Netofficials builds compliant, scalable fintech software development services for startups, scale-ups and established financial institutions — covering payments, lending, digital banking and investment platforms.
Service Overview
Fintech software development is the practice of designing, building and maintaining software for financial products and services — including payment processing, digital lending, wealth management platforms, digital banking, and insurance-adjacent applications — under the compliance, security and reliability constraints that financial regulators and card networks impose. Netofficials builds these systems with regulatory requirements treated as first-class engineering concerns, not afterthoughts.
Financial software operates in a distinct regulatory environment. A payment platform must satisfy PCI DSS controls for cardholder data. A consumer-facing banking app must implement PSD2-compliant Open Banking APIs and authenticate users through OAuth 2.0 and OpenID Connect. Any product that onboards customers must embed KYC (Know Your Customer) and AML (Anti-Money Laundering) workflows, and handle personal data under GDPR. These obligations shape architecture decisions from the first sprint, which is why a generalist agency that learns compliance mid-project creates both cost and legal risk for the buyer.
Netofficials approaches fintech projects with an API-first, microservices architecture. This lets individual services — identity verification, transaction processing, reporting — scale independently and integrate with third-party providers such as Stripe Connect or Plaid without rewriting core logic. For financial institutions replacing ageing infrastructure, see legacy modernisation for financial institutions replacing ageing core systems. For teams building a new product, MVP development for fintech startups validating a new product describes how Netofficials scopes and delivers an initial release.
What We Deliver
Netofficials builds payment platforms that handle card acquiring, account-to-account transfers and digital wallet functionality. Integrations cover Stripe Connect, ISO 20022 messaging and Open Banking APIs. PCI DSS controls are designed in from the start. This applies to payment service providers, neobanks and marketplaces that need to move money reliably across multiple currencies and rails.
We develop end-to-end lending platforms covering application intake, credit decisioning workflows, document verification and repayment scheduling. Systems connect to bureau data feeds, KYC providers and core banking APIs. Built on Node.js and PostgreSQL with event-driven processing via Kafka where loan volumes demand high throughput. Relevant for consumer lenders, BNPL providers and SME finance platforms.
Netofficials builds KYC onboarding flows, AML transaction monitoring engines and audit-ready reporting modules. Identity verification integrates with third-party providers and uses OAuth 2.0 and OpenID Connect for secure session management. GDPR data-handling requirements are addressed at the schema and API layer. Suitable for any regulated financial product that must meet FCA, FinCEN or AUSTRAC obligations.
We design and deliver API layers that connect your platform to bank data aggregators such as Plaid, payment networks using ISO 20022, and PSD2-compliant Open Banking endpoints. Integration work covers authentication, consent management, data normalisation and error handling. Useful for wealth management tools, accounting platforms and any product that reads or writes financial data across institutions.
Our Process
Netofficials maps your compliance obligations — PCI DSS, GDPR, AML, KYC and any jurisdiction-specific rules — before architecture decisions are made. Your product manager or CTO joins scoping calls to confirm data flows, user roles and integration points. You receive a written compliance requirement register and a project scope document.
Engineers select data stores, messaging infrastructure such as Kafka, and a cloud environment suited to your load profile and compliance requirements, including AWS Financial Services where applicable. The client reviews and approves the architecture document, covering PostgreSQL schema design, API contracts and OAuth 2.0 or OpenID Connect authentication patterns, before build begins.
Development runs in short sprints. Each sprint closes with a security review covering the code added in that cycle. Your team receives working software at the end of every sprint, not a status report. Integration with payment gateways, Open Banking APIs and identity providers is tested in a dedicated staging environment that mirrors production data controls.
Before go-live, Netofficials conducts a pre-launch compliance audit and coordinates penetration testing against the production environment. You receive full source code ownership, technical documentation, runbooks and a maintenance plan covering security patching and regulatory update cycles. Ongoing support is scoped separately to match your operational model.
Technology Stack
Node.js
Python
Java
Go
GraphQL
OAuth 2.0
Stripe Connect
React
TypeScriptReact Native
Next.jsFAQ
Cost depends on the number of user roles, third-party integrations, compliance scope and transaction volume the system must handle. A payment platform requiring PCI DSS controls, KYC workflows and Stripe Connect integration carries more engineering effort than a single-function internal tool. Engagement model also matters: a fixed-scope MVP costs differently from a dedicated team building a multi-product platform over twelve months.
Timeline is shaped by regulatory complexity, the availability of third-party APIs such as Plaid or Open Banking providers, the number of compliance controls required (PCI DSS, AML, KYC) and the size of the delivery team. An MVP with a defined scope moves faster than a full digital banking platform with core-system integrations. Netofficials scopes timeline during a structured discovery phase before any development begins.
Compliance is built into the architecture from discovery, not added at the end. Netofficials engineers apply PCI DSS data-handling controls, design KYC and AML workflows as first-class system components, and implement OAuth 2.0 and OpenID Connect for identity management. For Open Banking work, PSD2 and ISO 20022 requirements are mapped during the design phase. API development for regulated data follows least-privilege and audit-logging standards throughout.
The client owns all source code, documentation and intellectual property produced during the engagement. Ownership transfers in full on delivery. This is stated explicitly in the project agreement before work starts. Netofficials retains no licence over the codebase. Clients can take the code to any internal team or third-party vendor after handover without restriction.
