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FinTech software development

FinTech software development for payments, lending and digital banking

FinTech software development for payment, lending and banking products, built to PCI DSS, KYC and AML requirements, with fraud scoring and bank integrations that cut manual review.

1,300+

clients across 45+ countries

14 years

building software since 2012

500+

projects shipped since 2012

50+

AI systems running in production

4.8/5

on Clutch, from 33 verified reviews

ISO

9001:2015 certified delivery process

Clutch 4.8/5 badge

Clutch 4.8/533 verified client reviews

ISO

ISO 9001:2015Certified delivery process

PCI

PCI DSSWe build card flows to it

GDPR

GDPRCustomer data under EU rules

Financial services teams and global brands we have worked with

EdelweissAmeriSave MortgageAirtelSonyNikeVolkswagenDomino's
Definition

What FinTech software development covers

Banking, payments, lending, wealth, insurance and digital assets, all handling money and identity data.

What is FinTech software development?
FinTech software development is the design and engineering of secure financial software for banking, payments, lending, wealth management, insurance and digital finance. It pairs web, mobile, API and cloud architecture with financial-grade security, compliance work such as KYC, AML and PCI DSS, banking and payment integrations, and AI for fraud detection and credit scoring.
Why FinTech builds stall

Four problems financial software has to solve first

Fraud review is still manual

Static rules and analyst queues miss new patterns and slow good customers down. We add ML scoring on transactions, devices and behavior, with analysts kept in the loop.

Onboarding breaks at KYC

Identity checks spread across vendors and spreadsheets cause drop-off and audit gaps. We automate verification, screening and risk-based checks in one flow.

Compliance arrives at the end

Retrofitting audit logs, encryption and access control costs months. We design them into the architecture before the first sprint.

The core system will not move

Legacy banking platforms cannot take new products safely. We modernize through APIs and a staged cloud migration while the core system keeps running.

FinTech services

FinTech software we build

From a payments MVP to a lending platform that runs your whole book.

Digital payments

Secure transactions across banks and payment platforms, with fraud checks, tokenization and UPI and wallet integrations.

Online banking

We build transfers, bill payments, deposits and account opening for web and mobile, wired to payment gateways, KYC and AML checks, and credit bureaus.

See mobile app development

Lending software

We build personal, business, mortgage, auto and BNPL lending platforms for banks, NBFCs and credit unions, with KYC and e-signature built in.

See custom software development

Investment and wealth

We build portfolio management, robo-advisory and trading platforms for wealth managers, advisors and brokers.

Insurance platforms

We build underwriting, document processing, claims and fraud tools that connect insurers, brokers and policyholders, covered in depth under insurance software.

Digital assets

We build exchanges, tokenization and DeFi platforms, and handle wallet operations, settlement and compliance.

Planning a payments, lending or banking product?

Talk to us about scope, integrations and compliance before you commit budget.

Book a FinTech strategy call
Technology

Payment and banking integrations, fraud and credit technology

We pick the technology that connects your data, systems and operations. These four come up on most FinTech builds.

Fraud and risk intelligence

Transactions, user behavior and device fingerprints scored as they happen, so suspicious activity is flagged before money moves.

Transaction→Signals→Risk model→Decision

AI credit scoring

Credit history, income, repayment behavior and approved transaction data used to assess borrower risk before credit is approved.

Application→Data→Scoring model→Decision

Open Banking

Secure API connections to authorised banks and data providers validate accounts instantly in payments, lending and analysis.

Consent→Bank APIs→Account data→Product

Document intelligence

Financial and identity documents read, extracted and checked for missing fields and suspicious attributes.

Upload→Extraction→Checks→KYC record
Scala AI for FinTech

AI in FinTech, added to the financial products you run

Built by Scala AI, our AI engineering team, and wired into the systems you already run.

Fraud and monitoring
ML fraud detectionTransaction monitoringAnomaly alerts
Onboarding
Automated KYC and AMLBiometric authenticationDocument intelligence
Credit and advice
AI credit scoringAI financial advisorRisk dashboards
Payments
Gateway integrationMulti-currency and cross-border checksOpen Banking
Assistants
Support copilots with RAGPolicy and filings searchVoice and chat
Security and compliance

Security and compliance in FinTech software

Security controls are designed in before the first sprint and tested in every release.

ISOGDPR

PCI DSS

We build card flows to PCI DSS, with tokenization so raw card data stays out of your systems.

KYC and AML

Identity verification and screening built into onboarding, with an audit trail for every check.

GDPR

We handle customer data under EU rules for European products and users.

ISO 9001:2015

Our certified delivery process includes encryption, access control and audit logging as standard.

The ScalaCode team: the engineering floor, a large group outside the office, the team at a tech expo and a Diwali group photo
How we work

FinTech software development process, from scoping to launch

A focused FinTech MVP takes 6 to 8 weeks. For a platform with many integrations, advanced security and AI, discovery fixes the schedule in writing, and AI coding agents help our engineers ship it faster.

  1. 01

    Discovery and requirements

    We define the product, users, transaction flows and integration list before design starts.

    1 to 2 weeks
  2. 02

    UX and secure architecture

    We plan APIs, databases, authentication, security controls and cloud for transaction-heavy load.

