Fintech Software
Development
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Fintech Software

Fintech Software Development Services Built to Pass Audit and Scale

Our fintech software development services cover lending platforms, payment flows, digital wallets and the integrations that tie them to banks and data providers. Senior engineers build PCI DSS and SOC 2 controls into the first sprint, so compliance never stalls your launch.

200+ enterprises transformed
500+ domain trained professionals
US & India delivery centres
TYPICAL TARGET ARCHITECTURE
Java 21 + Spring Boot 3
Core services
PostgreSQL 16 double-entry ledger
Ledger
Apache Kafka + Plaid / Stripe APIs
Events + rails
Amazon Bedrock + SageMaker
AI layer
Trusted by enterprise clients who demand real-world impact
IS .NET RIGHT FOR YOU

Where Custom Fintech Software Development Services Fit, and Where They Don't

Fintech software development services cover the design, build and operation of software that moves, lends, stores or analyzes money. That includes payment flows, lending and loan servicing platforms, digital wallets and ledgers, plus the KYC, fraud and reporting systems around them, built to standards such as PCI DSS, SOC 2 and GLBA.

Choose Fintech when

✓  Your product logic is the differentiator. Underwriting rules, pricing, rewards or settlement timing are what customers pay for. Rent those from a platform and your competitors can rent the same thing.

✓  You're stitching together several providers. KYC from one vendor, cards from another, payouts from a third. A custom orchestration layer turns each vendor swap into a config change instead of a rewrite.

✓  Legacy systems are slowing approvals. Manual verifications and overnight batch jobs stretch loan and onboarding cycles. Modern services around the old core cut turnaround without a risky big-bang replacement.

✓  Auditors need a trail you can actually produce. Regulated lenders and payment firms must log every decision, change and access. Building that in from day one costs far less than retrofitting it before an exam.

Where we'd tell you not to

> You're launching a standard product. A plain debit account or a simple wallet ships faster on a Banking-as-a-Service or white-label platform. Build custom only around the parts that set you apart.

> You need a core ledger for a chartered bank. Buy a proven core banking platform such as Mambu, Thought Machine or Temenos, then build the customer experience and integrations on top. Our banking and financial services team works that way.

> The idea isn't validated yet. Test demand with a clickable prototype or a partner sandbox before you take on PCI scope and licensing work. Regulated infrastructure is expensive to build for customers who never arrive.

WHAT WE BUILD

Our Fintech Development Services

Six ways enterprise teams engage us as their fintech software development company, each with the stack we'd actually reach for on that kind of work.

Custom Fintech Software Development

Lending engines, payment orchestration, ledgers and back-office tools built around your product rules. We model money movement as double-entry events behind idempotent APIs, so a retried request never charges a customer twice.

Java 21, Spring Boot 3, Go, PostgreSQL 16, Temporal

Fintech Application Development

Our fintech application development services cover mobile banking apps, digital wallets and customer portals with biometric login, card controls and real-time balances. One React Native or Flutter codebase serves iOS and Android, and the same APIs power the web.

React Native, Flutter, Swift, Kotlin, Next.js

Legacy Banking and Lending Modernization

We wrap aging cores and batch systems with modern APIs, then move workflows across in slices, with parallel runs and reconciliation at each step. Our application modernization services keep the business running while the old stack retires.

Spring Boot 3, Apache Kafka, Debezium, Kubernetes, AWS

Fintech Integration and API Development

KYC, KYB, credit bureau, open banking and payment rail integrations behind one internal API layer. We handle webhooks, retries, rate limits and vendor outages, so a provider's bad day doesn't become your customers' bad day.

Plaid, Stripe, Alloy, Experian, Apache Kafka

Security, Compliance and QA Engineering

PCI DSS scoping, encryption, secrets management and audit logging built into the pipeline, plus test automation for every money path. Our cybersecurity and compliance specialists work inside the same release gates as our DevOps and quality engineering team.

HashiCorp Vault, AWS KMS, Playwright, Snyk, GitHub Actions

Fintech AI Development Services

Fraud scoring, document extraction for underwriting, and AI assistants for servicing teams, added to the platforms you already run. Every model decision is logged and explainable, because a regulator will ask why an applicant was declined.

Amazon Bedrock, Amazon SageMaker, XGBoost, LangGraph, Databricks
PROOF

Fintech and Lending Platform Work We've Delivered

Three engagements with numbers attached. Every card leads with the outcome, not the technology.

45%

Achieved a 45% reduction in loan processing time and 50% faster onboarding

Financial Services

Transforming Lending Operations for a Leading Financial Services Provider

Built a cloud-native lending platform with rule-based decision engines, automated origination checks and third-party data integrations for instant verifications, all with full audit trails.

Read the case study →

7

third-party SDKs connected within a single production React Native codebase.

Financial Services

Cross-Platform Web3 Crypto Wallet for a Leading Enterprise

Delivered one React Native wallet for iOS and Android, integrating Stripe, Ramp, Sardine and Coin-flow for fiat-to-crypto purchases, with direct Ethereum and Polygon connectivity through Web3 JS.

Read the case study →

3

Verification Platforms Integrated and validated, including Inscribe, Footprint, and Mid-desk.

‍

Fintech Lending

Verification and QA Testing for an SMB Loan Approval Platform

Ran sprint-based QA across underwriting, loan setup and servicing modules, tested third-party business verification integrations, and validated security and compliance for business and financial data.

Read the case study →
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Fintech Software
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Not sure whether to build custom or launch on a Banking-as-a-Service platform?

