Fintech App Development Digital Banking, Payments, Lending, Wealth Management, InsurTech & RegTech

Fintech App Development Company for Banks, Lenders, Payment Platforms & Startups

Fintech App Development Company for Banks, Lenders, Payment Platforms & Startups

We build fintech applications for regulated financial institutions and fintech startups covering digital banking, payments, lending, wealth management, InsurTech, RegTech, and embedded finance.
Every product is built to the compliance standards the financial sector requires. That includes PCI-DSS for payment systems, PSD2 for open banking integrations, GDPR and CCPA for data privacy, AML and KYC for financial crime prevention, and regional frameworks including FinCEN for the US market and FINTRAC for Canada.
Compliance architecture, security controls, and audit logging are built into every product from the first sprint not added after development is complete.

What Fintech App Development Services We Offer

What Fintech App Development
Services We Offer

We build fintech products across consumer finance, business finance, and financial infrastructure from mobile banking apps and payment gateways to lending platforms, wealth management tools, InsurTech systems, and RegTech compliance platforms. Each product is scoped to the regulatory environment it operates in.

Custom Fintech Application Development

We build custom fintech applications from scratch, covering architecture design, security implementation, compliance layer integration, API connectivity, and deployment. Product types include digital wallets, online lending platforms, investment apps, neobanking platforms, and multi-sided financial marketplaces.

Mobile Banking App Development

We build mobile banking apps for retail and corporate banking, covering real-time account and transaction management, biometric login (Face ID, fingerprint), virtual and physical card management, IBAN/SWIFT transfers, multi-currency accounts, in-app customer support, and open banking API integration for PSD2-compliant account aggregation.

Payment Gateway Integration & Digital Wallets

We build payment systems and digital wallets supporting QR code payments, P2P transfers, recurring billing, multi-currency settlement, BNPL payment flows, and POS integration. Gateway integrations cover Stripe, Braintree, Adyen, PayPal, and regional payment rails. All payment systems are built to PCI-DSS Level 1 standards.

Blockchain-Based Fintech Solutions

We build blockchain-based fintech products, including smart contract development on Ethereum and Solana, tokenized asset platforms, DeFi protocol integrations, cross-border payment rails using stablecoin settlement, crypto wallets with cold storage support, and private blockchain networks for enterprise financial data sharing.

AI Financial Analytics & Personalization

We integrate AI into fintech products for fraud detection and transaction anomaly scoring, credit risk assessment, spending pattern analysis, personalised investment recommendations, automated financial reporting, and regulatory compliance monitoring. AI models used in financial applications are built with explainability requirements (XAI) for regulatory audit trails.

Smart Investment & Trading App Development

We build investment and trading platforms covering real-time market data feeds (via Refinitiv, Bloomberg, or Alpaca), portfolio management dashboards, secure order execution engines, options and derivatives support, robo-advisory modules, and compliance workflows for SEC/FCA-regulated trading environments.

WealthTech & Robo-Advisory Platforms

WealthTech platforms and robo-advisory systems serve a different buyer from trading apps; they target retail investors and independent advisors who need goal-based financial planning, automated portfolio rebalancing, and regulatory compliance. We build platforms with tax-loss harvesting, risk profiling, fractional investing, and support for MiFID II and SEC Investment Adviser Act requirements.

Embedded Finance Solutions

We build embedded finance infrastructure for non-financial platforms, integrating BNPL flows, micro-lending, in-app savings accounts, credit lines, and insurance products directly into ecommerce, logistics, HR, and retail applications via Banking-as-a-Service (BaaS) APIs. Integration options include Railsr, Synapse, and Stripe Treasury, depending on geography and product requirements.

Financial Management App Development

We build personal and business finance management apps covering multi-account aggregation via open banking APIs, automated budget categorisation, savings goal tracking, bill payment scheduling, expense analytics dashboards, and tax summary exports. Data is handled to GDPR and CCPA standards with end-to-end encryption for all financial data in transit and at rest.

Every service above is available as a standalone engagement or as part of a full fintech platform build. The next section covers the specific fintech product categories we deliver within each service area.

Discover Our Custom Fintech App Development Solutions for Today's Modern Finance Services

Every fintech product operates under a different regulatory framework and serves a different user workflow. The product categories below reflect those differences each one built to the compliance standards and integration requirements of its specific financial vertical.

Digital Banking

We build neobanking platforms and digital banking apps for consumer and SME banking, covering multi-currency accounts, IBAN issuance, SWIFT/SEPA transfers, transaction management, and open banking integration. Platforms are engineered to PSD2 (EU), RBI (India), and FCA (UK) compliance requirements.

