Mobile1XFintech
Fintech engineering, security first
Mobile1X engineers fintech platforms for banks, startups and enterprises, including payment and banking API integrations and security-conscious architecture designed to support compliance work. Fintech builds typically range from $5,000 to $100,000+ depending on scope.
The problem
Where projects go wrong.
In financial software the expensive mistakes are quiet ones: a retry that double-charges, a log that leaks, a permission that is too wide.
- Integrations with banks and payment providers fail in ways the happy path never shows.
- Security is added at the end and becomes a rewrite.
- Audit and compliance needs are discovered after the architecture is fixed.
- Money-handling code is not designed to be reconciled or explained.
Our approach
How we solve it.
We design for failure first: idempotent operations, clear transaction states, least-privilege access and audit-friendly logging, built into the architecture from the start. Compliance is a property of your organisation and regulator, so we build systems that make compliance work easier and work with your security and compliance stakeholders.
What we build
- Payment provider and banking API integrations
- Secure authentication, authorization and data protection
- Transaction flows designed for retries, failure and reconciliation
- Compliance-minded architecture: audit trails, access control, data handling
- Mobile and web front ends for financial products
- Security review of existing fintech systems
Technology
What it’s built with.
Integrations
- Payment gateways
- Banking APIs
- Webhooks
Security
- Authentication
- Access control
- Encryption
- Audit logging
Backend
- Spring Boot
- SQL
- AWS
- Cloudflare
Product surface
- Android (Kotlin, Java)
- iOS (Swift, Objective-C)
- Web (React JS)
Process
From first call to launch.
Discover
A 30-minute call on your goal, users, budget and timeline. You leave knowing whether we are a fit.
Architect
We choose the stack and system design, and write down scope, risks and a quote before any build starts.
Build
We ship in working increments so you can see and use the product as it grows.
Test
Functional, device and performance testing, plus security review of authentication and data handling.
Launch
Store submission, release configuration, analytics and monitoring, so launch day is not a first run.
Improve
We track what users actually do and keep improving speed, reliability and conversion.
Pricing
What it costs.
Product and platform builds typically range from $5,000 to $100,000+ depending on scope. Standalone performance audits start at $500. Every project gets a written scope and quote before work starts.
Proof
Related work.
We do not yet have a public fintech case study. Related shipped work involving billing, checkout and ordering is below, and we are glad to discuss relevant experience on a call.
The A2Z Collection
A full-featured e-commerce web app, from browse to checkout.
B2B Pharma Platform
Connects pharmaceutical suppliers and buyers: catalogue, pricing, ordering.
FAQ
Fintech Engineering: common questions.
Does Mobile1X build fintech platforms?
Yes. We engineer secure, scalable fintech systems for banks, startups and enterprises, including banking and payment API integrations.
Do you guarantee PCI DSS or regulatory compliance?
No. Compliance depends on your organisation, your regulator and how the whole system is operated. We build compliance-minded architecture and work with your security and compliance stakeholders to support it.
How much does a fintech build cost?
Fintech builds typically range from $5,000 to $100,000+ depending on integrations, security requirements and platforms. You receive a written scope and quote after a discovery call.
Talk to an engineer
Talk to an engineer about fintech engineering.
Tell us what you are building. An engineer replies within one business day, or skip the form and call.