    2 to 3 weeks
  3. 03

    Build and financial integrations

    We build the frontend, backend and mobile apps, wired to payment gateways, banking APIs and KYC providers.

    Set in discovery
  4. 04

    Testing and security assurance

    We test payment flows, API integrations, authentication and realistic financial scenarios before release.

    2 to 4 weeks
  5. 05

    Deployment and launch

    We set up production, migrate data and turn on monitoring, so the product serves users from the first day.

    1 to 2 weeks
  6. 06

    Optimization and support

    After launch we ship security patches, performance tuning, integration updates and new features, including AI for fintech such as fraud detection.

    Ongoing
Quantflo managed funds screen listing the funds in a client portfolio
Case study · Portfolio management

Quantflo: a portfolio management system for financial professionals

ScalaCode built a portfolio management system for Quantflo, used by financial professionals who manage many clients and portfolios. It covers fund management, public investment models and strategic asset allocation, with separate administrative and user roles.

Role-based

admin and user access

ReactReduxJestCypress
Read the Quantflo case study
A candlestick trading chart on a dark screen
Since 2012

One team, 14 years of shipping

500+

projects shipped since 2012

50+

AI systems running in production

1,300+

clients across 45+ countries

14

years building software, since 2012

Client reviews

Rated 4.8/5 by the clients we build for

Verified reviews from Clutch and GoodFirms, and clients on camera.

Clutch4.8
★★★★★

33 verified reviews on Clutch

James Ellis, founder of TipStars, in his video review
YouTube video reviewJames EllisFounder, TipStars
Clutch review★★★★★
“They make every project comfortable, deliver on time, and are well-organized.”
Asen BahtevCo-Founder, MNDB LLCMobile and web app for a proprietary trading firm
Clutch review★★★★★
“What stood out about Scalacode was their consultative approach and commitment to QA.”
Amie ColemanSenior Director, B2B Marketing, FlywireMobile app design and development for a payment software company
Clutch review★★★★★
“ScalaCode treated our financial ecosystem with the absolute seriousness it required.”
Andy LewisHead of Digital Payments, PayPoint plcUX/UI design for a financial services company
GoodFirms review★★★★★
“Their team demonstrated deep knowledge in cloud security, automation, and performance optimization, allowing us to handle vast amounts of financial data efficiently.”
Elvira LeftingManaging Director, Finance in MotionCloud migration of financial operations
Clutch review★★★★★
“They didn't just build an algorithm; they built a tool that respects the nuances of Indigenous reconciliation.”
Kevin TaylorVP, SVXAI and software development for a nonprofit financial services firm
Clutch review★★★★★
“What sets ScalaCode apart is their technical AI expertise and an understanding of a client's organizational ethos.”
Laurence LongetDirector, MGENAI development for an insurance company
Clutch review★★★★★
“They understood the business side of our requirements and often brought up solutions or ideas we hadn't considered.”
Lester ChenPartner and Head of Creators, Andreessen HorowitzCustom software for a venture capital firm
Questions buyers ask

FinTech software development FAQs

We will answer any other question on the call.

How much does fintech software development cost?

Every FinTech build starts with a free discovery sprint. An MVP starts from $9,999, custom software from $9,999 and enterprise platforms from $24,999. Product type, integrations, security needs and platforms set the fixed quote.

How do you handle PCI DSS compliance?

We keep raw card data out of your systems wherever possible, using tokenization through PCI-compliant gateways such as Stripe or Adyen, which shrinks your audit scope. Where card data must be handled, we build to PCI DSS with encryption, network segmentation, access control and audit logging. Your assessor runs the audit, and we supply the technical documentation.

Can you integrate Stripe, Plaid and core banking systems?

Yes. We integrate Stripe, Adyen and other payment gateways, Plaid and Open Banking APIs for account data, and core banking systems through their APIs or a middleware layer. Older cores without modern APIs get a service layer, so new products ship without changes to the core. Many core banking systems run on Java, and our Java developers work inside them.

How do you build KYC and AML checks?

We connect identity verification providers for document and selfie checks, run sanctions and PEP screening, and apply risk-based rules that send only flagged cases to an analyst. Every check is logged with its result, so audits have a full trail.

How long does a fintech app take to build?

A focused MVP takes 6 to 8 weeks. A complex platform with many integrations, advanced security and AI is scheduled in the discovery sprint, and our engineers use AI coding agents to shorten the build.

Can you add AI fraud detection?

Yes. We add ML fraud scoring on transactions, devices and behavior to an existing product, running beside your rules engine at first so you can compare results. Analysts review flagged cases, and the model is retrained as new fraud patterns appear.

Can you build an MVP for a FinTech startup?

Yes. We build a focused MVP around the key customer and business flows, so you can validate the idea and collect feedback before adding scope.

Will we own the source code?

Yes. Ownership transfers under the agreed contract terms, so your team can maintain, scale and extend the application.

What sets ScalaCode apart is their technical AI expertise and an understanding of a client's organizational ethos.
Laurence LongetDirector, MGEN
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  • Advice from a team that has built payment and finance flows
  • Integrations, compliance and timeline covered up front
  • Free, with no obligation to build with us

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