Payments

We build payments infrastructure for P2P transfers, QR payments, recurring billing, POS integration, cross-border settlements, and multi-currency flows. Payment systems support card networks (Visa, Mastercard), alternative payment methods (SEPA, UPI, Faster Payments), and are built to PCI-DSS and ISO 20022 standards.

Lending and Mortgage

We build digital lending platforms for consumer loans, MSME financing, and mortgage origination — covering KYC/AML verification, automated credit underwriting, bureau integration (Experian, Equifax, CIBIL), EMI and repayment management, and digital loan agreement execution. Platforms comply with TILA (US), FCA Consumer Credit Act (UK), and RBI lending regulations.

Wealth Management

We build wealth management platforms for retail investors and financial advisors, covering portfolio tracking, asset allocation modelling, AI-generated investment recommendations, advisor dashboards, client reporting, and compliance modules for MiFID II, SEC RIA regulations, and SEBI (India) portfolio management guidelines.

InsurTech

We build InsurTech platforms for insurance carriers, brokers, and comparison aggregators, covering digital policy issuance, premium calculation engines, online claims initiation and tracking, fraud scoring using ML models, and customer self-service portals. Systems comply with Solvency II (EU), Lloyd's market standards (UK), and IRDAI (India) regulations.

Crypto Finance

We build crypto finance products, including custodial and non-custodial wallets, centralised and decentralised exchange platforms, staking apps, DeFi protocol integrations, and NFT marketplace infrastructure. Security includes multi-sig wallet support, cold storage custody, and MPC (Multi-Party Computation) key management. Products are built with FATF Travel Rule compliance for regulated jurisdictions.

RegTech & Compliance

RegTech platforms automate the compliance workflows that regulated financial institutions must execute continuously, including AML/KYC screening, suspicious activity reporting, regulatory capital calculations, data privacy compliance monitoring, and internal audit management. We build RegTech platforms for banks, fintech startups, and NBFCs covering automated regulatory reporting, AML/KYC compliance workflows, transaction monitoring, SAR filing automation, data privacy compliance dashboards, and internal audit management. Systems support FinCEN (US), FCA (UK), RBI (India), and FATF cross-border compliance frameworks.

Need a Dedicated Fintech App Developer for Your Project?

Tell us your product type, target market, and compliance requirements. We’ll come back with an architecture approach, compliance framework, and development estimate within 1 business day.

Beyond the services and products above, here are the specific integration partners, payment rails, and compliance platforms we connect to across every fintech build.

Key FinTech Integrations We Support

The integration layer is where most fintech projects gain or lose compliance ground. Below are the payment processors, banking infrastructure providers, identity verification systems, and compliance platforms we integrate with across every layer of the fintech stack.

What Fintech Engineering in a Regulated Environment Actually Requires And How We Deliver It?

What Fintech Engineering in a Regulated Environment
Actually Requires And How We Deliver It?

Building a fintech product that passes compliance review and performs under real financial transaction load requires more than general software development skills. It requires developers who understand PCI-DSS architecture, AML and KYC workflow requirements, open banking integration standards, and the performance expectations of systems handling real money. Here is what our fintech engineering practice brings to every build.

1

Domain-Specific Expertise

Our team has direct fintech experience across retail banking, SME lending, payment processing, insurance administration, and wealth management having built systems that handle real financial transactions, not prototype demos. We understand the compliance, latency, and data integrity requirements of each vertical before the first architecture decision is made.

2

Security-First Architecture

We architect fintech systems with layered financial security AES-256 encryption at rest, TLS 1.3 in transit, HSM key management for sensitive financial data, multi-factor authentication, tokenisation for card data, API rate limiting, and OWASP ASVS Level 2 compliance. Security controls are designed into the system architecture before development begins.

3

Compliance-Ready Solutions

We build compliance requirements into fintech architecture from day one. Standards covered include PCI-DSS for payments, PSD2 for open banking, GDPR and CCPA for data privacy, AML and KYC for financial crime prevention, and regional frameworks including FCA for UK markets, RBI for India, MAS for Singapore, and DFSA for Dubai. Compliance documentation is produced throughout development for regulatory audit trails.

4

Scalable Microservices Infrastructure

We architect fintech systems as microservices from the start enabling independent scaling of high-traffic components including payment processing, transaction ledger, and user authentication without rebuilding the full system. Infrastructure is cloud-native on AWS, Google Cloud, or Azure, with event-driven architecture using Kafka for real-time financial transaction processing.