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ENGAGEMENT & COST

How You Engage Us, and What Drives the Cost

Three commercial shapes, and an honest account of what moves the number. You shouldn't have to fill in a form to learn how a partner charges.
WHAT ACTUALLY MOVES THE NUMBER
Seniority mix
An architect-heavy team costs more per month and usually less overall. The wrong mix shows up as rework, not as an invoice line.
Scope certainty
Fixed price needs fixed scope. Where the requirement is still moving, time and materials beats the contingency a fixed bid has to carry.
Compliance requirements
Regulated environments add evidence, review cycles and audit trails. That is real work, and it belongs in the estimate rather than in a surprise.
Integration surface
The number of systems you must talk to predicts effort better than feature count. Ten integrations is a different project from two.
Looking to hire
Fintech Software
developers for your own team instead?
HOW WE DELIVER

Our Enterprise-Ready Delivery Framework

The same five steps on every engagement.
STEP 01
Contextual Readiness
Ready-to-deploy solutions for your environment. We map the existing estate, its dependencies and its constraints before proposing anything.
STEP 02
Seamless Vendor Onboarding
Rapid integration with existing vendor ecosystems. Access, environments, security review and ways of working, handled so engineering time isn't spent on procurement.
STEP 03
Platform-Agnostic Engineering
Works across any technology stack. We build on the stack that earns its place. We won't force a technology decision to suit our bench.
STEP 04
Flexible Engagement Model
Scalable team structures to your needs. The commercial shape can change as the work does, without renegotiating the relationship.
STEP 05
Hybrid Global Delivery
Onshore, nearshore and offshore delivery, with overlap hours that make standups worth attending.
WHEN WE'RE STAFFING A TEAM
Curated profiles · 24 to 48 hrs
Onboard & kickoff · 48 to 72 hrs
Our published staffing SLAs, from the point a requirement is agreed. You interview the engineers before committing.
HOW IT RUNS IN PRACTICE
Two-week sprints, demoable increments, a backlog your product owner controls
Peer review on every change and quality gates that block rather than warn
Canary and blue-green releases with rollback, so a bad deploy is a non-event
TRUST

Built on Trust. Proven in Delivery.

200+
Enterprises Transformed
150+
AI Projects Delivered
$500M+
Business Value Generated
500+
Domain Trained Professionals
“
We have been working with Entrans for the last two years and they have played a key role in building our solution. Their expertise and professionalism were evident throughout the development cycle, and we were very pleased with the final product.
Nikolay Prokopiev
Chief Executive Officer
“
Entrans has been a trusted outsourced product development partner for 2 years now, providing a pool of good quality software engineers to tap into. Their team has a strong customer first orientation, is open to feedback and is a pleasure to work with.
Subramanian Visvanathan
Chief Executive Officer
RECOGNIZED, CERTIFIED & PARTNERED
AWS
Partner Network
Microsoft Azure
Partner
NASSCOM
Member
Databricks
Partner
Denodo
Partner
Google Cloud
Partner
Confluent
Technology Partner
ISO 27001:2022
Certified
MongoDB
Cloud Partner
TiE
Member
SICCI
Member
SOC 2 Type II
Certified
FAQS

Fintech Development FAQs

Still have a question?
Ask a senior engineer directly. We reply within one business day.
Ask us directly →

How much does fintech software development cost?

The two fintech-specific levers on cost are how much PCI DSS scope you take on and how many paid third-party services the product calls. Tokenizing cards through a provider such as Stripe keeps raw card data out of your systems, which shrinks the scope you must build, test and audit. Budget separately for per-check and per-transaction fees from KYC, credit and payment vendors. Those fees run for the life of the product, so they often outlast the build cost.

How long does it take to build a fintech platform?

A fintech MVP built on Banking-as-a-Service and existing providers typically takes three to six months. A custom lending or payments platform with its own ledger often takes nine to eighteen months. The calendar is driven less by code than by vendor contracts, sandbox access, security reviews and partner bank approval. Starting those in parallel with engineering is the single biggest time saver. A phased launch, with one product and one state or segment first, gets real users on the platform sooner.

Which compliance standards apply to fintech software in the US?

Most US fintech software must meet PCI DSS 4.0 for card data, GLBA for consumer privacy, and BSA/AML rules that drive KYC and transaction monitoring. Banks and enterprise buyers will also ask vendors for a SOC 2 Type II report. ACH products follow Nacha rules, lenders face fair lending and adverse action requirements, and money transmitters need state licenses. Your sponsor bank or legal counsel decides which apply, and the engineering team turns them into controls, logs and tests.

What is the difference between fintech software and traditional banking software?

Fintech software is usually API-first, cloud-native and built around one customer journey. Traditional banking software centers on a core system of record that runs many products in batch. In practice the line is blurring. Banks now buy software development for fintech-style experiences on top of their cores, and fintechs adopt bank-grade controls as they grow. Most modern platforms are a mix: a proven ledger or core underneath, with custom services and apps on top.

What should you look for in a fintech product development company?

Look for proof that the team has shipped money-moving software to production, not just apps with a finance theme. Ask how they prevent double charges and reconcile ledgers, and ask to see their own security attestation, such as a SOC 2 Type II report. Confirm you own the code and that they can support you during a bank partner audit. If you need end-to-end fintech development services, check that design, engineering, QA and DevOps all sit with one accountable team.

NEXT STEP

Start your Fintech project brief

Tell us the shape of the problem. A senior engineer reads it and replies. You won't get a templated capability deck.

Reply within one business day
Every engineer signs an NDA before day one
You own the code from the first commit
You interview the engineers before committing