Can you support California's Digital Financial Assets Law requirements?

We build the technical controls commonly expected under DFAL-aligned licensing, working alongside your California regulatory counsel.

Can you build for a specific US state's money transmitter licensing requirements?

Yes, we tailor reporting and compliance controls to the specific state regulatory framework you're operating under.

Do you support BSA/AML-aligned transaction monitoring?

Yes, we build transaction monitoring and suspicious activity reporting workflows aligned to US AML expectations for money services businesses and crypto platforms.

Do you work with MuleSoft, Apigee, and WSO2?

Yes, we design, implement, and optimize API management on MuleSoft Anypoint, Apigee, WSO2, and Kong.

Can you build open banking APIs for our institution?

Yes, including account information and payment initiation APIs with compliant consent and authentication flows.

How do you speed up partner API onboarding?

Through self-service developer portals with sandbox environments, clear documentation, and standardized authentication.

Can you modernize our legacy core without a full rewrite?

Yes, we wrap legacy cores with a modern API middleware layer, avoiding the risk and cost of a full core replacement.

API & Platform · San Francisco

API Integration & Open Banking Engineering in San Francisco

Banks, fintechs, and platform businesses run on APIs — and every unreliable integration becomes a partner escalation. Hurain Technologies designs, builds, and secures API ecosystems, from open banking connectivity to enterprise API management, so your partner integrations are fast to onboard, well-governed, and secure by default. In San Francisco, that means building to the technical expectations of the local market.

Get a San Francisco Estimate View San Francisco Overview

San Francisco Market Landscape

Why api integration services is critical in San Francisco

The Bay Area's startup ecosystem means Hurain Technologies frequently works with venture-backed teams under tight runway timelines needing a fast, reliable engineering partner rather than a multi-year internal build.
San Francisco's proximity to major AI research labs has pushed fraud-detection and risk-scoring expectations higher than almost any other market — 'good enough' rules engines don't compete here.
California's evolving Digital Financial Assets Law (DFAL) is shaping new licensing expectations for crypto businesses operating from the state.

The Challenge

Problems we see teams struggling with

Slow partner and third-party onboarding

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

Inconsistent API governance

Multiple teams shipping APIs without standards creates versioning chaos and security gaps.

Legacy core system bottlenecks

Monolithic cores can't expose modern, well-documented APIs without a middleware layer.

Open banking compliance pressure

PSD2/open banking-style mandates require secure, standards-compliant APIs with strong consent and auth flows.

No visibility into API usage and abuse patterns

Without centralized gateway analytics, teams often don't know which partners are hitting rate limits, which endpoints are being scraped, or where latency is actually coming from.

Breaking changes disrupting live partner integrations

APIs shipped without a versioning strategy force partners into painful, uncoordinated migrations every time the underlying system changes.

Our Approach

How we deliver api integration services in San Francisco

API strategy & governance

API design standards, versioning policy, and lifecycle governance so every team ships consistent, secure APIs.

Open banking API development

Account information and payment initiation APIs built to open banking standards with OAuth2/OIDC consent flows.

API gateway & management platforms

Implementation and consulting across MuleSoft, Apigee, WSO2, and Kong for traffic management, throttling, and analytics.

Middleware modernization

Wrapping legacy cores with modern, well-documented REST/GraphQL APIs without a risky core rewrite.

Developer portal & partner onboarding

Self-service developer portals with sandbox environments that cut partner integration time from weeks to days.

API security engineering

OAuth2/OIDC, mutual TLS, rate limiting, and API-specific threat protection against abuse and data exfiltration.

Versioning and deprecation strategy

A formal API lifecycle policy that gives partners predictable migration windows instead of surprise breaking changes.

Technology

Tech stack we work with

API Management

MuleSoft AnypointApigeeWSO2KongAWS API Gateway

Standards

RESTGraphQLOAuth2 / OIDCOpen Banking / PSD2-style standards

Backend

Java (Spring Boot)Node.jsGoKafka event streaming

Security

Mutual TLSAPI threat protectionRate limiting & quota management

FAQ

API Integration Services in San Francisco — FAQ

Yes, we run fixed-scope engagements sized for startup runways, including MVP builds and technical due-diligence support ahead of a funding round.

Live Demos

A selection of platforms we've designed and built

For reference — real, working builds across fintech, compliance, healthcare, and commerce.

nexa-demo-jade.vercel.app

Fintech

Nexa

SaaS-style product dashboard and workflow UI for a fintech platform.

Open live demo

aml-compliance-suite.vercel.app

Compliance

AML Compliance Suite

Anti-money-laundering compliance and case-monitoring suite.

Open live demo

debtmanagement-two.vercel.app

Fintech

Debt Management

Debt management and collections tracking platform.

Open live demo

umarsob.vercel.app

Payments

UMARSOB Data

Android VTU/data-reseller platform with wallet, agent/referral system, and admin panel.

Open live demo

hospitalmangement-bay.vercel.app

Healthcare

Hospital Management

Hospital/clinic management system covering patient records, appointments, staff, and billing.

Open live demo

dmi-chw-app.vercel.app

Healthcare

DMI CHW App

Offline-first Community Health Worker counseling app with a central management platform, built for an NGO client.

Open live demo

homemakers-seven.vercel.app

Operations

Homemakers Pro

Enterprise operations system for a domestic staffing agency covering bookings, staff, and client management.

Open live demo

e-commerce-mu-one-39.vercel.app/nl-NL

E-Commerce

E-Commerce (Multi-Locale)

E-commerce storefront demo with multi-language, locale-based support.

Open live demo

mars-js.vercel.app

Legal

Mars

Legal web application prototype.

Open live demo

Ready to bring api integration & open banking engineering to San Francisco?

Book a discovery call and get a scoped technical estimate within 5 business days.

Book a Consultation Explore Services