5

Agile and Transparent Processes

We run two-week development sprints with compliance checkpoints built into each sprint's acceptance criteria. No feature is considered complete until its security controls, audit logging, and data handling requirements are validated. Milestone-based delivery gives your technical and compliance teams review points before work progresses.

Ready to Scope Your Fintech Product?

Whether you are building from scratch or adding features to an existing financial product share your requirements and we will come back with a compliance-ready technical approach within two business days.

Compliance is not a feature layer in fintech, it is a foundational architecture requirement. Below are the specific regulatory frameworks we build across payments, banking, data privacy, and anti-financial crime.

Financial Compliance Standards We Build To

Financial Compliance Standards
We Build To

FinTech products operate in one of the most regulated software environments in any industry. We treat compliance requirements as architecture constraints from day one, not as a post-build validation layer. Below are the specific regulatory frameworks we build across payments, banking, data privacy, and anti-financial crime.

In-House Team, No Outsourcing

Every engineer on your project is a full-time ETechViral team member. We do not bring in contractors for specific phases or outsource development to reduce costs. The team you speak to in the consultation is the team that builds your product which means stronger accountability, cleaner architecture, and a team that is invested in the outcome.

Senior Engineers on Every Project

We keep our team small and focused so every client engagement receives senior-level engineering attention. Junior developers do not lead architecture decisions on our projects. The engineers who design your system are the same ones who build and ship it.

Narrow Technology Focus, Deep Expertise

We work in a defined set of technologies Flutter, Python FastAPI, OpenAI API, WebRTC, TensorFlow, React, and AWS. That focus is intentional. It means our engineers have built multiple real products in the stack your product will run on not learned it on your project.

FinCEN-Compliant Development

We build to FinCEN guidelines for US-market fintech products, implementing Bank Secrecy Act (BSA) requirements, including Customer Due Diligence (CDD), Beneficial Ownership verification, Suspicious Activity Report (SAR) filing automation, Currency Transaction Report (CTR) generation, and OFAC sanctions screening integration.

FINTRAC-Aligned FinTech Solutions

We build FINTRAC-compliant fintech systems for Canadian market products, covering PCMLTFA requirements, Large Cash Transaction Reports (LCTR), Electronic Funds Transfer Reports (EFTR), Suspicious Transaction Reports (STR), and Know Your Client (KYC) identity verification aligned with FINTRAC guidance.

PSD2 & Open Banking Integration

We build PSD2-compliant open banking integrations covering Strong Customer Authentication (SCA) with 3DS2 implementation, XS2A (Access to Account) API development, TPP (Third Party Provider) registration support, and consent management systems. We also build to the UK Open Banking Standard (OBIE) and Australian CDR (Consumer Data Right) for clients in those markets.

PCI-DSS Secured Financial Applications

We build payment applications to PCI-DSS v4.0 standards, covering cardholder data environment (CDE) scoping, point-to-point encryption (P2PE), tokenisation, network segmentation, vulnerability scanning, penetration testing requirements, and documentation for PCI-DSS Merchant Level 1 or Level 2 compliance, depending on transaction volume.

GDPR-Centric Data Protection

We implement GDPR compliance architecture for EU-market fintech products, covering lawful basis documentation for financial data processing, consent management and withdrawal workflows, data subject rights handling (access, erasure, portability), Data Protection Impact Assessments (DPIAs) for high-risk processing, and Data Processing Agreement (DPA) templates for third-party vendors.

ePrivacy-Compliant Interfaces

We build ePrivacy-compliant financial interfaces covering cookie consent management (IAB TCF 2.2 framework), electronic communication opt-in management, marketing preference centres, and device fingerprinting restrictions for EU-regulated financial platforms. ePrivacy and GDPR compliance are implemented together to close all gaps in the EU data protection framework.

 AML-Focused Architecture

We implement AML architecture covering Customer Risk Rating (CRR) models, real-time transaction monitoring with configurable rule sets, Politically Exposed Persons (PEP) screening, sanctions list checking (OFAC, UN, EU), SAR generation and filing workflows, and integration with AML screening providers (ComplyAdvantage, Refinitiv World-Check). Systems are built to the FATF Recommendations.

The compliance frameworks above are implemented using a specific technology stack selected for financial-grade performance and security. Here is what that stack covers.

Fintech Technology Stack AI, ML, Cloud Infrastructure, RPA & Cybersecurity

We select technologies for fintech projects based on transaction throughput requirements, compliance constraints, and integration needs not on what sounds impressive. Below is our working stack across AI and ML, cloud infrastructure, automation, and financial-grade security.

