20 Best Fintech Software Development Companies for Payment Solutions

Find top fintech software development companies trusted to build secure payment systems, next-gen banking platforms, and smart financial tools. Each vendor offers proven expertise to help businesses strengthen their digital finance capabilities.

Data breaches are now one of the most expensive risks financial organizations face. Statista's research for March 2024–February 2025 highlights how steep the impact has become: healthcare faces an average loss of $7.42 million per incident, the financial sector follows at $5.56 million, while public institutions remain the least affected at $2.86 million per breach. 

These numbers explain why payment platforms, banks, and fintech products increasingly depend on strong engineering partners, as security failures are simply too costly to ignore. Against this backdrop, the choice of a development partner becomes a strategic decision rather than a technical one. 

To help readers make sense of a rapidly expanding market, the following section highlights the essential strengths of the most reliable fintech software development companies building modern payment solutions. Below are detailed company profiles outlining their expertise, payment-focused capabilities, and the value they deliver to fast-scaling fintech businesses.

Performance in Numbers

• 12+ years of experience
• 250+ engineers
• 400+ delivered products across Europe, North America, and APAC
• 20+ fintech solutions, from neobanking and PSP modules to crypto, lending, regtech, and investment platforms
• ISO 9001 & ISO 27001 verified processes and information security
• Microsoft & AWS partner, ensuring cloud-ready, compliant architectures

Company Overview

Computools tops this list, with over 12 years of creating digital infrastructure for the global financial industry, including banks, neobanks, PSPs, insurtech solutions, and investment platforms. 

Recognized by IAOP’s Global Outsourcing 100, Computools is ISO 9001 and ISO 27001 certified, combining enterprise-grade processes with flexible delivery. Partnering with Microsoft and AWS, it has a 4.9/5 Clutch rating from verified reviews. Its portfolio includes over 400 solutions, including 20+ fintech platforms used by banks, PSPs, and investment firms.

The company’s fintech software development services span the entire lifecycle of modern financial products from digital banking modules and high-volume payment flows to investment engines, wealth-management tools, and blockchain-based asset operations. Computools engineers tokenization mechanisms, secure crypto-payment gateways, on-chain/off-chain data flows, and hybrid architectures that connect traditional finance with Web3 ecosystems. 

Their expertise extends to RegTech solutions, fraud-detection systems, AI-driven analytics, and the complete modernization of legacy banking systems for higher speed, security, and resilience. Every platform is built to strictly meet PCI DSS, GDPR, SOC 2, DORA, and KYC/AML requirements, ensuring global compliance from day one. Customer feedback shows up to 40% faster transaction processing and as much as a 30% reduction in operational costs, a strong indicator of the company’s focus on measurable ROI.

Operating across the EU, UK, USA, and the Middle East, Computools is a long-term engineering partner for financial organizations seeking reliability, global reach, and future-proof architecture

Performance in Numbers

• 9+ years on the market
• 500+ certified engineers, architects, analysts, and designers
• 1600+ projects delivered across fintech, SaaS, AI, blockchain, and enterprise sectors
• ISO 9001:2015, ISO 27001, CMMI Level 3, Great Place to Work certified

Company Overview

SDLC Corp offers a wide range of digital transformation services. Its strongest momentum today comes from fintech, where it delivers scalable architectures for payments, mobile banking, decentralized finance, and real-time financial analytics.

SDLC Corp offers comprehensive fintech development, including mobile banking apps, PSP integrations, KYC/AML workflows, compliance engines, and custom dashboards. They build blockchain ecosystems—smart contracts, DeFi, crypto payment, and tokenized assets—adhering to PCI DSS, GDPR, ISO 27001, and regulatory standards.

They integrate AI, blockchain, and cloud tech into unified platforms for risk scoring, fraud detection, secure payments, and scalable performance, supporting global markets.

