Payment routing optimization
Intelligent transaction routing to maximize approval rates, reduce fees, and improve overall payment performance.
Mobile & web payment solutions
Optimized payment experiences across web and mobile applications with consistent performance and security.
High-load & scalable payment architecture
Cloud-ready, fault-tolerant architectures designed to scale with increasing transaction volumes and business growth.
FinTech companies
FinTechs building or scaling payment products that require speed, security, and regulatory readiness.
Banks & financial institutions
Traditional and digital banks modernizing payment infrastructure or launching new digital payment services.
SaaS platforms & marketplaces
Platforms handling subscriptions, recurring payments, payouts, and multi-party transaction flows.
Discovery & strategy
We start by analyzing your business model, transaction flows, and technical needs to craft the right software development solution. Whether you’re building a payment gateway from scratch or upgrading an existing system, this phase ensures your architecture, user experience, and scaling strategy are fully aligned with your business goals.
API architecture
We design clean, flexible, and fully documented APIs that integrate seamlessly with your platform. Our APIs are developer-friendly, compatible with internal systems, and easily extendable for third-party integrations, ensuring future-proof payment gateway development services.
Agile development
Our skilled developers build and test a fully integrated solution, covering transaction logic, database setup, unit tests, dashboards, and UI components. Using agile sprints, we continuously deliver and validate features, integrating payment processors, fraud tools, and other essential systems.
Continuous support
Post-launch, we monitor performance and provide updates, bug fixes, and new features as your needs evolve. Our ongoing support keeps your payment system secure, efficient, and ready to scale with your business and market demands through continuous software development.
Our portfolio
Low-latency cryptocurrency analysis platform
Learn how Geniusee built a real-time crypto trading dashboard integrating 40+ exchanges with low-latency streaming and secure AWS infrastructure.
Case details
Anatomy Financial: Automated financial management software for healthcare
Anatomy introduces an innovative solution designed to automate document processing, compare various documents and banking transactions, and handle the intricacies of physical check processing. By conducting a thorough analysis, the system identifies discrepancies between the declared prices of medical procedures and the actual amounts received by the clinic.
Case details
xUnlocked: Video learning platform for finance teams
xUnlocked is a multi-domain, enterprise-grade learning ecosystem that delivers structured education across Finance, Sustainability, and Data Analysis. The platform enables global organizations to upskill teams at scale through expert-led video courses, interactive pathways, and company-specific learning environments — all built on a single, scalable architecture.
Case details
Keep: Employee retention application
Keep is a next-generation retention platform built to modernize compensation strategies. Instead of relying on equity during volatile market cycles, companies use Keep to offer vesting-based cash bonuses structured as employer-funded loans. Employees receive their full bonus upfront, while the vesting schedule governs forgiveness over time, creating transparency, commitment, and a predictable retention mechanism. Our team helped transform this concept into a secure, compliant FinTech application that streamlines bonus management for employers and delivers a simple, intuitive experience for employees.
Case details
ListAlpha: Investor CRM software system
Managing numerous deals, calls, and transactions can be challenging for investors without a unified system. That's why Geniusee developed an effective and reliable investor CRM software for our UK client. This solution allows investors to seamlessly manage their notes, contacts, plans, and deals through an iOS mobile application or web-based software, all with robust security built on AWS cloud infrastructure.
Case details
Validify – Retail vendor management platform
See how Geniusee built Validify’s scalable vendor management platform with advanced UX, data architecture, and automated RFI workflows.
Case detailsGenuisee’s versatile experience, gained over more than 8 years, has enabled us to form a team with a proven track record.
✅ Enterprise-grade security
With over 250+ IT projects delivered, Geniusee knows that security is non-negotiable. We build custom payment gateways with advanced authentication, encryption, and fraud detection to keep every financial transaction safe and your users’ data protected.
✅ Accelerated solution delivery
In FinTech, speed is everything. Our streamlined payment gateway development process allows us to code, test, and launch solutions quickly, reducing your time-to-market without compromising quality, reliability, or performance.
✅ Transparent communication
We keep you informed and involved at every stage of FinTech solution development, so there are no surprises, only steady progress. Our team can work the way you prefer: fast-paced agile sprints, fixed milestones, or a hybrid approach. This flexibility ensures our process fits seamlessly with your workflow, decision-making style, and company culture.
Virtual terminals
Allow merchants to process payments manually through a secure online interface.
3D secure payment flows
Add an extra authentication layer to reduce fraud and increase customer confidence in online payment systems.
Third-party integrations
Connect seamlessly with banks, PSPs, accounting systems, and other financial services for a unified payment ecosystem.
Certified AWS Partner delivering secure, scalable cloud-native solutions.
ISO-compliant processes ensuring quality, security, and reliability.
Trusted integration partner for financial data connectivity and open banking.
Team of ISTQB-certified QA engineers for world-class software testing.
Consistently rated ★5.0 by clients for reliability and delivery excellence.
Accredited partnership supporting advanced testing and continuous QA automation.
What are the four types of payment gateways?
The four main types are hosted payment gateways, integrated/merchant-hosted gateways, API-based gateways, and local bank gateways, each offering different levels of control and customization.
How much does it cost to develop a payment gateway?
Costs vary by complexity: a simple gateway may start around €25,000–€40,000, while enterprise-grade solutions with multi-currency, fraud detection, and high scalability can exceed €150,000–€250,000. You can estimate your approximate project’s cost using our Estimator.
What are the top 5 best payment gateways?
Popular gateways include Stripe, PayPal, Adyen, Square, and Braintree, chosen for global reach, security, and developer-friendly integration capabilities.
Why are payment gateways so expensive?
High costs reflect advanced security, regulatory compliance, fraud prevention, multi-currency support, and real-time processing infrastructure that ensures reliability and trust.
What is the architecture of a payment gateway?
A payment gateway typically consists of a frontend checkout module, secure API layer, payment processor integration, fraud detection, tokenization, and backend database and transaction management.
Is making a payment gateway hard?
Yes, it requires expertise in security, compliance, banking integrations, transaction workflows, and scalable architecture, but experienced developers like Geniusee simplify the process for businesses.
