Fintech
Software Development

We build fintech software for banks, payment platforms, lenders, and crypto businesses. End-to-end engineering from strategy and design through development, deployment, and support.

TRUSTED. CERTIFIED. PROVEN.

ISO certified Top Clutch Company Logo Top Software Development Company 1 2025 winner hero section logo

$1.76T

Market by 2034

3.5B

Global Users

12+

Years in Fintech

250+

Products Shipped

What to expect

How we work with you

Source code, ML models, design files, infrastructure-as-code, documentation. Yours from day one, in your GitHub organization. No licensing strings, no per-seat surcharges.

UI/UX designers discussing a digital design

Domain depth

Engineers Who Know Finance

Most of our fintech engineers have spent years on banking, payments, or trading systems. You won't be paying for a generalist team to learn ISO 20022 or KYC workflows on your project.

Business team reviewing charts

Scope Clarity

Honest Scope Conversations

If your timeline is tight or your budget doesn't match the scope, we say so before you sign anything. We'd rather pass on a project than agree to one we can't deliver well.

Developers collaborating at a computer

Compliance

Compliance Considered Early

PCI DSS, PSD2, GDPR, SOC 2, and AML/KYC requirements are factored into the architecture from the first sprint. Compliance teams join our discovery sessions, not just our pre-launch reviews.

Person using a dashboard on a laptop

Working software

Demos Every Two Weeks

You see working software at the end of each sprint not slide decks describing what we plan to build. If something's not working, you find out early, while changes are still cheap.

Designer sketching on a tablet with a stylus

Access to engineers

Direct Engineering Access

You talk to the engineers building your product. Not just account managers. Slack, email, or call whatever works for your team's rhythm and time zone.

Team presentation with analytics on screen

Ownership

You Own What We Build

Source code, ML models, design files, infrastructure-as-code, documentation. Yours from day one, in your GitHub organization. No licensing strings, no per-seat surcharges.

Server icon Domain depth Engineers Who Know Finance

Most of our fintech engineers have spent years on banking, payments, or trading systems. You won't be paying for a generalist team to learn ISO 20022 or KYC workflows on your project.

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Target icon Scope Clarity Honest Scope Conversations

If your timeline is tight or your budget doesn't match the scope, we say so before you sign anything. We'd rather pass on a project than agree to one we can't deliver well.

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Security review shield icon Compliance Compliance Considered Early

PCI DSS, PSD2, GDPR, SOC 2, and AML/KYC requirements are factored into the architecture from the first sprint. Compliance teams join our discovery sessions, not just our pre-launch reviews.

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Secure briefcase icon Working software Demos Every Two Weeks

You see working software at the end of each sprint not slide decks describing what we plan to build. If something's not working, you find out early, while changes are still cheap.

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Processor chip icon Access to engineers Direct Engineering Access

You talk to the engineers building your product. Not just account managers. Slack, email, or call whatever works for your team's rhythm and time zone.

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Hand with checkmark icon Ownership You Own What We Build

Source code, ML models, design files, infrastructure-as-code, documentation. Yours from day one, in your GitHub organization. No licensing strings, no per-seat surcharges.

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What we build for you

Nine areas where fintech teams hire us. Each can be a single engagement or part of a larger build.

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Discovery & Architecture

Stakeholder workshops, regulatory mapping, technical feasibility, and a reference architecture. You leave with a fixed-scope proposal, a roadmap, and a realistic timeline

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Custom Platform Engineering

Frontend, backend, data, and DevOps for new fintech products. Cloud-native on AWS, Azure, or GCP with infrastructure-as-code and observability from sprint one

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AI & Data Engineering

Fraud scoring, credit decisioning, document processing, and customer copilots. Includes feature stores, model deployment, drift monitoring, and human-in-the-loop review.

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Core Modernization

Phased migration off mainframe, AS/400, or aging T24 cores. Strangler-fig patterns let new and old systems run in parallel until you're ready to decommission components.

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Digital Wallet Engineering

Stored value, P2P transfers, bill pay, multi-currency support, and tokenization. Apple Pay, Google Pay, and regional wallet integrations included where relevant.