Performance in Numbers

• 12+ years on the market 
• 500+ certified engineers
• 1600+ completed projects across fintech, SaaS, logistics, retail, and enterprise domains
• ISO 9001:2015 & ISO 27001 certified; AWS and Google Partner

Company Overview

Flyte Solutions is a long-standing technology partner delivering secure, scalable software for startups, SMBs, and enterprise clients. Their portfolio spans custom development, AI/ML solutions, mobile and web applications, and cloud-native platforms, with a focus on predictable delivery and business-driven engineering. 

Their fintech capabilities cover payment systems, lending engines, investment platforms, and InsurTech applications designed for regulated environments. Flyte develops multi-currency gateways, fraud-detection mechanisms, KYC/AML automation, onboarding flows, and high-throughput transaction engines.

 The team also builds blockchain-based components such as smart contracts and decentralized financial modules, and uses AI for credit scoring, predictive analytics, and workflow automation.

Performance in Numbers

• 10+ years of engineering experience
• 50–249 specialists
• 30+ fintech and enterprise-grade solutions delivered across 11+ countries
• ISO 9001:2015, ISO 27001, CMMI Level 3 certified

Company Overview

Techmango is a digital engineering partner with expertise in cloud-native banking platforms, automated loan and credit processing, AI-driven fraud detection, regulatory compliance engines, financial data analytics, and digital payment solutions designed for high-throughput environments. The team also integrates CRM, payment gateways, ERP, and core financial systems to create unified, compliant infrastructures for financial institutions.

Their payment-focused work includes designing multi-layer security controls, building cloud-ready transaction flows, enabling predictive monitoring with AI/ML models, and implementing real-time risk- and fraud-detection pipelines. As fintech increasingly integrates AI, secure computation and risk-based models, foundational mathematical literacy becomes a long-term talent requirement for banks and fintech firms. Resources such as Edumentors online maths tutors support that foundational learning pathway. Techmango helps financial organizations modernize legacy systems, improve regulatory posture, and deliver customer-centric digital banking experiences that scale reliably across markets.

Performance in Numbers

• 10+ years on market
• 200+ in-house engineers
• 200+ delivered projects across the US, EU, and APAC
• 200+ fintech and enterprise-grade solutions
• ISO 27001 & ISO 9001 certified; CMMI Level 4
• Microsoft Gold, Google Cloud, ISTQB Silver partnerships

Company Overview

Inoxoft is a US-headquartered engineering partner known for building secure, scalable, and high-performance financial software. It develops custom fintech platforms that support modern banking, payment flows, lending automation, trading logic, and data-intensive financial operations. 

The company’s fintech software development expertise includes digital banking solutions, multi-layered payment systems, trading automation, loan processing engines, banking CRM platforms, personal and business finance tools, and blockchain-powered financial products. 

Inoxoft integrates open banking APIs, KYC/AML mechanisms, fraud detection modules, real-time analytics, and cloud-native infrastructure that aligns with PCI DSS, GDPR, SOC 2, and regional compliance standards.

Performance in Numbers

• 16+ years on market
• 450+ engineers
• 750+ projects shipped for 500+ clients, from startups to Fortune 500 brands
• Clients in 40+ countries and 20+ industries
• Certified to ISO 9001:2015, ISO 27001, SOC 2 Type II, with fast-growth recognition from Deloitte and The Economic Times.

Company Overview

DreamzTech Solutions is a US-headquartered software engineering partner focused on end-to-end digital transformation, AI-powered products, and cloud-native architectures. 

In fintech, DreamzTech offers payment platforms similar to industry leaders: custom gateways like “Stripe-style,” QuickBooks-like accounting, SME invoicing, omnichannel POS for retail and hospitality, and mobile banking apps. 

They integrate with systems like Stripe, WorldPay, SAP, Sage, QuickBooks, NMI, Authorize.net, IPOS, using API-first architecture with real-time sync, tokenization, and strong authentication. Their fintech solutions prioritize security and compliance, adhering to PCI DSS, GDPR, SOC 2, ISO 27001, AML, and KYC standards.

