Industries Fintech Fintech Development Experts · Since 2010

Money moves fast.
Your fintech should move faster.

We build fintech apps that handle millions in transactions, stay compliant with global financial regulations, and give users the seamless banking experience they demand.

Let's Talk to Our Expert
Security from day one Built for scale
N NetPayInteractive product preview
Total balanceINR
₹4,82,350.00
+₹12,450 (+2.6%) today
Money in₹85,000
Money out₹12,499

Recent transactions

A clear record of every payment.

Amazon PayShopping · Today
−₹2,499
Salary CreditBank transfer · Today
+₹85,000
MF InvestmentInvestment · Yesterday
−₹10,000
Every transaction, in one place.

Your virtual card

Try the card control below.

NetPay
••••   ••••   ••••   4829
RAHUL SHARMAVISA
Card active · Sample data
Sample data. Explore the tabs to see how it works.
15+
Years Experience
1500+
Global Clients
99.9%
Uptime SLA
500+
Solutions Delivered
Why Netleon

Why Financial Businesses Choose Us

Banks are closing branches. Wallets are replacing cash. Trading happens on phones. The companies winning have better technology, not bigger buildings.

In finance, there's no room for "almost works." Your app needs to be fast, secure, compliant, and available 24/7. When someone's money is involved, trust is everything.

See Our Services
Your financial platformBuilt around trust
01 / Security

Protection at every layer.

From the first sign-in to every transaction.

Secure access
Encryption
Protected
by design
Audit trails
Transaction checks
AES-256 encryptionMulti-factor authentication
02 / Reliability

Ready when your users are.

Payments and banking need dependable availability.

99.9%
Uptime SLAAvailability target
Service continuityIllustrative view
Infrastructure that scales
Monitoring and alerting
Recovery and continuity planning
Performance monitoringOngoing support
03 / Compliance

Plan for the rules. Build for change.

Financial requirements belong in the product from day one.

Identity & verificationKYC and AML requirements
Access
Payment securityPCI-DSS architecture considerations
Payments
Data & privacyGDPR and data residency requirements
Data
Traceable activityTransaction reporting and audit trails
Reporting
Compliance mappingUpdates as regulations evolve
04 / Delivery

A clear route to your first release.

Explore the work behind a fintech MVP.

MVP launch12 weeks

Scope and compliance requirements shape the timeline.

  1. 01
    Discover & designMap the product, requirements and user experience.
  2. 02
    Build & validateDevelop in sprints with regular demos and testing.
  3. 03
    Launch & improveStage the release, monitor and keep iterating.
Regular demosStaged deployment
Our Expertise

Fintech Development Services

From neobanks to trading platforms — built for real money, real users, real compliance.

Six services. Explore the product behind each one.
Digital Banking

Digital Banking & Neobank Solutions

Complete modern banking — account management to multi-currency support. Neobanks people actually trust with their money.

  • Account management & fund transfers
  • Virtual & physical card issuance
  • eKYC & video verification
  • Multi-currency & forex support
Discuss your project
Product previewSample data
NetPay / Banking
Savings account₹4,52,800Available balance
Salary credit+₹85,000
Rent payment−₹25,000
Account verified
Explore the controls. This is a sample interface.
Payments

Payment Gateway & Digital Wallets

Secure wallets and gateways built for massive transaction volumes. UPI, international payments — PCI-DSS compliant from architecture level.

  • UPI, cards, net banking integration
  • International payment support
  • Wallet-to-wallet instant transfers
  • PCI-DSS Level 1 compliance
  • Real-time transaction monitoring
Discuss your project
Product previewSample data
NetPay / Checkout
Sample checkout₹2,499Order #NP-2048
Payment methodUPI
Pay withrahul@bank
Preview this UPI payment flow.
Explore the controls. This is a sample interface.
Trading

Stock Trading Platforms

Real-time market feeds, order engines, portfolio tracking — thousands of concurrent users on live markets with zero lag.

  • Real-time market data & charting
  • Order management engine
  • Portfolio tracking & P&L
  • Options chain & derivatives
Discuss your project
Product previewSample data
Market / Watchlist
RELIANCE₹2,845+2.4% · Sample market data
ViewWatchlist
Market dataIllustrative
Explore the controls. This is a sample interface.
Lending

Lending & Credit Platforms

Loan origination, credit scoring, automated underwriting — approval in minutes, not days. Complete lending infrastructure.

