Can you support FCA-adjacent compliance requirements for a London fintech?

Yes, we build the audit logging, reporting, and consent-flow infrastructure UK compliance teams commonly need, working alongside your FCA-facing legal counsel.

Do you have experience working with London-based businesses specifically?

Yes — we've delivered api integration & open banking engineering, cybersecurity, aml/kyc & compliance engineering, blockchain & cryptocurrency development engagements for clients in London and across United Kingdom, building to the local regulatory and operational context from the start.

How long does a typical api integration & open banking engineering engagement take for a London business?

A focused build typically runs 8-16 weeks; a full platform build-out runs 3-6 months. We scope and quote after an initial discovery call specific to your requirements.

Do you need to be based in London to work with us?

No — we work remotely with clients across every market we serve, coordinating on your team's schedule and tools, and can work alongside local counsel or partners in London as needed.

What's the first step to start a project in London?

A discovery call covering your specific requirements, timeline, and any regulatory or partner constraints already known — from there we scope a technical estimate, typically within 5 business days.

Can you support a London business that already has an in-house team?

Yes, we regularly work as an embedded pod alongside existing engineering teams, handing off documentation and architecture decisions rather than operating as a separate black box.

Do you provide ongoing support after launch for London clients?

Yes, post-launch retainers covering monitoring, incident response, and continued feature development are available for every engagement, not just larger platform builds.

How do you price a project for a London-based business?

Small, well-defined builds are typically fixed-price; larger, evolving platforms run on a monthly dedicated-pod model. We scope and quote after an initial discovery call, not before, so the estimate reflects your actual requirements rather than a generic rate card.

United Kingdom

Blockchain & Payments Development Company in London

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Overview

Building technology for London businesses

London remains Europe's largest fintech and crypto hub, anchored by the City of London's traditional banking base and Canary Wharf's concentration of global banks and payment institutions. Hurain Technologies builds blockchain, payments, and API infrastructure for London-based fintechs, crypto businesses, and financial institutions operating in close proximity to the FCA. Businesses based in London come to Hurain Technologies for API Integration & Open Banking Engineering, Cybersecurity, AML/KYC & Compliance Engineering and Blockchain & Cryptocurrency Development, built by engineers who treat local context as a starting constraint rather than an afterthought.

London hosts one of the world's densest concentrations of licensed payment institutions and e-money issuers, many headquartered around Canary Wharf and the City. Because London operates under United Kingdom's national regulatory framework, platforms built here need to satisfy the same expectations as anywhere else in the country: payments and open banking integrations typically engage with the FCA's regulatory perimeter and the UK's Open Banking standard for account information and payment initiation.

London's overlap with both US East Coast morning hours and Asian market close makes it a natural hub for platforms needing near-24-hour operational coverage. That trajectory is exactly why platforms built for London today need to be architected for tomorrow's volume, not just the traffic a launch-day demo needs to handle — retrofitting scale onto a system that wasn't designed for it is consistently more expensive and more disruptive than building for it from the outset.

What tends to distinguish a London-based platform that scales cleanly from one that stalls isn't the technology choice — it's whether the engineering team understood the city's specific operating context from the first architecture conversation.

Every engagement in London starts with the same discovery process — understanding your specific requirements, your timeline, and any constraints already known from banking partners, regulators, or existing infrastructure — before a single architectural decision gets made.

The Challenge

What businesses run into in London

Keeping pace with London's growth

The FCA's presence in London means fintech and crypto-asset firms here operate under some of the most closely observed regulatory scrutiny globally.

Meeting United Kingdom's technical compliance expectations

Crypto-asset businesses marketing to UK consumers fall under the FCA's financial promotions regime for cryptoassets.

Scaling past a platform built for an early, low-volume launch that wasn't architected for real transaction growth

This is one of the most common reasons London businesses come to us after an initial build with another vendor — the system worked at launch, but wasn't designed for the volume and complexity that came with actual growth.

Finding engineers who understand London's specific market

A generic offshore team applies the same playbook everywhere. Getting local context — regulatory nuance, typical customer expectations, competitive landscape — right the first time avoids costly rework later.

How We Solve It

Engineering focus for London businesses

API Integration & Open Banking Engineering in London

Without a proper API gateway and developer portal, every new integration takes weeks of custom engineering.

Cybersecurity, AML/KYC & Compliance Engineering in London

Security debt compounds quickly once a platform is handling real transaction volume and regulator scrutiny.

Blockchain & Cryptocurrency Development in London

Many blockchain builds start with insecure, unaudited contracts that fail third-party security review and block funding or listing.

Production-grade delivery for London teams

The same engineering discipline regardless of city size: formal test coverage, security review before launch, and monitoring from the first day of production traffic.

Industries

Sectors we support in London

Banking & Fintech in London

Banks and fintechs are under pressure to open their platforms via APIs, modernize legacy cores, and meet open-banking and AML obligations without disrupting existing operations or customer trust. A common starting point: open banking and partner api programs.

Crypto & Web3 in London

Exchanges, token issuers, and Web3 platforms need production-grade blockchain engineering — not prototype code — to survive audits, scale to real transaction volume, and integrate cleanly with fiat rails. A common starting point: token, coin, and smart contract development.

Payments & PSPs in London

Payment service providers and platforms handling multi-rail, multi-currency transactions need orchestration, reconciliation, and fraud controls that scale across markets without manual overhead. A common starting point: payment orchestration and smart routing.

Enterprise SaaS & Platforms in London

Fast-growing SaaS platforms need to modernize architecture, expose secure partner APIs, and automate operations to keep shipping quickly as customer and data volume scales. A common starting point: monolith-to-microservices migration.

HealthTech & InsurTech in London

Health and insurance platforms manage highly sensitive data under strict regulatory frameworks, requiring secure architecture, automated workflows, and integration with legacy systems of record. A common starting point: secure architecture and data protection engineering.

Real Estate & PropTech in London

Real estate platforms and PropTech operators are digitizing property transactions — from tokenized ownership and fractional investment to automated escrow and payment flows — and need engineering that can handle real money movement and regulatory scrutiny, not just listings software. A common starting point: tokenized property and fractional ownership platforms.

Our Standard

What every London engagement includes

Architecture reviewed for local context

Data handling, access control, and compliance patterns designed against the regulatory reality London businesses actually operate under, not a generic template.

Built for real transaction volume

Load-tested against realistic usage patterns for a business operating in London, so scaling past launch doesn't require an architecture rewrite.

Security review before launch

Internal security review and, for platforms handling meaningful value or sensitive data, independent third-party audit coordination before go-live.

Documentation your team can use

Architecture decisions and operational runbooks handed off in a form your internal team or future hires can work from directly, not locked in one engineer's head.

Where We Help