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Custom software for finance

We build bespoke systems for finance organisations: client onboarding, reporting, internal tools and integrations with financial data providers. Each one is shaped around how your team works and connected to the software you already rely on.

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Systems we build

Typical finance projects. Each is scoped to your process, not a template.

  • Automated Regulatory Reporting Platform

    A system that aggregates transaction, client, and product data to automatically generate FCA regulatory returns including REP-CRIM, SUP 16 reports, and Gabriel submissions. Reduces manual compilation effort and minimises reporting errors.

  • Digital Wealth Management Portal

    A client-facing investment platform with portfolio visualisation, risk profiling questionnaires, suitability report generation, and ISA/SIPP wrapper management. Integrates with custodians and market data providers via FIX protocol and REST APIs.

  • Payment Processing Engine

    A custom payment platform supporting Faster Payments, BACS, CHAPS, and card processing with real-time reconciliation, PCI DSS compliance, and integration with banking partner APIs for settlement and clearing.

  • Consumer Duty Evidence and Monitoring System

    A compliance tool that tracks the four Consumer Duty outcomes (products and services, price and value, consumer understanding, consumer support) across all product lines and generates evidence packs for FCA supervisory engagement.

  • Open Banking Aggregation Dashboard

    A platform that connects to customer bank accounts via Open Banking APIs, aggregates multi-bank financial data, and provides cash flow forecasting, spending analytics, and affordability assessments for lending decisions.

Problems we hear about

The issues that usually prompt the first conversation.
  • FCA Consumer Duty regulations introduced in July 2023 require firms to evidence that products and services deliver good outcomes for retail customers, demanding new data collection and reporting capabilities
  • Open Banking and PSD2 requirements compel financial institutions to provide secure API access to customer account data while managing fraud risk and third-party provider governance
  • Anti-money laundering (AML) and Know Your Customer (KYC) obligations under the Money Laundering Regulations 2017 require automated screening, ongoing monitoring, and suspicious activity reporting to the National Crime Agency
  • Legacy core banking systems built on COBOL and mainframe architectures resist integration with modern fintech applications and real-time payment infrastructures
  • Increasing sophistication of financial fraud including authorised push payment scams requires real-time transaction monitoring and machine learning-based anomaly detection

Off-the-shelf or custom?

There are good off-the-shelf products for most of finance. If one fits your process, use it; we will tell you if we think so. Custom software makes sense when your process is distinctive, when you are joining several tools together by hand, or when a product forces your team into workarounds every day.

Rules we design around

Legislation and standards that commonly shape systems in this sector. We design with them in mind; your compliance advisers have the final word.
  • Financial Conduct Authority (FCA) Handbook
  • FCA Consumer Duty (PS22/9)
  • Payment Services Regulations 2017 (PSD2)
  • Money Laundering Regulations 2017
  • PCI DSS (Payment Card Industry Data Security Standard)
  • UK GDPR
  • FCA Operational Resilience (PS21/3)
  • Senior Managers and Certification Regime (SM&CR)

Relevant services

Common questions

Does Elsio build FCA-compliant software?
Yes. Elsio designs financial software to meet FCA regulatory requirements including Consumer Duty, SYSC organisational rules, CASS client money and assets rules, and conduct of business obligations. All projects include compliance documentation and audit trail functionality.
Can Elsio integrate with Open Banking APIs?
Yes. Elsio builds integrations with UK Open Banking Implementation Entity-compliant APIs for account information services and payment initiation services. Solutions support connections to all CMA9 banks and additional ASPSP providers.
How does Elsio handle PCI DSS requirements for payment processing?
Elsio designs payment systems to minimise PCI DSS scope by using tokenisation and hosted payment fields from certified payment service providers. Where direct card data handling is required, systems are built to PCI DSS Level 1 standards.
What AML and KYC capabilities can Elsio build?
Elsio builds automated AML systems including identity document verification, PEP and sanctions list screening, adverse media checks, transaction monitoring with configurable rules, and Suspicious Activity Report generation for NCA submission via the SAR Online portal.

Related sectors

Tell us about your finance project

Send a short brief and we will come back with questions, a rough approach and whether we are the right fit. No sales sequence.

Start a projectCall 07343 090512

Prefer email? info@elslabs.co.uk

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