  • Instant loan origination system
  • AI-based credit scoring
  • EMI calculator & repayment scheduler
  • Document verification automation
Discuss your project
Product previewSample data
Lending / Application
Loan application#LN-2048Application overview
ProductPersonal loan
Requested amount₹5,00,000
Next stepDocument verification
Application received
Explore the controls. This is a sample interface.
InsurTech

Insurance Technology Solutions

Policy management, claims automation, risk assessment — insurance made seamless, efficient, and customer-friendly.

  • Policy lifecycle management
  • Automated claims processing
  • AI risk assessment engine
  • Customer self-service portals
Discuss your project
Product previewSample data
Insure / My policies
Health insurance₹10LCoverage amount
PolicyHealth cover
StatusActive
AccessPolicy documents
Coverage overview
Explore the controls. This is a sample interface.
Web3 & DeFi

Blockchain & DeFi Applications

Smart contracts, DEXs, tokenization, crypto wallets — production-grade Web3 finance for the decentralized future.

  • Smart contract development & audit
  • Decentralized exchange (DEX)
  • Crypto wallet & custodial solutions
  • Token creation & ICO/IDO platforms
Discuss your project
Product previewSample data
DeFi / Portfolio
Bitcoin$18,2400.32 BTC
ViewAsset balance
WalletDeFi portfolio
Sample portfolio
Explore the controls. This is a sample interface.
Critical Reality

Finance Isn't Like Building a Regular App

One wrong move in fintech costs millions. Here's what makes this domain unforgiving — and why you need battle-tested engineers.

The risk01 / 06

One security flaw = millions lost

Reputation, licenses, user trust — gone in a single breach.

Where the problem spreads
  1. Unknown device
  2. Unchecked access
  3. Exposed data
Illustrative flow
How we address it

Control access. Protect each transaction.

  1. Verify identity

    Multi-factor authentication and access controls.

  2. Protect sensitive data

    Encrypted storage and secure APIs.

  3. Test the defences

    Penetration testing, code reviews and security checks.

Explore our capabilities
The risk02 / 06

10 minutes downtime = crisis

When payments stop, people panic. No "we'll fix it tomorrow."

Where the problem spreads
  1. Service failure
  2. Payments stop
  3. Users affected
Illustrative flow
How we address it

Plan for continuity at every layer.

  1. Prepare for demand

    Scalable infrastructure for changing transaction volumes.

  2. Spot problems early

    Performance monitoring, alerts and audit logs.

  3. Release in stages

    Internal, beta and public deployment with monitoring.

Explore our capabilities
The risk03 / 06

Regulations never stop changing

PCI-DSS, PSD2, GDPR, MiFID — adapt without full rebuilds.

Where the problem spreads
  1. Rules change
  2. Outdated process
  3. Compliance gap
Illustrative flow
How we address it

Make compliance part of the architecture.

  1. Map the requirements

    Review the regulatory landscape during discovery.

  2. Keep activity traceable

    Transaction reporting and audit trails.

  3. Keep the system current

    Ongoing compliance updates as requirements evolve.

Explore our capabilities
The risk04 / 06

Users demand bank-level trust

Your neobank competes with legacy banks for user confidence.

Where the problem spreads
  1. Unclear activity
  2. User uncertainty
  3. Trust erodes
Illustrative flow
How we address it

Give users clarity and control.

  1. Secure the sign-in

    Biometric login and multi-factor authentication.

  2. Make activity visible

    Transaction records and real-time push alerts.

  3. Design for everyone

    Accessible interfaces and multi-language support.

Explore our capabilities
The risk05 / 06

200ms delay = missed trade

Speed is money. 3 seconds feels like forever in payments.

Where the problem spreads
  1. Traffic spikes
  2. Requests queue
  3. Delayed action
Illustrative flow
How we address it

Build for the moments that cannot wait.

  1. Reduce repeated work

    Caching for frequently requested data.

  2. Separate heavy workloads

    Event-driven architecture and independent services.

  3. Watch the workload

    Performance monitoring and auto-scaling for peak loads.

Explore our capabilities
The risk06 / 06

Legacy integrations break silently

Banks, gateways, KYC APIs — one version mismatch halts everything.

Where the problem spreads
  1. API changes
  2. Connection fails
  3. Flow interrupted
Illustrative flow
How we address it

Treat every connection as a dependency.