Artificial Intelligence (AI)

We integrate AI into fintech products for credit scoring, fraud and anomaly detection, predictive churn analysis, LLM-powered conversational banking, customer segmentation, and automated regulatory reporting. AI models used in regulated financial decisions are built with explainability (XAI) for model governance and regulatory review under EU AI Act and OCC AI guidance frameworks.

Machine Learning (ML)

We build ML models for fintech applications covering fraud detection, credit risk scoring, transaction anomaly detection, customer behaviour analysis, algorithmic trading signal generation, and compliance pattern recognition. Models are validated for bias, accuracy, and regulatory explainability before deployment in regulated financial workflows.

Cloud Computing

We deploy fintech infrastructure on AWS (PCI-eligible services, AWS GovCloud for US-regulated products), Google Cloud Financial Services, and Azure (financial-grade SLAs), with FIPS 140-2 compliant encryption, data residency controls for GDPR and RBI data localisation requirements, and disaster recovery configurations meeting financial sector RTO/RPO requirements.

RPA

We implement RPA for fintech back-office automation, covering KYC document verification, loan application processing, claims adjudication, regulatory report generation, and reconciliation workflows. RPA bots in financial environments are built with full audit logging for compliance traceability.

Cybersecurity & Threat Intelligence

We implement financial-grade cybersecurity across all fintech products, AES-256 and TLS 1.3 encryption, SIEM integration for real-time threat monitoring, zero-trust network architecture, penetration testing and vulnerability disclosure programmes, and threat intelligence feeds specific to financial sector attack patterns. Financial services is the most targeted sector for cyber attacks, security is built into our development process, not added at the end.

Fintech Development Tools Mobile Frameworks, Backend, Databases, Cloud & Security

Fintech Development Tools Mobile Frameworks, Backend,
Databases, Cloud & Security

We select technologies for fintech based on transaction throughput requirements, compliance constraints, and integration compatibility not on trend. Below is our working stack across mobile, backend, database, cloud infrastructure, and financial security layers.

Mobile App Development 

Flutter

React Native

Swift UI

Kotlin

Jetpack Compose

Web & Admin Panal 

React.js

Next.js

Angular

Vue.js

Backend & API

Node.js

Python

Django

Fastapi

Java

.NET

Databases

PostgreSQL

MongoDB

Redis

MySQL

TimescaleDB

Cloud & DevOps Infrastructure

AWS

HIPPA

Google Cloud

Healthcare API

Azure

Docker

Kubernetes

Security & Cryptography

HSM

Vault

OWASP ASVS Level 2

OAuth 2.0

OpenID Connect

mTLs

Mobile App Development 

Flutter

React Native

Swift UI

Kotlin

Jetpack Compose

Web & Admin Portals 

React.js

Next.js

Angular

Vue.js

Backend & API

Node.js

Python

Django

FastAPI

Java

NET

Databases

PostgreSQL

MongoDB

Redis

MySQL

TimescaleDB

Cloud & DevOps Infrastructure

AWS

HIPPA

Google Cloud

Healthcare API

Azure

Docker

Kubernetes

Security & Cryptography

HSM

Vault

OWASP ASVS Level 2

OAuth 2.0

OpenID Connect

mTLs

Fintech Development Process 7 Phases From Product Planning to Compliant Deployment

We build fintech products through a structured, compliance-aware process, with regulatory validation at each phase, not only at launch. Every milestone has defined deliverables your technical, legal, and compliance teams can review before work progresses.

Project Planning

We start with a planning phase covering your product scope, target regulatory environment, existing system integrations, user types, and compliance obligations. Output: a documented product brief, regulatory compliance map, and development roadmap, reviewed and signed off before design begins.

Industry & Technology Research

We research the specific regulatory requirements for your target market (FinCEN, FCA, RBI, MAS, depending on geography), evaluate technology stack options against your compliance constraints, and review competitor product architecture for differentiation opportunities. Research outputs inform architecture decisions before a line of code is written.

Prototype & MVP

We validate fintech concepts through clickable prototypes or functional MVPs, covering core transaction flows, compliance-gated user journeys (KYC, onboarding, consent), and security architecture proofs-of-concept. MVP scope includes the minimum compliance layer required to test with real financial data, not just UI interactions.

UX Design & Agile Development

Our UX team designs financial interfaces around the trust and compliance expectations of financial users, clear fee disclosures, consent flows, error states for transaction failures, and WCAG 2.1 AA accessibility. Development runs in two-week sprints with compliance validation integrated into each sprint's acceptance criteria.

QA & Testing

Every fintech build goes through functional, regression, load, security penetration, and compliance testing. For payment systems, we run PCI-DSS compliance validation. For banking products, we run OWASP ASVS Level 2 security testing. Testing documentation is produced for compliance audit trails.