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API Integration Layer

Open banking (PSD2, FAPI), ISO 20022 messaging, payment rail integrations, KYC providers, and partner APIs built once, documented properly, reused across products.

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Legacy System Optimization

Performance tuning, technical debt reduction, observability for systems you can't yet replace. Buy yourself time and stability while planning a longer migration.

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IoT & Hardware Integration

ATM firmware, POS terminals, biometric readers, smart card devices, and self-service kiosks. Secure provisioning, OTA updates, and field-telemetry dashboards.

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Crypto & Web3 Engineering

Exchange infrastructure, custody integration, stablecoin payment rails, on-chain analytics, and Travel Rule compliance. For VASPs and fintechs adding digital-asset capabilities.

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Need just one of these, or a full platform 
build? Both work. Tell us where you are.

Talk to our team
What we focus on

Where we spend our engineering time

Six things fintech teams typically tell us they need help getting right. Where we focus our engineering hours, regardless of the specific project.

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Fraud signals that are useful

Tuning detection so analysts trust the alerts and customers don't get blocked for normal behavior. Quiet improvement, not flashy dashboards.

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Decisions that happen in time

Credit checks, onboarding, and risk scoring that complete while the customer is still on the page. Architecture and integration work that earns its keep.

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Costs that track with usage

Cloud bills, third-party fees, and AI inference costs that scale with the customers you're serving not ahead of them. We watch this carefully.

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Compliance built into the workflow

Audit logs, transaction monitoring, and reporting that produce themselves as platform runs. So compliance teams aren't manually reconstructing things.

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Migrations that don't break things

Phased modernization where new and old run in parallel until you're confident. Cutovers happen on a Tuesday morning, not a tense Sunday at 2am.

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Not sure which path fits your project?

Tell us where you are and we'll recommend the right approach honestly.

Get a free consultation

Use cases

Fintech software we build

Eight areas where fintech teams bring us in. Each card lists what we actually build inside that domain not slogans about it.

Bank icon

Digital banking platforms

For challenger banks, neobanks, and incumbent banks modernizing their digital surface.

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  • Double arrow icon Customer onboarding flows with KYC and document verification
  • Double arrow icon Account opening, transfers, statements, and self-servicing
  • Double arrow icon Card management issuing, freezing, limits, virtual cards
  • Double arrow icon Personal finance features budgets, goals, spending insights
  • Double arrow icon Core banking integration with Mambu, Temenos, or Finacle
Person using smartphone for online payment
Payment card icon

Payment processing systems

Custom payment platforms, or integrations with major processors like Stripe, Adyen, or Visa.

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  • Double arrow icon Authorization, settlement, and reconciliation engines
  • Double arrow icon Card network integrations and direct bank rails
  • Double arrow icon Real-time payments FedNow, RTP, SEPA Instant, UPI
  • Double arrow icon Cross-border FX with corridor-specific compliance routing
  • Double arrow icon Merchant onboarding and KYB workflows
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Wallet icon

Digital wallets & E-wallets

Stored-value wallets with the regional features your users expect.

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  • Double arrow icon Multi-currency stored balances and P2P transfers
  • Double arrow icon Bill pay, mobile top-up, and merchant settlement
  • Double arrow icon Apple Pay and Google Pay tokenization
  • Double arrow icon Loyalty, cashback, and reward programs
  • Double arrow icon Crypto wallet capabilities for custodial and non-custodial use
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Lending & credit platforms

End-to-end loan origination platforms with credit decisioning and servicing built in.

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  • Double arrow icon Application intake, bureau pulls, and alternative data scoring
  • Double arrow icon Automated underwriting and policy engines
  • Double arrow icon Loan servicing, collections, and restructuring workflows
  • Double arrow icon BNPL infrastructure for consumer and SME lending
  • Double arrow icon Compliance reporting for state and federal regulators
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Wealth and investment icon

Wealth & investment platforms

Portfolio management, advisory, and client reporting tools for RIAs and wealth managers.