  1. Define the contracts

    Map data flows, API contracts and integration points.

  2. Validate before release

    Sandbox testing before real transactions.

  3. Trace what happens

    Monitoring and audit trails across connected services.

Explore our capabilities
Core Capabilities

What's Under the Hood

Non-negotiable standards in every Netleon fintech product.

Capability 015 building blocks

Security Architecture

AES-256 encryption, multi-factor auth, tokenization, zero-trust architecture, penetration testing — security is the foundation, not an afterthought.

How it fitsAES-256

Protect stored information.

Encryption helps protect sensitive information in storage. It works alongside access controls, key management and security testing.

Architecture overview
Stored information
AES-256
Encrypted data
Part of your fintech platformDiscuss your platform
Capability 024 building blocks

Performance

Microservices, event-driven architecture, Redis caching, auto-scaling infrastructure for peak loads.

How it fitsRedis

Keep frequent reads close.

Caching helps serve frequently requested information without repeating the same work on the primary data store.

Architecture overview
Repeated request
Redis
Cached response
Part of your fintech platformDiscuss your platform
Capability 034 building blocks

Compliance Ready

PCI-DSS Level 1, GDPR, SOC 2, PSD2 & regional compliance built into every release.

How it fitsPCI-DSS

Plan payment security controls.

Payment-related requirements are considered in the architecture, development process and release reviews.

Architecture overview
Payment requirements
PCI-DSS
Security controls
Part of your fintech platformDiscuss your platform
Capability 046 building blocks

User Experience That Builds Trust

Biometric login, real-time push alerts, offline mode, multi-language, dark mode, WCAG 2.1 accessibility — designed for confidence.

How it fitsFace ID

Make sign-in familiar.

Biometric sign-in can give users a familiar way to access their account on supported devices.

Architecture overview
User device
Face ID
Account access
Part of your fintech platformDiscuss your platform
Capability 054 building blocks

Deep Integrations

SWIFT, SEPA, ACH, Stripe, Plaid, Open Banking APIs, KYC/AML providers & market data feeds connected.

How it fitsStripe

Connect payment workflows.

A payment integration links the product’s checkout and transaction flows with a payment provider.

Architecture overview
Checkout
Stripe
Payment provider
Part of your fintech platformDiscuss your platform
Capability 064 building blocks

Real-Time Analytics

Live dashboards, anomaly detection, predictive insights, and audit trails for every transaction.

How it fitsGrafana

Bring operational signals together.

Dashboards help teams review system activity and performance in one place.

Architecture overview
System signals
Grafana
Operational dashboard
Part of your fintech platformDiscuss your platform
Process

How We Build

Battle-tested process for financial-grade software.

Plan your project

Select a stage to explore the work behind it.

Security runs throughout the process.
Stage 01Week 1–2

Discovery & Compliance Mapping

Business model, users, revenue streams, regulatory landscape — mapped before a single line of code.

From product planning to ongoing support
Inside this stage01 / 07
  1. 01

    Understand the product

    Map users, the business model and revenue streams.

  2. 02

    Map the requirements

    Identify the regulatory landscape and product constraints.

  3. 03

    Set the initial scope

    Agree which user journeys the first release needs.

Stage 02Week 2–3

Architecture & Security Design

Data flows, API contracts, schemas, encryption strategy — where projects succeed or fail.

From product planning to ongoing support
Inside this stage02 / 07
  1. 01

    Map the system

    Connect data flows, services and storage.

  2. 02

    Define the interfaces

    Document API contracts and data schemas.

  3. 03

    Design the security

    Plan encryption and access controls.

Stage 03Week 3–5

UI/UX Design

Trust-building interfaces. Clean, professional, intuitive — confidence in every pixel.

From product planning to ongoing support
Inside this stage03 / 07
  1. 01

    Map the user journey

    Work through the key account and transaction flows.

  2. 02

    Design the screens

    Build clear interfaces for everyday financial tasks.

  3. 03

    Review interaction states

    Cover feedback, errors and important confirmations.

Stage 04Week 5–16+

Agile Development Sprints

2-week sprints, demos every 14 days. Sandbox testing before real money touches the system.

From product planning to ongoing support
Inside this stage04 / 07
  1. 01

    Build in short sprints

    Develop the agreed scope in two-week cycles.

  2. 02

    Review working software

    Demonstrate progress every 14 days.