Performance in Numbers

• 12+ years of experience
• 50–249 engineers and specialists
• ISO 9001:2015 certified, official AWS Partner
• Recognized as a Top AWS Company, Top Staff Augmentation Company, Clutch 1000 vendor, and GoodFirms partner

Company Overview

NaNLABS positions itself as a “tech sidekick” for fast-growing, tech-driven companies in Automotive & EV, SaaS, and Cybersecurity that need serious cloud data engineering and real-time processing rather than a typical feature factory.

For fintech and payment-focused products, NaNLABS is best suited as the infrastructure and data partner behind the scenes: designing modern data architectures, building low-latency streaming pipelines for transaction and telemetry data, and enabling real-time analytics for fraud detection, risk scoring, and compliance dashboards. Their work with high-throughput, security-sensitive platforms in cybersecurity translates well to payment systems that must process massive event streams, correlate threats, and respond in near real time.

The company’s AI and machine learning practice adds another layer for fintech teams that want to move beyond basic reporting.

Performance in Numbers

• 13+ years on the market
• 400+ software engineers 
• 800+ successfully delivered projects
• ISO 27001 & ISO 9001 certified

Company Overview

Saigon Technology operates as a global engineering partner with strong expertise in fintech software development. The company builds secure, scalable financial platforms, including payment systems, neobanking solutions, digital wallets, lending platforms, wealth management tools, and core banking modules. 

Leveraging technologies like React, .NET Core, Java, Node.js, Python, AWS, Azure, and GCP, the team integrates AI and machine learning to enable automation, predictive analytics, fraud detection, and real-time insights for financial institutions.

Across banking and PSP projects, Saigon Technology delivers full-cycle development—from consulting and solution design to integration, modernization, and long-term support.

Performance in Numbers

• 10+ years of experience
• 100+ engineers
• 30+ completed fintech projects
• ISO 9001 & ISO 27001 certified

Company Overview

Tallium positions itself as a fully integrated product development partner, delivering secure, scalable financial platforms across banking, lending, payments, wealth management, and digital identity. Their team creates intuitive interfaces, robust transaction flows, and resilient cloud-native systems designed to withstand real-world financial workloads.

Tallium supports fintech organizations with consulting, staff augmentation, and Agile process design using SAFe frameworks. They help clients accelerate delivery, modernize legacy systems, integrate complex third-party APIs, and scale engineering capacity with vetted specialists. 

Performance in Numbers

• 11+ years of experience
• 250+ engineers and product specialists
• 1500+ projects delivered across 15+ countries
• 50M+ active users across solutions built by the team
• ISO 9001:2015, CMMI Level 3, Great Place to Work

Company Overview

SoluLab combines deep expertise in blockchain, AI, Web3, and custom enterprise software to help fintech companies build scalable, secure, and future-ready platforms. 

Operating as a strategic technology partner rather than a standard outsourcing vendor, SoluLab supports fintech organizations through custom development, AI/ML engineering, Web3 architecture, crypto exchange and wallet development, and advanced data science. Their track record includes mission-critical solutions for global brands like Walt Disney, Mercedes-Benz, Goldman Sachs, and the University of Cambridge. 

With a strong focus on compliance, security, and measurable ROI, SoluLab helps clients launch next-generation financial platforms faster, optimize operations, and unlock growth across digital finance, banking, asset tokenization, and enterprise automation.

Performance in Numbers

• 15+ years on the market
• 500+ engineers and technical specialists
• 1500+ digital products delivered
• 1000+ global clients
• ISO 9001:2015 & CMMI Level 3

Company Overview

Openxcell delivers AI-first software development for fintech companies and helps financial organizations launch compliant, efficient, and scalable AI systems.

Beyond AI, Openxcell supports fintech teams with DevOps, SRE, data warehousing, ETL modernization, and full-cycle product development. Their global team builds solutions that accelerate risk assessment, automate loan workflows, enhance customer engagement, and streamline digital payments. 

With a long track record of delivering secure, high-availability systems and strong cost efficiency, Openxcell positions itself as a reliable engineering partner for banks, neobanks, lenders, insurers, and fintech startups building next-gen, AI-powered financial ecosystems.

