InApps Technology
Fintech & Payments industry illustration
Secure, Regulated Financial Software

Software Engineering for Fintech & Payments

Build compliant, secure, and lightning-fast financial products with a dedicated engineering team that understands regulatory nuances across Vietnam, Singapore, the EU, and the US.

15+fintech products launched

The Challenges We Solve

We have worked across dozens of fintech & payments projects. These are the pain points we hear most, and know how to fix.

Regulatory compliance (PCI DSS, KYC/AML, GDPR) slows time-to-market

High transaction volumes demand sub-second latency at scale

Security vulnerabilities expose customer data and breach trust

Legacy core banking integration is complex and risky

Fraud detection requires real-time ML pipelines that most dev shops cannot build

Our Fintech & Payments Solutions

From product strategy to production deployment, our dedicated teams cover the full engineering lifecycle.

Payment Gateway & Wallet Engineering

End-to-end payment flow design, from front-end checkout to back-end settlement. We build wallets, peer-to-peer transfer systems, and payment gateway integrations with Stripe, Adyen, VNPay, and regional payment rails.

KYC / AML Compliance Systems

Automated customer identity verification, PEP screening, sanctions list checks, and transaction monitoring pipelines. We integrate leading providers (Onfido, Jumio, ComplyAdvantage) and build custom rule engines for your regulatory jurisdiction.

Trading Platforms & Dashboards

Real-time market data feeds, order management systems, portfolio dashboards, and trade analytics. Built with WebSocket streaming and sub-100ms latency on highly available cloud infrastructure.

Lending & Credit Platforms

Loan origination systems, credit scoring integration (alternative data, bureau APIs), loan servicing automation, and collections management, built to handle thousands of simultaneous applications.

🔒 Compliance & Security

PCI DSS, KYC/AML & Open Banking

Our fintech teams hold PCI DSS knowledge across card-present and card-not-present environments. We implement compliance from architecture design, not as a retrofit.

PCI DSS Level 1 compliant card data handling (tokenisation, encrypted storage)

KYC/AML pipelines with automated PEP screening and sanctions list checks

Open Banking API integration (UK FCA PSD2, MAS SGQR, Vietnam NHNN regulations)

GDPR / PDPA data residency and consent management

3DS2 strong customer authentication flows

Relevant Tech Stack

Technologies our fintech & payments engineering teams work with daily.

Node.js
Go
Java (Spring Boot)
Python
PostgreSQL
Redis
Kafka
AWS
Stripe
Terraform
React
TypeScript

Case Studies

Explore our work in the fintech & payments sector.

Frequently Asked Questions

Are your engineers familiar with PCI DSS compliance?
Yes. Our fintech engineers have hands-on experience building PCI DSS Level 1 compliant systems. We implement tokenisation, encrypted storage, access logging, and scope minimisation from the start rather than bolting it on at the end.
Can you integrate with Vietnam's local payment infrastructure?
Absolutely. We have deep experience with VNPay, MoMo, ZaloPay, and Napas interbank transfer. We have also integrated with Singapore's PayNow, Malaysia's DuitNow, and international rails like SWIFT.
How do you handle fraud detection?
We build rule-based fraud detection engines for real-time decisioning, and integrate ML-based anomaly detection using Python/TensorFlow or third-party APIs (Sardine, Featurespace). We can also build velocity checks, device fingerprinting, and 3DS2 flows.
What engagement model works best for fintech projects?
For regulated fintech products, our Offshore Development Center (ODC) model works best, a dedicated team with deep context that stays through compliance certifications and long-term product iterations.

Trusted by Engineering Teams Across 15+ Countries

Jollibee logo – InApps Technology client
KFC logo – InApps Technology client
Lotte logo – InApps Technology client
Prudential logo – InApps Technology client
Future Processing logo – InApps Technology client
Pegas Touristik logo – InApps Technology client
Mega Market logo – InApps Technology client
Haivanship Towage and Shipping Agency logo – InApps Technology client
Stremium logo
Two-Raw-Sisters-logo
InApps-Tessa-logo
Jollibee logo – InApps Technology client
KFC logo – InApps Technology client
Lotte logo – InApps Technology client
Prudential logo – InApps Technology client
Future Processing logo – InApps Technology client
Pegas Touristik logo – InApps Technology client
Mega Market logo – InApps Technology client
Haivanship Towage and Shipping Agency logo – InApps Technology client
Stremium logo
Two-Raw-Sisters-logo
InApps-Tessa-logo

Ready to build your fintech & payments product?

Talk to an InApps ODC consultant. We will scope your project, recommend a team structure, and have engineers interviewing within 5 business days.