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B2B-Lab

Industry · Fintech and B2B SaaS

Fintech and B2B SaaS product development

Fintech and B2B SaaS development where security is built into the architecture, not bolted on at the end. We build customer portals, billing and subscriptions, payment integrations, analytics and compliance tools — with role-based access, an audit log, data storage under 152-FZ (Russia's personal data law) and deployment in your own environment.

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Industry challenges

What holds growth back

  • 01

    Strict security and audit requirements

    Every action involving money and personal data must be protected, logged and explainable to the security team and the regulator.

  • 02

    Complex billing and pricing plans

    Subscriptions, trials, usage limits, discounts, prorations and refunds quickly turn invoicing into a source of errors and manual work.

  • 03

    Customers expect best-in-class banking service

    An outdated portal with slow loading and confusing navigation drives up support load and user churn.

  • 04

    Manual checks and reporting

    Verifying customer documents, reconciling payments and preparing reports take operations teams days every month.

Solutions

What we build for the industry

  1. 01

    Customer portal development for banks and services

    A fast web portal with accounts, transactions, documents, requests and support chat. Two-factor authentication, role-based access and an audit log come by default. We build customer portals for banks and microfinance companies in line with your security team's requirements.

    Websites and web applications →
  2. 02

    B2B SaaS development: multi-tenancy and roles

    A SaaS platform with customer data isolation, roles, team invitations, an API and webhooks for integrations. The architecture is designed for customer growth from day one, so you won't have to rewrite the core as you scale.

    Platforms and marketplaces →
  3. 03

    Billing, subscriptions and payment integration development

    Pricing plans, trials, usage limits, automatic invoicing, recurring payments and refunds. We connect YooKassa, CloudPayments, SBP and bank acquiring, and send closing documents via electronic document exchange. Your finance team stops reconciling payments by hand.

    Platforms and marketplaces →
  4. 04

    Fintech app development for iOS and Android

    Native mobile apps with biometric login, push notifications about transactions and protection against data interception. A best-in-class banking app experience, built around your product logic.

    iOS and Android apps →
  5. 05

    AI agents for compliance and operational routine

    Agents verify customer documents, reconcile payments, detect anomalies and draft reports. Every decision comes with an explanation and a log entry, and final approval stays with an employee. Operations teams spend less time on routine.

    Vertical AI agent systems →
  6. 06

    Messenger bot and Mini App for customers and support

    Transaction notifications, request status, answers to common questions and subscription payment via Telegram. A Mini App gives quick access to key portal features without installing an app.

    Telegram Mini Apps →

Integrations

We work with the systems you already have

  • YooKassa
  • CloudPayments
  • SBP (Faster Payments System)
  • T-Bank Acquiring
  • SberBusiness API
  • Gosuslugi (ESIA)
  • Diadoc
  • 1C:Accounting
  • Telegram Stars

FAQ

Frequently asked questions

How do you ensure the security of a fintech product?

We build in role-based access, encryption, an audit log, two-factor authentication and API protection from the first sprint. Data is stored on your servers or in the cloud of your choice, in line with 152-FZ.

Can the product be deployed in our own environment?

Yes. We have experience with on-premise deployment and closed networks. The code, infrastructure and access credentials are handed over to you.

How much does a fintech product or SaaS cost?

For reference: a customer portal starts at 120,000 ₽, a mobile app at 400,000 ₽, an agent system at 500,000 ₽, and a SaaS platform with billing at 1,200,000 ₽. We quote the exact cost once the specification is worked out.

What is the MVP timeline?

A platform MVP takes 8–12 weeks, a mobile app 8–14 weeks. After that we develop the product in sprints with weekly demos.

Other industries

Contact

Always happy to discuss a new project.

Fill in the form — or a detailed brief if your requirements are already clear. We'll reply with an estimate and a plan.

  1. 01Tell us about your task, goals and timeline
  2. 02Get a clear estimate and plan
  3. 03Call with the head of the lab
Submit a brief

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