Performance in Numbers

• 25+ years in software product engineering
• 400+ in-house engineers
• 650+ completed projects across finance and other industries
• 30+ fintech projects in banking, lending, payments, wealth, and insurtech
• ISO 9001:2015, ISO 27001, plus ISO 14001, ISO 45001, ISO 37001

Company Overview

*instinctools is an AI-driven fintech software development company helping banks, lenders, and financial platforms rebuild their digital stack for speed, resilience, and better customer experience. Their teams design and implement end-to-end digital banking ecosystems from core banking and account management to mobile apps, CRM systems, and open banking APIs that comply with GDPR, PSD2, and other regional regulations.

They develop online payment systems (B2B, B2C, P2P, NFC-based) with encryption, PCI DSS–compliant architecture, and easy integration with banking and merchant systems. Their retail finance tools include budgeting, debt management, goal tracking, and gamified money tools for families and young users. 

For insurers and investment firms, *instinctools provides insurtech and wealth platforms with automation and analytics: underwriting, claims, risk detection, trading, portfolio management, and AI robo-advisers that forecast trends and rebalance portfolios.

Performance in Numbers

• 17+ years helping clients ship digital products
• 120+ product and engineering experts
• 1500+ web and mobile projects delivered
• 50+ countries and regions served
• ISO 9001:2015, ISO 27001, CMMI Level 3, Great Place to Work

Company Overview

Promatics Technologies is a web and mobile engineering partner that works with fintech startups, SMEs, and large financial brands to design and build next-gen digital products. Their teams cover the full lifecycle from business analysis and UX for complex financial flows to backend engineering, mobile apps, and QA.

In fintech, Promatics focuses on secure, user-centric solutions: branchless digital wallets, personal finance and wealth-tracking apps, lending and mortgage tools, and multi-account money management with analytics, notifications, and robo-advisory features. Under the hood, they implement multi-layered security, strict monitoring, and fraud-detection mechanisms to keep platforms “hack-resistant” while still fast and convenient for end users. For payment flows, KYC, and onboarding, their teams integrate modern gateways, identity checks, and compliance-ready workflows into one coherent experience.

Performance in Numbers

• 20+ years in global tech outsourcing
• 200+ engineers and data specialists
• 270+ delivered projects across 30+ countries
• ISO 9001:2015, ISO 27001, CMMI Level 3

Company Overview

JetSoftPro builds fintech and banking software that seamlessly integrates into complex corporate ecosystems, from trading engines and mobile banking apps to analytics platforms that consolidate financial data and automate decision-making. 

In finance, they focus on secure integrations, scalable data flows, and compliance-ready infrastructures. Whether it’s investment platforms with AI-curated insights, payment and banking apps, or analytics dashboards for risk and portfolio monitoring, the company emphasizes reliability, speed, and enterprise-grade execution. 

Their ability to adapt teams flexibly and provide stable, long-term support makes them suitable for financial institutions and product companies that seek a reliable engineering partner rather than just a transactional vendor.

Performance in Numbers

• 15+ years in global tech outsourcing and product engineering
• 1,000+ engineers across the KMS group
• 300+ financial services and fintech projects delivered
• ISO 9001 & ISO 27001 certified quality and information security

Company Overview

KMS Technology operates as a product-focused engineering partner for financial institutions, banks, and fintech vendors that need to move fast without sacrificing reliability or compliance.

In fintech, KMS focuses on building secure, resilient platforms where compliance and risk controls are embedded into the architecture from day one rather than bolted on at the end. Their teams design and implement cloud-native banking and payment solutions, AI-enhanced analytics, fraud-detection features, and integrations with core banking systems, KYC/AML providers, and payment gateways. 

The company is equally comfortable re-architecting monolithic systems into modular services and supporting greenfield digital banking or trading products aimed at rapid market capture.

Performance in Numbers

• 17+ years delivering enterprise-grade web platforms
• 200+ completed software projects
• 200+ engineers
• 65+ countries served
• ISO 9001 & ISO 27001 certified development and security processes

Company Overview

XB Software is a full-cycle development company known for building robust, data-driven web platforms that support complex operational workflows. 