  3. 03

    Test in a sandbox

    Validate flows before real money enters the system.

Stage 05Ongoing

Security Testing & Audit

Pen testing, vulnerability scanning, code reviews — throughout the process, not just at the end.

From product planning to ongoing support
Inside this stage05 / 07
  1. 01

    Review the code

    Check implementation and sensitive data handling.

  2. 02

    Test for weaknesses

    Run vulnerability scans and penetration testing.

  3. 03

    Review throughout delivery

    Keep security testing active across the process.

Stage 06Go-Live

Staged Deployment

Internal → Beta → Public. Full monitoring & alerting configured before launch.

From product planning to ongoing support
Inside this stage06 / 07
  1. 01

    Start internally

    Validate the release with the internal team.

  2. 02

    Move through beta

    Review the product before wider availability.

  3. 03

    Launch with visibility

    Configure monitoring and alerting before public launch.

Stage 07Forever

Post-Launch Iteration

Ongoing support, optimization, compliance updates, new feature development.

From product planning to ongoing support
Inside this stage07 / 07
  1. 01

    Support the live product

    Address issues and maintain the platform.

  2. 02

    Improve performance

    Review usage and optimize the experience.

  3. 03

    Keep the product current

    Continue compliance updates and feature development.

Case Study

Real Product. Real Results.

Featured project

Stocks.News

Real-time stock market news, trading insights, breaking alerts — fast enough for day traders who need info before the market moves.

View Full Case Study
Product gallery
Stocks.News app overview with market alerts and a stock watchlist
Market news and stock alerts in one app.01 / 03
Stocks.News trading insights and market overview
A closer look at the trading experience.02 / 03
Stocks.News stock alert notification preview
Stock alerts alongside the market overview.03 / 03
100K+Downloads
4.6Rating
<1sAlert Speed
60%DAU Rate

Stocks.News product preview
Why Us

Why Fintech Companies Choose Netleon

Open a card to see the approach behind it.

Experience

We've Done This Before

Live trading platforms, payment systems, financial apps handling real money. We know what breaks under pressure.

Explore our approachOur approach

  1. Start with the transaction

    Map how money and data move through the product.

  2. Plan for failure

    Consider interrupted payments, retries and recovery.

  3. Test the full journey

    Check connected systems as well as individual screens.

Security

Security From Day One

Encryption, access control, audit logging — baked into the foundation, not painted on top after launch.

Explore our approachOur approach

  1. Protect the data

    Build encryption into storage and communication.

  2. Control access

    Define who can view, change and approve information.

  3. Keep an audit trail

    Make important actions traceable from the start.

Compliance

We Track Regulations

PCI-DSS, GDPR, PSD2 updates? We build systems that adapt without requiring full rebuilds.

Explore our approachOur approach

  1. Map requirements

    Identify the rules that apply to the product and market.

  2. Separate the rules

    Keep policy changes manageable within the architecture.

  3. Review each change

    Check updates against affected workflows and controls.

Scale

Built for Scale

500 users today, 50,000 next quarter. Architecture that scales without rewriting from scratch.

Explore our approachOur approach

  1. Find the pressure points

    Understand where higher usage adds load.

  2. Scale the right services

    Let busy parts of the platform grow independently.

  3. Check under load

    Test capacity before more users depend on it.

Frequently Asked Questions

How long does it take to build a fintech app?

Basic MVP: 8-12 weeks. Full platform (trading/neobank): 4-8 months depending on complexity and compliance requirements.

How much does fintech development cost?

MVP: ₹15-25 lakhs. Full-scale with trading engines & compliance: ₹40 lakhs to ₹1.5 crore+. Depends on features.

How do you handle security?

Encrypted storage, secure APIs, penetration testing, vulnerability assessments, PCI-DSS compliance — in every sprint from day one.

Can you help with financial compliance?

Yes. We architect for KYC, AML, transaction reporting, data residency requirements — and keep systems updated as regulations evolve across jurisdictions.

Do you work with startups or enterprises?

Both. Lean approach for early-stage startups, structured delivery for enterprise scale. We adapt to your business stage.

What about post-launch support?

Ongoing support — bug fixes, security patches, performance monitoring, compliance updates, and continuous feature development.

Have a specific requirement?

Talk to our team
Your next project

Ready to build something exceptional?

Let's discuss how Netleon can support your business growth with scalable, well-engineered solutions.

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