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  • Double arrow icon Portfolio aggregation across multiple custodians
  • Double arrow icon Performance attribution and goals-based reporting
  • Double arrow icon Robo-advisory engines with rebalancing 
logic
  • Double arrow icon Multi-asset support equities, fixed income, crypto, commodities
  • Double arrow icon Client-facing portals and advisor desktop apps
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Shield info

Fraud & risk management

Real-time fraud scoring, transaction monitoring, and risk dashboards.

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  • Double arrow icon ML-based scoring on every transaction in real time
  • Double arrow icon Behavioral biometrics and device fingerprinting
  • Double arrow icon Rule-based and hybrid risk engines for explainability
  • Double arrow icon Operational risk dashboards for fraud and compliance teams
  • Double arrow icon Model retraining pipelines without exposing raw PII
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RegTech & compliance automation

Software that takes manual compliance work off your operations team.

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  • Double arrow icon AML transaction monitoring and SAR generation
  • Double arrow icon Sanctions, PEP, and adverse media screening
  • Double arrow icon Automated regulatory reporting (FINREP, COREP, MiFID II)
  • Double arrow icon Audit trail systems with cryptographic integrity
  • Double arrow icon Region-specific RegTech for US, UK, EU, GCC markets
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Bitcoin icon

Crypto & blockchain infrastructure

Exchange, custody, and on-chain capabilities for regulated crypto businesses

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  • Double arrow icon Spot and derivatives matching engines
  • Double arrow icon Hot/cold wallet architecture and key management
  • Double arrow icon MiCA-aligned onboarding and Travel Rule compliance
  • Double arrow icon Smart contract development, audit, and deployment
  • Double arrow icon On-chain analytics integration Chainalysis, TRM Labs
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Work

Real software projects we've shipped

Real scenarios where founders, operators, and enterprise teams brought us in to build software that shipped to production:

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Where we go deep

Fintech sub-sectors we
know well

Six fintech sub-sectors where most of our recent work has happened. If your project sits inside one of these, we can usually start with shipped-product context, not a learning curve.

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Retail & commercial banking

Mobile and online banking, account servicing, treasury management, and SME banking portals. Comfortable on Mambu, Temenos, or building fully custom depending on what fits your business.

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Capital markets & trading

OMS/EMS, FIX gateways, market surveillance, and post-trade automation. Built for institutional desks, brokers, and trading platforms with low-latency requirements.

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Payments & cards

Issuing, acquiring, real-time settlement (FedNow, SEPA Instant, UPI), 3DS, tokenization, and cross-border FX. PCI DSS-aligned design across the payment perimeter.

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Wealth & asset Management

Robo-advisory, model portfolios, performance attribution, ESG analytics, and investor reporting. For RIAs, family offices, and institutional asset managers.

Bitcoin icon

Crypto, web3 & digital assets

Exchange and custody infrastructure, on-chain analytics, MiCA-aligned compliance, Travel Rule, stablecoin issuance, and tokenized real-world asset platforms.

Compliance & governance

RegTech & compliance

AML, KYC, sanctions screening, transaction monitoring, regulatory reporting (FINREP, COREP, CCAR, MiFID II), and audit trail systems with cryptographic integrity.

How we work

Our three-phase delivery process

We follow the same shape on every engagement, with durations adjusted to scope. Most full builds run 12–20 weeks; integrations and AI features usually 6–10 weeks

Step 1

Consult and align

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  • » Discovery workshop to align goals, users, workflows, and outcomes.
  • » Requirement gathering and stakeholder interviews business, and compliance.
  • » Technology selection based on scale, performance, security, and long-term maintainability.
  • » Risk register & success metrics
  • » Fixed-scope proposal
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Discovery, regulatory mapping, and scope. You leave with a fixed-scope proposal.

Step 2

Design & engineer

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  • » High-fidelity UX in Figma web, mobile, dashboard, and admin interfaces.
  • » System architecture covering data models, APIs, integrations, auth, and compliance.
  • » Agile sprints with weekly working demos and live client feedback loops.
  • » Automated test pipelines
  • » Demos & feedback every sprint
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UX, architecture, build, and ongoing review with working demos every two weeks.