Within fintech, XB Software’s expertise shines in building high-load, data-intensive platforms that require precision, transparency, and strong integration capabilities. They develop custom financial dashboards, process automation tools, analytics platforms, and secure back-office systems for lending, payments, and enterprise financial management. 

Their technology stack is particularly well-suited for real-time data visualization, audit-ready workflows, complex reporting, and seamless integration with third-party APIs, making them a reliable partner for fintechs that need stability, speed, and a UI-first approach.

Performance in Numbers

• 16+ years in software development
• 450+ delivered projects across global markets
• 50+ in-house engineers and analysts
• EU-based HQ with engineering centers in Latvia and Ukraine
• ISO-certified processes ensuring predictable quality

Company Overview

Snotor is a European software development company with experience across SaaS, custom enterprise systems, MVP delivery, and full-scale product development. The team builds scalable web and mobile solutions for clients in competitive, fast-moving industries.

In fintech, Snotor’s strengths lie in precise execution, secure architecture design, and rapid delivery of custom financial platforms. They develop solutions such as digital onboarding flows, CRM/ERP modules for financial institutions, customer-facing mobile apps, and internal tools designed to optimize decision-making, automate manual processes, and support seamless integrations with payment providers and banking APIs.

Performance in Numbers

• 19+ years in IT services
• 2,500+ projects delivered
• 1,500+ clients across 27+ countries
• 200+ certified professionals
• $3B+ generated in client revenue
• ISO 9001:2015–certified quality standards

Company Overview

Hiteshi is an India-based software development company with nearly two decades of experience delivering custom web, mobile, cloud, and AI-driven solutions. 

For fintech clients, Hiteshi delivers tailored platforms such as web banking tools, mobile finance apps, automated workflows, RPA modules, and analytics dashboards. Their experience spans secure cloud deployments, compliance-ready architecture, and scalable systems designed to support growth and operational efficiency.

Hiteshi positions itself as a dependable, long-term technology partner—combining accessible pricing with stable engineering processes.

Performance in Numbers

• 15+ years in enterprise product engineering
• 250–999 specialists across the US, Canada, UK, EU, India, and South Africa
• ISO 27001–certified security and processes
• Strong portfolio in AI, data engineering, and HR Tech platforms

Company Overview

Azilen Technologies is a US-based product engineering company specializing in AI-driven transformation across fintech, HRTech, and enterprise platforms. 

Their fintech expertise spans payments, digital wallets, micro-transactions, crypto integrations, cross-border remittance, wealth & asset management platforms, robo-advisory systems, and risk/analytics engines. Azilen combines product strategy, data engineering, and advanced AI/ML to build secure, scalable solutions that improve transparency, automate decision-making, and enhance customer experience across financial workflows.

Performance in Numbers

• 25+ years delivering software excellence
• 650+ engineers
• 5,500+ projects delivered
• 3,000+ global clients across 25 countries
• Top-100 IAOP® global outsourcing provider, Microsoft Gold Partner, multi-year Clutch award recipient
• ISO 9001:2015 and ISO 27001 certified

Company Overview

Radixweb helps organizations accelerate digital transformation through AI-enabled automation, secure architectures, and scalable cloud-native platforms. Their fintech capabilities closely align with modern financial services needs, spanning digital wallets and KYC/AML automation to payment integrations and WealthTech engines. 

Radixweb combines strong product thinking with advanced engineering practices to deliver compliant, secure, and future-ready financial platforms. Agile delivery, transparent collaboration, and mature processes ensure predictable outcomes and accelerated time-to-market.

These twenty companies show something simple but powerful: payment technology only works when the people behind it know how money truly moves between systems, across borders, and, most importantly, between users and businesses who need things to work. They build secure wallets, fast gateways, or compliant KYC flows, with quiet reliability that lets a customer tap “pay” without thinking twice.

Each vendor here offers a unique blend of craft, experience, and curiosity, showing that exceptional FinTech companies develop payment systems that are seamless, secure, and practical for everyday use.