Deployment & Store Launch

We deploy fintech products with a phased rollout, starting with a controlled user cohort to validate transaction flows, compliance controls, and system performance under real load before full deployment. For regulated products, we produce deployment documentation for regulatory notification requirements where applicable.

Maintenance & Post-Launch Support

Post-launch support covers security vulnerability patching, regulatory compliance updates when PCI-DSS, GDPR, or AML regulations change, performance monitoring under growing transaction volume, and feature development under defined SLAs. We provide quarterly compliance review reports for your risk and compliance team.

Fintech Products We've Shipped to Production With Compliance Architecture and Operational Outcomes

Every project below started with a specific technical or compliance problem a lending platform with no automated KYC, a payment processor that could not handle peak transaction load, an insurance platform with manual claims processing creating compliance gaps. Here is what we built and what changed operationally as a result.

The clients behind those products share what the build process was like and how the system has performed under real financial transaction load

Unlimits AI

DentaSmart is a mobile app that uses AI and 3D tech to simplify dental care, from early diagnosis to personalized treatment.

DantaSmart

DentaSmart is a mobile app that uses AI and 3D tech to simplify dental care, from early diagnosis to personalized treatment.

What FinTech Clients Say About Working with ETechViral

Banks, fintech startups, lending platforms, and payment processors share what it was like to work with ETechViral, from requirements through to the deployed system. Their feedback covers the technical quality of the build, compliance architecture, communication during the project, and how the system has performed under real financial transaction load.

Amir Khan and his team is very responsible and works well. We have worked together and have been able to produce a good quality application. It has been easy to manage the project and they has delivered well. I would recommend others to use his services as they provide 100% perfect services.

Yves Rumuri Founder - CallHome Calling App

Amir Khan and his team is very responsible and works well. We have worked together and have been able to produce a good quality application. It has been easy to manage the project and they has delivered well. I would recommend others to use his services as they provide 100% perfect services.

Yves Rumuri Founder - CallHome Calling App

Amir Khan and his team is very responsible and works well. We have worked together and have been able to produce a good quality application. It has been easy to manage the project and they has delivered well. I would recommend others to use his services as they provide 100% perfect services.

Yves Rumuri Founder - CallHome Calling App

Frequently Asked Questions About FinTech App Development

Fintech founders, bank CTOs, payment platform product managers, and lending startups ask similar questions before starting a development project. Cost, timeline, PCI-DSS, open banking, crypto compliance, core banking integration, AML/KYC, and post-launch support are covered below.

There isn’t one fixed price because every project is different. The cost mostly depends on what you want to build and how complex it is. You can schedule a free consultation with our team to discuss your idea, explore options, and get a clear estimate based on your goals.

A basic digital wallet or personal finance app typically takes 3 to 5 months. A payment platform or lending app with KYC integration and compliance architecture takes 5 to 9 months. A neobanking platform, trading app, or InsurTech system typically takes 9 to 18 months depending on regulatory licensing and third-party integrations. Compliance validation, security penetration testing, and regulatory approval processes extend timelines beyond standard app development.

Every project goes through clear stages, research, design, development, testing, and review, so nothing feels rushed or uncertain.

Quality for us starts from how we plan, not just how we code.

Yes, absolutely.

We often work with clients who already have running systems or databases. Our team can analyze your current setup and build custom integrations using APIs or other secure methods to connect new features with your existing software.

Yes, absolutely.

We often work with clients who already have running systems or databases. Our team can analyze your current setup and build custom integrations using APIs or other secure methods to connect new features with your existing software.

Yes, absolutely.

We often work with clients who already have running systems or databases. Our team can analyze your current setup and build custom integrations using APIs or other secure methods to connect new features with your existing software.

Yes, absolutely.

We often work with clients who already have running systems or databases. Our team can analyze your current setup and build custom integrations using APIs or other secure methods to connect new features with your existing software.

Yes, absolutely.

We often work with clients who already have running systems or databases. Our team can analyze your current setup and build custom integrations using APIs or other secure methods to connect new features with your existing software.

Your Fintech Product Starts With One Technical Conversation.

Your Fintech Product Starts With One
Technical Conversation.

No generic proposals. No template-based scoping. Tell us your product type, target regulatory environment, and timeline and we will come back with a compliance-ready development scope and architecture recommendation within two business days.

Whether you are building a new fintech product from scratch or adding compliance architecture to an existing financial system, the conversation starts here.

Fintech developers available now · PCI-DSS, PSD2, AML/KYC & GDPR specialists · Digital banking, payments & lending platforms shipped to production