements

  • 3

    Develop and accept a proposal

  • 4

    After that, we can start our partnership

Drop us a line:

sales@coaxsoft.com

Main office

401 S Milwaukee Ave Wheeling, IL 60090, USA

+1 773-644-8871

Delivery center

72 Mazepy str., Ivano-Frankivsk 76018, Ukraine

099-746-6810