Step 3

Deploy & evolve

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  • » Deployment to AWS, GCP, or Vercel with CI/CD pipelines and zero-downtime releases.
  • » Observability with Datadog, Sentry, or Grafana live from day one tracing, errors, and performance.
  • » Security hardening, access controls, and compliance-ready audit logging.
  • » Continuous compliance
  • » Optional engineering retainer
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Cloud deployment, observability, & iteration as the platform earns traffic.

Want this process applied to your project? We'll share a roadmap within a couple of working days.

Tell us about your project
Tech stack

Our fintech technology stack

The tools we tend to reach for. Selection always depends on your platform, throughput, and compliance context we'll explain the trade-offs during discovery.

Next Js logo
Next.js
React logo
React
vue logo img
Vue
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Nuxt
Node.js logo
Node.js
nestjs logo
NestJS
python logo
Python
fastapi logo
FastAPI
django logo
Django
go logo
Go
PostgreSQl logo
PostgreSQL
Aws logo
AWS
GCP logo
GCP
azure-original
Azure
Terraform logo
Terraform
github
GitHub Actions
Datadog
Datadog
Sentry
Sentry
Stripe logo
Stripe
Github
GitHub
Copilot
Copilot
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Awards & Recognitions

Global recognition for excellence and trust

ISO 9001:2015 certified quality software engineering section ISO LOGO

ISO 9001:2015 certified quality software engineering

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Top-rated AI & custom software development company

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Recognized leader in building AI-powered software and solutions.

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Globally recognized for top custom software development

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Most reviewed partner for AI and software solutions

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Verified experts in premium custom software development

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Top-ranked in delivering MVP development services

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Ranked among global innovators for SaaS and SMEs software

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Award-winning partner for scalable web and mobile app projects

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Top-ranked firm in web and mobile app development

Client voices

What Jeremy Brown said

ZAPTA understood the challenges small and medium-sized businesses face, and brought professionalism, dedication, and real expertise.

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Jeremy Brown
Founder of Insyteful
Questions

Fintech development FAQs

Most fintech MVPs we ship run 12–20 weeks from kickoff. Larger platform builds run 9–24 months in phased rollouts. Integrations and AI features usually ship in 6–10 weeks. After a 30-minute discovery call we share a milestone-driven timeline, and you can decide from there.

Compliance is part of the architecture, not bolted on at the end. Every engagement starts with a regulatory mapping for your jurisdictions. We work under ISO 9001:2015, run security scans on every commit, and align our operations to SOC 2. Compliance specialists from our team join your discovery sessions where it makes sense.

Yes. We've integrated with Mambu, Temenos, Finacle, Avaloq, FIS, Fiserv, and a number of legacy mainframe cores. We rarely recommend rip-and-replace. Most of the modernizations we do build modern surfaces and AI layers on top of cores that are still doing their job.

Yes. We've built for crypto exchanges, custody platforms, on-chain analytics tools, stablecoin issuers, and tokenized RWA platforms. We bring MiCA, Travel Rule, and VASP compliance experience alongside Solidity, ethers.js, and Fireblocks integration depth.

You do fully, from day one. Source code, ML models, design files, infrastructure-as-code, and documentation. Full IP assignment is signed before sprint one. Your codebase lives in your GitHub organization, operable by your team after handoff.

Fixed-scope projects, dedicated teams, nearshore development centers, and time-and-materials. Most fintech engagements run as dedicated teams with fixed milestones. We'll recommend a model during discovery based on your scope, timeline, and how you prefer to manage risk.

CONTACT

Get in touch with our experts

We will add your info to our CRM for contacting you regarding your request. For more info please consult our privacy policy

As a non-technical founder, building a platform carries enormous risk. ZAPTA understood the challenges growing businesses face and guided us with deep expertise, a great project lead, and out-of-the-box ideas that improved our initial design.

Jeremy Brown small avatar
Jeremy Brown
Founder of Insyteful

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